LW36-145 Outdoor High Voltage Porcelain Column SF6 Circuit Breaker is an outdoor three-pole outdoor type. It adopts self-charging spring operating mechanism. It has high disconnection capacity, low switching overvoltage, non-reignition capacitor switch, high operating reliability, low maintenance requirements, and can withstand earthquake stress/magnitude up to 7 on the Richter scale.

We can provide the other model sf6 circuit breaker ,such as LW25-126 Outdoor High Voltage Porcelain SF6 Circuit Breaker,LTZ-40.5 Indoor High Voltage SF6 Circuit Breaker and LW9-72.5 Outdoor High Voltage Porcelain SF6 Circuit Breaker,welcome to inquiry .

Advanced Manufacturing and Production
We operate one of the most advanced and standardized assembly line manufacturing facilities in the industry, equipped with the latest technology, enabling us to produce a wide range of high quality electrical products with precision and efficiency. Wecomply with GB 1984-2024 and GB/T11022-2020 standards to ensure the highest quality. Our commitment to excellence is reflected in the durability, reliability, and compatibility of our products.

our workshop

Product Specifications

Standard technical parameters table

No.	Name		Unit	Standard technical parameter values	Guarantee Value
1	Vacuum circuit Type			Porcelain Column	Porcelain Column
2	Number of breaks		Piece	1	1
3	Rated voltage		kV	145	145
4	Rated frequency		Hz	50	50
5	Rated current		A	2000	2000
6	Main circuit resistance		mW	≤40	≤40
7	Temperature rise test current		A	1.1I_r	1.1I_r
8	Rated power frequency withstand voltage/1min	Across the contact gaps	kV	230+70	230+70
	Rated power frequency withstand voltage/1min	To ground	kV	230	230
	Rated lightning impulse withstand voltage (1.2/50ms) peak	Across the contact gaps	kV	550+100	550+100
	Rated lightning impulse withstand voltage (1.2/50ms) peak	To ground	kV	550+100	550+100
9	Rated short-circuit breaking current	AC component effective value	kA	40	40
		Time constant	ms	45	45
		Break times	Times	≥20	≥20
		Prime Minister breaking coefficient		1.5	1.5
10	Rated short circuit making current		A	100	100
11	Rated short-time withstand current and duration		kA/s	40/3	40/3
12	Rated withstand current (peak)		kA	31.5/40	31.5/40
13	Breaking time		ms	≤60	≤60
14	Closing and Opening Time		ms	≥80	≥80
15	openning time (lower limit provided by the manufacturer)		ms	≤40	≤40
16	closing time (lower limit provided by the manufacturer)		ms	≤120	≤120
17	Reclosing current-free gap time		ms	300及以上可调	300及以上可调
18	Average opening speed		m/s	5±0.5	5.0±0.5
19	Average closeing speed		m/s	3±0.5	3.0±0.5
20	NO -Simultaneity of Opening operations		OP	≤2	≤2
21	NO -Simultaneity of Closing operations		ms	≤3	≤3
22	Mechanical stability		次	≥10000	≥10000
23	Rated operating sequence			O–0.3s–CO–180s–CO	O–0.3s–CO–180s–CO
24	Auxiliary and control circuit short-time power frequency withstand voltage		kV	2	2
25	Radio interference voltage		uV	≤500	≤500
26	Noise Level		dB	≤110	≤110
27	On-site opening and closing of no-load transformer test	No-load transformer capacity	MVA	50	50
		No-load excitation current	A	0.5～15	0.5～15
		Test voltage	kV	126	126
		Operating sequence		10×O and 10×CO	10×O and 10×CO
28	On-site opening and closing of no-load line charging Current test	Test current	A	Determined by the actual line length	Determined by the actual line length
		Test voltage	kV	126	126
		Test conditions		In principle, the line shall not have pressure relief equipment, such as reactors, lightning arresters, electromagnetic voltage transformers, etc.	In principle, the line shall not have pressure relief equipment, such as reactors, lightning arresters, electromagnetic voltage transformers, etc.
		Operating sequence		10×(O–0.3s–CO)	10×(O–0.3s–CO)
29	Capacitive current switching test (laboratory)	Test current	A	Line: 31.5; Cable: 140	Line: 31.5; Cable: 140
		Test voltage	kV	1.4×126/	1.4×126/
		C1 Grade：LC1 and CC1：24×O, LC2 and CC2：24×CO C2 Grade ：LC1 and CC1：48×O, LC2 and CC2：24×O and 24×CO		C1 Grade /C2 Grade	C1
30	Switching capability under local fault conditions	L90	kA	36	36
		L75	kA	30	30
		L60	kA	24 (When the minimum arcing time of L75 is longer than the minimum arcing time of L90 by 5ms)	24 (When the minimum arcing time of L75 is longer than the minimum arcing time of L90 by 5ms)
		Operating sequence		O–0.3s–CO–180s–CO	O–0.3s–CO–180s–CO
31	Out-of-step closing and opening test	Breaking current	kA	10	10
		Power frequency recovery voltage	kV	2.5×126/	2.5×126/
		Operating sequence		方式1：CO-O-O: 方式2：O-O-O	方式1：CO-O-O: 方式2：O-O-O
32	Different-phase ground fault interruption test	Test current	kA	34.6	34.6
		Test voltage	kV	126	126
		Operating sequence		O–0.3s–CO–180s–CO	O–0.3s–CO–180s–CO
33	SF6 gas pressure (gauge pressure at 20℃)	Highest	MPa	0.6	0.6
		Rated		0.6	0.6
		Minimum (Latched)		0.5	0.5
34	SF6 gas humidity	Handover acceptance value	mL/L	≤150	≤150
34	SF6 gas humidity	Long-term operation allowable value	mL/L	≤300	≤300
35	SF6 gas leakage rate		Year	≤0.5％	≤0.5％
36	SF 6 gas purity			99.9%	99.9%
37	Operating mechanism type or model			Spring	Spring
	Operation mode			Three-phase mechanical linkage	Three-phase mechanical linkage
	Motor voltage		V	AC220 or AC380	AC380
	Closing operation power supply	Rated Operating voltage	V	DC110or DC220	DC220
		Allowable operating voltage range		Reliable operation within the range of 85% to 110% rated operating voltage, no operation when the rated voltage is less than 30%	Reliable operation within the range of 85% to 110% rated operating voltage, no operation when the rated voltage is less than 30%
		Number of coils per phase	pcs	1	1
		Steady-state current per coil	A	DC110,5A/DC220V,2.0A	DC220V,2.A
	Opening operation power supply	Opening operation power supply Rated operating voltage	V	DC110/DC220	DC220
		Operating voltage allowable range		65%～120%,30％ No action allowed	65%～120%,30％ No action allowed
		Number of coils per phase	Piece	1	1
		Steady-state current per coil	A	DC110,5A/DC220V,2A	DC220V,2A
	Heater	Voltage	V	AC 220	AC 220
	Heater	Power per phase	W	100	100
	Spare auxiliary contacts	Quantity	A	Each 10	Each 10
	Spare auxiliary contacts	Breaking capacity Energy storage time Mass of each phase operating mechanism		DC110,5A/DC220V,2.5A	DC110,5A/DC220V,2.5A
	Maintenance cycle of the main body		Year	≥20	≥20
	Spring mechnism	Storage energy time	s	≤20	≤20
38	Phase distance of circuit breaker		mm	1700	1700
39	The quality of the vacuum circuit breaker	Total mass of circuit breaker including auxiliary equipment	kg	1300	1300
		Mass of each phase operating mechanism transportation height	kg	350	350
		Mass of each phase SF6 gas	kg	10	10
		Total transportation mass Circuit breaker	kg	1400	1400
40	casing	Creepage distance (to ground/Across the contact gaps	mm	3900 (When 500mm≥average diameter≥ 300mm, multiply by 1.1; when average diameter＞500mm, multiply by 1.2)	3900 (When 500mm≥average diameter≥ 300mm, multiply by 1.1; when average diameter＞500mm, multiply by 1.2)
		Dry arc distance	mm	≥900	≥900
		S/P		≥0.9	≥0.9
41	Terminal static load	Horizontal longitudinal Safety factor	N	1250	1250
		Horizontal transverse		750	750
		Vertical		1000	1000
		Safety factor		Static 2.75, dynamic 1.7	Static 2.75, dynamic 1.7

Operating environment

Altitude:

≤1000M

Monthly average humidity:

≤90%

Maximum wind speed:

≤35M/s

Pollution level:

Level III.Level IV

Ambient temperature:

-20℃-50℃

Maximum daily temperature difference:

25K

Seismic fortification intensity:

7 degrees

Maximum ice thickness:

10mm

Maximum sunshine intensity:

1000W/m²

Product compliance standard:

GB/T1984-2014

Product Advantages

LW36-145 Outdoor High Voltage Porcelain Column SF6 Circuit Breaker has many advantages

Superior breaking capacity:

When the excitation current is cut, the overvoltage is less than 2 times the operating voltage, and when the charging current is cut, there is no re-breakdown and re-ignition phenomenon;
Each pole should be installed on a common circuit breaker base.The pole should be filled with SF6 gas for arc extinguishing and sufficient mechanical and electrical safety factors.sufficient mechanical and electrical safety factors.sufficient mechanical and electrical safety factors.insulation. The design of the arc extinguishing mechanism ensures that all its components have sufficient mechanical and electrical safety factors.
Reliable insulation:

The characteristics of SF6 gas do not change over time, and at the same time, the insulating parts and conductive parts in the gas are protected from oxidation, ensuring the temperature operation of the product;

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Product Outline Drawing

LW36-145 Outdoor High Voltage Porcelain Column SF6 Circuit Breaker supplier

Shaanxi West Power Tongzhong Electrical Co., Ltd.

Among many offerings, our core product - VTZ Series Vacuum Circuit Breakers stand out for their exceptional quality and performance. Maintenance-free and with a service life of up to 20 years, these products set a new standard in the industry and are known for their simple structure, high reliability, low power consumption and long service life. Meeting and exceeding global standards, They are extensively exported to Central Asia, Southeast Asia, South America, Europe, and other regions.

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