BKRM6-12 10KV SF6 Gas Insulated Switchgear

SF6 Swichgear - BKRM6 12KV/24KV/35KV(GIS)

The SF6 gas insulated switchgear is suitable for middle voltage power distribution system with a rated voltage of 12kV. It could be used as RMUs in a power supply network, fault isolating switches and sectionalizing switches. If equipped with distribution automation devices (FTU/DTU) and communication devices, the SF6 insulated switchgear could communicate with the control center, measure the cable voltage, current, etc, and monitor the working status of switches. 

BKRM6- 40.5 series of ring main unit is SF6 gas-insulated metal common tank enclosed switchgear, consisting of load break switch unit,load break switch fuse combination electrical unit, vacuum circuit breaker unit, and the incoming line unit of bus. It adopts a range ofadvanced technologies and materials, with excellent electrical and mechanical properties, less affected by environment and climate, in smallsize, easy to install easy to operate, with no need of maintenance, and can be flexibly combined. Its clear and intuitive design ensures simple and direct operation, the feeder's connection capacity is large, suitable for a variety of wiring systems.

Besides, we can replace the SF6 gas with nitrogen(N2 gas) that it will become a environmental friendly gas insulated switchgear. The green gas insulated switchgear safer and environmentally friendly more than SF6 GIS and it will replacing SF6 GIS in the future.   

Features of SF6 Gas Insulated Switchgear

• The SF6 is the insulation material which is sealed in a stainless-steel enclosure, fully-insulated and maintenance-free.

• Long life endurance.

• Obvious watchable open contacts.

• Reliable interlock and safer operation.

Service Environment of SF6 Gas Insulated Switchgear

• Air temperature: Maximum temperature: +40℃; Minimum temperature:-25℃

• Humidity: Monthly average humidity 95%; Daily average humidity 90% .

• Altitude above sea level: Maximum installation altitude: 2500m

• Ambient air not apparently polluted by corrosive and flammable gas, vapor and etc.

• No frequent violent shake

Technical Parameters of SF6 Gas Insulated Switchgear

No	Item	Unit	C/F				CB module
			Load break switch				Circuit breaker
1	Rated voltage	kV	12	24	36		12	24	36
2	Rated current	A	630(200A/F)			1250
3	Rated frequency	Hz	50/60
4	1 min power frequency   withstand voltage	kV	45	55	80		45	55	80
5	Lightning impulse   withstand voltage	kV	75	125/150	170/195		75	125/150	170/195
7	Rated active load and   close circuit breaking current	A	630			1000
8	Rated   cable charge breaking current	A	50&10
9	Rated short circuit   breaking current	kA	/				20	16	16/20
10	Rated short circuit   making current(peak)	kA	63	50	40/50		63	50	40/50
11	Short time(2s)   withstand current,load switch/earth	kA	25/20	20/20	16/20		25/20	20/20	16/20
12	Rated withstand   current(peak)	kA	63	50	40/50		63	50	40/50
13	Mechanism life	Times	3000		2000		10000	3000	5000

Applications of SF6 Gas Insulated Switchgear

SF6 gas insulated switchgear is widely applied in airport, power generation station, railway station, coal mine and etc..

Bokr Elec has rich experience in manufacture and supply of SF6 switchgear with gas insulated, vacuum circuit breaker and disconnector without maintenance, which greatly reduces maintenance and inspection workload. Contact us to get the best SF6 switchgear solution to your project.