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BRITISH STANDARD
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Power transformer and reactor fittings — Part 6: Cooling equipment — Removable radiators for oil-immersed transformers
The European Standard EN 50216-6:2002 has the status of a British Standard
ICS 29.180
NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
BS EN 50216-6:2002
BS EN 50216-6:2002
National foreword This British Standard is the official English language version of EN 50216-6:2002.
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The UK participation in its preparation was entrusted to Technical Committee PEL/14, Power transformers, which has the responsibility to: —
aid enquirers to understand the text;
—
present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed;
—
monitor related international and European developments and promulgate them in the UK.
A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 22 March 2002
Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued.
Amendments issued since publication Amd. No. © BSI 22 March 2002
ISBN 0 580 39319 4
Date
Comments
EN 50216-6
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
January 2002
ICS 29.180
Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSI
English version
Power transformer and reactor fittings Part 6: Cooling equipment Removable radiators for oil-immersed transformers Accessoires pour transformateurs de puissance et bobines d'inductance Partie 6: Appareillage de refroidissement Radiateurs détachables pour transformateurs immergés dans l'huile
Zubehör für Transformatoren und Drosselspulen Teil 6: Kühlungseinrichtungen Abbaubare Radiatoren für Öltransformatoren
This European Standard was approved by CENELEC on 2001-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels © 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50216-6:2002 E
EN 50216-6:2002
-2-
Foreword This European Standard was prepared by the Technical Committee CENELEC TC 14, Power transformers.
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The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50216-6 on 2001-07-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement
(dop)
2002-08-01
- latest date by which the national standards conflicting with the EN have to be withdrawn
(dow)
2004-08-01
EN 50216-6 is to be read in conjunction with EN 50216-1. __________
-3-
EN 50216-6:2002
Contents
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Page 1
Scope .......................................................................................................................... 4
2
Normative references................................................................................................. 4
3
Manufacturing prescription ....................................................................................... 3.1 Radiator types defined in this document.............................................................. 3.2 General characteristics........................................................................................ 3.3 Material ............................................................................................................... 3.4 Dimensions and tolerances ................................................................................. 3.5 Lifting attachments and mechanical connections................................................. 3.6 Surface protection ...............................................................................................
4
Tests............................................................................................................................ 5 4.1 Routine tests ....................................................................................................... 5 4.2 Type tests............................................................................................................ 6
5
Preparation for transport and storage ...................................................................... 6
4 4 4 4 5 5 5
EN 50216-6:2002
1
-4-
Scope
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EN 50216-6 covers radiators, i.e. the thermal exchangers for the oil cooling with natural ambient air circulation. Such radiators are made with several elements with cooling channels connected in parallel. This standard defines the overall dimensions and ensures the mechanical interchangeability achieving the same thermal performances.
2
Normative references
Addition to EN 50216-1: ISO 4406
3
1999
Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles
Manufacturing prescription
3.1
Radiator types defined in this document
The designations to identify the types of radiator are FA
radiators with square flanges and elements of unequal length (see Figure 1)
FG
radiators with square flanges and elements of equal length (see Figure 2)
FTR
radiators with square flanges and elements of equal length and with several elements with reduced width (see Figure 3)
FTTO
tangential radiators with oval flanges and elements of equal length (see Figure 4)
FR
radiators with square flanges with lowered upper header (see Figure 5)
FTT
tangential radiators with square flanges and elements of equal length (see Figure 6)
3.2
General characteristics
The main radiator components are - headers, - connection flanges, - elements. The headers shall be made in such a way to guarantee a complete filling and a complete draining. Oblique elements or reduced elements are acceptable. The layout is given in Figures 1 to 6. The radiators shall be provided with an air vent device on the top header and a draining device on the bottom header. 3.3
Material
The radiator elements shall be made of stamped steel plates or steel pipes (round or ovaled) with a thickness of 1,2 mm, in conformity with ISO, EN or equivalent standards. Other thicknesses may be applicable.
-5-
3.4
EN 50216-6:2002
Dimensions and tolerances
To ensure interchangeability between radiators of different manufacturers, the tolerances given in the figures shall be maintained. The radiators shall not deflect from horizontal by more than 2 mm per meter without oil.
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The radiators shall be vacuum resistant if required. 3.5
Lifting attachments and mechanical connections
3.5.1
Lifting attachments
The radiators shall have a lifting attachment. This lifting attachment shall have at least one lifting lug consisting of a hole with a diameter not less than 30 mm. 3.5.2
Mechanical connections
A facility to make a mechanical connection between radiators shall be provided. 3.6
Surface protection
3.6.1
Internal surfaces
The internal surfaces shall be free of foreign bodies and transformer oil contaminants according to IEC 60296. They shall be washed with oil for transformers according to ISO 4406. The oil shall conform to IEC 60296. An appropriate velocity of the oil during the washing operation is required. If the cooling liquid is different from transformer oil according to IEC 60296, the radiators shall be treated in agreement with the purchaser. Internal painting shall be as agreed between the manufacturer and the purchaser. 3.6.2
External surfaces
The process of anti-rust treatment and painting shall be agreed between manufacturer and purchaser. Due regard is to be paid to environmental conditions. The environmental conditions shall be according to EN 60721-3-4.
4
Tests
4.1 4.1.1 4.1.1.1
Routine tests Visual inspection of surfaces External surfaces
When carrying out the visual inspection, there shall be no excessive flexibility and deformations. Fillers of any nature are not acceptable.
EN 50216-6:2002
4.1.1.2
-6-
Internal surfaces
The inspection shall be carried out by visual means where possible and then in addition by flushing using a filter to detect the presence of any foreign bodies or contaminations. If this inspection is not satisfactory, further flushing shall be carried out.
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4.1.2
Leakage test
The leakage test shall be carried out according to one of the following two methods. Other methods with other testing values may be carried out by agreement between manufacturer and purchaser. 4.1.2.1
Test with oil
The radiators are filled with transformer oil at a temperature of (60 ± 5) °C and are kept at a pressure of 200 kPa for 3 h. There shall be no oil leaks. Compliance is checked by visual inspection. 4.1.2.2
Test with compressed air
The radiators are filled with air at a pressure of 200 kPa. There shall be no air leaks, however small. Compliance is checked by immersing the radiator in a tank filled with water. 4.2 4.2.1
Type tests Inspection of the external paint
The paint thickness shall be checked by means of a scratch thickness gauge in the accessible points and by means of a magnetic thickness gauge in the invisible points. The thickness of the single coats shall comply with that specified when ordering. Regarding the surface protection specified in 3.6, a checker-work test can be applied or another test defined by agreement between manufacturer and purchaser.
5
Preparation for transport and storage
Radiators shall be clean and free of all foreign bodies and other contaminations. Radiator flanges shall be covered to prevent the ingress of contamination during transport or storage and steps shall be taken to ensure that there is no deterioration caused by condensation. All measures shall be taken to avoid mechanical damage to the elements.
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EN 50216-6:2002
Dimensions in mm Vent plug a1
Lifting lug Fixing plate 30
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18
55° 50
C
L1 ± 2
Thickness of an element: 30 max.
+
max. 50 - 1,5 Lower value is applicable
Fixing plate 30 Drain plug
a2
Lifting lug Without beveled elements 160
Æ
R-with beveled elements on the right 170
45° DN80
20 min.
Æ
330 380
L2 (250)
L-with beveled elements on the left 170 330 380
Æ8
L2 (250) 150
150 520 +5
520 +5
520 +5
View x
View x
View x
-10
-10
-10
NOTE Connection flange: it is possible to use flanges Æ 100. 0,5
+180
45°
22 min.
Æ 170
Figure 1 - FA-type radiators with flange and elements having different lengths
EN 50216-6:2002
-8-
Dimensions in mm Vent plug Lifting lug
a1
Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSI
18
Fixing plate
30
C I1 ± 2
Thickness of an element: 30 max.
max. 50 ± 1,5 Lower value is applicable
Fixing plate 30 Drain plug
a1
Lifting lug Without beveled elements 160
Æ
R-with beveled elements on the right 170
45° DN80
20 min.
330
Æ
L2 (250)
L-with beveled elements on the left 170 380 380
330
Æ8
L2 (250) 150 520 +5 -10 View x
150
520 +5
520 +5
View x
View x
-10
-10
NOTE Connection flange: it is possible to use flanges Æ 100. 0,5
+180
45°
22 min.
Æ 170
Figure 2 - FG-type radiators with flange and elements having the same lengths
-9-
EN 50216-6:2002
Dimensions in mm a1
55
Lifting lug
b2
18 + 0,6
Partial view F
b1 b3
Air vent
Fixing plate
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F
0,5
+160
45°
20 min.
Æ
Connection flange
Step min.
With several elements reduced on right side
With complete elements
Draining Stiffening
a2 40
With several elements reduced on left side
With several elements reduced on right and left sides
min. 63,5
min. 63,5
min. 63,5
min. 63,5
Æ 80
L±2
150 150 max .530
Distance between centers L +- 2 a1 - a2 b1 b2 . b3
max. 530
max. 530
max. 530
600 to 800 = length from 100 to 100 > 800 = length from 50 to 50 90 to 200 = Step 10 in 10 According to number of elements (4 to 32)
NOTE Connection flange: it is possible to use flanges
Æ 100. 0,5
+180
45°
According to b1
22 min.
Æ 170
Figure 3 – FTR-type radiators
EN 50216-6:2002
- 10 -
Dimensions in mm b1 + 140 b1 b5 Lifting lug 40 Step min.
70 b4
Partial view F
b2
Fixing plate
Air vent
70 b6 b3
Air vent
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F 0,5
+160
45°
20 min.
Æ Flange 100
Connection flange
Draining
Draining Stiffening
Æ 18
+ 110 - 0,5 140
With complete elements
With several elements reduced on right side
min. 100
With several elements reduced on left side
min. 63,5
min. 63,5
With several elements reduced on right and left sides min. 63,5
min. 63,5
16
L ±2
max. 353,5
max. 263,5
max. 617
Distance between centers L +- 2 a1 b1
max. 353,5
max. 263,5
max. 617
max. 353,5
max. 263,5
max. 617
600 to 800 = length from 100 ± 10 to 100 ± 10 > 800 = length from 50 ± 10 to 50 ± 10 Minimum 9 = Step 10 in 10 Maximum 2 360 = Minimum Step 40
b2 . b3
According to number of elements
b4 . b5 . b6
According to mounting on material
Figure 4 - FTTO-type radiators
max. 353,5
max. 263,5
max. 617
- 11 -
EN 50216-6:2002
Table 1 – Characteristics and dimensions of the radiators whose width is 520 mm Distance between centres I1
800 to 3 500 having different length from 100 to 100
Number of elements
4 to 32
Length of tubes a1 and a2
60 to 200 having different length from 10 to 10
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a
Number off stiffenings one each side
dimension I1 number (minimum) (dimension I2)
b
800 - 1 500
1 600 - 2 500
2 600 - 3 500
2 (0 - 1)
3 (1 - 2)
4 (2 - 3)
(I1/2)
(I1/3)
b
(I1/4)
a
The number and position of stiffenings can be modified for possible applications of the electric fans.
b
The minimum number of stiffenings on each side can be, as an alternative, the one indicated in brackets. In this case, refer to the dimension (I2) indicated for the distances among the stiffenings.
EN 50216-6:2002
- 12 -
7
Dimensions in mm Vent plug Lifting lug
Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSI
a1
P
Fixing plate
30
Without beveled elements L2 (250)
160
45° DN 80
Æ 20 min. Æ 8
I1 ± 2 C
150
L2 (250)
a2
+5 520 - 10
Fixing plate 30 Drain plug
150
View x
Lifting lug max. 50 ± 1,5 Lower value is applicable
NOTE See Table 1 for the dimensions that are not indicated in the figure, the number of elements and the number of stiffenings.
NOTE Connection flange: it is possible to use flanges Æ 100. +-0,5 180
45°
22 min.
Æ 170
Figure 5 - FR-type radiators with flange and upper connection depressed
- 13 -
EN 50216-6:2002
Dimensions in mm 70 b4
Partial view F Fixing plate
b2 Air vent
b1 + 140 b1 b5 Lifting lug 40 Step min.
70 b6 b3
Air vent
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F
0,5
+160
45°
20 min.
Flange
Æ
150
Connection flange
Draining
With several elements reduced on right side
With complete elements a1
Draining Stiffening
150 Flange
With several elements reduced on left side
min. 63,5
min. 63,5
18 + 0,6
With several elements reduced on right and left sides min. 63,5
min. 63,5
L±2
max. 353,5
max. 263,5
max. 617
Distance between centers L + -2 a1 b1
max. 353,5
max. 263,5
max. 617
max. 353,5
Minimum 90 = Step 10 in 10 Maximum 2 360 = Minimum Step 40 According to number of elements
b4 . b5 . b6
According to mounting on material
NOTE Connection flange: it possible to use flanges Æ 100. 0,5
+180
45°
22 min.
Æ 170
Figure 6 - FTT-type radiators
max. 263,5
max. 617
max. 617
600 to 800 = length from 100 ± 10 to 100 ± 10 > 800 = length from 50 ± 10 to 50 ± 10
b2 . b3
max. 353,5
max. 263,5
is
EN 50216-6:2002
- 14 -
Dimensions in mm Dimensions: Centre distance: No of elements: Dim. a: Back-sheet:
Æ 8
R = Radiator without flanges 40
Æ8
200
Bracing iron from 8 elements on
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F = Radiator with flanges
Model l = 600 – 1 600 n = 2 - 14 60 - 125 material thickness 1,5
200
a 18
Back-sheet material thickness: 1,5 mm DN80
150 / /
/ /
/
Figure 7 - FG1A-type radiators (integral header positioned centrally)
- 15 -
EN 50216-6:2002
Dimensions in mm Dimensions: Centre distance: No elements: l l of600 1 600 Dim. a: Back-sheet :
Æ 8
R = Radiator without flanges 131
40
200
Æ8
Bracing iron from 8 elements on
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F = Radiator with flanges
Model I = 600 to 1 600 n = 2 - 14 60 - 125 material thickness 1,5
200
18
a
M10
150 10
22
40
160 Back-sheet material thickness: 1,5 DN80 10
Execution right
Execution left
Figure 8 - FG1A-type radiators (integral header offset horizontally 131 mm)
BS EN 50216-6:2002
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