1.3 Type/ designation 1-Phase Oil immersed type, Indoor (underground)
1.4 Applicable standard IEC 60076
1.5 Altitude of installation m <1000 m above masl
1.6 Primary connection arrangement LV-Delta, HV-Star (for 3- phase bank)
2 RATED DATA
2.1 Number of units 1
2.2 No. of Phases 1 (Single Phase)
2.3 Connections YNd11 (for 3 Phase Bank)
2.4 Frequency HZ 50
2.5 Transformer Rated continuous power. MVA 20
2.6 LV winding rated voltage kV 10.5
2.7 HV winding rated voltage kV
2.8 Type of cooling OFWF
2.9 Type of transformers (Shell/core) Core type
2.10 Impedance (Base 20MVA) at % 8.73 8.86 8.93
2.11 Minimum creepage distance in air Mm/kV 31
2.12 Temperature rise 0 c 0 c Winding temperature-500C Top oil temperature-400C
2.13 Rated Current LV side A 3299
2.14 Rated Current HV side at 240kV 230kV 220kV A 144.3 150.6 157.5
2.15 TAP CHANGING GEAR Make MR Germany Applicable standard IEC 60214 Off Circuit Tap Changer
Tap Changer Position 1. Connect 2-3: 240kV 2. Connect 2-4: 230kV 3. Connect 1-4: 220kV
Technical parameters:
Ordering notes:
Please indicate the following items:
1. Application: Type of furnace, annual average temperature, Max. Environmental temperature, elevation and
so on.
2. Rated capacity
3. Phase number
4. Frequency
5. Rated voltage
6. Tapping range and voltage regulating method
7. Impedance voltage
8. Vector group
9. Losses and performance
10. Noise level
11. Leading requirement
12. Special requirement
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