Gold Member Since 2016
NANJING YUMANY IMP & EXP CO., LTD

Vacuum, High Voltage Switch, Breaker manufacturer / supplier in China, offering Outdoor High Voltage Sf6 Sulfur Hexafluoride Circuit Breakers (LW8-40.5), New Wiring Diagram Household AC Contactor (WTC-63A 2P), Domestic Contactor Ict DIN Rail Modular Contactor (WCT-63A 3P) and so on.

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Supplier Homepage Product HV electric Outdoor High Voltage Sf6 Sulfur Hexafluoride Circuit Breakers (LW8-40.5)

Outdoor High Voltage Sf6 Sulfur Hexafluoride Circuit Breakers (LW8-40.5)

FOB Price: US $3,680-5,858 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $3,680-5,858/ Piece
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Port: Ningbo, China
Production Capacity: 9000pieces/Year
Payment Terms: L/C, T/T, D/P, Western Union

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Basic Info
  • Model NO.: LW8-40.5
  • Operation: Electric Type
  • Arc-extinguishing Medium: SF6
  • Poles Number: 3
  • Function: Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
  • OEM or ODM: Accepted
  • Origin: China
  • Breaking Capacity: High Voltage Circuit Breakers
  • Speed: Normal Type Circuit Breaker
  • Installation: Fixed
  • Type: Circuit Breaker
  • Certification: ISO9001-2000, CE, CB, CCC
  • Transport Package: Standard Export Package
  • HS Code: 85351000
Product Description

Lw8-40.5 Series Outdoor High Voltage Sf6Circuit Breakers
1.Professional Manufacture of China
2.Multi protection functions
3.CE,FCC,LVD&ROHS reports
Product Description
The LW8A-40.5(W)T2000-31.5 outdoor type SF6 breaker finds its universal range of applications for the three-phases electrical system with alternating current 50HZ and rated voltage 40.5kv. It is used for controlling and protecting the electrical system and measuring the current transformers. 
Specifications
1. Insulation and reliable 
2. High mechanical reliability, 
3. Electrical circuit breaker

LW8-40.5 type outdoor high-pressure sulfur hexafluoride circuit breaker is three-pole ac 50 hz, outdoor high voltage switch equipment, applicable to 40.5 kV power transmission and distribution system control and protection, can also be used to contact circuit breaker and movable capacitor group. LW8-40.5 type circuit breaker with CT14 type spring operation mechanism. Accord with national standard GB1984-89 ac high voltage circuit breaker, and the international electrotechnical commission standard IEC56 publications of high voltage circuit breaker. 

Feature advantages
1, open circuit performance is good, short arc time and current life is long, continuous open 31.5 kA short circuit current at rated voltage 21 times don't repair, do not replace the sulfur hexafluoride gas; 
2, insulation and reliable; 
3, high mechanical reliability, frequent operation; 
4, movable capacitor current is 400 a group without renewed; 
5, simple structure, small volume, no maintenance cycle is long; 
itemunitdata
rated voltagekV40.5
Lightning impulse withstand voltagekV185 / 215
Power frequency withstand voltage(1min)kV95 / 118
rated currentA2000
mechanical lifetime3000
Sf6 gas rated pressure(20°C)MPa0.45
Closure pressure(20°C)MPa0.40
Rated short circuit breaking currentkA31.5
Rated short circuit making current(peak)kA80
Rated short circuit withstand currentkA31.5
Rated peak withstand currentkA80
rated out-of-phase breaking current
 
kA7.9
rated duration of short-circuit
 
s4
closing time
(Under rated operating voltage)
ms≤100
opening time
(Under rated operating voltage
)
ms≤60
close-open time
 
ms≥130
Rated operating sequence
 
 open-0.3s-close-open-180s-close-open
The rated current opening and closing a single capacitor group
 
A400
Accumulative breaking times of rated short circuit on power flowtime21
yearly gas leakage rate
 
%≤0.3
Sf6 gas water content(20°C)ppm(v/v)≤150
 
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