KYN28-12 Distribution Board High Voltage Metal Clad Enclose Electrical Industrial Switchgear
KYN28-12 armored metal-enclosed switchgear (hereinafter referred to as KYN28-12 switchgear) is suitable for three-phase AC 50Hz (60Hz), 7.2~12kV single busbar and single busbar segmented power system, with "five-proof" function. The removable part of the switchgear can be equipped with components such as vacuum circuit breakers and vacuum contactors.
KYN28-12 switchgear meets IEC298, GB3906, DL404 and other standards.
The degree of protection of the switchgear cabinet is IP4X. When the breaker door is opened and the handcart is removed, the degree of protection is IP2X.
All relevant IEC specifications and national or local safety guidelines are to be observed during installation and operation of the system.
Technical parameter
Rated voltage | kV | 12(Can be customized according to local national standards) | |
Rated insulation level | 1min power frequency withstａnd voltage (effective value) | kV | 42 |
Lightning impulse withstａnd voltage (peak) | kV | 75 | |
Rated frequency | Hz | 50 | |
Main busbar rated current | A | 630,1250,1600,2000,2500,3150,4000 | |
Branch busbar rated current | A | 630,1250,1600,2000,2500,3150,4000* | |
4 second thermal stable current (RMS) | kA | 16,20,25,31.5,40** | |
Rated dynamic steady current (peak)*** | kA | 40,50,63,80,100 | |
*Equipped with ventilation device **40 kA is 3 seconds The short-circuit capacity of the instrument transformer should be considered separately
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