off circuit tap changers for · pdf fileoff circuit tap changers for threephase distribution...

KDR 1 / A

OFF CIRCUIT TAP CHANGERS FOR THREEPHASE DISTRIBUTION TRANSFORMERS

( TYPE KDR )

GENERAL SPECIFICATION

These tap changers are available in one, two or three phase applications. Multi layer types are also available.

The shaft length is fixed as 50, 70,100 or 130 mm.

Driving mechanism can be either on the edge or in the middle of the phases.

Connection diagrams in page KDR 2 can be applied in any variation to all types.

Easy assembly and compact design provides labor and cost savings.

ASSEMBLY

A notch is provided to mark each position. For operation, unscrew and release the notch by applying an axial pull on the control knob. Then turn the knob to the desired position. Engage the knob and screw the lock nut. This process is clearly marked on control knob as;

“ I LIFT – II TURN – III SWITCH ON “

This description can be engraved in any language.

MATERIALS

Steel Parts : These parts can be stainless or mild steel. Mild steel parts are cadmium or zinc plated. Upon request galvanizing is also available.

Polyamide Parts : These parts are NYLON 66, superior mechanical properties against all acting forces, strong against UV lights.

Aluminum Parts : GAlSi12Cu

Brass Parts : CuZN40Pb2 Ms 60 F34 DIN 17673

Copper Parts : E-Cu F25 DIN 40500

Insulator Parts : Paper phenol-plastic resin based laminates, HP 2061.5 class of DIN 7735.

ON REQUEST

The aluminum parts can be protected by anodic oxidation.

The mild steel parts can be supplied in stainless steel.

The brass and copper parts can be tin, silver or cadmium plated.

CURRENT

CURRENT CONTACT INNER DIA. (For cable connection)

10 A φ 2,1 mm.

30 A φ 3,1 mm.

63 A φ 5,1 mm.

VOLTAGE CLASS

VOLTAGE CLASS B.I.L.

15 kV 95 kV

20 kV 125 kV

30 kV 170 kV

Other B.I.L. values are also available upon customer request.

KDR 2 /0

TYPE KDR THREEPHASE TAP CHANGER

Usual diagrams

KDR 3 / B

TYPE KDR THREEPHASE TAP CHANGER Off-circuit operation can be used in oil

Delta diagram 20-30 kV 30-63 A 3-7 positions Setting 2.5 % per position

20kV 30kV L

Number of

Positions A 10A Unit No.

30A Unit No.

63A Unit No. A 10A

Unit No. 30A

Unit No. 63A

Unit No. 3 347 D209331 D209351 D209371 422 D209531 D209551 D209571 4 401 D209332 D209352 D209372 476 D209532 D209552 D209572 5 455 D209333 D209353 D209373 530 D209533 D209553 D209573 6 509 D209334 D209354 D209374 584 D209534 D209554 D209574

70

7 563 D209335 D209355 D209375 638 D209535 D209555 D209575

3 347 E209331 E209351 E209371 422 E209531 E209551 E209571 4 401 E209332 E209352 E209372 476 E209532 E209552 E209572 5 455 E209333 E209353 E209373 530 E209533 E209553 E209573 6 509 E209334 E209354 E209374 584 E209534 E209554 E209574

100

7 563 E209335 E209355 E209375 638 E209535 E209555 E209575 3 347 F209331 F209351 F209371 422 F209531 F209551 F209571 4 401 F209332 F209352 F209372 476 F209532 F209552 F209572 5 455 F209333 F209353 F209373 530 F209533 F209553 F209573 6 509 F209334 F209354 F209374 584 F209534 F209554 F209574

130

7 563 F209335 F209355 F209375 638 F209535 F209555 F209575

20kV 30kV C 55 80 E 55 80 I 55 80

10A 30A 63A J 2.1 3.1 5.1 K 4 5 7

20kV L

Number of


30A Unit No.

63A Unit No.

3 347 C209331 C209351 C209371 4 401 C209332 C209352 C209372 5 455 C209333 C209353 C209373 6 509 C209334 C209354 C209374

50

7 563 C209335 C209355 C209375

18 18 18 18 18 18 18 18 18

KDR 4 /0


Delta diagram 30 kV 30-63 A 3-7 positions (*) Setting 2.5 % per position

(*) Special type with 21mm distance between contacts for 30 kV.

30A 63A L

Number of

Positions A

Unit No. Unit No.

3 449 1E209551 1E209571 4 512 1E209552 1E209572 5 575 1E209553 1E209573 6 638 1E209554 1E209574

100

7 701 1E209555 1E209575

3 449 1F209551 1F209571 4 512 1F209552 1F209572 5 575 1F209553 1F209573 6 638 1F209554 1F209574

130

7 701 1F209555 1F209575

30A 63A

J 3.1 5.1

K 5 7

KDR 5 / A

TYPE KDR THREEPHASE TAP CHANGER Off-circuit operation can be used in oil or askarel

Star diagram 20-30 kV 10-30 A 3-5-7 positions. Setting 2.5 % per position

10A 30A

J 2.1 3.1

K 4 5

20kV 30kV Unit No. Unit No. Unit No. Unit No. L

Number of

Positions A 10A 30A

A 10A 30A

3 347 D219361R D219361P 455 D219561R D219561P 5 456 D219363R D219363P 563 D219563R D219563P 70 7 564 D219365R D219365P 671 D219565R D219565P

3 347 E219361R E219361P 455 E219561R E219561P 5 456 E219363R E219363P 563 E219563R E219563P 100 7 564 E219365R E219365P 671 E219565R E219565P 3 347 F219361R F219361P 455 F219561R F219561P 5 456 F219363R F219363P 563 F219563R F219563P 130 7 564 F219365R F219365P 671 F219565R F219565P

20kV 30kV

C 55 91 E 55 91 I 55 91

KDR 6 /0


Series parallel coupling 15-20 kV 30-63 A Setting 2.5 % per position

30A 63A L Number

of Positions Unit No. Unit No.

50 2 C229850 C229870 70 2 D229850 D229870

100 2 E229850 E229870 130 2 F229850 F229870

30A 63A

J 3.1 5.1

K 5 7

KDR 7 /0


Star-delta coupling 15-20 kV 30-63 A Setting 2.5 % per position

30A 63A L

Number of

Positions Unit No. Unit No.

50 2 C249850 C249870

70 2 D249850 D249870

100 2 E249850 E249870

130 2 F249850 F249870

30A 63A J 3.1 5.1 K 5 7

KDR 8 / A


Common output per phase 20 kV 10-63 A 3-5-7 positions. Setting 2.5 % per position

10A 30A 63A L

Number of

Positions A

Unit No. Unit No. Unit No.

3 392 C239331 C239351 C239371 5 500 C239333 C239353 C239373 50

7 608 C239335 C239355 C239375

3 392 D239331 D239351 D239371 5 500 D239333 D239353 D239373 70 7 608 D239335 D239355 D239375

3 392 E239331 E239351 E239371 5 500 E239333 E239353 E239373 100 7 608 E239335 E239355 E239375

3 392 F239331 F239351 F239371 5 500 F239333 F239353 F239373 130 7 608 F239335 F239355 F239375

10A 30A 63A

J 2.1 3.1 5.1

K 4 5 7

KDR 9 / A



10A 30A 63A L

Number of

Positions A


3 484 1E239331 1E239351 1E239371 5 610 1E239333 1E239353 1E239373 100

7 736 1E239335 1E239355 1E239375

3 484 1F239331 1F239351 1F239371 5 610 1F239333 1F239353 1F239373 130 7 736 1F239335 1F239355 1F239375

10A 30A 63A

J 2.1 3.1 5.1

K 4 5 7

KDR 10 / A



10A 30A 63A L

Number of

Positions A


3 495 C269331 C269351 C269371 5 603 C269333 C269353 C269373 50

7 711 C269335 C269355 C269375

3 495 D269331 D269351 D269371 5 603 D269333 D269353 D269373 70 7 711 D269335 D269355 D269375

3 495 E269331 E269351 E269371 5 603 E269333 E269353 E269373 100 7 711 E269335 E269355 E269375

3 495 F269331 F269351 F269371 5 603 F269333 F269353 F269373 130 7 711 F269335 F269355 F269375

10A 30A 63A

J 2.1 3.1 5.1

K 4 5 7

KDR 11 / A


Two Stages- Delta diagram 20-30 kV 30-63 A 3-7 positions Setting 2.5 % per position

20kV 30kV L

Number of


30A Unit No.

63A Unit No. A 10A

Unit No. 30A

Unit No. 63A

Unit No. 3 358 D2X209331 D2X209351 D2X209371 433 D2X209531 D2X209551 D2X209571

4 412 D2X209332 D2X209352 D2X209372 487 D2X209532 D2X209552 D2X209572

5 466 D2X209333 D2X209353 D2X209373 541 D2X209533 D2X209553 D2X209573

6 520 D2X209334 D2X209354 D2X209374 595 D2X209534 D2X209554 D2X209574

70

7 574 D2X209335 D2X209355 D2X209375 649 D2X209535 D2X209555 D2X209575

3 358 E2X209331 E2X209351 E2X209371 433 E2X209531 E2X209551 E2X209571

4 412 E2X209332 E2X209352 E2X209372 487 E2X209532 E2X209552 E2X209572

5 466 E2X209333 E2X209353 E2X209373 541 E2X209533 E2X209553 E2X209573

6 520 E2X209334 E2X209354 E2X209374 595 E2X209534 E2X209554 E2X209574

100

7 574 E2X209335 E2X209355 E2X209375 649 E2X209535 E2X209555 E2X209575

3 358 F2X209331 F2X209351 F2X209371 433 F2X209531 F2X209551 F2X209571

4 412 F2X209332 F2X209352 F2X209372 487 F2X209532 F2X209552 F2X209572

5 466 F2X209333 F2X209353 F2X209373 541 F2X209533 F2X209553 F2X209573

6 520 F2X209334 F2X209354 F2X209374 595 F2X209534 F2X209554 F2X209574

130

7 574 F2X209335 F2X209355 F2X209375 649 F2X209535 F2X209555 F2X209575

20kV 30kV C 55 80 E 55 80 I 55 80

10A 30A 63A J 2.1 3.1 5.1 K 4 5 7

20kV L

Number of


30A Unit No.

63A Unit No.

3 358 C2X209331 C2X209351 C2X209371

4 412 C2X209332 C2X209352 C2X209372

5 466 C2X209333 C2X209353 C2X209373

6 520 C2X209334 C2X209354 C2X209374

50

7 574 C2X209335 C2X209355 C2X209375

KDR 12 /0


Off-circuit operation can be used in oil or askarel Multi-stage tap changers. Setting 2.5 % per position

-

Five –stage tap changer

1 stage, series-parallel coupling – 10-20 kV - 30 to 63 A 2 stages, star-delta coupling – 15-20 kV – 30 to 63 A

2 stages, delta diagram – 20kV – 30 to 63 A 3-5-7 positions – setting 2.5 % per position

KDR 13 /0


1. Stage series parallel coupling 15-20 kV 30-63 A 2. Stage delta diagram 20 kV 30-63 A 3-5-7 positions. Setting 2.5 % per position

2.

30A 63A L

Number of

Positions M

Unit No. Unit No.

3 C200050 C200070

5 C200051 C200071 50

7

182

C200052 C200072

3 D200050 D200070

5 D200051 D200071 70

7

202

D200052 D200072

3 E200050 E200070

5 E200051 E200071 100

7

232

E200052 E200072

3 F200050 F200070

5 F200051 F200071 130

7

262

F200052 F200072

30A 63A J 3.1 5.1 K 5 7

Number of

Positions C D E

3 73 75 76 5 55 57 58 7 37 39 40

KDR 14 /0


1. Stage series-parallel coupling 15-20 kV 30-63 A 2. Stage delta diagram 20 kV 30-63 A 3-5-7 positions. Setting 2.5 % per position

30A 63A L

Number of

Positions M

Unit No. Unit No.

3 C280851 C280871 5 C280853 C280873 50

7 132

C280855 C280875

3 D280851 D280871 5 D280853 D280873 70 7

152

D280855 D280875

3 E280851 E280871 5 E280853 E280873 100 7

182

E280855 E280875

3 F280851 F280871 5 F280853 F280873 130 7

212

F280855 F280875

30A 63A J 3.1 5.1 K 5 7

Number of

Positions C D E

3 73 75 76 5 55 57 58 7 37 39 40

KDR 15 /A


Control devices

Lid Assembly

The notched end of the shaft (11) is to be fitted into the slot inside the

lid. Press the lid onto the shaft, turn it 90° and release. The lid will be locked automatically. To dismantle the lid, apply the assembly operation in reverse order.

Assembly according to the order given below as numbers Assembly Order:

1- O-ring 18.54x3.53 2- O-ring Sleeve 3- O-ring 9.13x2.62 4- Spacer Washers 5- Washer 13.9x10.2x3.5 6- Position Stopper 7- Fixing Nut 8- Control Device Body (Nylon-6) 9- Spring 10- Control Device Lid 11- Shaft

Notes: For the assembly of the tap changer, the thickness of the transformer cover sheet is assumed to be 10 mm. If the sheet thickness is lower than 10 mm then use the additional spacer washers (4) so that the resulting thickness is to be 10 mm. For example, if the cover sheet thickness is 6 mm then 4 washers are to be used, for the 10mm thick cover sheet no washer is needed.

Position Changing Mode

In order to change the position of the tap changer, pull the control device body (8) along the direction of the arrow, turn it to the desired position notch and release. The spring system will automatically lock the

position via position stopper and position notch on the body. Normal Rest Mode

KDR 16 /C


Control devices

KDR 17 /0


Numbering of the positions

KNOB NUMBERING

WHEN ORDERING PLEASE QUOTE: 1- The tap changer unit no. 2- The voltage class current and type of setting or coupling. 3- Control device no. 4- The language on the control device. 5- Number of positions. 6- The indication of the repeater disc (A1, B1) 7- Dimensions of the fixed contacts (j and k) 8- L, e, x, w dimensions from the tables. For special setups not shown in the catalogue please consult us.

off circuit tap changers for · pdf fileoff circuit tap changers for threephase distribution...

Documents