12kv/24kv SF6 load break switch

Specifications Indoor sf6 Load Break Switch

1.Siemens cooperative partener

2.ISO9000 Certificate

3.30 years manufacture

Description FLN36 Indoor Load Break Switch protect electric device and control it.The protection features of Fuse series electricity match with Transformer,which is applicable to loop net power supply unit. It, a kind of rotate load switch of double cracks using air SF6 as isolation and extinguishing medium,applies to the usage of power distribution system of 24kv. Every switch is permanently sealed after charging 0.4bar of the air SF6.It doesmt matter if switch is installed vertically or horizontally. The typical installation inside RMU is the way to install steel lattice between  cable chamber and bus room. This  method separate bus and cable joint ,which  matches with the strictest demands operting. If circuit error happens that makes exaggerate current so that switch inside fires inside, there is a structural weak spot,which would be pushed and then  the gate over the switch will open to lead the air out.   Using environmental conditions , a.      ambient air temperature, upper limit+40, lower-15 b.     daily average level   less than 35 c.     daily average level of relative temperature should less than 95%,monthly average level    should less than 90%  d.     daily average vapour tension less than  2.2×10-3Mpa,monthly less than 1.8×10-3MPa e.      elevation,<1000m  f.      Amplitude, The earthquake intensity does not exceed  8 degrees g.      no water ,frost,condensation, or danger of flammability&explosion,no chamistry rusty or violent exercise   Technical Data

Item		Unit	FLN36-12D	FLRN36-12D
Rated voltage		kV	12	12
Rated current		A	630	125
Rated frequency		Hz	50	50
Rated short-time withstand current of switch/rated continuous time of short-circuit		kA/s	20/3
Rated short-time withstand current of earthing switch/rated continuous time of short-circuit		kA/s	20/2
Rated peak withstand current and rated short-circuit making current		kA	50	125 (anticipated)
Rated breaking current	Breaking current of active load	A	630
	Breaking current of closed loop	A	630
	5% rated breaking current of active load	A	31.5
	Cable-charging breaking current	A	10
	Breaking capacity of no-load transformer	kVA	1250	1250
	Breaking transfer current	A		1700
	Prospective short-circuit breaking current	kA		50
Rated insulation level	1 min power frequecny withstand voltage, phase-to-phase, to earth/break	kV	42/48	42/48
	Lighting impulse withstand voltage, phase-to-phase, to earth/break	kV	75/85	75/85
Mechanical life			2000	2000
Rated pressure of SF6 gas (gauge pressure at 20°C)		Mpa	0.04~0.05	0.04~0.05

 
 
 

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