Medium Voltage Switchgear

Shell Material
Aluminum Alloy
Voltage Level
Medium Voltage
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Medium Voltage Switchgear

KYN28 indoor metal-clad with drawable switchgear(hereinafter short as switchgear) is a complete power distribution device for 3.6~40.5kV, 3-phase AC 50/60Hz,single-bus and single-bus sectionalized system.

It is mainly used for power transmission of middle/small generators in power plants; power receiving, transmission for substations in power distribution and power system of factories, mines and enterprises, and starting of large high-voltage motor, etc. so as to control, protect and monitor the system. The switchgear meets IEC298,GB3906-91.In addition to be used with domestic VS1 vacuum circuit breaker, it can also be used with VD4 from ABB,3AH5 from Siemens domestic ZN65A, and VB2 from GE, etc. It is  truly a power distribution device with good performance.

In order to meet the requirement for wall mounting and front-end maintenance, the switchgear is equipped with a special current transformer, so that the operator can maintain and inspect it in front of the cubicle.
Enclosures able to withstand internal arcing
3 or 4 sides internal arc protection IAC: A-FL and A-FLR. Internal arc withstand: 12.5 kA 1s, 16 kA 1s and 20 kA 1s
Mechanical and electrical interlocks, to prevent incorrect operations
100% factory-tested without the need for further tests on site
Easy upgraded to meet your need and adapted to the extension of your installations
Integration in factory-built outdoor substations for which the SM6 is particularly well designed
Intelligent, connectable components like SC110 and TH110 provide continuous information about the health of your electrical installations, enabling asset management optimization through preventive maintenance.

KYN28-12 type air insulated switchgear

Main technical specifications

1 Rated voltage kV 3.6/7.2/12/17.5/24
2 Rated frequency Hz 50/60
3 Rated normal current A 1250,1600,2000,2500,3150,4000
4 Branch busbar Rated current A 1250,1600,2000,2500,3150,4000
5 Main busbar Rated current A 1250,1600,2000,2500,3150,4000
6 Rated power-frequency withstand voltage kV 40/50/60
7 Rated lightning impulse withstand voltage kV 75/95/125
8 Rated peak withstand current kA 50/63/80/100
9 Rated short-circuit current kA 20/25/31.5/40
10 Protection type   IP4X for housing


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