KYN28A-12 Metal-clad Withdrawable AC Switchgear

The KYN28A-12(Z) indoor AC metal-clad withdrawable switchgear is designed for three-phase, 50 Hz AC power distribution systems and is used for the reception and distribution of electrical energy, as well as the control, protection, and monitoring of electrical circuits.

Technical Parameters

Item		Unit	Data
Rated Voltage		kV	6、7.2、12
Rated Frequency		Hz	50
Rated Current Of Circuit Breaker		A	630、1250、1600、2000、2500、3150
Rated Current Of Switchgear		A	630、1250、1600、2000、2500、3150
Rated Short-Time Withstand Current		kA	20、25、31.5、40
Rated Peak Withstand Current		kA	50、63、80、100
Rated Short-Circuit Breaking Current		kA	20、25、31.5、40
Rated Short-Circuit Making Current		kA	50、63、80、100
Rated Insulation Level 1-Minute Power-Frequency Withstand Voltage	Between poles、Pole-to-earth	kV	24、32、42
	Across the open contacts	kV	24、32、42
Lightning Impulse Withstand Voltage (Peak)	Between poles、Pole-to-earth	kV	40、60、75
Lightning Impulse Withstand Voltage (Peak)	Across the open contacts	kV	46、70、85
Degree of Protection			The shell is IP4X, and when the compartment and circuit breaker room doors are opened, it is IP2X