lvqb-110
lvqb-220
lvqb-330
lvqb-500
main features of the product:
1. the t-shaped structure is adopted, with strong current capacity, dynamic resistance and strong thermal stability;
2. the main insulation is a coaxial cylindrical electric field structure with uniform distribution and has reliable and stable insulation performance;
3. the number of secondary windings can be adjusted according to the needs of users.
main technical parameters:
|
parameter name |
unit |
parameter name | |||||||||
|
equipment model |
|
lvqb-110 |
lvqb-220 |
lvqbt-330 |
lvqbt-500 | ||||||
|
rated voltage |
kv |
110 |
220 |
330 |
500 | ||||||
|
maximum equipment voltage |
kv |
126 |
252 |
363 |
550 | ||||||
|
rated short-duration power-frequency withstand voltage (r.m.s 1 min) |
kv |
230 |
395 |
510 |
740 | ||||||
|
rated lightning impulse withstand voltage (peak value) (full wave 1.2 / 50µs) |
kv |
550 |
1050 |
1175 |
1550 | ||||||
|
rated lightning impulse withstand voltage (peak value) (chopped wave 2 ～ 5µs) |
kv |
633 |
1208 |
1351 |
1675 | ||||||
|
rated switching impulse withstand voltage (peak value) |
kv |
|
|
950 |
1175 | ||||||
|
rated short-time thermocurrent (effective value) (3s) |
ka |
50 |
50 |
50 |
63 | ||||||
|
rated dynamic stable current (effective value) |
ka |
125 |
125 |
125 |
160 | ||||||
|
amount of partial discharge |
um |
pc |
10 | ||||||||
|
1.2um/√3 |
5 | ||||||||||
|
rated pressure of sf6 gas (20°c) |
mpa |
0.4 |
0.5 | ||||||||
|
superfeed pressure of sf6 gas (20°c) |
mpa |
0.35 |
0.45 | ||||||||
|
creepage distance |
mm/kv |
25 or 31 | |||||||||
|
sf6 annual leakage rate of gas |
|
0.3％ | |||||||||
|
rated primary current |
a |
2000 |
2500 |
4000 |
5000 | ||||||
|
rated secondary current |
a |
1, 5 | |||||||||
|
measurement level |
accuracy level |
|
0 2s, 0.2, 0.5s, 0.5 | ||||||||
|
instrument security factor |
|
fs5, fsl0 | |||||||||
|
protection level |
accuracy level |
|
5p, 10p |
5p, 10p, tpy | |||||||
|
accuracy limit factor |
|
15, 20, 25, 30 | |||||||||
|
rated load |
measurement level |
|
5, 10, 15, 20, 25, 30 | ||||||||
|
protection level |
| ||||||||||
|
weight |
㎏ |
500 |
1400 |
1650 |
3000 | ||||||