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On-load tap-changers type UCG

The UC family is a group of diverter switch on-load tap-changers. They come in a wide range of models with a rating suitable for every application. They are mounted inside of the transformer tank, suspended from the transformer cover. The UC types operate with conventional arc quenching in oil diverter switches.

The UCG model is the smallest of the UC types and is suitable for transformers up to 500 MVA with a BIL rating of 1050 kV and current rating of 600 (1500) A.

Product scope

  • Base technology: Conventional, resistance, in-tank
  • Common applications: Network, special, industrial, HVDC

 

  Tap-changer placed in the neutral point of the winding Other placements of the tap-changer
Highest voltage for equipment (Um) 300 kV 300 kV
Max lightning impulse (BIL) 1050 kV 1050 kV
Max current
3-phase
1-phase (one tap-changer/phase)
600 A
1500 A
N.A.
1500 A
Enforced current splitting
1-phase (one tap-changer/phase)
1800 A 1800 A
Max step voltage 3500 V 3500 V

 

Why Hitachi ABB Power Grids?

  • Unique open design for quick and easy maintenance
  • Maintenance in any tap position and without dismantling the shaft system, thus eliminating the risk for failure from improper assembly or alignment
  • No online oil filter is needed
  • Unsurpassed maintenance intervals

Get to know more

Document title ID
Technical guide 1ZSC000562-AAW
Declaration of conformity 1ZSC000498-ABN
Ordering data form (.xlsm)
Please note that this is an interactive form, which can be filled in, saved and sent to us by e-mail.
1ZSC000498-ACC
Ordering data form explanations 1ZSC000498-AAP
User's manual 1ZSE 5492-155
Installation and commissioning guide 1ZSC000562-AAY
Maintenance guide 1ZSE 5492-124
Repair guide 1ZSE 5492-129
Spare parts list 1ZSC000562-ACV
   
Accessories and protection devices 1ZSC000562-AAD
Oil filter unit, type HPS 27/27, 54 1ZSC000562-AAF
Oil filter unit, type OLU 1ZSC000562-AAR

Insulating level (kV) Selector Switching type Connection Max. rated through-current (A) Number of positions Available versions  Drawing number
380
650
750
1050
C L N 300-600 5-18 Short: 300 2)
Long: 300 to 600
5492 0104-1
B11) 5492 0104-5
E, T 300-600 Short: all 2)
Long: all
5492 0104-5
900-1200 Long only 5492 0104-3
900 Short 2) 5492 0104-31
1500 Long 5492 0104-2
B21) 300-600 Short: 300 2)
Long: 300 to 600
5492 0104-6
R N 300-600 8-15 Short: 300 2)
Long: 300 to 600
5492 0104-7
16-35 5492 0104-8
B11) 8-15 5492 0104-15
16-35 5492 0104-16
E, T 300-600 8-15 Short: all 2)
Long: all
5492 0104-15
16-35 5492 0104-16
900-1200 8-15 Long 5492 0104-13
16-35 5492 0104-14
900 8-15 Short 2) 5492 0104-32
16-35 5492 0104-33
1500 8-15 Long 5492 0104-9
16-35 5492 0104-10
B21) 300-600 8-15 Short: 300 2)
Long: 300 to 600
5492 0104-17
16-35 5492 0104-18
D N 300-600 8-15 Short: 300 2)
Long: 300 to 600
5492 0104-19
16-35 5492 0104-20
B11) 8-15 5492 0104-27
16-35 5492 0104-28
E, T 300-600 8-15 Short: all 2)
Long: all
5492 0104-27
16-35 5492 0104-28
900-1200 8-15 Long 5492 0104-23
16-35 5492 0104-24
900 8-15 Short 2) 5492 0104-34
16-35 5492 0104-35
1500 8-15 Long 5492 0104-21
16-35 5492 0104-22
B21) 300-600 8-15 Short: 300 2)
Long: 300 to 600
5492 0104-29
16-35 5492 0104-30
1) B1 (1 phase) and B2 (2 phases) are combined components, forming the "B-group".
2) Step voltage ≤ 1500 V

Insulating level (kV) Selector Switching type Connection Max. rated through-current (A) Number of positions Available versions  Drawing number
380
650
750
1050
III L N 300-600 5-22 Short: 300 2)
Long: 300 to 600
5492 0101-1

5492 0101-2
B11)
E, T 300-900 Short: all 2)
Long: all
900 Short 2) 5492 0101-3
1200 Long 5492 0101-4
1500 5492 0101-5
B21) 300-600 Short: 300 2)
Long: 300 to 600
5492 0101-6
R, D N 300-600 9, 13 Short: 300 2)
Long: 300 to 600
5492 0101-7
11, 15-35 5492 0101-8
B11) 9, 13 5492 0101-9
11, 15-35 5492 0101-10
E, T 300-900 9, 13 Short: all 2)
Long: all
5492 0101-9
11, 15-35 5492 0101-10
900 9, 13 Short 2) 5492 0101-11
11, 15-35 5492 0101-12
1200 9, 13 Long 5492 0101-13
11, 15-35 5492 0101-14
1500 9, 13 5492 0101-15
11, 15-35 5492 0101-16
B21) 300-600 9, 13 Short: 300 2)
Long: 300 to 600
5492 0101-17
11, 15-35 5492 0101-18
1) B1 (1 phase) and B2 (2 phases) are combined components, forming the "B-group".
2) Step voltage: see Technical guide, section "Rated phase step voltage for type UCG".

 

Insulating level (kV) Selector Switching type Connection Max. rated through-current (A) Number of positions Available versions Drawing number 
380
650
750
1050
F L N 300-600 5-18 400 A: long
500 A: long
600 A: long
1ZSC004528-ABC 
B11) 300-600 B1, 400 A: long
500 A: long
600 A: long
1ZSC004528-ABE
E, T 300-1500 1200 A: long
1500 A: long
1ZSC004528-ABE
B21) 300-600 400 A: long
500 A: long
600 A: long
1ZSC004528-ABJ
R, D N 300-600 8-9, 12-13 400 A: long
500 A: long
600 A: long
1ZSC004528-AAU
10-11, 14-35 1ZSC004528-ABY
B11) 300-600 8-9, 12-13 B1, 400 A: long
500 A: long
600 A: long
1ZSC004528-AAW
10-11, 14-35 1ZSC004528-ABZ
E, T 300-1500 8-9, 12-13 1200 A: long
1500 A: long
1ZSC004528-AAW
10-11, 14-35 1ZSC004528-ABZ
B21) 300-600 8-9, 12-13 400 A: long
500 A: long
600 A: long
1ZSC004528-ABA
10-11, 14-35 1ZSC004528-ACA
1) B1 (1 phase) and B2 (2 phases) are combined components, forming the "B-group".

The drawing shows Drawing number
Mounting on active part 5492 0103-1
Accessories placement: Standard top section without oil filter unit 5492 0103-2
Accessories placement: Top section for oil filter unit 5492 0103-3
Accessories placement: Top section with temperature switch 5492 0103-4
Accessories placement: Top section with two valves R1" 5492 0103-5
Accessories placement: Top section with two valves R1" and oil filter unit 5492 0103-7
Drain valve 5492 0083-10
Pressure relief device - flow diameter 130 mm - Qualitrol 5492 0083-15
Pressure relief device - flow diameter 50 mm, standard - Comem 1ZSC003721-AAW
Pressure relief device - flow diameter 50 mm, class C5-M - Comem 1ZSC003721-AAV
Bevel gear (on top section, T-shape) 5492 0083-19
Bevel gear (on top section, L-shape) 1ZSC004021-AAD
Bevel gear (in external drive shaft system) 5492 0083-1
Support for bevel gear (on external drive shaft system) 5492 999-11
Pressure relay 5492 0083-2
Oil flow relay 1ZSC003527-ABB
External drive shaft system 5492 0083-4
Temperature relay 1ZSC003716-AAM
Temperature sensor 1ZSC005333-AAF
Temperature sensor and pressure relay 5492 0083-33
Thermo switch housing 5492 0083-22

Movie title ID
Tap-changers by ABB: Based on traditions - geared for change 1ZSC000717-AAM
Life cycle support: Training centers 1ZSC000717-ABD
Vacuum - a logical progression: Upgrading made as easy as 1 - 2 - 3 1ZSC000717-ABE
It's all about commitment: Life cycle support 1ZSC000717-ACX
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