KYN28A-12 Armouring Removable AC Metal Enclosed Switchgear

Overview

KYN28A-12(Z) Indoor AC high-voltage metal-armored withdrawable switchgear (hereinafter referred to as “switchgear”) is suitable for three-phase AC 50Hz power systems and is used to receive and distribute electrical energy and to control, protect and monitor circuits.

This product complies with the following standards: GB3906 “3~35kV AC Metal-enclosed Switchgear”, GB/T11022 “Common Technical Requirements for High Voltage Switchgear and Controlgear”, and IEC60298 “AC Metal-enclosed Switchgear and Controlgear with Rated Voltage of 1kV and Above”.

Technical Parameter

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 (4S)		kA	20, 25, 31.5, 40
Rated peak withstand current (peak)		kA	50, 63, 80, 100
Rated short-circuit breaking current		kA	20, 25, 31.5, 40
Rated short-circuit closing current (peak value)		kA	50, 63, 80, 100
Rated insulation level 1-minute power frequency withstand voltage	Between the poles and between the poles and the earth	kV	24, 32, 42
	Between fractures	kV	24, 32, 42
Lightning impulse withstand voltage (peak value)	Between the poles and between the poles and the earth	kV	40, 60, 75
	Between fractures	kV	46, 70, 85
Class of protection			The enclosure is IP4X, and when the compartments and circuit breaker compartment doors are open, they are IP2X.