LW3-12 series sulfur hexafluoride circuit breaker-[Quotation-data]--Shanghai Huabang Industrial Business-www.91way.com

Product name：

LW3-12 series sulfur hexafluoride circuit breaker

specification：

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Category：

High voltage electrical appliances -- SF6 gas circuit breaker

Price：

factory price

Brand：

Shanghai

Place of Origin：

China

Available Quantity：

batch

delivery cycle：

Spot goods (or inquire by telephone)

Shanghai Beiyuan Industry and Trade Co.,Ltd
+86-21-66770508
+86-139101609058

91way@163.com
13916500500(Wechat)

LW3-12 series sulfur hexafluoride circuit breakerDetailed product description：

1. Overview
The LW3-12 series sulfur hexafluoride circuit breaker is a column mounted circuit breaker that uses SF6 gas as the arc extinguishing and insulation medium. It is currently a replacement product promoted and used in urban and rural power grids. Its excellent performance price ratio is incomparable to other 12KV outdoor circuit breakers.
The LW3-12 series sulfur hexafluoride circuit breaker is developed by our company in strict accordance with GB1984-89 "AC High Voltage Circuit Breaker". Its electrical and mechanical performance meets the requirements of DL402-91 "Technical Conditions for Ordering AC High Voltage Circuit Breakers" and GB11022-89 "General Technical Conditions for High Voltage Switchgear". Suitable for use as control and protection switches in small and medium-sized power stations and branch lines in power systems with a rated voltage of 12KV and a rated frequency of 50Hz.
2. Characteristics
Three level shared box, simple structure, compact layout
The power output is rotary, with good sealing effect.
The small mass of motion within the body reduces operational effort and improves mechanical lifespan.
The application of rotating arc technology has improved arc extinguishing efficiency and electrical lifespan.
The independence of the ontology structure can lead to products with different performance and installation methods.
Compared with vacuum and oil circuit breakers, it has significant advantages in structure, weight, safety, electrical strength, electrical life, maintenance, and cost.
Special arrangements and configurations of different transformer ratios for protection and measurement transformers can be made according to user needs.

3. Main technical parameters of LW3-12 series sulfur hexafluoride circuit breaker

serial number	Project Name			parameter				remark
one	Rated voltage (KV)			twelve
two	Rated current (A)			four hundred		six hundred and thirty
three	Rated frequency (Hz)			fifty
four	Rated insulation level (KV)	1-minute power frequency withstand voltage (effective value)	dry-type	42 (to ground, between levels, between fractures)				The circuit breaker is filled with 0.25MPa sulfur hexafluoride gas (20 ℃)
			wet type	34 (for ground, inter level, and inter fracture)
		Lightning impulse durability withstand voltage (peak value)		75 (for ground, inter level, and inter fracture)
five	Rated line voltage of insulation level under zero gauge pressure (KV)			115 (conductive circuit to ground)
six	Rated short-time withstand current (KA)			8 125		16 20
seven	Rated peak withstand current (KA)			twenty	three hundred and fifteen	forty	fifty
eight	Rated short-circuit duration (s)			four
nine	Rated short-circuit breaking current (KA)			eight	one hundred and twenty-five	sixteen
ten	Rated breaking current of asynchronous grounding (KA)			seven	one hundred and nine	one hundred and thirty-nine	one hundred and seventy-three
eleven	Rated short-circuit closing current (peak) (KA)			twenty	three hundred and twenty-five	forty	fifty
twelve	Number of consecutive rated short-circuit current disconnections (times)			sixteen
thirteen	Breaking current under zero gauge pressure (A)			four hundred			six hundred and thirty
fourteen	Rated operating sequence		Type I	Fen-180S-HeFen-180S-HeFen
			II. Type III	Fen-0.5S-180S-Fen
fifteen	Recloser no current time (S)			zero point five
sixteen	Unified time (S)			≤0.08
seventeen	Rated pressure of sulfur hexafluoride gas (MPa)			zero point three five				20℃
eighteen	Minimum working pressure of sulfur hexafluoride gas (MPa)			zero point two five				20℃
nineteen	Closing time (S)		Type I	≤0.06
			II. Type III	≤0.08
twenty	Opening time (S)		Type I	≤0.06
			II. Type III	≤0.04
twenty-one	Mechanical durability (times)			three hundred
twenty-two	Moisture content of sulfur hexafluoride gas in circuit breaker (ppm)			≤ 150/300/factory/operation				volume ratio
twenty-three	Annual gas leakage rate of sulfur hexafluoride			＜1%
twenty-four	Rated voltage of opening and closing coils and energy storage motors (V)			a、c、 220 or d, c, 220				User confirmed
twenty-five	Current ratio of current transformer (A/A)			200/5； 400/5； 600/5 (regular)				User confirmed
twenty-six	Noise level (dB)			＜110
twenty-seven	Weight of sulfur hexafluoride gas used for each disconnector (Kg)							twelve
twenty-eight	Total weight of circuit breaker (Kg)		Type I	one hundred and forty
			II. Type III	150, 160
twenty-nine	External dimensions, (L × D × H)		Level III pollution	1100×780×620				Including institutions

4、 Usage environment
[1] Altitude: ≤ 1000m.
[2] Environmental temperature: -40 ℃ to+40 ℃.
[3] Pollution level: Level III and IV (25mm/kV, 31mm/kV).
[4] Earthquake intensity: not exceeding 8 degrees.
[5] Wind pressure: not exceeding 700Pa (equivalent to 34m/s).
[6] Installation location: A place without fire, explosion hazards, serious pollution, chemical corrosion, and severe vibration.

5、 LW3-12 series sulfur hexafluoride circuit breaker appearance and installation dimensions

LW3-12 series sulfur hexafluoride circuit breaker

LW3-12 series sulfur hexafluoride circuit breaker（schematic diagram）