KYN61-40.5 Medium Switchgear
KYN61-40.5( same as unigear Z3.2) air-insulated metal-clad withdrawable switchgear( hereinafter as "switchgear") is a kind of MV switchgear.
It is designed as withdrawable module type panel, and the withdrawable part is fitted with VD4-36E, VD4-40.5 withdrawable vacuum circuit breaker manufactured by Cooper Nature company. It can also be fitted with isolation truck, PT truck, fuses truck and so on. It is applicable to three phase AC 50/60 Hz power system, and mainly used for the transmission and distribution of electrical power and control, protection, monitoring of the circuit.
Main technical specifications
| No. |
Item |
Unit |
Parameters |
| 1 |
Rated Voltage |
KV |
36 |
40.5 |
| 2 |
Rated Frequency |
Hz |
50/60 |
| 3 |
Rated Current |
A |
630 1250 1600 2000 2500 3150 |
| 4 |
Branch busbar rated current |
A |
630 1250 1600 2000 2500 3150 |
| 5 |
Main busbar rated current |
A |
630 1250 1600 2000 2500 3150 |
| 6 |
1min power frequency withstand voltage |
KV |
70 |
95 |
| 7 |
Lightening impulse withstand voltage |
kV |
170 |
185 |
| 8 |
Rated Short-time Withstand Current (4s) |
kA |
20/25/31.5/40 |
| 9 |
Rated Short Circuit Breaking Current(Peak) |
kA |
40/50/63/80/100 |
| 10 |
Protection type |
|
IP4X for housing |
| 11 |
Rated voltage for control Circuit |
V |
DC110, DC220, AC220 |
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