KYN28-24 type MV Switchgear
Standard Specification++++General:
ZS1 indoor metal-clad withdrawable switchgear(hereafter short as swithgear) is a complete power distribution device for 3.6~24KV, 3 phase AC 50Hz, single bussectionalized system. It ismainlu used for power transmission of middle/small generators in power plants, power receiving, transmission for substations in power distribution and power system of factories, mines and enterprises, and starting of large high-voltage motor,etc, so as to control, protect and monitor the system. The switchgear meets IEC298, GB3906-91. In addition to be used with domestic VS1 vacuum circuit breaker, it can be used with VD4 from ABB, 3AH5 from Siemens domestic ZN65A, and VB2 from GE, etc. It is truly a power distribution deviece with good performance.
In order to meet the requirement for wall mounting and front-end maintenance, the switchgear is equipped with a special current transformer, so that the operator can maintain and inspect it in front of the cubicle.
++++Sevice environment
a. Ambient temperature: Maximum temperature:+40℃ Minimum temperature: -15℃
b. Ambient humidity: Daily average RH no more than 95%;Monthly average RH no more than 90%
c. Altitude no higher than 2500m;
d. The air around without any pollution of duty,smoke,ercode or flammable air,steam or salty fog;
++++Main technical specifications:
|
No. |
Item |
Unit |
Parameters |
|
|
1 |
Rated Voltage |
KV |
12 |
|
|
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 |
Dry 1min power frequency withstand voltage Wet |
KV |
38 |
50/60 |
|
|
48 |
60/65 |
||
|
7 |
Lightening impulse withstand voltage |
kV |
75 |
95/125 |
|
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 |
|