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12kv Switchgear
Aug 26, 2017

Basic Info

Product Description

  • Model NO.: KYN28-12

  • HS Code: 85352100


KYN28-12 Indoor HV Vacuum Switchgear


Main charateristics
The enclosure is made of aluminum-zinc coated sheet processed by bending several times.
All operations should be done under the door closed.
The hihg protection degree can avoid ingression of substance or insects enter.
Wrong operation can be avoided due to its simple and effective "Five Prevention".
It can equipped with VD4 type vacuum circuit breakers.
For the truck has good interchangeability, it is easy to change vacuum circuit breakers.
For saving space, the switchgear can be installed against wall and maintained from the front side.
There are enough place for connection cables.
Instant earthing switch can be used for eathing operation and short circuiting operation.
It can be separated equipped with heater inside the VCB compartment and cable compartment to prevent condensation and erosion.
It conforms to GB3906.DL404-1997 and refers to IEC-298 standard.
Applying ambient conditions
Ambient temperature: The max. temperature should below +40oC, the min .temperature should above -15oC.
The height above sea level should be no higher than 1000m.
The earthquake intensity should be no more than 8 degree.
Relative humidity: The average humidity of a day should be no more than 95%.The average humidity of a month should be no more than 90%.
Water vapour pressure: The average vapour pressure of a day should be more than 2.2kPa. The average vapour pressure of a month should be no more than 1.8kPa.
It should be used in the place where it is free from fire, explosion, serious fifth, chemical erosion and vibration.

The main technical specification of the cubical switchboard               

No.NameUnitData
1Rated voltagekV3.6  7.2  12
2Rated currentA630  1250  1600  2000  2500  3150  4000
3Rated frequencyHz50
4Rated short time withstand currentkA16  20  25  31.5  40  50
5Rated peak withstand current40  50  63  80  100  125
6Rated power frequency withstand voltagePole to pole,
pole to earth
kV42/1min
Across nterrupter48/1min
7Rated lightning impulse withstand voltagePole to pole,
pole to earth
75
Across nterrupter85
8Rated short-time durationS4
9Degree of Protection IP4X


Main technical specification of vacuum breaker                             

No.NameUnitData
1Rated voltagekV3.6  7.2  12
2Rated currentA630 1250 1600 2000 2500 3150 4000
3Rated short circuit breaking currentkA16 20 25 31.5 40 50
4Rated short-time withstand current16 20 25 31.5 40 50
5Rated peak withstand current40 50 63 80 100 125
6Rated power frequency withstand voltagePole-to-pole,
Pole-to-earth
kV42/1min
Across nterrupter48/1min
7Rated lightning impulse withstand voltagePole-to-pole,
Pole-to-earth
75
Across nterrupter85
8Rated short-time durationS4
9Opening timems20≤t≤65
10Closing timems20≤t≤75
11Breaking operations of rated short circuit- breaking currentCycle30(≤31.5kA)20(≥40kA)
12Mechanical enduranceCycle20000(≤31.5kA)  10000(≥40kA)


Main technical specification of spring operation mechanism                     

NameUnitData
Rated operating voltageOpening coilVDC220/110  AC220/110
Closing coil
Power of coilOpening coilW or VA245
Closing coil
Power of energy-stored motorW50
Rated voltage of energy-stored motorVDC220/110  AC220/110
Charging timeS≤10

 
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