KYN28-12/24 series switchgear
KYN28-12/24 series switchgear

Product features

Safe and reliable: Metal armored and fully enclosed structure
 Take the measures of balancing the electric field, prime conductor’s material is insulating heat shrinkable material with high insulation performance.
 The low voltage chamber and each high voltage compartment are independently separated.
 Quick opening and closing earth switch is used for grounding and has the ability to open or close short circuit current.
 The operation of all equipment, including the opening and closing of circuit breakers, circuit breaker handcart push in or move out and the operation of opening and closing of the grounding switch, can be carried out on the condition of the door panel closed
 With a reliable locking device, can effectively prevent the misoperation.
 Looking through the front and rear observation windows of the door panel, it is convenient to check the opening and closing state of the circuit breaker and the position of the handcart, mechanism energy storage state, the opening and closing position of the grounding switch and the connection of the cable head.
 The products meet IEC62271\GB/T3906 standards and China's electric power industry standard.
 Strong practicality
 Enclosure protection classification IP4X, to prevent dirt and small animals entering.
 The vacuum circuit breaker is maintenance-free type, a little maintain is needed for its matched operating mechanism.
 The interchangeability of handcart is good; it is very convenient to replace circuit breaker.
 The secondary wire is laid in a generous groove, which is beautiful and easy to check.

Wide adaptability
 Suitable for cable and busbar in and out or cable and busbar mixed in and out.
 Suitable for all kinds of conventional cable head.
 Can be connected by multiple cables

Main technical parameters

Serial numberProjectUnitParameters
1Rated voltagekV1224
2Rated frequencyHz5050
31min Power frequency  withstand voltage (effective value)kVPhase to phase42Phase to phase65

between open contacts


between open contacts

Lightning shock resistance  voltage (peak)kVPhase to phase75Phase to phase125

between open contacts


between open contacts

4Rated currentA630~20002500~4000630~3150
5Rated short circuit  breaking currentkA25、31.5、4031.5、40、5025、31.5
6Rated short circuit close current (peak)kA63、80、10080、100、12563、80
7Rated short-time withstand  current (heat stable current 4S)kA25、31.5、4031.5、40、5025、31.5
8Rated peak withstand  tolerance current (dynamic stability current)kA63、80、100800、100、12563、80
9Auxiliary control loop  rated voltageVDC or AC:110/220
10Protection grade IP41(Open the door between  compartments is IP2X)
11Dimensions (width X depth X  height)mm800×1500×23001000×1860×2380


KYN28-12/24 switch cabinet consists of two parts: cabinet body and removable parts (commonly known as handcart).
Cabinet and the metal partition are divided into several functional compartments, such as busbar room, cable room and low voltage room.
The removable parts of switch cabinet can be equipped with vacuum circuit breaker handcart, voltage mutual inductance handcart, arrester handcart, isolation handcart and fuse handcart, etc.