CYMCAP 6.2 Date: May 2014 CYMCAP Version 6.2 rev. 4 ► Version History ► Installation Procedures
► Hardware Requirements ► Contact Information
What’s New CYMCAP 6.2 rev 4: Fixes and enhancements Engines - Correction of the value of T2 reported for pipe-type cables. - Correction of discrepancy affecting the computation of armour losses for cases with several circuits involving at least one pipe-type cable. Armour losses could be ignored for such case.
Graphical User Interface -
Correction of the induced current formula displayed in the Excel report.
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Correction of an “Overflow error” bug caused when attempting to save an MDB installation using the option “Depth from the earth of the surface to the bottom of the …”.
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Correction of a bug preventing to solve or save a new MDB installation.
CYMCAP 6.2 rev 3: Fixes and enhancements Engines - Revised algorithm for cables in riser pole exposed to solar radiations. - Correction of a bug affecting the short-circuit add-on module. For concentric wires and wire armour, the short-circuit temperature computed
was divided by the number of wires yielding a lower temperature than expected. - The calculation of T4, the external thermal resistance, has been enhanced for cases consisting of a single circuit in flat formation with the sheath bonded at both ends in a duct bank or backfill.
Graphical User Interface - More comprehensive drawing for sector-shaped cables in cable library. - The earthenware duct material is now available for cables in ducts (MDB, filled troughs, buried ducts, etc.). - Appropriate value of specific insulation resistance constant is used based on insulation material. It can also be specified by the user for a custom insulation material. - Review of the equations displayed in the Excel report. - Installations with a single circuit (with one cable per phase) are automatically solved using the equally loaded solution option. - A new feature under the UTILITIES tab of the navigator has been added. User can compact the current CYMCAP database opened to reduce its size. - A new column named FEEDER ID has been added to the Summary Results table of the Summary sheet of the Excel report.
CYMCAP 6.2 rev 1 (not officially released): New Features and improvements: Graphical User Interface -
Option to customize the default legend of the isothermal curves via the menu: Option > Preferences > Customize Isothermal Curves.
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Grouping option for the cable library by saving cables under a common group name.
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Field of cable ID, feeder ID, and study ID extended to 32 characters.
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Option to enter values of U, V and Y for custom duct materials in an MDB installation.
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Option to stop the calculation at anytime (works only for a single installation).
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Option to import load curve from an Excel file format.
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For SL-Type cables, fillers are now accounted for in the insulation screen, the bedding or the jacket, depending on the cable construction.
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Possibility to start the application into a chosen working directory instead of the default one by creating an INI file (StartUpWorkingDir.ini) into the installation folder of CYMCAP.
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New option to define cables spacing from edge to edge (instead of traditional center-to-center).
Fixes and enhancements Engines -
Detection of the hottest cable for a two-point bonded three-phase circuit in flat formation.
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Treatment of option Use as backfill in MDB installations.
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Short-circuit current rating for concentric neutral/skid wires.
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Filled trough module supports the presence of ducts in the internal backfill.
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Values of thermal resistivity of EPR and PVC for cable voltage under 3 kV and 35 kV, respectively.
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Correction of a discrepancy affecting cables in tunnel.
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Correction allowing filled trough to be simulated.
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Cables in trefoil in MDB installations are correctly handled during a transient simulation.
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Correction to support two pipe-type cables in an MDB installation.
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Backfills with cables in trefoil without ducts can be simulated.
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Revised algorithm for cables in riser pole exposed to solar radiations.
Graphical User Interface
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Display of isothermal contours blocked for “non-MDB” installations with circuit(s) having a non-unity load factor. Isotherms displayed previously were based on a unity load factor.
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Values of λ0, Δ1 and Δ2 for cables in trefoil now displayed in the EXCEL report.
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Units of some results in Excel report changed from meter to kilometer.
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Feature allowing the display of isothermal curves up to the surface for deep installations.
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Replacement of cryptic acronyms with descriptive labels.
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Following cables constructions are not supported anymore (for existing cables, validation is done when solving the installation):
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Cables with non-magnetic armour without a sheath or concentric wires
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Cable type COMBINED SHEATH without both sheath and concentric wires.
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Sheathed cable using reinforcement tape.
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SL-type cable with configurations not supported by the IEC Standards.
material
lead
with
reinf.
tape
without
View CYMCAP 6.1.1 history features list. View Cymcap 6.0 history features list. View Cymcap 5.3.2 history features list. View Cymcap 5.3.1 history features list. View Cymcap 5.2.1 history features list. View Cymcap 5.1.4 history features list. View Cymcap 5.1.3 history features list. View Cymcap 5.1.2 history features list. View Cymcap 5.1.1 history features list. View Cymcap 5.0.3 history features list. View Cymcap 5.0.2 history features list. View Cymcap 5.0.1a history features list. View Cymcap 5.0.1 history features list. View Cymcap 4.6.2 history features list. View Cymcap 4.6.1 history features list. View Cymcap 4.5.2 history features list. View Cymcap 4.5.1 history features list. View Cymcap 4.3.2 history features list. View Cymcap 4.3.1 history features list. View Cymcap 4.2.4 history features list. View Cymcap 4.2.3 history features list. View Cymcap 4.2.2 history features list. View Cymcap 4.2.1 history features list. View Cymcap 4.1.4 history features list. View Cymcap 4.1.3 history features list. View Cymcap 4.1.2 history features list. View Cymcap 4.1.1 history features list. View Cymcap 3.08.2history features list. View Cymcap 3.08.1 history features list. View Cymcap 3.07.2 history features list. View Cymcap 3.07.1 history features list. View Cymcap 3.06 history features list. View Cymcap 3.05 history features list. View Cymcap 3.04 history features list. View Cymcap 3.03 history features list. View Cymcap 3.02 history features list. View Cymcap 3.01 history features list. View Cymcap 3.0 history features list.
CYMCAP 6.1.1 New Features and improvements:
EXCEL report is available both in French and in English. Language preference can be set for EXCEL report under the menu Option/Preferences/Excel report language.
A new library called “Jobs template” is available in the navigator. This library allows modeling the following layouts without cables and saving them in the library: non-standard duct banks, backfills, unfilled troughs and groups of layouts. The layouts coming from the Jobs template library can later be used when building an MDB installation.
In MDB installations, a backfill can be edited to change its size or its location. A backfill can also be modeled as duct bank with texture to change its dimensions in terms of height and width instead of changing its coordinates.
In MDB installations, user can enter the depth of duct bank / duct / trough / casing from the earth surface to the bottom of the layout. Previously, user could only enter the depth of a layout according to its top or its centre.
In MDB installations, user can model unlimited number of layouts. Previously, user could model a maximum of 11 layouts.
For MDB installations, a new option allows setting the thermal resistivity of the backfill to the same value than the soil thermal resistivity.
User can create a new execution from scratch within an existing study.
When executing a “copy tagged to”, CYMCAP allows creating a new folder from the "browse for folder" dialog box and copying the tagged elements of the navigator into the new folder.
Trefoil configuration can be modeled head down.
Program allows switching from an MDB installation to cables directly buried or buried ducts.
For trefoil circuits, the temperature of the hottest cable is displayed instead of systematically displaying the temperature of phase A.
Corrections to the engines: Please note that these corrections might affect the results obtained with the previous version.
Average air temperature in a duct is now computed more accurately.
Correction of discrepancy affecting PE-AL-PE armor constructions. The program gave good results when the jacket was entered in addition to the PE-AL-PE armor. However, it ignored the outer PE layer when there was no jacket. This has been corrected. The display of T3 has been corrected accordingly as well. It now represents the combined thermal resistance of the polyethylene. Please also note that when the cable has jacket in addition to PE-AL-PE armor, the jacket has to be polyethylene as well.
Correction affecting the external thermal resistance of a circuit in flat formation. For equally loaded calculations, when solving a circuit in flat formation having the hottest cable at an extremity (rather than in the center), the sheath losses were not correctly accounted for in T4 since the IEC Standard assumes that the centre cable is always the hottest in such situations. Adequate equation for T4 when the hottest cable is at an extremity is now implemented. The revision applies to one circuit with three cables only.
For tunnel installation, precision has been increased when calculating the distance between cables. For some cases, this might have affected the convection coefficient used for the configuration. The problem is corrected.
Unequally loaded analysis is not allowed anymore for cables crossings analysis.
Corrections to CYMCAP GUI:
Correction to the short-circuit report. The value reported as the sheath cross sectional area, “S”, was not computed correctly when wires were used for a metallic layer (concentric wires/skid wires, armor wires).The value reported was the cross-sectional area of one wire instead of the total cross-sectional area of the metallic layer.
Three-core SL-type cables no longer support sheath reinforcement.
In tunnel installations, an error message was displayed after selecting the option "GO FOR RACKS" or "GO FOR TRAYS". An error message was also displayed when deleting cables from a rack or a tray. Both problems have been corrected.
User cannot enter anymore zero angles for two circuits crossing.
Validation on tunnel edge has been corrected for some tunnel configurations.
Cross-bonding is not allowed anymore when the option "electrical interaction between circuits" is active.
Hardware requirements:
CYMCAP is compatible with Windows 8.
The Excel report is compatible with Excel 2013.
Cymcap 6.0 (all revisions) CYMCAP 6.0 rev. 5
Another place with input data validation corrected when changing a cable by another one in the installation and solve.
CYMCAP 6.0 rev. 4
Input data validation corrected when changing a cable by another one in the installation and solve. Validation ask again the user to complete the specific installation data before to solve. CYMCAP version 6.0 from rev. 1 to 3 let the user solve without complete the specific installation data for the new cable selected and make the calculation with default values never entered by the user.
Correction of "invalid argument" error obtained with ducts in trefoil installation into specific installation data after changing to another bonding and click OK.
Allow to create an armour cable with no bedding and no serving to support low voltage cable (< 2kv).
CYMCAP 6.0 rev. 3
Problem found for installations using three core cables and EQUALLY LOADED option. Some cases like SL-TYPE cable do not converge and for the cases that used to converge the results obtained with CYMCAP 5.3 rev. 2 are optimistic. Results now matching CYMCAP 5.3 as before.
User is not allowed anymore to assign a custom resistivity of fillers for SL type (3-core) cables.
Capacitance, charging capacity of three phase system and charging current are displayed again in EXCEL report. Previous CYMCAP 6.0 revision was displaying them at 0.0 in the EXCEL report.
CYMCAP 6.0 rev. 2
For MDB only, pipe type cables coordinates for Y position was offset a little bit from it’s real position when sent to the engine in previous CYMCAP version. This problem is corrected.
Pipe type cables are now considered with D-shaped skid wires (round wire was assumed before in the calculation of the resistance of the wires).
CYMCAP 6.0 rev. 1
Temperature isotherm plots so far assumed that the background environment is uniform (thermal resistivity is not changing with position). In this new version this assumption is removed for MDB module. Therefore one can use temperature plots in an MDB installation as well. In the case user needs to have these isotherms for a ductbank/backfill installation, he/she needs to model it as an MDB installation.
Drag & drop feature is now available in CYMCAP when building or modifying an installation.
CYMCAP now allow to save an installation which is incomplete to come back later and complete it.
User can define and save customize default values for ambient temperature, native soil thermal resistivity, dimensions and materials of backfills, ductbanks, casings and ducts in casing. These default parameters can later be used when creating or modifying a new installation. These customized default parameters can be entered by the user under Options/Preferences/Customize Installation Defaults.
Cable damage curve calculation added to short circuit add-on module. User can create a cable damage curve file ready to import in CYMTCC.
Unlock insulation material option “Paper-polypropylene-paper” for pipe type cable in cable library.
Force the user to enter skid wires when creating a new pipe type cable into cable library.
Ducts in trefoil cable configuration is allowed in backfill installation.
New feature that allow user to show his company logo on every page of the EXCEL report.
Display current CYMCAP version on every sheet of the EXCEL report.
For longitudinally corrugated sheath, changes of input data like TAPE WIDTH, TAPE OVERLAP, etc... now affect the diameter over shield and the DC resistance of the shield at 25 deg. C when the user click the COMPUTE button.
Small GUI correction for tunnel installation. PERMUTING TREFOIL used to move on top of the screen after clicking OK in the SPECIFIC INSTALLATION data dialog box.
Tunnel installation allow combining in the same installation the TREFOIL layout and the PERMUTING TREFOIL layout.
Add t4 values for tunnel installation in the EXCEL report.
In the summary report of the Excel report, the display of the neutral temperature was changed from 20.0 (default) to -. Temperature of the neutral conductor is not computed by CYMCAP as it is only used for sequence impedance calculations.
Correction in EXCEL Report Generator for users working with EXCEL 2010 to keep all pictures embedded in the report like previous EXCEL versions.
Correction to compute sheath factor (SHF) for not only two point bonded but also for for othe bonding arrangements.
Correction of the calculation of the diameter over insulation screen for sector shaped belted cables. T1 is affected by this correction and is now computed correctly.
Display correction for the diameter over the three cores, "d", for sector shaped screened cables. The drawing that shows the dimension corresponding to "d" was also modified accordingly.
Correction of the thickness of insulation between conductors for sector shaped screened cables. Now, insulation screen is added to
insulation.
The loss factor in the case there are different cable types in the same installation, some with an armor, the others without an armor, was not calculated correctly. The changes can be more significant in the case of two point bonded systems.
The insulation thickness t1 in the steady state report for single-core cable is now correctly computed. This insulation includes the sum of conductor screen, insulation and insulation screen, this is because the insulation screen and conductor screen are considred as part of insulation when it comes to compute the thermal resistance of the insulation T1.
The parameters involved to compute the eddy losses in the EXCEL report (steady state report) are now correctly displayed for lagging, centre and leading phases.
The induced current is calculated correctly now when we have both sheath and concentric wires for a cable. Before CYMCAP computing the induced current using the resistance of the sheath instead of the equivalent resistance (Rsheath//Rcwires). The mean diameter involved in the computation of the resistance is corrected for: - C. Wires. - Custom non magnetic wires. - Magnetic wires ( custom magnetic wires, steel wires touching and steel wires no touching ). - Corrugated sheath. This correction has no significant effect on the ampacity but improve the accuracy of the results.
Now CYMCAP supports a custom material for longitudinally corrugated sheath. The user can define its own material properties.
The Excel report does not show any more 0 for the induced voltage when we have cross bounding system with unequal sections length and user supplies AM and AN. This is because when the minor sections lengths are not equal, we still have some residual induced voltage in the sheath.
The mean diameter of reinforcement tape and the number of tapes is now considered in the calculation of the mean diameter.
The resistivity of the sheath for an individually sheathed 3-cores cable is now corrected. Before CYMCAP treats the sheath as cooper whatever the material selected. Now the resistance of the sheath is computed according the material type the user select for the sheath.
The resistance for solid cooper conductors having cross section area higher than 150 mm2 are not computed by IEC standard when this later is selected. The previous version revert to the calculated method resistance for these cables .
The exterior duct temperature is correctly displayed for all the ducts for equally loaded cases. In the previous version Only one duct temperature is displayed, the remaining ducts showing zero as temperature.
The parameters required to compute the external thermal resistance T4 for cables in air (h,Z, E) are properly reported now in the steady state report.
The formula used to compute T1 for screened three-core cable is corrected and properly reported in steady state report. The screening factor K is reported in the formula as per IEC 60287 2-1 part 2.1.1.3.1.
The formula used to compute the proximity effect Yp for three-core cables and three single- core cables is corrected and properly reported as per IEC 60287 1-1 part 2.1.4.1.
Air temperature inside the ducts for a ductbank installation is now correctly reported in the excel report.
The effect of sun radiation in Riser pole is corrected. The version 5.3 rev 2 was almost insensitive to solar radiation . The convergence range is extended as well for higher intensity of solar radiation.
Load factor correction: the rating ampacity for cyclic loading is more accurate now. Before the standards suggests to use an approximate equation, however for some cases this approximation is not good. Now we replace it with the exact equation (without approximation).
The rating ampacity for cyclic loading in combination with moisture migration is now corrected. Before the derating factors shown in the old steady state report was displaying the same factors M ( derating factor for cyclic loading) and M1 (derating factor for cyclic loading+ moisture migration). Those factors are corrected.
Correction also done in GUI when continuous load (LF=1) is used with moisture migration. The derating factors reported for M and M1 were 1.0, this is because the effect of moisture migration has not to be accounted through these factors.
For Submarine cables (3-cores) with separate lead sheath around each core (SL) and an magnetic armor, two corrections were introduced of loss factor in the sheath and armor (Lambda1 and Lambda2). For these cables, lambda 1 should be multiplied by 1.5 as per 2.3.10 and it was not. The multiplication was done for screened cables but not for SL-type. The correction for lambda 2 comes from an amendment to IEC387 whereby the lambda2
computed from 2.4.2.3.1 and 2 was previously multiplied by a factor (1-lambda1) and now by a factor (1-Rac/Rs*lambda1).
In transient analysis, when single phase circuit is used with fraction of returning current through the sheath different form zero, the starting point of the transient analysis is not that given in the steady state analysis. The problem now is corrected and the starting point is corrected.
When the bonding type is cross bonded with unequal sections length, we still have some induced voltage in the sheath. Since the program doesn’t compute this value, it is no more displayed in the Excel report for this bonding type.
For aluminum hollow core conductors the proximity effect factor will always be set to 0.8 instead to 1.0. There are no values in the IEC for this type of construction, so we decided to have the same values as for copper Correction for the calculation of the tunnel air thermal resistance. For cables in trefoil, the cable diameter was taken as the diameter of a single cable. Now it is taken as 2.15 * cable diameter.
T2 for PIPE TYPE cable is now displayed as "Thermal Resistance Between Screen and Sheath" and T4’ as "Thermal Resistance of the Oil" in the STEADY-STATE tab of the EXCEL report.
A bug to calculate the area of the skid wires has been corrected. This affects the pipe type installations.
Change done in Cable Library for pipe type cable when choosing the diameter of the skid wires via the wire gauge. Diameter value taken from the wire gauge selection is divided by 2 to represent half of the skid wire as it showed in the cable graphic representation.
CYMCAP 5.3.2
Correction of a problem related to the GUI, in unfilled trough module (UNF), which has occurred only in CYMCAP 5.3 rev.1. It is related only to the specific case where the unfilled trough has no cover. The selected method of calculation was not the right one. The wrong results were on the conservative side. Please review all these cases that are built already using CYMCAP 5.3 rev.1.
In the case of cables crossings, in CYMCAP 5.3 rev.1, the derating factor was not considered correctly. The results were the same as the circuits are energized in the absence of the each other. In other words the thermal interaction was not taken into account (the right derating factor was not applied). This was resulted by a bug created just in CYMCAP 5.3 rev1. Please review all the crossing cases modeled with CYMCAP 5.3 rev. 1.
Correction of a problem in EXCEL report found just in CYMCAP 5.3 rev.1 The external thermal resistance, T4, was not reported in the Excel sheets.
Introduced an alternative way to start the calculation engine for WINDOWS XP machine.
CYMCAP 5.3.1
Unfilled Trough module has changed significantly. Three more options are added. Using the new options one can input the thermal resistivities of soil, the trough’s cover and the wind speed above the trough. The users who have already acquired the unfilled trough module, can continue with the original approach. The original approach is provided as the IEC option. The three more options that are added, are called Slaninka’s method 1, Slaninka’s method 2 and the Anders-Coates method. In addition one can consider the cases where the trough is exposed to sunshine or is shaded.
In this new release, one can take into account the mutual electrical interactions between the cables of different circuits. In the IEC standard only thermal interaction between different circuits is considered. The only exception is when the circuits are multiple cables per phase.
Ask now BETA and SH (specific heat) values in custom dialog box for 5 type of materials (conductor, sheath, sheath reinf., conc. neutral and armour). This modification applied only for SHORT CIRCUIT calculation add-on module.
Changed the way the thermal capacitances for three core cables are computed. This correction will affect the calculation results
produced by the transient engine. Thermal capacitances appear in the cyclic calculations as well. Therefore the cyclic loading results are expected to change.
Fillers resistivity can now be entered for semi-conducting insulation for three core cable.
User can now create new ductbank/backfills by copying the existing ductbank/backfills in the MDB installation.
Correction of a bug in the steady state engine for cyclic loading calculations that cause the engine to freeze for few cases.
Correction made in steady state engine calculation for multiple casing installation when varying distances between two casings.
Corrections made in the steady-state engine for pipe type cable (remove the computation of air temperature in pipe type cables because applied only for other type of cables. The resistance of the oil was computed earlier. The effect on the results is small but is correct.
Correction made in the steady-state engine to verify whether the filler thermal resistivity entered by the user is lower than the thermal resistivity of insulation. If this is the case, the thermal resistivity of insulation over writes the thermal resistivity which is entered by the user for the filler.
The reference cable in the reference circuit is chosen empirically at the third iteration. It is kept the same for the next iterations. Originally the last cable in the reference circuit was always chosen to be the reference.
Small correction in the transient engine about the calculation report of transient option 1. Scaling factor reported was assuming a unit step load. The load curve was not considered. Now to output the scaling factor the actual load curve is considered.
The thermal resistivity of the metallic ducts are adjusted to a very small value.
Corrected the problem with the EXCEL Report generator that was not working when CYMCAP folder installation name included one or more space(s). (Cymcap 5.2 rev 1d)
Corrected the ERROR 3 problem when using one or more neutral cables under MDB installation. (Cymcap 5.2 rev 1c)
Corrected the problem to install standard ductbank at the surface of the ground. The Y position of the ductbank always used to go back to a default value after user entering a valid position to localize the ductbank near the surface of the ground. (Cymcap 5.2 rev 1c)
Minor correction for the custom value given a "not a valid floating number" in the cable library. (Cymcap 5.2 rev 1b)
Replace the character º everywhere in the display by the word "deg. C" in the presence of Asian character set. Asian users who are interested in this alternative should contact Cyme International (Cooper Power Systems) to get the proper hint. (Cymcap 5.2 rev 1b)
Excel report generation now supports Excel version 10 (office version 10) working under WINDOWS 7. (Cymcap 5.2 rev 1b)
Add in summary page of the Excel report a new entry which is: "Fraction of conductor current returning through sheath for single phase cables". (Cymcap 5.2 rev 1b)
CYMCAP 5.2.1 New features added:
Frequency and resistance (IEC-228 or calculated) are now part of an installation. They can be assigned as part of the installation. Then they are saved like any other installation parameter in the execution.
In the MDB module default boundaries for the simulation domain has been assumed. In the case of very deep installations one might need to ignore the default position for the boundaries and apply new ones. Now the user can change the size of boundaries in the MDB installations to obtain valid results.
As it is shown also by the IEC standard circulation losses in the case of two point bonded systems depend on the phase relationships between the cables. In this new release, by default, phase B (center phase) is positioned in the center when one is creating a new three phase circuits. Before this release phase A was at the center.
Correction in CYMCAP and engines:
No more support of the older protection key system.
In the case of armored cables, the steady state engine used to assume that the cable surface is PE for the value of the emissivity. Now, the actual value of the covering is used. This change affects only the cables with armor inside a riser.
When the cable on the riser pole was exposed to solar radiation, the effect of solar radiation was computed in a wrong place inside the code. The applied changes affect only cables on riser poles exposed to solar radiation.
In the case of cables crossing, circuits with multiple cables per phase should not be used.
IEC standard does not support air installations where the circuits use multiple cables per phase.
Sequence impedance calculations are not supported for cables installations with magnetic materials. Therefore, in this updated version, the sequence impedance calculations are disabled for cable installations with magnetic materials (armor, pipe, duct). Please make sure not to use the results provided by CYMCAPZMAT for any installation in which magnetic materials were involved.
Change the way to execute engines when CYMCAP is running on Windows 7- 64 bit.
CYMCAP now generate EXCEL report under Windows 7 with Office 2010 (Excel 2010).
Sequence impedance calculations (ZMAT) are not available for cables in air.
In the case of cross bonded systems where the user defines the minor section lengths by specifying AM and AN, Lambda1’ is obtained using the same parameter evaluated for the two point bonded systems. The proportionality constant is given by the IEC standard. Based on the recent updates in the standard this constant is changed accordingly.
In the case any of the cables in an installation has magnetic duct, "Equally loaded" solution option is disabled.
Some discrepancies in the results of some casing studies with 3core cables. The results show very low temperatures for these cases.
Changed one more important factor for the calculations involving cables in ducts in casings. The ampacities computed by the engine were too large in some cases.
Change done in the steady-state engine to comply with the latest revision of IEC 60287 concerning calculation of sheath losses for cross bonded system with unknown section length.
Changed the display of T2 and T3 for the pipe type cable. The results are not affected. Just the display is modified.
This time it pertains to cables in air without the sheath or armor and without external covering (only insulation). Nowadays,
nobody produces cables like this, but in older days, this could happen, so SAMP supports this. I checked whether the cable has no jacket and no serving. However, I should also check whether it does have a metallic part outside
The correction for the short circuit add-on module that pertains to the cables with armor. The number of armor wires was not transmitted properly to the appropriate subroutine.
The total losses were computed correctly, but the split was not done correctly. This change will have a small effect on ampacity only for cables having all: concentric wires, sheath (with reinforcement or not) and steel wire armor.
This new version includes the latest updates for the parameters U, Y and V for plastic ducts to calculate T4’ (issued by the IEC standard).
Not allowed calculation for sequence impedance calculation (ZMAT) when the frequency = 0.
Thermal resistance T3 for the jacket now appears in the Excel report.
In this new version, changes were made on the unfilled trough module to correct a bug in the calculation of the temperature inside the unfilled trough. Please make sure to revise the results provided by CYMCAP-UNF for all your unfilled trough installations.
A discrepancy affecting the conversion of admittances from metric to imperial units has been corrected.
The display of the units of the earth resistivity has been corrected from Ohm/m (Ohm/feet) to Ohm.m (Ohm.feet).
Due to the display problem affecting the units of the earth resistivity, the earth resistivity was not correctly converted from imperial to metric. The conversion between metric and imperial units for the earth resistivity is now corrected. Please make sure to revise the results provided by CYMCAP-ZMAT for all admittances or impedances computed in imperial units.
CYMCAP 5.1.4
ZMAT calculations account now for all bonding types, including cross bonding. The validation of the ZMAT module is now completed.
For ZMAT module, user can change the resistivity of earth before launching impedance calculations. By default, this resistivity is set to 100 ohms/m.
Modification in Cable library when user chooses a custom material for insulation. Now, the option “Enter TANDELTA and EPSILN” is prompted automatically.
For MDB module, correction of a discrepancy affecting the calculation of the boundaries sent to the finite element engine. The problem was only in IMPERIAL units for installation deeper than 30 feet. The correction leads to higher ampacity than before.
Correction of a problem affecting multiple casing add-on module. The Y-AXIS was not recalculated correctly after changing the Y-coordinate of the casing and the casing was not shown anymore on the screen.
The bonding option "3-CON, sheath/screen around each core single point bonded" is locked when the cable has magnetic armour.
Correction of the U, V and Y factors used to compute T4’, the thermal resistance between cable and duct (or pipe).Values for plastic ducts have been modified as per IEC 60287-2-1, amendment 2. Values for plastic ducts used to be U=5,2; V=1,1 and Y=0,011. Now, these values have been corrected for U=1,87; V=0,312 and Y=0,0037.
User is not allowed anymore to model armored cable without bedding and serving.
CYMCAP 5.1.3
Make a correction in the installation package to make sure that file "InpLoad.dbf" is always overwritten during installation.
Correct a bug occured during the process of appending a database into the current open one.
Add a new validation to avoid the same cable to be used as a two trefoils in a duct and one trefoil in a duct.
Correction done for Excel report in page "Cable input data" under section 'Specific installation data' for item 'RH' of duct construction. In some installations the RH value was printed to 0 instead to it's real value. This error had no impact for the calculation.
CYMCAP 5.1.2
Disabled ZMAT calculation only when at least one cable of the installation is crossbonded. ZMAT is still under validation for this particular bonding arrangement.
Correction done in calculation for Add-on module Multiple casings.
Correction of the procedure to calculate the maximum current value found in the load ASCII import data file (create a load via import load file) when multiple readings per hour are detected. In this case, the peak current is now chosen within the average currents calculated from the readings of the ASCII data file. The peak current used to represent the maximum current of the original ASCII data file.
Small correction to calculate with more precision the position of the top cable of a trefoil for the Multiple Ductbank/Backfill (MDB) add-on module to avoid the error message no. 3.
From cable library, extension of the range for RHK value in concentric wires when "custom" material has been selected.
Correction of a bug for an installation using moisture migration option with three-core cable using fillers.
Correction of displays in transient options 1 and 3.
Correction of the way sheath losses are calculated. This correction affects cables in tunnel and fixes the mismatch between the starting point of the transient option 6 and the steady state results.
Corrections to solve the temperature divergence that was encountered in the case of transient analysis when the heat source temperature or flux was changing in time.
Support of the new protection key module in Cymcap GUI.
CYMCAP 5.1.1
New Add-on module Multiple casings
New Add-on module Cable crossings
New Add-on module, ZMAT, for calculation of cable parameters: sequence impedances/admittances
Neutral cable added to the installation to be used only with ZMAT add-on module
Add an option to display IEC Standard Formulae along with results into the Excel Report for installations having only one cable type.
Excel report extended for IMPERIAL mode like METRIC.
Correction made into the Excel report to align correctly values like tape overlap, tape thickness, acc. factor, etc.. with description into Excel report. What doe acc stand for?
Remove some data from the emergency page tab of the excel report like CAP1, CAP2, CAP3, CAP4, etc...
Correct a bug when saving an execution using the option "user supplied spacing between cables" from specific cable installation data. It was giving an error at the saving time.
Correction of a bug in SAMPW for PE/AL/PE cable (armour selection) that was not working in a transient study.
Correction of a problem with Excel 2007 and repgen application. A crash occured when start up the Excel Report. The problem was due to the presence or not of the printer.
Correction of a problem in the old steady-state report with MDB module only. Remove the display of the backfill/ductbank thermal resistivity, showing a value of 0.0, because finite element method allows the user to enter differents thermal resistivities.
Correction of a problem with user defines spacing sections in the engine. Wrong calculation was done before.
GAMMA, AME and AMT added to the excel report when permeability option is PROGRAM SELECTS
Add a new value in the excel report: ARMOUR LOSS FACTOR (lambda 2)
Replace the word "Permeativity" by "Permittivity" in the excel report section CABLE INPUT DATA
Correction of a problem for ducts in trefoil configuration. After editing the duct dimensions while choosing the cable from the cable library, ducts were not displayed around the cables. The user was forced to enter them again via the specific installation data dialog box.
Correction of a problem for cyclic loading with Neher-McGrath option.
Correction made in the Excel Report to the reported corrugated Jacket thickness.
Replacing "T3 Thermal resistance of Jacket" by "T2 Thermal resistance of Jacket" in the Excel report.
Correction of a small error in the Steady-state engine which affects ratings of cables in air (only case 10).
Correction of a problem with Short-circuit module not working when the user launch Cymcap program from a server machine and enters via a loggin dialog which is manage by CymAdmin.
Add new information "Thermal Resistance of the medium surrounding the duct (or pipe)" in the Excel report for Cable in Ducts
Tandelta corrections in the engine. Dependence of Tandelta (for some insulations) on the voltage was not considered.
User can define the temperature type for the heat source i.e. hot or cold. Hot source will be showned in red as before in the installation and cold source in blue.
CYMCAP 5.0.3
A new option to move one or more layers simultaneously with or without moving the cables inside has been added for the MDB module. This option has beenadded in the "Multiple dutbanks/backfills installation data" dialog box, inside the menu you get by right-clicking on the layers of the installation. The user should bring the mouse cursor over the list of layers and do a right click to open the menu. Then he should select the item "Move selected ductbanks/backfills" to move the selected items only.
User is allowed to Show/Hide the error report box after calculation of an execution. A check box has been added into the "error report" form to give to the user the option to prevent or not the error report box from opening after every calculation.
For CABLES IN AIR, all references to IEC standard 1042 have been changed for the latest one, i.e. IEC 60287-2-2.
A correction has been made into the EXCEL report for CABLES IN AIR installation to report correctly the intensity of solar radiation.
One more decimal has been added to the X - coordinates appearing on the graphical output of the installation. Actually, sometimes, the X - coordinate values displayed on the X - Axis of the installation were different from the same coordinates as displayed by the mouse cursor. This was due to a round up to one decimal of X-AXIS coordinates.
The maximum value allowed for the thermal resistivity of the heat source insulation has been increased from 6.0 to 50.0 C-M/W.
A discrepancy has been corrected for a particular case regarding the MDB module. When user entered manually the location of a backfill, after clicking the "Apply" button, the backfill used to change position and overlap on other existing backfills.
A correction has been made into the MDB module. When user changed the position of a ductbank already entered, an invalid argument error used to be displayed. This has been corrected.
A bug occurring only when calling EXCEL report for installations having three cables has been corrected.
A discrepancy has been corrected for the EMF Add-On module. For further information, please feel free to contact CYME International T&D at
[email protected]
CYMCAP 5.0.2
Correction was made when the user creates an Excel report after choosing the option “Custom” as material for the conductor. In the previous version, an invalid format for the type was introduced into the XML file for the CABLE information and made the REPGEN application crash.
Correction was made into the Excel report for inside and outside duct diameters in imperial units. These two values are now correctly shown in inches. When working in IMPERIAL mode, the duct diameters used to be converted wrongly from "Meter to Feet" instead of "Meter to Inch" in the Excel Report.
Correction was made into the MDB calculation engine to support COMBINED SHEATH cables having no concentric neutral layer. A crash used to occur into previous versions.
Correction of a minor problem in CHOTE when logging CHOTE, accessing SHAPES tab or LOADS and shift back to Cymcap mode and access again Shape/Load.
Correction was made for a crash occurring in the Steady-state engine for a particular case using single point bonded cables.
Correction was made in the engine, regarding transient options for Cables in Tunnels. Now, the transient engine (TAMPW) starts correctly with the results of the steady state engine (SAMPW).
Small correction was made in the Transient engine for time-varying load curves with scaling factor of 1.0. Some previous results can be affected.
Correction was made into the original database of CYMCAP. In the cable library, the conductor area of some secondary cables has been modified to be in accordance with the conductor diameter.
A New warning message is displayed when the number of wires or straps is exceeded. Now, if this value is not in accordance with the entered thickness and diameter, the user has to enter a new value.
Correction was made to replace all '²' characters with '2' in the cable title because the small '²' was making the Excel report crash!
Correction was made in the SAMPW engine for the mean sheath diameter calculated for a COMBINED SHEATH cable. In previous version, the mean sheath diameter used and reported into the EXCEL report was too small (half of wat it was supposed to be for COMBINED SHEATH cable). The calculation of
mean sheath has been revised consequently. The results are slightly affected by this change.
The iterative algorithm used for Cables in Trough was modified to avoid the convergence problems occurring in some cases.
The zero sequence impedance calculation displayed in the Excel Report has been corrected for pipe type cables. In the previous version, the zero sequence impedance for pipe type cables was not computed correctly.
For pipe type cables, a factor 1.7 was used to compute the conductor AC resistance at maximum temperature, according to the Neher-Mc-Grath method. This factor has been changed for 1.5 in accordance with IEC Standards 60287.
CYMCAP 5.0.1a
A mistake has been made in the last package and this modification ”Creates automatically a larger aspect ratio at calculation time especially for the /MDB module with more precise results for deeper installation.” was not there. This feature is working now for in this new revision. Please revise your MDB installation to see the new effect on your results.
A problem has been corrected for the Excel Report when the user not asking for the CABLE INPUT DATA report. The EXCEL report was not produced enterely and sometimes it crashed.
CYMCAP 5.0.1
Creates automatically a larger aspect ratio at calculation time especially for the /MDB module with more precise results for deeper installation.
New Add-on module added to support cables in Unfilled troughs. Contact sales department for more information.
New Add-on module added to support Filled troughs installation available through the /MDB module. Contact sales department for more information.
New Armour material added for cable construction which is called PE/AL/PE cable. This new material applies only for single core cable with COMBINED SHEATH.
Enhanced Excel report with a new tabular report on all cables input data and cable pictures showing all the dimensions used to make the calculations.
When creating a cable, a more realistic default value is used for the length of lay. This value is 10 times the diameter of the previous layer entered by the user.
Expands the list of conductor area default values avalaible for EXTRUDED AND CONCENTRIC cable type when creating a new cable from the Cable Library Editor.
Corrects a problem occuring only for the MDB module when an installation has cables installed in a non-standard ductbank without duct. The program gave "error 3" at calculation time. This scenario has been resolved.
Printing report flag to determine the exact type of conductor construction item "Compact/Compressed" selected from the Cable Library Editor.
For a solid aluminum conductor, range of minimum conductor diameter taken from the standard IEC 60228 table C.3.
Box title to enter the cable voltage from the cable library has been replaced by "cable opreating voltage" instead of "cable voltage".
Item "Segmental" of the conductor construction list from cable library has been replaced for "5 segments".
Inserted new text to the option "stranded" of the conductor construction list from cable library. The option is now called "stranded (round)". Unlock the "no bonding" option when the cable has no sheath, no concentric wires and no armour. The bonding will have no effect for this type of cable.
User can now do any selection of cables with the CTRL key and mouse left button when assigning loads to cables after selecting the option "Normal selection" available by clicking the mouse right button over the installation data list.
To check cables which fit in standard ductbank, more precise comparison of the percentage of duct fill versus cables size by adding one more comparison with the conductor area of the cable.
American standard ducts by nominal dimension can be selected when creating new ductbanks and changing duct sizes from the Specific Installation data.
Expands the wire gauge list of values for concentric wires cable. Added gauge values are 6,8,22 and 24.
Replaces "strap length" by "strap width" when entering data for concentric wires with flat straps from Cable Library.
Computes and displays the cross sectional area for sheath (corrugated sheath also), concentric wires and armour wires from the cable library.
For cables in duct, except for Standard ductbank and ducts in trefoil formation, user can move the cable to the center of the duct.
Adds a new option to the Help menu that connects the "Quick reference sheet to run Steady-State Analysis".
For transient option 6, user now has choice to either enter directly the emergency current desired or enter, as before, the scaling factor for each circuit.
Increases the range of the simulation time from 60 sec. to 600 seconds (10 minutes) for the Short Circuit Add-On Module.
Adds a new alternative of entering dimensions when creating a new ductbank from the Ductbank Library. The user has the choice now to enter the clearances of the
ductbank from the edge to the sides of the duct or from the edge to the duct center as before.
Be able to move the cables automatically after confirmation when changing the location of a non-standard ductbank from the MDB module.
Excel report will now displays "Induced Current on Metallic Sheath (see formula)" as soon as one cable type of your installation has a bonding type different of single point and crossbonded. If all your cables are either single point bonded or crossbonded then the induced current value will not come out into the report.
Add-on module /MDB (multiple duct banks/backfill) now working with Windows Vista.
Lock cable arrangement “two three phase circuits” (six cables in one duct) not supported for “Cables in air” installation.
Please note that an adjustment has been made in the calculations of the temperature and the ampacity for the transient options 1 and 6. The previous algorithm was providing results on the conservative side for transient ratings lasting longer than 24 hours for which the scaling factor was different than 1.0 and the assigned load curve was different than the 2000 hours constant load.
Corrects the temperature drop anormally occuring with Transient calculation for CABLES IN TUNNELS installation.
CYMCAP 4.6.2
Corrected a problem when copying tagged studies.
Lock the 'Multiple cables single point bonded' option for cables with armour since the calculation is not supported.
Correct a problem with cables in ducts in trefoil with the MDB module. An error 3 was issued. Now CYMCAP properly relocates the X and Y center position of ducts when they are not touching.
Change the unit for 'Surge impedance' to Ohm instead Ohm/km in the Electrical tab of the Excel report.
Added a warning "(see formula)" for Induced Current on Metallic Sheath in the Electrical tab of the Excel report.
Report of standing voltages for single-point bonded cables is back to the steady-state report when they are computed.
Corrected a wrong calculation for the mean air temperature of tunnel installations. Many previously obtained results were on the optimistic side.
For Groups of Cables in Air, we have replaced the IEC 1042 standard label for IEC 60287-2-2.
CYMCAP 4.6.1
An approximate temperature field distribution has been added to the installation graphic. Press Ctrl-t after a simulation has finished successfully.
The resistance value for cables with conductor area of 2500mm2 can be entered as per IEC 60228.
Ducts are now permitted in Cables in air for Group of cables 1042.
Corrected a problem with the location of the X and Y center of a standard duct bank selected from the library. This correction affects only duct banks that are not symmetrical (left edge different from right edge and/or top edge different from bottom edge).
Added a new page tab named 'Multiple' for the cables setup to support new cable configurations. We have added: -
Two three phase circuits in one duct Three phase circuits with same phase trefoil Single phase (same phase trefoil)
You can also create and add multiple cables per duct from the set up dialog box (page tab 'Multiple').
Cables in tunnels support three new cable configurations for trefoil: -
Three phase circuits with same phase trefoil Single phase (same phase trefoil) Trefoils with the possibility to permute phases
The user can flip the installation type buttons of the speed bar to the right when opening a data window. You need to make the selection from the Preferences of the top main menu.
Added a check to avoid the user to perform an EQUALLY LOADED calculation with one cable type using multiple cables per duct. The modeling of this kind of installations is only consistent with UNEQUALLY LOADED or TEMPERATURE solution options.
Added the current Resistance (Calculated or IEC) selection with the frequency value at the bottom main window of CYMCAP.
Correction of a ranking problem with the duct bank optimizer. The ranking order was wrong for three core cables only.
Added a validation check for one-core cables. The cable diameter is compared with the conductor area. Error message displayed if conductor diameter is too small for the entered conductor area.
Enabled the selection list of conductor areas when working in the Imperial mode for cable types "OTHER" and "COMBINED SHEATH".
Correction of the (x,y) coordinates in summary tab of the Excel report for the split of a trefoil and for Magnetic Field calculations.
The mean air temperature inside of a tunnel is shown now and the tunnel temperature label has been moved outside the tunnel walls.
Display in the Excel report the DC resistance as per IEC 60228 for aluminum conductors with areas of 1000 and 1200 sq mm. The values are now taken from the table when the user specifies resistances as per IEC. Previously these values were not in the standards and CYMCAP calculated them.
Cymcap is now compatible with Excel 2007 (Microsoft office 2007) to generate the Excel report.
The copy tag function has been corrected to properly copy Heat Source items in the library to another working directory
CYMCAP 4.5.2
New add-on module for Magnetic Fields
Corrected a problem for the EXCEL report. The inside duct and outside diameters were reversed.
Corrected a problem for remote mode (CYMCAP starting from a server), the Excel report did not open.
Display the comment for the selected execution on the navigator in the STUDY page tab.
A problem with the display of the external to the cable thermal resistances (T4’, T4’’, T4’’’ and T4) in the Excel report has been corrected.
CYMCAP 4.5.1
A new add-on module for computing Cables in Tunnels is available in this version.
Cyclic loading calculations as per IEC 60853 are now supported. Previously only the Neher-McGrath approach modifying T4 was supported. Now, the user can activate the IEC method (cyclic factor M) with and without soil dry out (moisture migration).
The default thermal resistivity for PVC ducts has been updated to match the IEC Standard 60287-2-1 Table 1. The value has changed from 7K-m/W to 6K-m/W. All cases with PVC ducts will give a slightly larger ampacity or smaller temperature.
Remove the moisture migration block from the "Multiple ductbank/backfill" module.
Added a new validation check to prevent the calculations for installations having multiplecables-per-phase together with single-phase cables since this is not supported.
Corrected a problem when renaming a study title with many executions. The old study title came back after quitting and reloading CYMCAP.
Added a new validation check to prevent the installation of multiple cables per phase with trefoils for cables in air since the calculation is not supported.
The display of load curves has been adjusted to reflect scaling factors larger than one in shapes when assembling loads.
Study title or execution title using the '&' character can be correctly displayed now in the Excel Report
The thickness and type of line in the graphical reports for transients can now be adjusted. When the label of a line is selected a click on the right-hand side mouse button will open a dialog.
Ducts in trefoil are now avalaible for non-standard duct banks.
A problem with the display of the Preferences menu for network licenses has been corrected. There was a delay when checking the license key and the menu did not show.
A problem when modeling buried ducts together with non-isothermal earth surface has been corrected. Only transient simulations are affected. The previous results where too conservative.
CYMCAP 4.3.2
Correct a minor problem found in the Steady-State report to display again the voltage and the conductor area of each cables of the installation.
Excel report now support any accents link French characters, Spanish characters, etc… that are used in the study title of the execution.
The CHOTE module is now capable to solve new executions added to the existing one’s without solving all executions from the beginning.
Power factor and lagging/leading flag was not stored into the database after saved an open execution in previous version. Now the problem is resolved.
Please revise and correct any executions using these variables.
CYMCAP 4.3.1
We have added an Excel report. It includes a summary report for all cases and a very comprehensive report when the metric system is used. Please be aware that there important limitation of the computed electrical parameters. Read the corresponding section of the Users Guide before using the results.
NOTE: To substitute the CYME logo on the right-hand side of the Summary Excel Report by your company’s logo, please replace the file Logo.jpg with a picture of your logo. The file resides into the folder where Cymcap application has been installed on your machine.
CYMCAP now supports “combined sheath cables” (previously called “European construction”) together with the MDB module.
Corrected a problem with pipe type cables in MDB module. There was an error with the (x,y) location in previous versions. Pipe type cables were wrongly located when creating the input file for the engine even though they show properly located on the screen. Please revise all your cases having pipe type cable with MDB module.
Added a multiple cables per duct modeling facility. CYMCAP supports now the possibility of installing 1, 2, 3, 4 and 6 cables in a duct. They are all considered multiple cables per phase.
Users can now enter the wire gauge of the concentric wires.
As a request from many customers, we have renamed the “European Construction” cable to “Combined Sheath” cable in the cable library editor
The “Comments” field for study and cable does not allow exceeding the limit of 100 characters (comments are not truncated anymore).
The installation dimensions are added to the drawing (measurement from the top of ductbank/backfill to the surface. This is for the Backfill/Ductbank modes and MDB module.
Show in the installation drawing the thermal resistivity of the ductbank/backfill for only backfill and ductbank mode.
Added a checkbox to ductbank designer. Now the user can select symmetrical or asymmetrical dimension for the distance to the duct bank edges (left, right, top, bottom).
Show the distance between two duct banks at the same depth in MDB module only.
In the cable permutation facility small fonts can be used now when there are many cables to help pinpointing the cable to be moved.
In the MDB mode the permutation screen allows now zooming to the duct bank region to make permutation easier.
CYMCAP 4.2.4
CYMCAP now considers fillers with different thermal resistivity than the main insulation for three-core cables in accordance with IEC 60287-2-1, amendment 2, 2006-03.
A warning has been added preventing a crash with the unsupported screened, three-core cables with a sectored shaped conductor in the MDB module.
CYMCAP 4.2.3
Corrected a problem wit ducts in trefoil for the MDB module
A problem when entering different cables in the MDB module was corrected. The results with respect to the previous version change slightly when there different cables are present in an installation.
An error with dielectric losses was introduced in version in version 4.2 rev 2 and now it has been corrected.
The optimizer works for multiple cables per phase. It runs faster and the progress bar has been modified.
An input error with nonstandard duct banks with the MDB has been fixed. Calculations were not affected.
The Cable Historical Operating Temperature Estimator algorithm has been updated. Now CHOTE considers asynchronous historical load dates on a per installation basis.
A problem with pipe type cables and MDB was solved.
CYMCAP 4.2.2
A lock has been added in the specific installation data to prevent users to enter cross-bonded cables when there are multiple-cables per phase mixed with other cables in a given installation.
The calculation of standing voltages for installations with multiple cables per phase and other cables with different bonding arrangements has been disabled.
A problem giving an Error 3 message with installations containing ducts in trefoils with the MDB module has been corrected. Some ducts were wrongly specified with the same coordinates.
A problem with trefoil, multiple-cables per phase and magnetic conduits was fixed. The ampacity was on the optimist side. The changes affect the results in the following manner: For unequally loaded cables but no multiple cables per phase and no magnetic duct there is no change; For unequally loaded cables with either multiple cables per phase or magnetic duct there will be an ampacity reduction. Larger reductions are expected when there is more than one metallic duct and the separation between ducts is large. For equally loaded cables, the percent of change depends on the number of ducts, for installations with one duct with three cables there is no change. For the equally loaded cables together with multiple ducts the new ampacities are lower. In summary, the largest changes are for multiple cables per phase in magnetic ducts separated a large distance.
Pipe type cables were repeated three times in the data file when not entered at the beginning. This produced sometimes an error 3 with MDB and strange output results with both the MDB and the standard calculation engines. This problem only affected installations with several cables and when pipe type cables were not entered at the beginning.
A problem was fixed with the specific installation data for pipe type cables. Some information was not displayed.
A problem with transient calculations was fixed. The wrong load was assigned to cables when there was at least one fixed ampacity circuit. This was observed as a phase-shift between the peak of the load and the peak of the temperature.
The lower limit of 500 W/m2 for the solar radiation intensity for cables in air exposed to the sun has been released. Users can now enter any number form 0 to 1500 W/m2.
The maximum thermal resistivity limit of the native soil has been released from 6.0C.m/W to 12.0 C.m/W to accommodate larger values.
A lock was added to prevent users entering magnetic armour to single-core cables.
CYMCAP 4.2.1
The new add-on module for Short Circuit Ratings (/SCR) can be linked from the cable library
Load factor smaller than one are now possible together with soil dry out
The user can now enter a separation distance for the "ducts in trefoil" configuration
Labels are shown directly in the installation displaying the computed steadystate temperature and ampacity
A new maximum value is permitted for the thermal resistivity of a custom duct; increased from 9.0 to 12.0 [m-C/W]
A new cable type has been added to reflect European Construction. It has external sheath and internal concentric wires. Users modeling external sheaths as armour are encouraged to use this new cable type for a more accurate representation of sheath losses.
A problem when importing loads from ASCII files has been corrected.
Cable construction using 'custom' conductor with 5 segments will be simulated as 6 segments at running time.
The user is now able to sort the studies from the navigator by Study ID (default) or Study Title. The options are available from the popup menu of studies by clicking on the right mouse button.
The user is able to move/copy executions from one study to another by dragging a study or an execution to a target study. The equivalent options (cut/copy/paste) are also available under the popup menu (right hand side mouse button).
Correct a problem with the XBASE conversion to MDB procedure to avoid appending many records having the same study ID and same execution number. The problem occurred with older versions of CYMCAP (versions 2.x). It generated unnecessary extra records in the Study database at saving time. Converting from recent versions of CYMCAP did not present the problem.
Correct a problem when moving a non-standard duct bank containing ducts in trefoil. When moving to a new location, the center position of the ducts was not properly updated to the new location. Further editing of the installation showed the cables outside of the duct bank.
CYMCAP 4.1.4
The user can now expand the bottom backfill deeper on y-axis for the Multiple Duct Banks facility.
Small changes to the login dialog for the multi-user mode concerning the copying of server databases to a local machine. The new MDB format was not recognized properly.
An insulation layer can be added now to heat sources.
Correction of an error when importing a load data file for creating a new load giving the error message: list index out of bounds.
Correction of an error when creating a new load when the library was empty; the 'New load' button did not work.
Correct a problem with heat sources for the multiple duct bank facility. The results were greatly in the conservative side. It is advisable for the users to repeat the calculation of all cases using the Multiple Duct Banks (MDB) module when heat sources are present.
Correction of an error in the cable library when entering a small conductor area; the value of conductor area was wrongly set to zero.
Correction of an error when entering one of the three cables of a three-phase circuit into a non-standard duct bank for the multiple duct banks module. The program gave a variant index error.
Add a database maintenance procedure to remove unused records from study tables because previous version didn’t remove all records attached to a study being deleted.
Correct a problem with study ID having leading spaces. Some study data was not loading in memory after opening an execution and look as data was lost. Cymcap now support leading spaces for study ID.
CYMCAP 4.1.3
Correction of a minor problem related to the conversion procedure of XBASE files to the MDB format (Microsoft Access Database). The problem was for installations using non-standard ductbanks, which were processed like standard ductbanks during the conversion, given the name “NO_STD_CYME” and wrongly added to the standard ductbank library. Ductbanks with that name in the ductbank library can be deleted without any problem. Now, ductbanks with that name are not transferred by the conversion process.
CYMCAP 4.1.2
Correct a minor problem in the Steady-State report for multiple cables per phase to display the total current per circuit.
Correct a problem with the ductbank optimizer in order to work with new calculation engine updated in version 4.1
Correct a problem when editing any case for Cables in Air. In the previous version, an application error occurred after clicking the 'SETUP NEW' button.
CYMCAP 4.1.1 This version follows the official version 3.08 rev 2 and the beta version 4.0.
A new add-on module can be called from CYMCAP to handle MULTIPLE DUCT BANKS (BACKFILLS or SOIL LAYERS) with different thermal resistivity in the same installation.
Cymcap now allows for the automatic selection of the reference circuit during the calculation. 'Automatic' selection of the reference circuit is set by default for the multiple duct banks mode. It will try to find a solution in one call to the finite elements engine avoiding unnecessary re-meshing.
A new facility has been added for cables in air to calculate the intensity of solar radiation by entering the geographic position of the installation and the day of the year.
A new configuration of cable has been added to the installation setup. The 'Ducts in trefoil' facility allows the user to easily add three ducts in trefoil formation automatically without entering the (x,y) location for each cable.
A “custom” Sheath can now be entered with specific construction (corrugation).
The duct bank optimizer now works with fixed ampacity circuits.
A button at the top of the installation screen was added to allow the user to copy the installation to clipboard.
The "copy to clipboard" option for the Steady-State report has been modified in order to capture the section selected by the user instead of capturing the entire report.
A new feature has been added in the navigator under the 'STUDY' tab to view the installation directly from the navigator before open it.
Two new sections have been added as radio buttons after 'Standing voltages' in the STEADY-STATE report: 'Thermal resistances' and 'Thermal capacitances' can be seen now.
Correct a problem in the STEADY-STATE report of the standing voltages for trefoil cables in duct bank for multiple duct banks. The printout displayed threetimes as many cables as in the installation.
Correction of a problem for the cable layout of some very old installations built with Cymcap for DOS that was not displayed correctly after opening an execution.
Migration of Cymcap data from XBASE (*.DBF) files to MDB (Microsoft Access Database) files. Cymcap data will be stored now in one file named CymcapData.MDB in each working directory that contains Cymcap data.
The recycle bin image on the top-right corner of the navigator has been removed permanently since it only worked with XBASE files. Be careful in the future when deleting items from your data. These items will be deleted
permanently with no possibility to restore them using CYMCAP tools. It is always recommended to backup your data frequently.
CYMCAP 3.08.2
Add a warning for Cables in Air before calculating when the installation is not supported in the IEC Standards.
Correction of a small bug in the Ductbank optimizer. The program stopped before starting the calculation when the installation had the same cable type in two different three phase circuits.
A correction was made to the steady state report. The heading of the AM and AN ratios for cross bonded cables was printed reversed. The calculations were correct.
The range of valid values for a heat source/sink modeled as heat flux has been widened from a lower limit of -10 W/m to -50 W/m.
CYMCAP 3.08.1
Three new options have been added into the popup menu (right hand click) on the "study" page tab. The new options allow to print all executions for one or more studies.
An addition was made to allow the computation of the standing voltages for an installation combining cables with single-point bonding, two-point bonding and three-core cables with common sheath.
Correction of a bug with transient analysis (temperature option). For very high voltage cables having a concentric neutral (or sheath) and armour the initial transient temperature did not match the steady state temperature. Smaller transient temperatures can be expected for such cables.
CYMCAP 3.07.2
Correction of the limit values for the solar radiation in cables in air when using imperial units
Correction for the duct bank optimizer module to support multiple cables per phase
Internal correction made for transient input data became invalid after adding new circuits to an existing installation.
CYMCAP 3.07.1
An error introduced in version 3.06 with the value displayed for the KCMIL of the conductor area was corrected. We have returned to the same value displayed in Cymcap 3.05 and earlier versions.
A heat source can now be used inside/outside of a backfill installation
CYMCAP 3.06
A correction was made in the Transient Analysis calculation when the last layer was the belt of a three-core cable.
The default values of solar radiation for cables in air has been changed to: Shaded: 1.0 W/m^2 Non-Shaded: 1000 W/m^2 Minimum value when the cables are not shaded: 500 W/m^2.
A minor correction was made in editing mode when entering the number of cables per phase.
CYMCAP 3.05
Correction of a problem displaying the conductor area in the cross section drawing. After editing the conductor area in square inches, the KCMIL value was displayed incorrectly (multiplied by 1000). This error did not affect the calculations.
Correction of a minor problem for the ductbank library when adding a new ductbank. After saving a just created duct bank, Cymcap was not able to save new changes to the same duct bank because it remained in ‘Add’ mode.
CYMCAP 3.04
Correction of a communication problem between Cymcap and Software Licence Key running under Windows XP.
CYMCAP 3.03
Supports the new ‘Protection Key Utilities’ 2.32 (HASP M4 Parallel and USB port, Sentinel-LM standalone and network software licensing).
CYMCAP 3.02
Cymcap is now fully compatible with European Regional Settings using the 'comma' as well as the decimal point. In earlier versions, users concerned with this issue should change the comma to a decimal point in order to use Cymcap. The application will continue to recognize only '.' as the decimal point but the users can now type the ',' character of their keyboard and Cymcap will convert it to a '.' automatically.
We now display in the Steady-State report the last iteration results when the solution did not converge.
Correction of a minor problem to 'Simulation/Report Control' form.
CYMCAP 3.01
Change the printer font to 'Courier' to produce aligned reports.
Correct a problem when editing a cable from navigator after using the option 'View tagged only'.
Add in the cable editor extra information about the magnitude of the resistivity for all custom materials.
Correct a problem when trying to save twice a load or a heat source after changing its title.
Make proper logoff for the protection key (software licence key) when leaving the application.
CYMCAP 3.0
Added support for a duct bank optimizer module.
The duct bank library is now integrated into the navigator.
A new command has been added in the shape editor to shift a curve to a new starting point.
The heat source library is integrated into the navigator.
A heat source is now supported in duct bank installations and in transient analyses.
Load curves can now be superimposed onto the graphical transient results for transient option 6 only.
Heat source curves can now be superimposed onto the graphical transient results for transient option 6 only.
User can now create a new study based on a template i.e. create a new study with all executions of the template study.
A search utility in the study tree is now available to find study titles.
A search utility in the study tree is now available to find execution titles.
A search utility in the study tree is now available to find all executions using a given cable ID.
The study ID, cable ID, and the load ID are now displayed in the navigator.
New transient calculation parameters were added in the transient data dialog box. These new parameters allow the solving of transient on a per circuit basis.
All custom components can now be replaced by a meaningful name in the cable library.
Design and emergency temperature in the cable library can be entered now.
There is now a more elegant way to present the Steady State report.
Two new tabular reports have been added to transient option 6: The 'Emergency Exposure Time Report' and the 'Peak Temperature Report'.
A search utility was added in the cable tree view to find a string in the cable titles or in the cable ID’s.
A new menu item 'View tagged only' has been added to the context menus of Study and Cable libraries.
Cable filtering options are now available for the cable library.
Two new conductor constructions are now supported: 5 and 6 segments with peripheral strands.
The average load factor is shown for Shapes, Loads and Heat sources.
A small 't' has been added as a prefix for Trefoil cables in the 'Permute Cable' mode and in the 'duct bank optimizer module'.
The number of significant digits for the time duration of shapes has been extended to three decimal places.
CYMCAP will display a warning message if the Steady State engine does not converge.
A problem was corrected with transient simulations when the installation has multiple cables per phase. The user will notice now that the unequally loaded solution will be used for multiple cables per phase, and that a reference circuit now needs to be specified. These changes affect the steady state ampacity as well, but only for solidly bonded cables. Note that the user should expect certain differences with respect to previous versions. The more parallel cables per phase the larger the differences will be. Additionally, the transient simulations will be slower. The more parallel cables per phase the slower the simulation.
A problem with the steady state report for parallel cables (in air) was fixed. The correct number of cables is now displayed.
The convergence method has been improved. The temperature of cables will be closer to the target values and some cases that previously did not converged will now converge.
A problem with transients was fixed for cables that have simultaneously: a lead sheath with a reinforcing tape, concentric neutral wires and steel wire armor. The results would be more accurate now.
The highlighting color for cables has been changed from red to yellow.
Study and Execution titles have been added to all transient reports.
A problem with very short duration transients was corrected. The temperature versus time plot will now show the right temperature behavior when the load ceases.
A problem with a sudden drop of the transient temperature has been corrected. This problem occurred only on extremely rare occasions and does not produce noticeable changes for cases not showing inconsistency. The only except are simulations that run to very high temperatures (over 150 °C).
Installation Procedures Nothing special to report concerning the installation procedures.
Computer System Requirements Cymcap requires an IBM PC or compatible computer using Microsoft Windows 95,98, 2000, ME, XP, NT 4.0. The minimum hardware requirements are:
A Pentium-based computer. A minimum of 128 MB of extended memory (256 MB recommended). A 150 MB of hard disk space. Any mouse, monitor and printer or plotter supported by Windows.
Version History Revision information for previous releases is not provided in this file. Please refer to the shipped documentation of previous releases or visit CYME International R&D online.
Contact Information How can we help you? If you have questions about this version of CYMCAP, or any version, Please feel welcome to contact us: Canada & International: 1485 Roberval, Suite 104, St-Bruno, QC Canada J3V 3P8 Tel. (800) 361-3627 (USA & Canada) Tel. (450) 461-3655 Fax (450) 461-0966 Internet: http://www.cyme.com http://www.eaton.com E-mail:
[email protected]
