General
LW36-145/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 145kV 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		145
3	Rated power frequency withstand voltage (1min)
3.1	To earth	kV	275
3.2	Across open contact	kV	315
4	Rated lightning impulse withstand voltage
4.1	To earth	kV	650
4.2	Across open contact	kV	750
5	Rated frequency	Hz	50/60
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 0.7 60Hz
19	Alarm/ minimum functional pressure (20oC gauge pressure)	Mpa	0.55/0.50 50Hz 0.65/0.60 60Hz
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	4500
25	Weight of SF6 gas filled for each CB	kg	10
26	Weight of one set of CB	kg	1700