Medium Voltage Equipment

FLN36 SF6 Load Break Switch

Product ID：Medium Voltage Equipment
Whatsapp & Wechat：+8613868719385
Phone: +8613868719385
Tel: +86 577 27880251
E-mail: info@cyawit.com
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FLN36 indoor SF6 load switch provides switching, isolation and earthing for 12, 24 and 40.5 kV systems. Its compact three-position design, spring mechanism and optional fuse combination support reliable control and transformer protection in ring networks.

Ratings	Unit	Value
Rated Voltage	kV	12	24	40.5
Rated Lightning Impulse Withstand VoltageCommon Value	kV	75	125	170
Across the Isolating Distance	kV	85	145	195
Rated Short-Duration Power-Frequency Withstand VoltageCommon Value	kV	28	50	70
Across the Isolating Distance	kV	32	60	80
Rated Frequency	Hz	50/60	50/60	50/60
Rated Current Ir	A	630	630	630
Rated Short-Time Withstand Current	kA	25	20	20
Rated Duration of Short Circuit	s	2	3	3
Rated Peak Withstand Current	kA	62.5	50	50
Pole Distance	mm	200, 210	210, 250, 275	350
Making and Breaking Tests (IEC 60265-1) for FLN36 Switch
Mainly Active Load Current	A	630	630	630
Closed-Loop Distribution Circuit Current	A	630	630	630
Cable Charging Current	A	50 and 10	50 and 10	50 and 10
Line Charging Current	A	20	20	20
Cable and Line Charging Current Under Earth Faults	A	87	87	87
Short-Circuit Making Current	kA	62.5	50	50
Making and Breaking Tests (IEC 60420) for FRLN36 Switch-Fuse Combination
Withstand and Switch-On Cut-Off Current of the Fuse	kA	25	20	20
Breaking Test with Fuse Pre-Arcing Time	/	OK	OK	OK
Breaking Capacity at Rated Transfer Current	A	1530	920	630
Mechanical Performance
Mechanical Endurance of Switch Close/Open	Ns	1000
Mechanical Endurance of Switch Open/Earth	Ns	1000
Ambient Temperature
Maximum Value	°C	55
Maximum Value of 24 h Mean	°C	55
Minimum Value	°C	-15
Altitude Above Sea Level	m	≤1800