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Ningbo Ville Electric Co., Ltd.

Circuit Breaker, Circuit Breakers, Vacuum Circuit Breaker manufacturer / supplier in China, offering Sf6 Hv Outdoor Circuit Breaker, 12.5mva Sz11 Series 35kv Power Transformer with on Load Tap Changer, Lw58-252/T4000-50 High Voltage Sf6 Circuit Breaker and so on.

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Supplier Homepage Product High Voltage Circuit Breaker Sf6 Hv Outdoor Circuit Breaker

Sf6 Hv Outdoor Circuit Breaker

FOB Price: Get Latest Price
Min. Order: 1 Piece
Production Capacity: 50000 Sets/Year
Transport Package: Wooden Case or as Per Requirement
Payment Terms: L/C, T/T, D/P, Western Union

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Basic Info
  • Model NO.: LW3-12 I. II
  • Operation: Electric Type
  • Arc-extinguishing Medium: SF6
  • Structure: MCB
  • Certification: VDE, ISO9001-2000, CE, UL, CB, CCC
  • Specification: IEC CE, ISO
  • HS Code: 8
  • Breaking Capacity: High Voltage Circuit Breakers
  • Speed: High-Speed Circuit Breaker
  • Installation: Fixed
  • Poles Number: 3
  • Trademark: VILLE
  • Origin: Ningbo China
Product Description
LW3-12 I. II SF6 HV outdoor circuit breaker is a new type product that SF6 is taken for insulating and arc extinguishing. The arc-chute consists of a breaker and an operative mechanism, using rotating arc principle. Compared with the 10KV series outdoor breakers, this kind of product has obvious advantages, such as a simple structure, the higher reliability of insulating and arc extinguishing, a lower operative power, and a higher rated parameter, a longer electrical service life, a long maintenance free duration, and so on.
This kind of product can be divided into two types: Type I and Type II. The main difference is that, type I is fitted with a kind of manual energy -storage mechanism operated by spring, mainly used on the pillar, and type II is equipped with motor-driven energy -storage mechanism operated by spring which not only can be operated by hand directly or be controlled remote, but also can do coincide automatically, mainly used in the mini-medium substation for protecting and controlling.
NO Name Unit Data
1 Rated voltage KV 12
2 Rated insulating level (the pressure of SF6 in the breaker is 0.25Mpa, the temperature is 20 ) Lightning impulse withstand voltage
(full wave)
KV 75
Rated 1min power frequency withstand voltage 42
The voltage withstand test under the condition of raining 34
3 The insulating level under zero pressure
(the pressure on the highest phase is 5min)
KV 9
4 Rated current A 400 630
5 Rated short-circuit breaking current KA 6.3 8 12.5
6 The breaking current under  zero pressure of t A 400 630
7 Rated short-circuit breaking times Times 20
8 Rated operative sequence Type I   Off-180s-on/off-
180s- on/off
Type II Off -0.5s- on/off -
180s- on/off
9 Rated short-circuit breaking current (peak value) KA 16 20 31.5
10 Rated peak withstand current (peak value) KA 16 20 31.5
11 Rated short-time withstand time S 4
12 Rated short-time withstand current KA 6.3 8 12.5
13 Rated operating pressure M Pa 0.35
14 The lowest operating pressure M Pa 0.25
15 Annual leak rate & < =1
16 Mechanical Endurance Times 2000
17 Weight Type I Kg 122
Type II 130
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