HG4-1112 Environmentally Friendly Gas-Insulated Switchgear (C-GIS)

HG4-12 Green Cubical type gas-insulated switchgear (Green C-GIS) is an environment-friendly gas-insulated metal-enclosed switchgear independently developed by Huade High-Tech, which uses clean air as the insulating medium. With international leading technical level, it is a new generation of medium voltage switchgear integrating vacuum arc extinguishing technology, APG solid sealing technology, gas insulation technology and interface insulation technology, complying with standards like IEC62271, GB11022, GB3906 and DL/T404. Passing all type tests and China national new product technical appraisal, the product is widely applied to various power systems, such as power transmission and transformation station network, urban power supply network, large industrial and mining enterprises, petrochemical industry, metallurgy and urban rail transit.

Eco-Friendly Design:Embraces clean air as an insulating medium, eliminating the necessity for SF6 gas and reducing toxic emissions, thus minimizing environmental impact.
Compact and Efficient:Engineered with a modular design, the switchgear embodies a compact structure, small form factor, and minimal footprint, optimizing spatial efficiency to the fullest.
Robust Construction:High voltage components are securely enclosed within a stainless steel enclosure, delivering impeccable waterproofing and dustproofing performance. Immune to environmental factors and altitude, ensuring operational safety and maintenance-free functionality.
Flexible Configuration:Offers a diverse range of primary schemes, ensuring adaptability to various system wiring requirements, thus enhancing overall flexibility.
Intelligent Control:Equipped with an intelligent control and protection unit boasting powerful functionalities, including control, protection, and measurement, seamlessly meeting the automation demands of distribution networks.
Reliable Operation:Incorporates dependable mechanical and electrical interlocking mechanisms, effectively averting misoperations and guaranteeing convenient and reliable operation under all circumstances.

No.	Item			Unit	Technical parameters
1	Voltage			kV	11		12
2	Rated frequency			Hz	50, 60
3	Rated insulation level	Power frequency withstand voltage (1min)	Phase to phase, phase to earth	kV	28		42
			across the isolating distance open contact gap	kV	32		48
		Lighting impulse withstand voltage	Phase to phase, phase to earth	kV	75
			across the isolating distance open contact gap	kV	85
		Power frequency withstand voltage of auxiliary and control circuit (1min)		kV	2
4	Rated current			A	630，1250，2500，3150，4000
5	Rated short-circuit breaking current			kA	25, 31.5, 40
6	Rated short circuit making current			kA	65, 82, 104
7	Rated short-time withstand current			kA	25, 31.5, 40
8	Rated peak withstand current			kA	65, 82, 104
9	Rated short-circuit duration			s	4
10	Partial discharge			pC	≤20
11	Insulation gas				Clean air
12	Water content in gas compartment			ppm	≤150
13	Annual leakage rate			%	≤0.1
14	Rated gas-filling pressure (20°C, rel.)			Mpa	0.04
15	Alarm pressure (20°C, rel.)			Mpa	0.02
16	Minimum functional pressure (20°C, rel.)			Mpa	0
17	Rated operating sequence				O-0.3s-CO-15s-CO O-0.3s-CO-180s-CO
18	Vacuum circuit breaker grade				M2 E2 C2
19	VCB mechanical life			Time	10000
20	EDS mechanical life			Time	3000
21	Rated single capacitor bank breaking current			A	630
22	Rated back-to-back capacitor bank breaking current			A	400
23	Protection level (switchgear enclosure //gas compartment)				IP41/IP67
24	Loss of service continuity category				LSC2A	LSC2
25	Internal arc fault IAC			AFLR	25kA/1s	31.5kA/0.5s 40kA/0.5s