|
Item |
Description |
Standard parameters |
|
1 |
Rated capacity |
|
|
2 |
Phase number |
|
|
3 |
Rated voltage
HV
LV |
11 kV
0.415 kV |
|
4 |
Cooling way |
ONAN |
|
5 |
Frequency |
50 Hz |
|
6 |
connection of transformer winding |
Dyn11 |
|
7 |
Surge way / Tapping range |
No-load / ±2x2.5% |
|
8 |
System highest voltage |
12kV |
|
9 |
Lightning shock voltage |
75 / - kV |
|
10 |
Power frequency withstand voltage |
35 / 5 kV |
|
11 |
Insulation class |
A |
|
12 |
Coil materials |
copper |
|
13 |
Highest temperature |
+40ºC |
|
14 |
Highest monthly average temperature |
+30ºC |
|
15 |
Highest years average temperature |
+20ºC |
|
16 |
Minimum temperature |
-25ºC |
|
17 |
Absolutely altitude height |
less than or equal 1000 M |
|
18 |
Insulation oil |
25# Mineral oil |
|
19 |
Temperature rise limit
Coil
Oil on top of the (The full sealed products) |
65 K
60 K |
|
20 |
No-load loss NL |
3300W, deviation less than or equal +15% |
|
21 |
Load loss LL |
28500W, deviation less than or equal +15% |
|
22 |
Short circuit impedance (Principal tapping) |
5.5% (deviation ±10% ) |
