General
LW36-126/T3150-40 HV AC SF6 circuit breaker is an outdoor product. It is used inelectricity grids with altitudes of no more than 2000m (product designs for 3000m are available), environment temperauteres of no less than -30oC, local pollution classes of no more than Class iV, and maximum voltage of 126kV to cut off rated currents, fault currents, or switching lines in order to implement control and protection of electricity systems. It can also be used as a connection circuit breaker.
Technical Data

Serial No.	Name	Unit	Value
1	Ambient temperature	oC	-50oC-40oC
2	Rated voltage		126
3	Rated power frequency withstand voltage (1min)
3.1	To earth	kV	230
3.2	Across open contact	kV	230+73
4	Rated lightning impulse withstand voltage
4.1	To earth	kV	550
4.2	Across open contact	kV	550+103
5	Rated frequency	Hz	50
6	Rated value	A	3150
7	First pole to clear factor		1.5
8	Rated short-circuit breakering current (Isc)	kA	40
9	Rated short-circuit making current (peak)	kA	100/104
10	Rated hsort-time withstand current	kA	40
11	Rated peak withstand current	kA	100/104
12	Rated duration of short-circuit	s	4
13	Rated out of phase breaking current	kA	10
14	Short-line fault breaking current	kA	90%Isc,75Isc
15	Rated line charging breaking current	A	31.5
16	Rated operating sequence		o-0.3s-CO-180s-CO
17	Resistance of main contact	μΩ	≤35
18	Rated SF6 gas pressure (20oC gauge pressure)	Mpa	0.6 (or SF6+CF4) 50Hz
19	Alarm/ minimum functional pressure (20oC gauge pressure)	Mpa	0.55/0.50 50Hz
20	Annual leakage of SF6 gas	%	≤0.5
21	Gas humidity content (L/L) (20oC at handover)	L/L	≤150x10-6
22	Mechanical endurance	Times	10000
23	Radio interference level	mv	≤500
24	Creepage distance	mm	3906
25	Weight of SF6 gas filled for each CB	kg	8
26	Weight of one set of CB	kg	1700