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

Prod Model:	LW8-40.5
OEM Or ODM:	Accepted
Breaking Capacity:	High Voltage Circuit Breakers
Operation:	Electric Type
Speed:	Normal Type Circuit Breaker
Arc-extinguishing Medium:	SF6
Installation:	Fixed
Poles Number:	3
Certification:	CCC

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; 

item	unit	data
rated voltage	kV	40.5
Lightning impulse withstand voltage	kV	185 / 215
Power frequency withstand voltage(1min)	kV	95 / 118
rated current	A	2000
mechanical life	time	3000
Sf6 gas rated pressure(20°C)	MPa	0.45
Closure pressure(20°C)	MPa	0.40
Rated short circuit breaking current	kA	31.5
Rated short circuit making current(peak)	kA	80
Rated short circuit withstand current	kA	31.5
Rated peak withstand current	kA	80
rated out-of-phase breaking current	kA	7.9
rated duration of short-circuit	s	4
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	A	400
Accumulative breaking times of rated short circuit on power flow	time	21
yearly gas leakage rate	%	≤0.3
Sf6 gas water content(20°C)	ppm(v/v)	≤150