China′s Fastest Growing Factory Best Quality GSM-12L Hv Switchgear Metal-Enclosed AC Ring Main Unit Air Insulated Switchgear

• Certification: ISO9001
• Shell Material: Stainless Steel
• Voltage Level: Medium Voltage
• Installation: Fixed
• Structure: Cabinet
• Current: AC
• Model NO.: GSM
• Transport Package: Wooden Case
• Trademark: GRENO
• Origin: Xiamen, China
• Production Capacity: 50000PCS

Product Description

Description of  GSM-12 HV Metal-Enclosured AC Ring Main Unit

Air insulated switchgear GSM-12 HV switchgear metal enclosed AC ring main unit is a new HV apparatus which introduced from abroad and accord with the requirement of rural distribution and city distribution in nation. Main switch, operation mechanism and component use the GSC-12/24 model SF6 switch equipment produced  by our company. Also can use the VSG model vacuum circuit breakeraccording to requirement of customer, operation type is manual and motor.
Conditions:

1. Ambient temperature: -25°c~+40°c;

2. Altitude: ≤1000m;

3. Relative humidity: daily average ≤ 95%, monthly average ≤ 90%;

4. Occasions without flammable and explosive matter, without corrosive chemical and frequent severe vibration, without strong shake,

Product feature

Panel structure: The panel body is enclosed by 2mm aluminium-zinc plated steel plate after multi-bending. It is simple, firm, delicate and peculiar.

1. Busbar compartment: The busbar compartment is located in the top and connect with neighhboring panel.

2. Load break switch is a separated unit with SF6 gas.

3. Cable compartment: Approximate 75% room of connecting cable and installing fuse, earthing switch and PT.

4. Mechanism chamber and interlock: The chamber consists of operating mechanism, mechanism interlock, position indicator, auxiliary contact trip coil, charge indicator and interlock.

5. LV chamber: It is lockted in the top. It mainly used for installing instrument, relay and motor.

6. Circuit breaker compartment: The circuit breaker (SF6 or Vacuum) is located below load break switch.

Pressure release:

A. Upper pressure release: It is mainly used for releasing gas pressure which produced by arc accident in busbar load break switch compartment.

B. Down pressure release: It is mainly used for ealeasing gas pressure which produced by arc accident in cable small compartment.

Technical specification of  GSM-12 Air Insulated Switchgear 

No.	Item	Unit	Technical Data
1	Rated voltage	KV	3,6,10
2	Highest voltage	KV	3.6,7.2,12
3	Main bus-bar rated current	A	630
4	Rated short circuit breaking current	KA	50(fuse)
5	Rated short time withstand current	KA	20(3S)
6	Rated peak withstand current	KA	50
7	Rated transfer current	A	1700
8	Rated frequency	HZ	50/60
9	Degree of protection		IP3X
10	Bus system		Single bus, single bus with bypass
11	Operating method		Electromagnetism, spring storage energy manual