Zhuhai Comking Electric Co.,Ltd.
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1. Description
11kV Metal clad indoor protection & metering switchgear can apply in three-phase AC 50Hz/7.2-17.5kV single busbar and single busbar sectionalized electric power system. Its withdrawable part can equip with components including vacuum circuit breaker and vacuum contactor etc
2. Technical Feature
---- Metal armoured and high protection class
---- Watch window
---- Pressure release channel
---- Reliable and safe
---- Flexible configureation
---- Interchange of withdrawable circuit breaker
---- It can fit for different type of protection relays
3. 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.
5. Standard
---- IEC62271-200:2003
---- GB3906-2006
---- GB/T11022-1999
---- DL/T 404-2007