KYN28A-12 Armored Removable AC Metal Enclosed Switchgear

PRODUCT DESCRIPTION KYN28A-12(GZS1) type armored removable AC metal-enclosed switchgear (hereinafter referred to as "switchgear") is suitable for three-phase AC 50Hz power system for receiving and di

PRODUCT DESCRIPTION

KYN28A-12(GZS1) type armored removable AC metal-enclosed switchgear (hereinafter referred to as "switchgear") is suitable for three-phase AC 50Hz power system for receiving and distributing power and controlling, protecting and monitoring of the circuit in real time. The newly introduced and developed large current and high breaking switchgear can also be used as a high-voltage generator export.

The product is in line with GB3906 "3-35kV AC metal enclosed switchgear", GB/T11022 "common technical requirements of high-voltage switchgear and control equipment standard", IEC62271 "AC metal-enclosed switchgear and control equipment with rated voltage 1kV above 52kV and below".

The Main Technical Parameters

Item			Unit	Data
Rated power supply			kV	3.6、7.2、12
Rate frequency			Hz	50
Rated current of circuit breaker			A	630、1250、1600、2000、2500、3150、4000
Rated current of switchgear			A	630、1250、1600、2000、2500、3150、4000
Rated short-time withstand current(4s)			kA	16、20、25、31.5、40、50
Rated peak withstand current (peak)			kA	40、50、63、80、100、125
Rated short circuit breaking current			kA	16、20、25、31.5、40、50
Rated short circuit closing current (peak)			kA	40、50、63、80、100、125
Rated Insulation Level	1min power frequency	Between the poles	kV	24、32、42
	withstand voltage	Between fractures	kV	24、32、48
	Lightning impulse	Between the poles	kV	40、60、75
	withstand voltage(peak)	Between fractures	kV	46、70、85
Protection class			The enclosure is IP4X, compartment,and the circuit breaker compartment is IP2Xwhen the door is open.

Note: 1.The short-circuit capacity of the current transformer should be considered separately;
2.See ZN63A-12 technical parameters in the corresponding sample.
3.1000m-altitude rated current ≤ 1250A rated breaking current ≤ 31.5kA.