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HG9-24 Green GIS

HG9-24 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.

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Product Details

Product Details：
Key Features:
ㆍ Eco-Friendly Design: Utilizes clean air as an insulating medium, eliminating the need for SF6 gas and reducing toxic emissions, ensuring minimal impact on the environment.
ㆍ Compact and Efficient: Miniaturized with a modular design, the product boasts a compact structure, small size, and a minimal footprint, maximizing space efficiency.
ㆍ Robust Construction: High voltage components are securely sealed within a stainless steel enclosure, providing waterproof and dustproof performance. Resilient to environmental factors and altitude, ensuring safety and maintenance-free operation.
ㆍ Flexible Configuration: Offers flexible and diversified primary schemes to accommodate various system wiring requirements, enhancing adaptability.
ㆍ Intelligent Control: Equipped with an intelligent control and protection unit, featuring powerful control, protection, and measurement functions, meeting the automation needs of distribution networks.
ㆍ Reliable Operation: Incorporates reliable mechanical and electrical interlocking mechanisms, effectively preventing mis-operation and ensuring convenient and dependable operation.

Technical Parameters

S/N	Item			Unit	Technical parameters
1	Voltage			kV	24
2	Rated frequency			Hz	50, 60
3	Rated insulation level	Power frequency withstand voltage (1min)	Phase to phase, phase to eearth	kV	65
		Power frequency withstand voltage (1min)	across the isolating distance open contact gap	kV	79
		Lighting impulse withstand voltage	Phase to phase, phase to earth	kV	125
		Lighting impulse withstand voltage	across the isolating distance open contact gap	kV	145
		Power frequency withstand voltage of auxiliary and control circuit (1min)		kV	2
4	Rated current			A	630,1250, 2500
5	Rated short-circuit breaking current			kA	25, 31.5
6	Rated short circuit making current			kA	65, 82
7	Rated short-time withstand current			kA	25, 31.5
8	Rated peak withstand current			kA	65, 82
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-fillingpressure (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 of vacuum circuit breaker			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
25	Internal arc fault IAC			AFLR	25kA/1s