ELH1-126/T2500-40 Gas Insulated Metal Closed Switchgear (GIS)

SF6 Gas Insulated Switchgear (hereinafter referred to as GIS) is composed of circuit breaker, disconnector, grounding switch, transformer, lightning arrester, busbar, bushing or cable terminal and other electrical components connected directly with each other. All the components are located in the grounded metal housing, which is filled with insulation. SF6 gas for edge and arc extinguishing.
ELH1 type GIS series products Tianshui Great Wall Switch Factory Co., Ltd. is the crystallization of tripartite cooperation with GUPVEI of Russia and switch Institute of Chinese Academy of Electric Power Sciences. It has absorbed and applied the most advanced international technology and operation experience in the process of research and development, manufacture and inspection. It has advanced technology, maturity, reliability and easy maintenance. And so on. The main technology is in the leading level in China.

The rated voltage of ELH1 GIS produced by the company is 126 kV, and the short circuit current is 40 kA. The equipment meets the relevant requirements of GB7674 "72.5 kV and above gas insulated metal enclosed switchgear" and other standards. Suitable for indoor and outdoor installation and operation.

No	Rated parameters			Parametric values
1	Rated voltage kV			126
2	1 min power frequency withstand voltage (RMS) kV			Intersection and opposition		230
				Isolation fracture		265
	Lightning Shock Tolerance Voltage (Peak) kV			Intersection and opposition		550
				Isolation fracture		630
3	Rated Frequency Hz			50
4	Rated current A		Main Bus	indoor	3150	outdoors	2500
			Circuit breaker		2500		2000
5	icw kA			40
6	Rated peak tolerable current kA			100
7	Rated short circuit duration s			Main circuit		4
				Grounding circuit		2
8	Rated Pressure of Sulfur Hexafluoride Gas (Meter Pressure at 20 C) MPa			Circuit Breaker Room		0.6
				Other units		0.4
9	Annual Leakage Rate of Sulfur Hexafluoride Gas			≤0.5%
10		Rated short circuit breaking current (RMS) kA		40
		Rated short circuit switching current (peak value) kA		100
		DC Component of Rated Short Circuit Opening Current		不小于41%
		Total breaking time ms		≤60
	Circuit breaker	Closing time ms		≤150
		Opening time ms		35±5
		Closing-sharing time ms		80
		Opening speed m/s		5.0±0.5
		Closing speed m/s		3.0±0.5
		Rated operation cycle		分-0.3s-合分-180s-合分
		The operation times of rated current without overhaul are as follows3000(次)		3000
		No overhaul full capacity interruption times (times)		20
		Mechanical life (secondary)		6000
11	Isolating switch	Capacitance of Charging Capacitor Current of Open-close Bus A		2
		Open-close exciting current capability A		6
		Switch-on Bus Current/Voltage A/V		1600/30
		Mechanical life (secondary)		2000
12	Fast Grounding Switch	Rated short circuit switching current (peak value)kA		100
		Mechanical life (secondary)		2000