EGSK-12 Environmentally Friendly Gas-Filled High-Voltage Switchgear

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EGSK-12 Environmentally Friendly Gas-Filled High-Voltage Switchgear

1. Product Overview

EGSK-12 is a new generation of green and environmentally friendly AC metal-enclosed gas-insulated switchgear developed according to the needs of today's power grid. It is fully suitable for public and industrial distribution networks, infrastructure projects, rail transit, metallurgy, petrochemicals, docks, ships, drilling platforms and other fields. It is used to receive and distribute electric energy and control, protect and monitor circuits.

2. Technical Parameters

Rated insulation level	project	unit	parameter
	Rated voltage	kV	12
	Rated frequency	Hz	50
	Insulation medium	kV	N2
	lmin power frequency withstand voltage (zero gauge pressure)		42
	Lightning impulse withstand voltage (zero gauge pressure)		75
	Auxiliary circuit 1min power frequency withstand voltage		2
	Partial discharge (1.1 times rated voltage)	pC	≤10
	Rated current	A	≤3150
	Rated short-circuit breaking current	kA	≤40
	Rated short-circuit making current	kA	≤100
	Rated short-time withstand current (4S)	kA	≤40
	Rated peak withstand current	kA	≤100
	Switching single/back-to-back capacitor bank current	A	630/400
	Rated cable charging breaking current	A	25
	Circuit breaker electrical life	Second-rate	50
	Circuit breaker mechanical life	Second-rate	10000~30000(depending on rated current)
	Mechanical life of disconnectors and earthing switches	Second-rate	3000
	Internal arc level	kA/s	IACA FLR31.5kA/0.5s,25kA/ls
	Temperature rise test (zero gauge pressure)	/	l.llr
	Rated operating cycle	/	O-0.3s-CO-180s-CO
	Rated inflation pressure (relative)	MPa	0.02
	Alarm pressure (relative)	MPa	0.01
	Minimum working pressure (relative)	MPa	0
	Annual leakage rate	%/Y	<0.05
	Protection level	/	Air box: IP65; others: IP4X

EGSK-12 Environmentally Friendly Gas-Filled High-Voltage Switchgear

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E-mail:cnsk@cnsk.com.cn

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