SF6 self powered circuit breakerDetailed product description：

The LW35-245 self powered sulfur hexafluoride circuit breaker is an outdoor AC three pole 50Hz high-voltage transmission and transformation equipment, used for opening and closing rated current, fault current or conversion lines, to achieve protection, control and operation of the transmission and transformation system, and can perform opening, closing and fast automatic reclosing operations as well as three pole electrical linkage.
This circuit breaker adopts the latest design principles and has the characteristics of simple structure, small size, low consumables, low required operating energy, high reliability, easy installation, and low noise. It is a new generation of high-voltage sulfur hexafluoride circuit breaker developed and researched by our company.

Environmental conditions for use
Environmental temperature: -30 ℃ to+50 ℃.
Wind pressure: not exceeding 700pa.
Altitude: not exceeding 3000m.
Seismic intensity: not greater than 9 degrees.
Air pollution level: Level III.

Rated parameters of LW38-245 self powered SF6 circuit breaker
The rated parameters of circuit breakers and operating mechanisms are shown in Table 1.
Table 1 Rated Parameters of Circuit Breakers

serial number	name		Main technical parameters
one	Rated voltage kV		two hundred and twenty
two	Rated insulation level kV		See Table 2
three	Rated frequency Hz		fifty
four	Rated current A		three thousand one hundred and fifty
five	Rated short-circuit breaking current kA		forty
six	Rated short-time withstand current kA		forty
seven	Rated peak withstand current kA		one hundred
eight	Rated short-time duration s		three
nine	Rated short-circuit closing current (peak) kA		one hundred
ten	Near area fault breaking current kA		30/36
eleven	Rated line charging interruption current A		one hundred and twenty-five
twelve	Rated out of step breaking current kA		ten
thirteen	Accumulated breaking times under rated short-circuit breaking current (times)		sixteen
fourteen	First open pole factor		one point three
fifteen	SF6 gas pressure (20 ℃) MPa		See Table 3
sixteen	Rated voltage of control circuit and auxiliary circuit power supply		See Table 4
seventeen	Rated operating sequence		Min-0.3s HeFen-180s HeFen
eighteen	mechanical properties		See Table 5
nineteen	Main circuit resistance μ Ω		fifty
twenty	Mechanical durability of circuit breaker (times)		three thousand
twenty-one	Static tensile force of wiring terminals	Horizontal and Vertical FshA N	one thousand two hundred and fifty
		Horizontal and Horizontal FshB N	one thousand
		Vertical direction FtVm N	one thousand two hundred and fifty
twenty-two	Annual SF6 gas leakage rate		≤1%
twenty-three	SF6 gas moisture content (V/V) 10		≤150
twenty-four	Contact stroke (mm)		200-4(+4)
twenty-five	Contact stroke of contact (mm)		28-2(+4)