KYN28A-12 Metal Armored Withdrawable Switchgear

KYN28A-12 Metal Armored Withdrawable Switchgear

Introduction:

 

KYN28A-12 withdrawable type metal clad switchgear can be applied on 3~12 kV, AC 50 Hz single bus or sectionalized single bus power system. Major be used in substation of power generation stations, industry enterprises, factories with large scale motor for feeding in & distributing electric power. KYN28A-12 can fulfill the requirements of DL/T409-91, IEC60298, GB3906. For safe operation, interlock functions such as for preventing push/pull CB trolley on-line, false close/open CB, close CB while ES on close position, invade energized gas compartment, close ES on energized condition can be equipped.

 

Normal Operation Condition:

 
  1. Ambient temperatute:-10 ℃~+40 ℃.
  2. Altitude under sea level 1000 m.
  3. Relative humidity below 90 % (monthly average value and base on 25 ℃).
  4. Not surrounded by corrosion or flammable gas, vapor.
  5. Not frequently happen to severe vibration.

Main technical data:

 
Item
Unit
Specification
Rated Voltage
kV
3/6/10

Rated Insulation Level
1minPower Frequency Withstand Voltage
kV
42/48
Lightning Impulse Withstand Voltage
kV
                                       75/85
Rated Frequency
Hz
50
Rated Busbar Current
A
630, 1250, 1600, 2000, 2500, 3150
Rated Feeder Current
A
630, 1250, 1600, 2000, 2500, 3150
4sRated Short Time Current(4s)
KA
16, 20, 25, 31, 5, 40, 50
Rated Peak Withstand Current
KA
40, 50, 63, 80, 100, 125
Protection Degree
Enclosure: IP4X, Gas Compartment and when circuit breaker room door is open: IP2X

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