Inventory / ABB 20.1/31.5 MVA 66/11 kV

#101 - ABB 20.1/31.5 MVA 66/11 kV

Quantity : 1 pce
Availablity : Available from October 2013
Brand : ABB
Year of Manufacture : 1996
Condition : Second Hand
Application : Generator Step-up Transformers (GSU)
Basic Transformer Concept : oil-immersed, conservator tank
Tank Design : Rigid tank, detachable cooling radiators
Number of Phases : 3-phase
Rated Power : 20100/31500 kVA
Method of Cooling : ONAN/ONAF
Voltage Ratio (prim./sec.) : 66000/11000 V
Current (prim.) : 175,8 A / 275,6 A (ONAN/ONAF)
Current (sec.) : 1055,0 A / 1653,3 A (ONAN/ONAF)
Voltage Regulation : on-load tap changer (OLTC)
Tapping Range : +-8x1,25%, see table below for tapping range
Frequency : 50 Hz
Insulatin Class : Class A
Temperature Rise (oil/wind) : 50/55 K
Connection : YNd1
Total Weight : ~62000 kg
Weight of Oil : ~15000 kg
Further documentation (complete rating plate data etc.) is available and can be sent
upon request!
Table of primary tappings :
1. 59400 / 11000 V
2. 60225 / 11000 V
3. 61050 / 11000 V
4. 61875 / 11000 V
5. 62700 / 11000 V
6. 63525 / 11000 V
7. 64350 / 11000 V
8. 65175 / 11000 V
9. 66000 / 11000 V
10. 66825 / 11000 V
11. 67650 / 11000 V
12. 68475 / 11000 V
13. 69300 / 11000 V
14. 70125 / 11000 V
15. 70950 / 11000 V
16. 71775 / 11000 V
17. 72600 / 11000 V