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LW16-40.5 SF6 Circuit Breaker
  • LW16-40.5 SF6 Circuit BreakerLW16-40.5 SF6 Circuit Breaker
  • LW16-40.5 SF6 Circuit BreakerLW16-40.5 SF6 Circuit Breaker
  • LW16-40.5 SF6 Circuit BreakerLW16-40.5 SF6 Circuit Breaker
  • LW16-40.5 SF6 Circuit BreakerLW16-40.5 SF6 Circuit Breaker
  • LW16-40.5 SF6 Circuit BreakerLW16-40.5 SF6 Circuit Breaker

LW16-40.5 SF6 Circuit Breaker

Item:LW16-40.5 SF6 Circuit Breaker
SF6 gas: Provides excellent arc extinguishing performance.
Compact and simple structure for easy installation and space-saving.
Smooth operation: Good opening performance with balanced operation.
Sealed design: Low operational noise.
Low maintenance: Reduced inspection and maintenance workload.

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Product Description

Item:LW16-40.5 SF6 Circuit Breaker

TheLW16-40.5 SF6 Circuit Breaker is designed for frequent operation and can be used as:

· Atie circuit breaker.

· Acircuit breaker for closing capacitor banks and reactor banks.

It features a built-incurrent transformer for measurement and protection. The LW16-40.5 can directly replace theSW2-35 oil-less circuit breaker and, with filter brackets, can also replace various types of multi-oil circuit breakers. It is the idealoil-free circuit breaker for35kV power systems.

Model Description

Main Technical Parameters

No. ltem Unit Data
1 Rated voltage kV 40.5
Rated insulation
level
Lightning impoct withstand voltage (full crest valuel kv 185
Power frequency withstand voltage(Imin) kV 95
2 Rated current A 1600 2000
3 Mechanical life 次fime 3000
4 Rated pressure of sulphur hexafluoride gas lgauge pressure at 20℃) MPA 0.50
5 Alarm pressure/minimum functional pressure (gauge pressure at 20℃) MPA 0.47/0.45
6
7
Rated short circuit switching current kA 25 31.5
Rated short-circuit closing current(peak) KA 63 80
8 Rated Short-Time withstand current (thermal stable current) kA 25 31.5
9 Rated Short-Time withstand current (thermal stable current) kA 60 80
10 Rated short circuit switching current kA 63 8
11 The cumulative number of swilching times under rated short-circuit switching 次Times 15 10
12 Rated short circuit duration S 4
13 Closing time lat rated operating voltagel S ≤0.1
14 Switching time (at rated operating voltagel S 0.06
15 Rated order of operation C-0.3s-CO-180s-CO
16 Rated opening and closing monomial copacitor bank current 400
17 In leakage %years ≤1
18 Water content of sulfur hexafluoride gos (V/VM) ≤150x10-9
19 CT14 spring operating mechanism with rated operating voltage
Closing coil,opening coil voltage V IAC):220 380 (DC):48 110 220
Energy storage motor voltage V IAC):220 380 (DC):110 220
20 Sulfur hexafluoride gas weight KG 8
21 Weight of circuil breaker [including operafing mechanisml KG 1400

Structure And Mounting Dimensions

Working Environment:

Item:LW16-40.5 SF6 Circuit Breaker

Working Environment of LW16-40.5 SF6 Circuit Breaker:

· Ambient Temperature: -30°C to +40°C

· Altitude: Up to 1,000 meters (can be customized for higher altitudes)

· Humidity: The relative humidity should not exceed 95%.

· Pollution Level: Suitable for moderate pollution environments (up to pollution degree III).

· Seismic Resistance: Designed to withstand earthquake intensity of up to 8 degrees on the Richter scale.

These environmental conditions ensure the circuit breaker operates reliably under typical conditions found in power distribution systems.

Possible causes of electrical circuit failure

Item:LW16-40.5 SF6 Circuit Breaker

·  Faulty SF6 Gas Pressure:

· ·  Insufficient SF6 gas pressure can lead to poor arc quenching performance, causing the breaker to fail to interrupt faults properly.

·  Contamination of SF6 Gas:

· ·  Moisture or contaminants in the SF6 gas can degrade its dielectric properties, affecting the performance of the breaker.

·  Mechanical Failure:

· ·  Wear and tear of internal components, such as contacts, springs, or the operating mechanism, can cause failure in the opening/closing operation.

·  Electrical Overload:

· ·  Excessive current passing through the breaker beyond its rated capacity may cause overheating, damage to contacts, or insulation failure.

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FAQ

Item:LW16-40.5 SF6 Circuit Breaker

1.What is the rated voltage of the LW16-40.5 SF6 Circuit Breaker?

· The LW16-40.5 SF6 Circuit Breaker is designed for a rated voltage of40.5 kV and is suitable for 35 kV power systems.

2.What type of gas is used in the circuit breaker?

· The LW16-40.5 usesSF6 (Sulfur Hexafluoride) gas, which has excellent dielectric and arc-extinguishing properties.

3.How often can the LW16-40.5 SF6 Circuit Breaker operate?

· The LW16-40.5 is designed forfrequent operation, making it ideal for applications such as tie circuit breakers and circuit breakers for capacitor and reactor banks.

4.Can this circuit breaker replace other types of breakers?

· Yes, the LW16-40.5 canreplace the SW2-35 oil-less circuit breaker directly. With the use of filter brackets, it can also replace various types of multi-oil circuit breakers.

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