40.5kv Outdoor High Voltage Sf6 Circuit Breaker Elevated Porcelain Column Structure

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Zhejiang Beidian Technology Co., Ltd.

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Profile Certified by SGS/BV
LW8-40.5
High Voltage Circuit Breakers
Electric Type
High-Speed Circuit Breaker
SF6
Fixed
ACB
1
Circuit Breaker
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
ISO9001-2000, CCC
Bdn
Zhe Jiang
3
2000 Times
4s
5-1600
Casting Insulation
BDN
Wooden Case
medium
China
853620
Product Description
 

General

AC HV SF6 breaker is kind of 3 phase AC 50HZ outdoor type breakers. The gas of the SF6 is employed as the arc-extinguishing medium and the dielectric material. It uses the structure of pneumatic arc-extinguishing chamber,and the breaking performance is excellent. It can be widely used in the electrical system whose rated voltage is 40.5kV to control the rated current and short-circuit current, connect the breaker and cut the current in capacitor banks. The current transformers inside are used for measuring and protecting the breaker. The LW8-40.5 breaker is the regenerate type of oil type breaker.
 

Service environment

  • Altitude :≤3000m.

  • Ambient temperature :-30ºC~+40ºC.

  • Pollution grade: Class II, Class III, Class IV.

  • Relative humidity: the daily average is not more than 95%, the monthly average is not more than 90%(25ºC).

  • Wind pressure: not more than 700Pa(equivalent to 34m/s).

  • There are no inflammable substances, explosion hazards, chemical corrosion and violent vibration.

 

Product Parameters

 
NameUnitData
Rated voltageKV40.5
Rated insulation levelWithstand voltage of 1min power frequencyKV95
Lightning shock resistance (peak)
Rated currentA185
Mechanical lifeTimes1600/2000
Rated pressure of sulfur hexafluoride (gauge pressure at 20C)Mpa3000
Locking pressure (gauge pressure at 20ºC)Mpa0.45
Minimum operating temperatureºC0.42
Rated short circuit breaking currentKA-30
Rated short circuit shut-off current (peak)KA20/25/31.5
Rated withstand current in short circuit (heat stable current)KA63/80
Rated peak withstand current (dynamic stable current)KA35/31.5/100
Rated out-of-step breaking currentKA63/80/100
Rated short circuit durationS4
Closing time (at rated operating voltage)S≤0.1
Switching time (at rated operating voltage)S≤0.07
Rated operating sequence 0-0.3-C0-180S-CO
Rated open and close current of a single capacitor bankA400
Weight of sulfur hexafluoride gasKg8/5
Weight of circuit breaker (including operating mechanism)Kg14000/1000

 

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