HB-12 Eco-Friendly Gas Insulated Ring Main Unit

Ceho is a manufacturer in China, and you can buy our HB-12 Eco-Friendly Gas Insulated Ring Main Unit with confidence. And we will offer you the best after-sale service and timely delivery. This ring main unit is a complete set of power distribution device of 12KV, three-phase AC 50Hz,single bus and single bus segment system.

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Product Description

The HB-12 Eco-Friendly Gas Insulated Ring Main Unit is a complete set of distribution equipment with a voltage of 12KV, three-phase AC 50Hz, single busbar and single busbar section system. It has a simple structure, flexible operation, reliable interlocking, and convenient installation. Different users can be provided with satisfactory technical solutions for different applications. By adopting sensor technology, automatic control technology and information technology, along with advanced technical performance and simple and flexible assembly solutions, it can meet the constantly changing market demands and is suitable for the intelligent requirements of power grids.

HB-12 Eco-Friendly Gas Insulated Ring Main Unit is applicable to industrial and civil cable ring networks and distribution network terminal projects. As for the reception and distribution of electrical energy, it is particularly suitable for power distribution in urban residential areas, small secondary substations, switch offices, cable branch boxes, box-type substations, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, hospitals, sports venues, railways, tunnels and other places.

Service Conditions

Ambient air temperature: -40℃-+50℃

Humidity: Maximum average relative Value, daily<95%, monthly<90%

Altitude: ≤4000 M

Seismic resistance: 8 degrees

Use under special conditions can be negotiated

Model

Dimensions of The Switchgear

Cabinet size (W×D×H)	Circuit breaker cabinet	Cable connection cabinet	PT cabinet
Top expansion	420×850×1950	420×850×1950	600×850×1950
Side expansion	420×850×2000	420×850×2000	600×850×1950

Technical Parameter

The main technical parameters of the Environmental Gas Insulated RMU

Rated voltage	kV	12
Rated current	A	630
Arc extinguishing method		Vacuum switch tube
lnsulation method		Pure air or nitrogen
Rated short circuit breaking current	kV	20
Rated short circuit breaking times	Times	30
Rated short-circuit closing current (peak)	kV	50
Rated short-time withstand current 3s (rms)	kA	20 (Main circuit), 17, 4 (Earthing circuit)
Rated peak withstand current	kA	50 (Main circuit), 43, 5 (Earthing circuit)
Power frequency withstand voltage(1min)	kV	42 (Phase to earth, phase to phase), 48(breaking)
Lightning impulse withstand voltage	kV	75(Phase to earth, phase to phase), 85(breaking)
Partial discharge	PC	≤20
Rated sequence of operations of vcbs		O-0.3S-CO-180S-CO
Withstands internal arc faults	KA\S	20/0.5
Mechanical life	Times	10000 (VCB) 3000 (Isolating switch, Earthing switch)
Main circuit resistance of each phase	μΩ	120
Earthing switch rated short-circuit making current (peak value)	KA	43, 5
Earthing switch closing times	Times	2
Degree of protection	MPa	IP67 (Gas box), IP4X(body case)
Rated gas pressure (gauge pressure)	MPa	0.02
Minimum operating gas pressure	0/0	0
Rated annual leakage rate	ppm	0.01
Moisture content in air box	kV	≤150
Auxiliary circuit power frequency withstand voltage (1min)		2

Main technical parameter of circuit breaker

Rated voltage	12
Rated current	630
Rated short-circuit breaking current	20
Rated short-circuit closing current (peak)	50
Rated short-time withstand current 3s (rms)	20
Rated peak withstand current	50
Rated sequence of operations	O.-0.3s-C.O.-180s-C.O.
Power frequency withstand voltage(1min)	42 (Phase to earth, phase to phase), 48 (breaking)
Lightning impulse withstand voltage (peak)	75 (Phase to earth, phase to phase), 85 (breaking)
Partial discharge	≤5
Mechanical life	10000
Main loop resistance per phase	≤110
Contact spacing	9±1
Contact pressure over-travel	3±0, 5
Contact final pressure	1800±100N
Three-phase opening (different phases)	≤1
Contact closure bounce time	≤2
Closing time	≤70
Opening time	≤60
Average opening speed	1.1+0.2
Average closing speed	0.8+0.2
Rated number of short-circuit current breaks	30

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Contact Info

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Address

No. 381, Jingqi Road, Economic Development Zone, Yueqing City, Zhejiang Province, China
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Tel

+86-19905879911
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Email

kevin@ningboziyao.com

For inquiries about power transformer, box-type substation, switchgear or price list, please leave your email to us and we will be in touch within 24 hours.