LW8A-40.5 outdoor high-voltage sulfur hexafluoride circuit breakerDetailed product description：

The LW8A-40.5 outdoor high-voltage sulfur hexafluoride circuit breaker is a three-phase AC 50Hz outdoor high-voltage electrical equipment; Suitable for control and protection of 40.5kV power transmission and distribution systems; It can also be used for connecting circuit breakers and opening and closing capacitor banks; And it can be equipped with a current transformer for measurement and protection purposes. LW8-40.5 circuit breaker is equipped with CT14 spring operated mechanism. The circuit breaker complies with the requirements of the national standard GB1984-1989 "AC High Voltage Circuit Breaker" and the International Electrotechnical Commission standard IEC60056:1987 "High Voltage AC Circuit Breaker". The main characteristics of a circuit breaker are excellent breaking performance, using a compressed air arc extinguishing chamber, short arc ignition time, long electrical life, and continuous breaking of 25 kA for 20 times without maintenance or replacement of sulfur hexafluoride gas at rated voltage; Reliable insulation, high mechanical reliability, strong closing ability, and the ability to operate frequently; Switching capacitor bank current of 400A without reignition; Cut the empty long line for 25 and 50 kilometers without reignition; Simple structure, small size, and long maintenance cycle.

2. Environmental conditions for use:
Altitude: not exceeding 2500; Rice; Plateau type 4000 meters; Environmental temperature: -30 ℃ -+40 ℃ (special requirement -40 ℃ -+40 ℃); Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90% (25 ℃); Wind speed: not exceeding 35 meters per second; The pollution level is level III; The porcelain sleeve has a creepage distance of 1050mm (1320mm) (nominal creepage distance not less than 25mm/kV). Sunshine: 0.1w/cm2; Ice cover: 10mm (MAX) Earthquake conditions: vertical acceleration of 0.3g; horizontal acceleration of 0.15g (MAX) in environments without flammable substances, explosion hazards, chemical corrosion, and severe vibrations.

Main technical parameters of LW8A-40.5 outdoor high-voltage sulfur hexafluoride circuit breaker

serial number	Name		unit	Data
one	rated voltage		kV	forty point five
two	maximum voltage		kV	forty point five
three	Rated Absolute Edge level	Lightning impulse withstand voltage (full wave peak value)	kV	200 */215 (fracture) Note: Standardized 185 kV
		Power frequency withstand voltage (1 minute)	kV	95/118 (fracture surface)
four	rated current		A	1600/2000		1600/2000/2500/3150
five	mechanical life		time	five thousand
six	Rated pressure of SF6 (gauge pressure at 20 ℃)		MPa	zero point four zero		zero point five zero
seven	Locking pressure (gauge pressure at 20 ℃)		MPa	zero point three		zero point four zero
eight	Maximum operating environment temperature		℃	-40		-30
nine	Rated short-circuit breaking current		kA	twenty	twenty-five	twenty-five	thirty-one point five
ten	Rated short-circuit closing current (peak)		kA	fifty	sixty-three	sixty-three	eighty
eleven	Rated short-time withstand current (thermal stability current)		kA	twenty	twenty-five	twenty-five	thirty-one point five
twelve	Rated peak withstand current (dynamic stability current)		kA	fifty	sixty-three	sixty-three	eighty
thirteen	Rated out of step breaking current		kA	five	six point three	six point three	eight
fourteen	Accumulated breaking times under rated short-circuit breaking current		time	twenty
fifteen	Rated short-circuit duration		S	four
sixteen	Closing time (at rated operating voltage)		S	≤0.1
seventeen	Opening time (at rated operating voltage)		S	≤0.06
eighteen	Rated operating sequence			Min-03s - Combination and Separation -180s - combined and separated
nineteen	Rated opening and closing current of a single capacitor bank		A	four hundred
twenty	Annual gas leakage rate		%/Year	≤1
twenty-one	Moisture content of sulfur hexafluoride gas (at 20 ℃)		uL/L	≤150
twenty-two	Rated operating voltage for CT14 type spring operated mechanism			AC/DC:380/220V/110V
	Voltage of closing coil and opening coil		V	Communication: 220 380 DC: 48 110 220
	Energy storage motor voltage		V	Communication: 220 DC: 220/110
twenty-three	Weight of sulfur hexafluoride gas		Kg	five
twenty-four	Weight of circuit breaker (including operating mechanism)		kg	one thousand

LW8A-40.5 Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker