Mx3IPG2A

MX3IPG2A Multiple-Function Protection for Generator (R< - Ucc< - Ucc>) TECHNICAL MANUAL

MDE/C133 2561 001

ABCD

blank page

MX3IPG2A

MDE/C133 2561 001

CONTENTS 1. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. GENERAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 Selecting rated values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 Underresistance protection (rotor ground) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Overcurrent protection (input I) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3 Undervoltage protection (diagnostics - input U) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4 Overvoltage protection (diagnostics - input U) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 Direct undervoltage protection (input Ucc) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.6 Direct overvoltage protection (input Ucc) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.7 Main and spare settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 8 8 8 8 8 8 9

4. ADDITIONAL FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.1 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.2 Output circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.3 LED signalling circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.4 Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.5 Additional timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.6 Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.7 Event logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.8 Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.9 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.10 Alphanumeric user identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.11 Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.12 LCD settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.13 Inhibiting operation - Deconfiguration via network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.14 Serial communication on LONWORKS (TM) bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.15 RS485 serial communication and MODBUS protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.16 Fault recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.17 Checking tripping circuits for continuity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5. LOCAL INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6. LCD MENU STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1 MAIN READING MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.1 Change dialogue language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.2 Change date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.3 Display settings in use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.4 Display main settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.5 Viewing spare settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.6 Display current and stored measured values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.7 Viewing counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.8 Viewing events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.9 Display output relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.10 Viewing digital inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.11 Display LED's . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.12 Viewing relay data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.13 Diagnostic display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2 MAIN SETTING CHANGE MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.1 Select current settings group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.2 Change main settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.3 Change spare settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.4 Set output relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.5 Set digital inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.6 LED Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.7 Set alphanumeric code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.8 LCD back-lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3 TEST MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14 14 14 15 15 15 16 16 16 16 17 17 17 18 18 19 19 20 20 20 21 21 21 22 22

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MX3IPG2A

MDE/C133 2561 001

7. APPLICATION AND USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 8. INSTALLATION - TRANSPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1 ESD Electrostatic charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2 Acceptance - storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3 Assembling and connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23 23 23 23

9. SETTING THE UNIT AT WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.1 Safety regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.2 Checking nameplate ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3 Final test with gauging of the attachment X2/IPG2A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24 24 24 24

APPENDIX A - Network data exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

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MX3IPG2A 1. TECHNICAL DATA This device belongs to the Modulex 3 line and digitally processes the currents and voltages injected into the rotor winding of synchronous machines, through the use of the attachment X2/IPG2A, to provide a rotor ground protection besides a number of additional functions, among which are the direct over- and undervoltage monitoring (Vaux control). The user interface is available locally through a display unit, and remotely, through a LONWORKS (TM) field bus with a control and monitoring system. It is furthermore capable of communicating with a Personal Computer through a connector located on the relay front and an interface programme. This feature makes it easier and safer to programme the setting parameters and configure and read the set values, measurements and logged events; the programming can also be taken from previously created files. Protective functions: Ÿ minimum resistance with two thresholds with definite time operating characteristic Ÿ injected overcurrent with one threshold with definite time operating characteristic Ÿ injected undervoltage with fixed threshold with fixed time operating characteristic Ÿ injected overvoltage with fixed thresholds with fixed time operating characteristic Ÿ direct undervoltage with two thresholds with definite time operating characteristic Ÿ direct overvoltage with two thresholds with definite time operating characteristic Ÿ possibility of two groups of settings, namely main and spare

MDE/C133 2561 001 Ÿ selection of dialogue language (Italian, English, French and Spanish) Ÿ self-monitoring with detailed indication of fault and alarm type through LED's and "normally energized" output relay (X6) Ÿ possibility of serial communication both with a local PC or via a LONWORKS (TM) field bus Ÿ three auxiliary timers available free for allocation to digital inputs Ÿ possibility of assigning one or more device functions to each output relay and LED Ÿ possibility of separately setting all output relays as "all normally energized" or "all normally normally de-energized" Ÿ possibility of selecting, for each output relay and LED, the monostable or bistable (hand-reset) operating mode Ÿ possibility of assigning a minimum pulse width to each output relay Ÿ opto-insulated digital inputs programmable for lockout, drive and reset functions, each input being enabled by normal energizing or de-energizing. Optionally, they may be used to supervise the tripping circuit for continuity Ÿ a partial and a total counter per trip threshold MINIMUM RESISTANCE PROTECTION (rotor ground) Settings first threshold R 0.95 < 1.05 ≤ 50 ms ≤ 30 ms

Operating ranges service temperature: -10 °C ÷ +60 °C storage and transport temperature: -25 °C ÷ +80 °C relative humidity: < 95% with no formation of condensate vibration: IEC255-21-1; class 2; 0.075mm 10-60Hz; 1g 60-500Hz Weight total:

2.5 Kg

MX3IPG2A Protection Class device: upon request when flush-mounted in a panel: terminal board with mounted cover:

MDE/C133 2561 001 2. GENERAL CHARACTERISTICS IP52 IP66 IP20

Insulation To ground and between two independent circuits whatsoever: 2 kV, 50 Hz per minute Impulse test: 5 kV 1.2/50 µs Electromagnetic compatibility 89/336/CEE : EN50081-2 EN50082-2 Directive For industrial environments UNIPEDE NORM(SPEC)13 "Automation and control apparatus for generating station and substation" ENEL R_EMC_02 "Apparati di automazione e controllo per centrali e stazioni elettriche". conditions of electromagnetic compatibility: IEC 1000-4-8 EN 61000-4-8 lev.5; 1000 A/m IEC 1000-4-10 EN 61000-4-10 lev.5; 100 A/m IEC 1000-4-3 ENV 50140 lev.3; 10 V/m 77B(Sec)1 ENV 50204 lev.3; 10 V/m IEC 1000-4-2 EN 61000-4-2 lev.4; 8kV contact;15kV air-break 77A/120/CD lev.4 / 3; 300V / 10-1-1-10 V IEC 1000-4-5 EN 61000-4-5 lev.4; 4kV 1.2/50 µs IEC 1000-4-12 EN 61000-4-12 lev.3; 2.5 kV IEC 1000-4-4 EN 61000-4-4 lev.4; 4 kV 77B/144/DIS ENV 50141 lev.3; 10 V 77A(Sec)99 lev.2; 10% IEC 1000-4-11 EN 61000-4-11 > 20 ms IEC/CISPR 11 EN 55011 group 1 class A Reference standards CEI 95-1 EN 60255-6 IEC 255 Low voltage directive 73/23/CEE

The device features a mechanical casing that is 4U in height, and as wide as to allow up to 4 pieces to be accommodated in a 19" rack, in addition to normal flush mounting. The casing is made of a hot-galvanized PVC-coated plate frame inside which the moving part that carries all the electronic circuits and the local interface slides on guides. The pullout action is facilitated by the presence of special "handles" which, when the device is "plugged in", are also used to lock the two parts. The aluminium frame of the moving part renders the latter excellently rigid. The device-system interface terminal blocks are located on top of the casing and, for each electrical connection, a screw clamp is available apt to receive up to 2 cable terminals, 4mm2 in size. Using a special accessory that is included in the supply, the connection can also be made through Faston members. Special error-fighting codes do not allow relays other than those compatible with the housing to be inserted. A cover lid classes the terminal block within the IP20 protection class. When the moving part is pulled out, the current inputs are automatically short-circuited, whereas the voltage and auxiliary circuits are disconnected. The device front bears two labels: one plate lists the factory configuration of the device, namely auxiliary voltage, rated current and frequency; The other plate, always in accordance with the factory configuration, provides an explanation of LED's indications. Both labels are easily replaced with new ones, which can bear any information as required by the client. As far as the factory configuration relevant to output relays, LED's, digital inputs and relevant settings are concerned, please refer to tables A, B and C.

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MX3IPG2A

MDE/C133 2561 001

2.1 Selecting rated values

3. OPERATION

The selection of the rated current between 1 or 5 Ampères for phase protection is made by acting on a jumper that is located by one of the following points: S20, S21, S22, S23, which can be reached once the relay has been pulled out (see fig. 1, 4a, 4b, 4c, 4d).

3.1 Underresistance protection (rotor ground)

TOP

RELAY FRONT

The underresistance protection works by comparing the ratio between voltage and current injected into the attachment X2/ IPG2A with the set thresholds (R characters will be displayed, too: [FAULT ] [.....FGHIJ... ] The second line displays one or more fault identification codes. The following table provides the fault codes and the corresponding fault description: Code fault description A X1 relay coil interrupted or related driver B X2 relay coil interrupted or related driver C X3 relay coil interrupted or related driver D X4 relay coil interrupted or related driver E X5 relay coil interrupted or related driver F internal feeder failure G EEPROM failure H Internal RAM failure I External RAM failure J Analogue to Digital converter K communication board failure or enabled but not configured L internal clock failure If jumper S6 (see fig.2) that enables the communication board is connected when the board is not present, the K code shows up, as if a failure were detected in the board. d) As far as the NON-VITAL FAULTS are concerned, by pressing the key ï anywhere in the sub-menu you go back to the main display menu: [ DIAGNOSTIC ] [ ]

MX3IPG2A whereas, as regards the VITAL FAULTS, you can only leave the diagnostic sub-menu, if the device allows you to do that, by entering the “settings change” menu.

MDE/C133 2561 001 ñ [ [

ñ 2) Inhibited device The condition of “inhibited device” is displayed as follows: [FAULT ] [..............P ] This condition can only be reset by entering the "settings change“ menu (it is however necessary to confirm when you are prompted to SAVE CHANGES, although no setting has been changed). Warning: even simply view the set parameters from the “settings change” menu, since upon leaving this condition, the device will not be inhibited any longer. If, beside inhibiting the device, you have also deconfigured it, the return to operation causes a fault K message to be displayed until the unit is configured anew (see paragraph 4.14). 6.2 MAIN SETTING CHANGE MENU By pressing the key anywhere in the display menus for at least 2s, the main settings change menu is entered. Thence, several sub-menus can be entered (tree- structure). When the settings change function is enabled, the green LED (RUN) lights up blinking. If the settings change menu is already acceded through a PC or a network, any local change is inhibited, and the following message will be displayed: [SETTINGS CHANGE] [NOT AVAILABLE ] The access priority to the changing function among PC, network and keyboard is time-dependent. During the settings change operations, the device continues working with the old settings. All the displays can be made permanent. [SETTINGS IN USE:] [ MAIN]

ñ

ò

[SETTINGS CHANGE] [MAIN ]

ñ

ò

[SETTINGS CHANGE] [SPARE ]

ñ [ OUTPUT [

ñ [DIGITAL [

ñ [ [

ò RELAYS ] ]

ò INPUTS ] ]

ò

LED

] ]

settings in use ð select of current setting group ð change main settings ð change spare settings ð output relays settings ð digital inputs settings ð LED's settings

ò

RELAY DATA

] ]

ò

[ LCD ] [AUTOMATIC RETURN]

ð setting of alphanumeric code ð permanent display back-lighting (LCD) enabled

By pressing the key anywhere in the changing menus for at least 2 seconds, you go back to the main display menu, but you are first prompted to confirm or discard the changes made: [NEW SET.CONFIRM?] [< NO YES >] By pressing ï all the changes made are discarded, whereas by pressing ð the changes made are confirmed. The green LED (RUN) stops blinking and becomes permanent. If upon confirming the changes, a fault is detected, the settings are not accepted as long as the fault event persists. This state is signalled for 3s by the following message: [SETTINGS CHANGE] [DELAYED ] once the event is over, you are prompted to confirm the changes made again. If the transfer is interrupted is due to a digital input being enabled which cannot be disabled at the moment and you need to change the settings, the device must be inhibited; after that, you can start changing the settings (see paragraphs 4.14 and 6.1.13). Note: the “change settings” function can even be implemented when the device is “forced” to use the SPARE SETTINGS. In such a case, the system only interrupts the selection of SETTINGS IN USE: MAIN until the external forcing signal disappears. If a setting is changed when the system is “forced” from the outside, the following message is displayed: [SPARE SETTINGS] [FROM EXT.CONTROL] All the following examples take their start from the main settings change menu. 6.2.1 Select current settings group a) Press the key ò or ñ until the following message is displayed: [SETTINGS IN USE:] [ MAIN] b) After pressing the key ð, the current settings can start being changed. The following message is displayed: [SETTINGS IN USE:] [ MAIN] c) By pressing ò or ñ, the following message is displayed: [SETTINGS IN USE:] SPARE] [

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MDE/C133 2561 001

d) By pressing the key ï the new selection is confirmed, and the system goes back to the main settings change menu. The following message is displayed: [SETTINGS IN USE:] [ SPARE]

By pressing ñ the digit is changed (on reaching number 9 the units will increase by 1) until the display unit shows: [R< ON ] [R< 1015 Ω ]

6.2.2 Change main settings

Press ï to move back to the beginning of the line and go back to the main editing menu: [SETTINGS CHANGE] [MAIN ]

a) Press the key ò or ñ until the following message is displayed: [SETTINGS CHANGE] [MAIN ] b) By pressing the key ð , you enter the main settings change sub-menu, which contains all the parameters already listed in § 6.1.3. c) By pressing the keys ò or ñ , you can vertically scroll the submenu, and by pressing the key ð you can start changing the displayed parameter. The change can be made by pressing the keys ò or ñ . d) By repeatedly pressing the key ï anywhere in the submenu, you go back to the main changing menu: [SETTINGS CHANGE] [MAIN ] Example of setting Let us suppose we need to enable and set the rotor ground threshold R< to 1015 Ohm starting from an initial setting of 990, OFF. Go through steps a) and b) Press ò or ñ until the threshold to be changed is selected on display: OFF] [R< [R< 0990 Ω ] Press ð to start changing the selected setting I>>>,the display unit will show: OFF] [R< [R< 0990 Ω ] Press ò or ñ to set it ON and the display will show: [R< ON ] [R< 0990 Ω ] Press ï to move back to the beginning of the line. Thus, by pressing ò, you may move to the second line. Press ð to select the digit to be changed. In our case, by pressing 4 times the key ð, the display unit will show: [R< ON ] [R< 0990 Ω ] Press ñ to increase the selected numberuntil the value required by our example is reached: [R< ON ] [R< 0995 Ω ] Now, by pressing ï you select the third digit making up the setting, the display unit will show: [R< ON ] [R< 0995 Ω ]

pag. 20

Warning: In the event of the direct rated voltage setting range being changed, please remember to move the internal jumper (S20....S23) as follows: jumper closed setting range S20 30.00 - 300.00 V S21 3.00 - 30.00 V S22 0.30 - 3.00 V S23 0.03 - 0.30 V The movement of the jumper causes the setting to be changed, as the latter is multiplied times 10d where d is the distance between the old and the new jumper, for instance: old setting jumper S20 setting range 30-300 V set Un 165 V new setting jumper S23 setting range 0.03-0.30 V set Un 165 x 10(20-23)= 0.16 V 6.2.3 Change spare settings a) Press the key ò or ñ until the following message is displayed: [SETTINGS CHANGE] [SPARE ] b) By pressing the key ð , you enter the spare settings change sub-menu, which contains all the parameters already listed in § 6.1.5. c) By pressing the keys ò or ñ ,you can vertically scroll the submenu, and by pressing the key ð you can start changing the displayed parameter. The change can be made by pressing the keys ò or ñ . The settings change procedure mirrors that described in the example applying to the main settings. d) By pressing the key ï anywhere in the sub-menu, you go back to the main settings change menu: [SETTINGS CHANGE] [SPARE ] 6.2.4 Set output relays a) Press the key ò or ñ until the display shows: [OUTPUT RELAYS] [ ]

MX3IPG2A b) By pressing the key ð , you enter the output relay setting submenu, which contains all the parameters already listed in § 6.1.5 c) By pressing the keys ò or ñ , you can vertically scroll the submenu, and by pressing the key ð you can start changing the displayed parameter. The change can be made by pressing the keys ò or ñ. d) By pressing the key ï anywhere in the sub-menu, you go back to the main settings change menu: [OUTPUT RELAYS] [ ] Example of allocation Consider we need to allocated the trip of the overcurrent threshold R< to output relay X5 starting from an initial setting of R< allocated to X2 Go through steps a) and b) until the display unit shows: [R< TRIP] [REL X.2...] Each position after letter X is an output relay. More relays may be allocated to one function. Press ð to move to the relay you wish to associate. In our case, by pressing the key ð five times, the display unit will show: [R< TRIP] [REL X.2...]

MDE/C133 2561 001 c) By pressing the key ò or ñ the sub-menu is vertically scrolled, and by pressing the key ð, you can start changing the selected parameter. The change can be made by pressing the key ò or ñ. To switch from the main settings to the backup settings, the digital input number 1 (IN DIG 1) must be used SETTINGS SWITCH To reset the LEDs and the auxiliary relays, the digital input number 3 (IN DIG 3) must be used. RESET(LED+Xmem) The setting procedure mirrors that described in the example of output relay configuration. d) By pressing the key ï anywhere in the sub-menu, you go back to the main changing menu: [ DIGITAL INPUT ] [ ] 6.2.6 LED Settings a) Press the key ò or ñ until the display shows: [ LED ] [ ] b) By pressing the key ð , the LED setting sub-menu, which contains the parameters already listed in § 6.1.10., is entered.

By pressing ò or ñ the selected relay X5 is dissociated and the display unit will show: [R< TRIP] [REL X.2..5]

c) By pressing the key ò or ñ the sub-menu is vertically scrolled, and by pressing the key ð, you can start changing the displayed parameter. The change can be made by pressing the key ò or ñ . The setting procedure mirrors that described in the example of output relays setting.

By pressing ï you select the second relay, the display unit will show: [R< TRIP] [REL X.2..5]

d) By pressing the key ï anywhere in the sub-menu , you go back to the main changing menu: [ LED ] [ ]

Press ò or ñ to dissociate the selected relay, the display unit will show: [R< TRIP] [REL X....5] Press ï to move back to the beginning of the lineand return to the main editing menu: [OUTPUT RELAYS] [ ]

6.2.7 Set alphanumeric code a) Press the key ò or ñ until the display shows: [ RELAY DATA ] [ ] b) By pressing the key ð, you can change/set an alphanumeric code that identifies the device. The display will show, for instance: [PLANT IDENTIFIER] [CELL N. 17bis ]

6.2.5 Set digital inputs a) Press the key ò or ñ until the display shows: [ DIGITAL INPUT ] [ ] b) b) By pressing the key ð , you enter the digital input setting sub-menu, which contains all the parameters already listed in § 6.1.10.

c) By further pressing the key ð you select the character(s) to be changed, and by pressing ò or ñ all the capital and small letters of the alphabet, all the numbers and some special characters, among which the blank space, are vertically scrolled. d) By pressing the key ï, the cursor moves back to the beginning of the line (no character selected), and by further pressing the key ï , you go back to the main changing menu: [ RELAY DATA ] [ ]

pag. 21

MX3IPG2A

MDE/C133 2561 001

6.2.8 LCD back-lighting a) Press the key ò or ñ until the display shows: [ LCD ] [AUTOMATIC RETURN] b) By pressing the key ð, you can set the LCD back-lighting to permanent (OFF) or timed (ON). Let us assume the display shows: ON ] [ [ ] c) By pressing the keys ò or ñ, the current setting can be changed: [ [

OFF] ]

d) By pressing the key ï, you go back to the main changing menu: [ LCD ] [AUTOMATIC RETURN] 6.3 TEST MENU for at least 2s

By pressing the keys

anywhere in the main reading menus, the TEST function, which is highlighted by the blinking of the green LED (RUN), is enabled. [TEST [

LED] YES >]

ñ [TEST [

ò RELAY X1] YES >]

ñ [TEST [

ò RELAY X2] YES >]

ñ [TEST [

ò RELAY X3] YES >]

ñ [TEST [

ò RELAY X4] YES >]

ñ [TEST [

ò RELAY X5] YES >]

ð TEST LED’s L1-L8 and display ð TEST relay X1 ð TEST relay X2 ð TEST relay X3 ð TEST relay X4 ð TEST relay X5

The test to be carried out on the auxiliary relay X.. makes the latter trip, so that the associated command and/or signal can be sent. That is why, before running it, the systems prompts you to further confirm its execution: [ ARE YOU SURE? ] [< NO YES >] If, upon confirming the execution, some starting or tripping commands are already present or a digital input combined with a timer proves to be enabled, the test is not performed, and this condition is signalled by the following message: [TEST ] [NOT AVAILABLE ] The LED and display test makes them light up for two seconds. Therefore, it can be run at any time during operation

pag. 22

By pressing the two keys

for two seconds

anywhere in the test menu, the TEST function is disabled. The green LED (RUN) stops blinking, and the system goes back to the main display menu.

MX3IPG2A

MDE/C133 2561 001

7. APPLICATION AND USE

8. INSTALLATION - TRANSPORT

The device is suitable to detect the ground rotor faults for synchronous machines. It is also suitable to monitor direct voltage (Vaux)

8.1 ESD Electrostatic charges The relay uses electronic components that are highly sensitive to electrostatic charges. Therefore, the operator who happens to handle the moving part of the equipment and come in contact with the electronic circuits, must take preventive measures to avoid damaging the relay: - before removing the movable part, the operator must reach the same potential as the equipment by touching the case - avoid touching electronic components, printed circuit boards and connectors, as far as this is possible. Handle it by using the mechanical frame. - lay the device on surfaces that are antistatic or feature the same potential as the operator's. - only store and transport the relay by using the special antistatic bag. Special electronic devices require the operator and the unit to be both grounded along with any measuring instrument, when this is possible. As far as the following action is possible and reasonable, do not pull out the moving part from the casing to avoid causing mechanical and electrostatic damages to the protection. 8.2 Acceptance - storage Although protective relays are generally of robust construction, they require a careful treatment prior to installation on site, since they must be carefully packed and unpacked, without applying any force and using suitable tools. Once supplied, the relays must be thoroughly inspected to ensure that they have not undergone shipping damages. If the relays are not immediately installed upon reception, they must be stored in places free from dust and moisture, in their original packing. Storage temperature: -25°C + 80°C. 8.3 Assembling and connection - Remove the protective cover until the four fastening holes become visible. - Place the equipment into the hole of the panel-board and secure it by fastening the four screws (see fig. 6) - Connect the ground screw of the equipment to the protection ground of the panel-board using connectors of suitable gauge (>4mm2) and as short as possible (] -press ð, the display unit will show: [ CONFIRM? ] [< NO YES >] -press ð - remove the connection among terminals 9B-10B-12B of the attachment X2/IPG2A - leave Settings Change Checking connections

I WARNING hazardous voltages may remain in the device even when the latter has been de-energized or pulled out of its casing (capacitor's storage) 9.3 Final test with gauging of the attachment X2/IPG2A Inject auxiliary voltage into the device. On switching on, after a long time of power failure, the device can indicate an 'L' type fault (internal clock), a NON-VITAL FAULT which does not affect the remaining functions: by updating DATE and TIME, the normal service conditions are restored. If the system is running and the relay settings are unknown, the unit must be inhibited from operating before feeding it with voltage by pressing the “settings change” key (see § 4.14 and 6.1.13 clause 2) to avoid troubles. Select the rated frequency of the system on the device, set the rated current and the rated direct voltage. Load the settings and configure the relays, the LED’s and the digital inputs as per the design plans. Since the unit is equipped with a self-monitoring system, all hardware and software failures possibly occurring are automatically detected; this makes it useless to test the thresholds for accuracy, which can however be tested by making reference to the tolerances specified on the catalogue.

pag. 24

- Connect between rotor winding and mass a resistance that ranges between 200 and 6500 Ohm in value and check it matches the values displayed in the MEASUREMENT menu. - Inject a direct voltage into the input (terminals 10-9) and check it matches the values displayed in the MEASUREMENT menu. - Test each output relay through the procedure given in the TEST MENU paragraph, simultaneously test the related external circuit. - Check the wiringof the digital inputs to ensure it matchesthe provisions of the design plans. If the relay has not worked correctly or shows VITAL failures, it must be put out of order and sent back to the factory for repair or re-gauging. The presence of a NON-VITAL fault does not cause an ill-timed operation, but demands an analysis of the fault type to assess its importance (for instance, a failing end relay should be replaced with another end relay that is not currently being used or, else, whose function is not strictly required). The possibility of exchanging the relays makes it possible to maintain the protection scheme working during repairs, so that any faulty relay can be replaced with a new one of the same type.

MX3IPG2A

MDE/C133 2561 001

To complete the start-up stage, before setting the system at work, ensure that: - the device settings match the design specifications. - the device bears the correct plant-identifying alphanumeric code. - all the device memories (LED’s, maximum values, partial counters and wear index) are reset. - the green Uaux and RUN LED’s are lit up with permanent light; in the event of network connection, the green RxTx LED must be lit up, too. - the LED’s indicating labels and the device rating plate display the correct information. You can leave the relay with the display showing any of the windows of the main reading menu.

pag. 25

MX3IPG2A

MDE/C133 2561 001

SETTING RANGE OF Un: 30 - 300 V

SETTING RANGE OF Un: 3 - 30 V

Position of jumper n S20

Position of jumper n S21 TOP SIDE

TOP SIDE

RELAY FRONT

RELAY FRONT

fig. 4a

fig. 4b

SETTING RANGE OF Un: 0.3 - 3 V

SETTING RANGE OF Un: 0.03 - 0.3 V

Position of jumper n S22

Position of jumper n S23 TOP SIDE

TOP SIDE

RELAY FRONT

fig. 4c

Warning: jumpers n S1 - S3 - S7 shall not be removed (as per the original factory settings)

pag. 26

RELAY FRONT

fig. 4d

MX3IPG2A

MDE/C133 2561 001

fig. 5 Warning: In the event of one sole polarity of the rotor winding (BRUSHLESS energizer) being available, the injectors (terminals 9B - 10B) shall be connected to one another.

pag. 27

MX3IPG2A

MDE/C133 2561 001

OVERALL DIMENSIONS

The casing can even be mounted on a 19" rack panel, R4MX3 type, 4U in height

DRILLING DIME

TERMINALS

fig. 6

pag. 28

MX3IPG2A

MDE/C133 2561 001

OVERALL DIMENSIONS AND DRILLING DIME - ATTACHMENT X2

HOLES

HOLES

DRILLING WITH REAR CONNECTIONS

DRILLING WITH REAR CONNECTIONS

fig. 7

pag. 29

MX3IPG2A

MDE/C133 2561 001

WARNING: The factory settings may prove not to suit the system. Therefore, the device must be configured anew upon installation

tab. A - FACTORY SETTINGS

1

RELAY 2 3 4 5 X X X X X X X

X X X X

CONTROL MATRIX DESCRIZIONE del. start of first underresistance threshold first underresistance threshold trip del. start of 2dn underresistance threshold

FUNZIONE R< START R< TRIP R TRIP U~ < TRIP U~ > TRIP

del. start of first dir. undervolt. threshold scatto first dir. undervoltage threshold del. start of second dir. undervolt. threshold second dir. undervoltage threshold trip del. start of first dir. overvoltage threshold

U-< START U-< TRIP U- TRIP U->> START U->> TRIP t_X1 TRIP t_X2 TRIP

timer tX3 overtime first digital input fed second digital input fed third digital input fed

t_X3 TRIP IN DIG 1 IN DIG 2 IN DIG 3

minimum pulse width bistable operation normally energized end relays

t_IMP MEMOR

normally de-energized end relays

pag. 30

1

2

3

LED'S 4 5 6

7

8

X X X X X X X X X

/ / / / / / / X X X X X X X

/

/ not to be allocated X allocated

MX3IPG2A

MDE/C133 2561 001

WARNING: The factory settings may prove not to suit the system. Therefore, the device must be configured anew upon installation

tab. B - TABLE OF SETTINGS CONTROL MATRIX

DIGITAL INPUTS 1 2 3

DESCRIPTION input enabled by normal de-energizing first underresistance threshold trip lock sec. underresistance threshold trip lock

FUNCTION BLOC. R< BLOC. R BLOC. U~ > BLOC. U~ < BLOC.U-< BLOC.U- BLOC.U->> t_X1 t_X2 t_X3

switching to spare settings reset LED's and output relays

SETTINGS SWITCH RESET (LED+Xmem)

/

/ /

/ X

/ not to be allocated X allocated

pag. 31

MX3IPG2A

MDE/C133 2561 001

WARNING: The factory settings may prove not to suit the system. Therefore, the device must be configured anew upon installation

tab. C - FACTORY SETTINGS TABELLA DI REGOLAZIONE DESCRIPTION

FUNCTION ON

rated frequency direct voltage range direct rated voltage

fn IN_UUn-

first underresistance threshold starting signalling delay R< trip delay R<

R< tstart t1

second underresistance threshold starting signalling delay R first dir. undervoltage threshold starting signalling delay U-< trip delay U-< second dir. undervoltage threshold

t3 U-< tstart t4 U- tstart

trip delay U->> second dir. overvoltage threshold starting signalling delay U->> trip delay U->> min. pulse width of end relays

t6 U->> tstart t7 t_imp

additional timer additional timer additional timer fault recorder trigger fault recorder pretrigger delay

t_X1 t_X2 t_X3

settings: MAIN

pag. 32

MAIN OFF VALUE

ON

SPARE OFF VALUE

50 Hz S20 110 V

/ / /

X

2000 Ohm 0s 10 s

X

2000 Ohm 0s 10 s

X

500 Ohm 0s 3s 0.022 A 0s

X

500 Ohm 0s 3s 0.022 A 0s

X

X

X

X

X

timed LCD backlighting: OFF

5s 0.8 Un 0s 5s 0.7 Un 0s 1s 1.15 Un 0s 5s 01.2 Un 0s 1s 0.1 s 1s 5s 10 s TRIP 2s

/ / /

X

/ / /

5 0.8 0 5 0.7

X

X

s Un s s Un

0s 1s 1.15 Un 0s

X

/

/

5s 1.2 Un 0s 1s /

/ / / / /

/ / / / /

/ / / / /

X

/ not to be allocated: the same settings as the MAIN ones apply

MX3IPG2A

MDE/C133 2561 001

tab. D

1

RELAY 2 3 4 5

CONTROL MATRIX DESCRIPTION delayed start of first underresistance thr.

FUNCTION R< START

first underresistance threshold trip delayed start of sec. underres. threshold first underresistance threshold trip overcurrent threshold start overcurrent threshold trip

R< TRIP R TRIP

undervoltage threshold trip overvoltage threshold trip del.st. first dir. undervoltage threshold first dir. undervoltage threshold trip del.st. second dir. undervoltage threshold

U~ < TRIP U~ > TRIP U-< START U-< TRIP U- TRIP U->> START U->> TRIP

timer tX1 overtime timer tX2 overtime timer tX3 overtime first digital input fed second digital input fed

t_X1 TRIP t_X2 TRIP t_X3 TRIP IN DIG 1 IN DIG 2

third digital input fed min. pulse width bistable operation normally energized end relays

IN DIG 3 t_IMP MEMOR

normally de-energized end relays normally energized end relays

1 2 3

LED'S 4 5 6

7 8

/

/

/

/

/

/

/

/

/

not to be allocated

pag. 33

MX3IPG2A

MDE/C133 2561 001

tab. E CONTROL MATRIX

DIGITAL INPUTS 1 2 3

DESCRIPTION input enabled by normal de-energizing first underres. threshold trip lock

FUNCTION BLOC. R<

sec. underres. threshold trip lock overcurrent threshold trip lock overvoltage threshold trip lock undervoltage threshold trip lock first dir. underv. threshold trip lock

BLOC. R BLOC. U ~> BLOC. U ~< BLOC.U-<

sec. dir. underv. threshold trip lock first dir. overv. threshold trip lock sec. dir. overv. threshold trip lock timer tX1 start timer tX2 start

BLOC.U- BLOC.U->> t_X1 t_X2

timer tX3 start switching to spare settings reset LED's and output relays

t_X3 SETTINGS SWITCH RESET (LED+Xmem)

/

pag. 34

/

/ /

/

not to be allocated

MX3IPG2A

MDE/C133 2561 001

tab. F TABLE OF SETTINGS DESCRIPTION

FUNCTION ON

rated frequency direct voltage range direct rated voltage

fn IN_UUn-

first underresistance threshold

R<

starting signalling delay R< trip delay R< second underresistance threshold starting signalling delay R tstart t3 U-< tstart

trip delay U-< second dir. undervoltage threshold starting signalling delay U- trip delay U->> second dir. overvoltage threshold starting signalling delay U->> trip delay U->>

tstart t6 U->> tstart t7

min. pulse width of end relays additional timer additional timer additional timer fault recorder trigger

t_imp t_X1 t_X2 t_X3

fault recorder pretrigger delay

settings: MAIN settings: SPARE

timed LCD backlighting: ON timed LCD backlighting: OFF

MAIN OFF VALUE

ON

SPARE OFF VALUE

/ / /

/ / /

/ / /

/ / / / /

/ / / / /

/ / / / /

/

/

/

/ not to be allocated: the same settings as the MAIN ones apply

pag. 35

MX3IPG2A

MDE/C133 2561 001

APPENDIX A - Network data exchange DESCRIPTION

DIRECTION

TIMING

relay--> centre relay--> centre relay--> centre

AR AR AR

relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay

AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR AR

Present measurementsi resistance direct voltage alternating voltage alternating current

relay--> centre relay--> centre relay--> centre relay--> centre

T e AR T e AR T e AR T e AR

Maximum measurements overcurrent

relay--> centre

AR

Identification commercial name plant identifier direct voltage range Setting data (main and spare) settings in use date of last change time of last change language in use rated frequency direct rated voltage LCD setting min. pulse width of end relay timer t_X1 delay timer t_X2 delay timer t_X3 delay first underresistance threshold included/excluded first underresistance threshold value first underresistance threshold starting delay trip delay per first underresistance threshold second underresistance threshold included/excluded second underresistance threshold value second underresistance threshold starting delay trip delay for second underresistance threshold overcurrent threshold included/excluded overcurrent threshold value overcurrent threshold starting delay overcurrent threshold trip delay first dir. undervoltage threshold included/excluded first dir. undervoltage threshold value first dir. undervoltage threshold starting delay trip delay for first dir. undervoltage threshold second dir. undervoltage threshold included/excluded second dir. undervoltage threshold value second dir. undervoltage threshold starting delay trip delay for second dir. undervoltage threshold first dir. overvoltage threshold included/excluded first dir. overvoltage threshold value first dir. overvoltage threshold starting delay trip delay for dir. overvoltage threshold second dir. overvoltage threshold included/excluded second dir. overvoltage threshold value second dir. overvoltage threshold starting delay trip delay for second dir. overvoltage threshold

pag. 36

MX3IPG2A DESCRIPTION

MDE/C133 2561 001 DIRECTION

TIMING

Event log recorder date / time of event first underresistance threshold start first underresistance threshold trip second underresistance threshold start second underresistance threshold trip overcurrent threshold start overcurrent threshold trip alternating undervoltage threshold trip alternating overvoltage threshold trip first direct overvoltage threshold start first direct undervoltage threshold trip second direct undervoltage threshold start second direct undervoltage threshold trip first direct overvoltage threshold start first direct overvoltage threshold trip second direct overvoltage threshold start second direct overvoltage threshold trip state of digital input 1 state of digital input 2 state of digital input 3 state of timer tX_1 state of timer tX_2 state of timer tX_3

relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre

VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR VP and AR

States first underresistance threshold trip second underresistance threshold trip undercurrent threshold trip alternating undervoltage threshold trip alternating overvoltage threshold trip first direct undervoltage threshold trip second direct undervoltage threshold trip first direct overvoltage threshold trip second overvoltage threshold trip state of digital input 1 state of digital input 2 state of digital input 3 state of timer tX_1 state of timer tX_2 state of timer tX_3

relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre

AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.) AV (a.p.)

Locks first underresistance threshold lock second underresistance threshold lock overcurrent threshold lock first direct undervoltage threshold lock second direct undervoltage threshold lock first direct overvoltage threshold lock second direct overvoltage threshold lock

centre--> relay centre--> relay centre--> relay centre--> relay centre--> relay centre--> relay centre--> relay

AV AV AV AV AV AV AV

Counters total trips of first underresistance threshold partial trips of first underresistance threshold total trips of second underresistance threshold partial trips of second underresistance threshold total trips of overcurrent threshold partial trips of overcurrent threshold total trips of first direct undervoltage threshold partial trips of first direct undervoltage threshold total trips of second direct undervoltage threshold partial trips of second direct undervoltage threshold total trips of first direct overvoltage threshold partial trips of first direct overvoltage threshold total trips of second direct overvoltage threshold partial trips of second direct overvoltage threshold

relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre

AR AR AR AR AR AR AR AR AR AR AR AR AR AR

pag. 37

MX3IPG2A DESCRIPTION

MDE/C133 2561 001 DIRECTION

TIMING

relay--> centre relay--> centre relay--> centre relay--> centre relay--> centre

AR AR AR AR AR

Output relay X1 setting X2 setting X3 setting X4 setting X5 setting

relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay

AR AR AR AR AR

LED's L1 L2 L3 L4 L5 L6 L7 L8

relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay

AR AR AR AR AR AR AR AR

relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay relay--> centre--> relay

AR AR AR AR AR AR

Diagnostics

relay--> centre

AV

Reset LED's relay resettable counters maximum measurements

centre--> centre--> centre--> centre-->

AR AR AR AR

Commands output relays enabling settings switch settings switch survival delay

centre--> relay centre--> relay centre--> relay

AV and AR AV AR

relay--> centre--> relay relay--> centre--> relay centre--> relay centre--> relay relay--> centre

AR AR AR AR AR

centre--> relay centre--> relay relay--> centre relay--> centre

S S AR AR

Events date time tripped threshold resistance value rated voltage value

setting setting setting setting setting setting setting setting

Digital inputs input 1 setting input 1 setting On HIGH/LOW input 2 setting input 2 setting setting On HIGH/LOW input 3 setting input 3 setting On HIGH/LOW

Fault recorder fault recorder starting parameters fault recorder pretrigger delay fault recorder trigger command fault recorder reset time fault recorder data Clock date time date time

KEY AR aperiodic message AV (a.p.) aperiodic variable sent upon high-priority variation AV aperiodic variable transmitted upon variation VP variable upon request T periodic variable with periods programmable between 1 and 5 s S synchronization

pag. 38

relay relay relay relay

ALSTOM T&D Protection & Côntrole is bound by the foregoing specifications, dimensions and diagrams only after confirmation.

ABCD ALSTOM FIR S.p.a. - via Viscardi, 5 - 24016 SAN PELLEGRINO T. - BG - ITALIA Tel. ++39 0345 28111 - Fax ++39 0345 22590 - Telex 301152 FIR I - E-mail: [email protected]