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KYN28A-12 (GZS1-12Z) central metal-clad and metal-enclosed switchgear

  Model

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K---------------------------------------metal-clad and metal-enclosed Switchgear

Y---------------------------------------withdrawable

N---------------------------------------Indoor

28A (GZS1-12)----------------------design No.

12-------------------------------------- rated voltage (KV)

□--------------------------------------primary plan No.

□--------------------------------------operating mechanism characteristic code

                            D: electromagnetism   T: spring

□--------------------------------------rated current (A)

□--------------------------------------rated short circuit drop-out current (KA)

  General

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   KYN28A-12 central metal-clad and metal-enclosed Switchgear is produced independently based on the advanced manufacturing technique from home and abroad. It can be used to replace all sorts of old metal-enclosed Switchgears.

  The shell adopts the aluminum-zinc alloy coated steel sheet, processed by CNC machining tool, which ensure the high mechanical strength. The door is anti-corrosion and anti-impact coaedt. And the protection degree is IP4X

   The main switch can be with the ZN63A (VSI) type of circuit breaker of this company, C3 series of fixed load switch; it is also with the interface communication.

The insulation distance is over 125mm, composite insulation is over 60mm. all the circuit breakers have the features of long working life, high parameters, less maintenance, small size and so on

  Main technical parameters

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item		Unit	Parameters
rated voltage		KV	12
rated current		HZ	50
rated current of circuit breaker		A	630\2000
rated current of switch cabinet		A	630\2000
rated current of dynamic stability (4S)		KA	16\20\25\31.5\40\50
rated current of dynamic stability (peak)		KA	40\50\63\80\100\125
rated short circuit drop-out current		KA	16\20\25\31.5\40\50
rated short circuit making current (peak)		KA	40\50\63\80\100\125
Rated insulation level	1min power frequency withstand voltage	KA	24	32	42
	lighting impulse withstand voltage	KA	40	60	75
protection degree	IP2X shell: IP4X, it is IP2X when compartment and circuit breaker room is open

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