GSR8-12 Air Gas-insulated Metal-enclosed Switchgear (Ring Main Unit ) - Product

Product Overview

GSR8-12 Air Gas-insulated Metal-enclosed Switchgear is a new type of medium-voltage switchgear independently developed by our company. This product is mainly used in 10kV 50Hz three-phase AC power supply systems, and is also suitable for power plants, residential areas, industrial and mining enterprises, substations and other important power supply places to achieve uninterrupted and reliable power supply. The product adopts a modular design and can be arranged arbitrarily according to different design schemes to achieve a perfect combination of common box type and expansion unit, meeting the needs of various secondary transmission and distribution substations for flexible use of compact switch cabinets.

GSR8 series switchgear is a completely sealed system. All primary live parts and switchgear are enclosed in a stainless-steel gas tank and are not affected by the environment. It has the characteristics of reliable operation, safety, compact structure design, small footprint, and lifelong maintenance-free.

Product Features

Safe and reliable

The high-voltage components and main switch are completely sealed in a stainless-steel gas tank with IP67. The interior of the gas tank is not affected by the external environment and has short-term anti-flood and anti-condensation functions.
The equipment has reliable pressure release devices and pressure relief channels to ensure personal safety when a fault occurs; it has a complete mechanical interlocking device to prevent misoperation to the greatest extent.

Green and environmentally friendly

Air insulation, green and environmentally friendly, with a wider range of applications
Insulating performance is not affected by altitude.
Can be installed in humid, sandy and dusty areas, salt spray, mines and other areas without taking special precautions.

Modularity, flexible combination and extension

Having different module design: C module, V module, PT module, and Metering module, etc., they can combine freely to form a Ring Main Unit.
Modules are connected by extension busbar to achieve full modular configuration.

Technical Parameters

No.	Description				Unit	Value
1	Rated voltage				kV	12
2	Rated frequency				Hz	50
3	Rated Current				kA	630
4	Insulation level	Rated power frequency （1min）		Phase to phase, phase to earth	kV	42
				fracture	kV	48
		Lightning impulse		Phase to phase, phase to earth	kV	75
				fracture	kV	85
5	Rated short-time withstand current				kA	25
	Rated short-circuit duration				s	4
6	Rated withstand current (peak)				kA	63
7	Rated short-circuit breaking current				kA	25
8	Rated short-circuit making current		Vacuum interrupter		kA	63
			Earthing switch		kA	63
9	Auxiliary circuits and control circuits		Rated voltage DC/AC		V	220
			Power-frequency (1 min)		V	2000
10	Mechanical life	circuit breaker			Times	10000
		Isolation/earthing switch				5000
11	Electrical life	circuit breaker			Class	E2
		earthing switch				E2
12	Degree of protection					IP4X

Switchgear dimension

Module type	W(mm)	D(mm)	H(mm)
V module	460	770	1640+350
C module	460	770	1640+350
M module	810	840	1640+350
PT module	660	770	1640+350