Zhuhai Comking Electric Co.,Ltd.
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1. Description
KYN28A-12 is the switchgear apply in the single busbar power system and single busbar sectionalized power system with three-phase AC 50Hz,7.2~12kV.It can be used for receiving & distributing electric power of the transmission and distribution control.
2. Working Condition
Indoor ambient temperature:
Max. temperature: +40℃
Daily average temperature: +35℃
Min. temperature: -15℃
Indoor ambient humidity:
Daily average relative humidity: ≤95%
Monthly average relative humidity: ≤90%
Altitude for place of installation : ≤1000m
Earthquake intensity: ≤magnitude 8
Applicable in the places without fire, explosive risk, serious polluted and chemical corrosive.
(Exceeding above working condition is available as customized product)
|
Rated voltage |
kV |
12 |
|
|
Rated insulated level |
1min Power frequency withstand voltage (available value) |
kV |
42 |
|
Lighting impulse withstand voltage(peak value) |
kV |
75 |
|
|
Rated frequency |
Hz |
50 |
|
|
Rated current of main busbar |
A |
630,1250,1600,2000,2500,3150,4000﹡ |
|
|
Rated current of branch busbar |
A |
630,1250,1600,2000,2500,3150,4000 |
|
|
4s Thermal stability current (available value) |
kA |
16,20,25,31.5,40﹡﹡ |
|
|
Rated dynamic stability current(peak value) ﹡﹡﹡ |
kA |
40,50,63,80,100 |
|
Remark:
﹡----it needs to be equipped with ventilation device.
﹡﹡----At the rate of 40kA is 3 seconds.
﹡﹡﹡----The short-circuit capacity of instrument transformer needs to be considered separately.
4. Standard
----IEC62271-200:2003
----GB3906-2006
----GB/T11022-1999
----DL/T 404-2007