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)
4. Technical Data
|
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
Product Tags:
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Indoor Protection Metering Metal Clad Switchgear KYN28A Withdrawable Images
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