LW 39-126/T 3150-31.5, 40 Outdoor HV AC SF6 Circuit Breaker Made in China - Suppliers and Manufacturers

Product Description

1.Introduction of LW 39-126/T 3150-31.5, 40 Outdoor HV AC SF6 Circuit Breaker

LW 39-126/T 3150-31.5, 40 Outdoor HV AC SF6 Circuit Breaker is equipped with CT type spring operation mechanism and three phase mechanical linkage operation.
LW 39-126/T 3150-31.5, 40 Outdoor HV AC SF6 Circuit Breaker Breaker is filled with SF6 gas with well arc-extinguishing and electric insulation performance. Double-circle O type seal ring is used for preventing leakage effectively.

2. Parameter (Specification) of LW 39-126/T 3150-31.5, 40 Outdoor HV AC SF6 Circuit Breaker

Mechanical parameters of circuit breaker

Table 1

No.	Items	Unit	Parameters
1	System nominal voltage	kV	110
2	Rated voltage	kV	126
3	Rated frequency	Hz	50
4	Rated current	A	3150
5	Rated short-circuit breaking current	kA	31.5	40
6	Rated short-circuit making current	kA	80	100
7	Rated short time withstand current/time	kA/s	31.5/4	40/3
8	Rated peak withstand current	kA	80	100
9	First-pole-to-clear factor		1.5
10	Lightning impulse withstand voltage	kV	650
11	1min power frequency withstand voltage	kV	275
12	Creepage distance fracture/to earth	cm/kV	250/250
13	Rated operation order		O-0.3s-CO -180s-CO
14	Making time	ms	≤110
15	Breaking time	ms	≤65
16	Closing-opening time	ms	≤100
17	Closing non-simultaneity	ms	≤5
18	Opening non-simultaneity	ms	≤3
19	Fracture no of per pole	piece	1
20	Mechanical endurance	time	10000
21	SF6 gas pressure Rated value (20℃) Alarm value The lowest function pressure	MPa MPa MPa	0.55 0.50 0.45	0.60 0.55 0.50

23	SF6 moisture content	ppm(V/V)	≤150
24	SF6 yearly air leakage percentage		≤1%
25	Per set circuit-breaker SF6 gas charging weight	kg	9	11
26	Gross weight of per set circuit-breaker	kg	2200
27	Sub-static pull on wiring longitudinal terminal of circuit-breaker horizontal vertical	N N N	1250 750 1000
28	Voltage of auxiliary circuit	V	AC220
29	Opening-closing coil rated voltage rated current	V A	DC220 or DC110 1.29
30	Energy Storage motor rated voltage rated power	V W	AC220 or DC 220 700
31	Energy storage time	s	≤15
32	Heater voltage power	V W	AC220 100
33	Standards		GB1984

Mechanical parameters of circuit breaker

Table 2

No.	Name	Unit	Parameters
1	Contact travel of moving-contact	mm	38~42
2	Main drive lever travel of mechanism	mm	113~118
3	Distance between opening movable and static contact	mm	75~80

3. Service condition of LW 39-126/T 3150-31.5, 40 Outdoor HV AC SF6 Circuit Breaker

Altitude       ≤ 3000m
Ambient temperature       -35℃~+40℃
Wind speed       ≤35m/s
Daily temperature difference       ≤25℃
Sunlight temperature       0.1w/cm²
Relative humidity       Average (monthly): ≤ 90%
Average (daily):       ≤ 95%
Ice thickness       ≤ 10mm
Earthquake       ≤ 9 °
Pollution grade       III

4. Transport：

LW 39-126/T 3150-31.5, 40 Outdoor HV AC SF6 Circuit Breaker is separated into two packages for convenience of transport, one is three-pole arc-extinguishing chamber and another is base frame. (Cabinet frame and mechanism box is included).
To ensure product quality, each pole of the circuit breaker is filled with SF6 gas of 0.02 ± 0.01MPa in transport and storage, so valve of each pole can not be opened.
As porcelain piece is brittle materials, so in assembly & disassembly and transport, please be careful specially to prevent collisions