Data Sheet Ref. : MV TRANSFORMER MV/LV 500 KVA (20/11/0.41) |
|||
Nos | Description | Units | Required |
Manufacturer | |||
A | Electrical Characteristics | ||
1 | Rated Capacity at 20KV | KVA | 500 |
1.1 | Firm capacity at 11KV | KVA | 500 |
2 | Type | Ground mounted | |
3 | Primary rated voltage | KV | 20/11 |
4 | Secondary rated voltage | V | 410 |
5 | Tapping range (on primary windings) | % | |
· 20KV | (+/- 2x2.5) | ||
· 11KV | (+/- 2x3.5) | ||
6 | Principal tapping at | KV | 19/19.5 |
6.1 | · 20KV | 20.5/21 | |
6.2 | · 11KV | ||
7 | Rated Frequency | Hz | 50 |
8 | Vector Group Symbol | Dyn11 | |
9 | Impedance voltage at full rated power | % Un | |
9.1 | · 20KV | 4 | |
9.2 | · 11KV | 4 | |
10 | No-load losses, at rated voltage and frequency | W | |
1100 (max) | |||
11 | Load losses | W | |
11.1 | · 20KV | ||
6100 (max) | |||
11.2 | · 11KV | ||
6100 (max) | |||
12 | No-load current (Io/In) | % | |
13 | Voltage Tests on HT Windings | KV | |
13.1 | -Induced AC withstand voltage test | 40 | |
13.2 | -At 50 HZ (typical) | 50 | |
13.3 | -Lightning impulse tests on HV windings | 125 | |
14 | Voltage Tests on LV Windings | KV | |
14.1 | -At 50 HZ (typical) | 3 | |
14.2 | -Lightning impulse tests on HV windings | ||
15 | Dielectric strength with low oil | % | 75 |
16 | Temperature rise (average) | °K | |
16.1 | -oil | 55 | |
16.2 | -winding | 60 | |
B | Other Characteristics | ||
1 | Noise Level (average) | dB | <66 |
2 | MV Bushings | IEC 137 | |
2.1 | Type | porcelain | |
2.2 | Rated Current | A | 250 |
2.3 | Minimum creepage distance | mm | 225 |
3 | LV Bushings | ||
3.1 | Type | Cu Busbar | |
3.2 | Rated Current | A | 1250 |
3.3 | Minimum creepage distance | mm | >142 |
4 | Insulating Oil | Mineral Oil | |
NYNAS or equivalent | |||
Free from PCB | |||
5 | Winding conductor material (all windings) | Cu or Al | |
6 | Completely filled Degree of Hermeticity | yes | |
total | yes | ||
7 | total Weight | Kg | |
8 | Weight of insulation oil | Kg | |
9 | Overall dimensions | cm | |
9.1 | height | <160 | |
9.2 | Length | <93 | |
9.3 | width | <150 | |
10 | Tap Changer at MV side | yes | |
11 | DGPT2 | yes | |
12 | Identification of terminals | yes | |
13 | Filling and Emptying Hole | yes | |
14 | Earthing | yes | |
15 | Wheels | yes | |
16 | Corrosion protection | yes | |
17 | Name plate | French / English | |
Data Sheet Ref. : MV TRANSFORMER MV/LV | |||
500KVA (20/15/0.41) | |||
Nos | Description | Units | Required |
Manufacturer | |||
A | Electrical Characteristics | ||
1 | Rated Capacity at 20KV | KVA | 500 |
1.1 | Firm capacity at 15KV | KVA | 500 |
2 | Type | Ground Mounted | |
3 | Primary rated voltage | KV | 20/15 |
4 | Secondary rated voltage | V | 410 |
5 | Tapping range (on primary windings) | % | |
· 20KV | (+/- 2x2.5) | ||
· 15KV | (+/- 2x3.5) | ||
6 | Principal tapping at | KV | |
6.1 | · 20KV | 19/19.5/20.5/21 | |
6.2 | · 15KV | 14/14.5/15.5/16 | |
7 | Rated Frequency | Hz | 50 |
8 | Vector Group Symbol | Dyn11 | |
9 | Impedance voltage at full rated power | % Un | |
9.1 | · 20KV | 4 | |
9.2 | · 15KV | 4 | |
10 | No-load losses, at rated voltage and frequency | W | |
1100 (max) | |||
11 | Load losses | W | |
11.1 | · 20KV | ||
6100 (max) | |||
11.2 | · 15KV | ||
6100 (max) | |||
12 | No-load current (Io/In) | % | |
13 | Voltage Tests on HT Windings | KV | |
13.1 | -Induced AC withstand voltage test | 40 | |
13.2 | -At 50 HZ (typical) | 50 | |
13.3 | -Lightning impulse tests on HV windings | 125 | |
14 | Voltage Tests on LV Windings | KV | |
14.1 | -At 50 HZ (typical) | 3 | |
14.2 | -Lightning impulse tests on HV windings | ||
15 | Dielectric strength with low oil | % | 75 |
16 | Temperature rise (average) | °K | |
16.1 | -oil | 55 | |
16.2 | -winding | 60 | |
B | Other Characteristics | ||
1 | Noise Level (average) | dB | <66 |
2 | MV Bushings | IEC 137 | |
2.1 | Type | porcelain | |
2.2 | Rated Current | A | 250 |
2.3 | Minimum creepage distance | mm | 225 |
3 | LV Bushings | ||
3.1 | Type | Cu Busbar | |
3.2 | Rated Current | A | 1250 |
3.3 | Minimum creepage distance | mm | >142 |
4 | Insulating Oil | Mineral Oil | |
NYNAS or equivalent | |||
Free from PCB | |||
5 | Winding conductor material (all windings) | Cu or Al | |
6 | Completely filled Degree of Hermeticity | yes | |
7 | total Weight | Kg | |
8 | Weight of insulation oil | Kg | |
9 | Overall dimensions | cm | |
9.1 | height | <160 | |
9.2 | Length | <93 | |
9.3 | width | <150 | |
10 | Tap Changer at MV side | yes | |
11 | DGPT2 | yes | |
12 | Identification of terminals | yes | |
13 | Filling and Emptying Hole | yes | |
14 | Earthing | yes | |
15 | Wheels | yes | |
16 | Corrosion protection | yes | |
17 | Name plate | French / English |
The relevant information: