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High Voltage Sf6 Circuit Breaker
  • High Voltage Sf6 Circuit BreakerHigh Voltage Sf6 Circuit Breaker
  • High Voltage Sf6 Circuit BreakerHigh Voltage Sf6 Circuit Breaker
  • High Voltage Sf6 Circuit BreakerHigh Voltage Sf6 Circuit Breaker
  • High Voltage Sf6 Circuit BreakerHigh Voltage Sf6 Circuit Breaker
  • High Voltage Sf6 Circuit BreakerHigh Voltage Sf6 Circuit Breaker

High Voltage Sf6 Circuit Breaker

Item:high voltage sf6 circuit breaker
Excellent Arc Extinguishing Performance: SF6 gas is highly effective at extinguishing electrical arcs.
Compact Structure: The design is simple and space-efficient, allowing for easier integration.
Good Opening Performance: Ensures reliable operation with balanced performance.
Sealed Design: Minimizes operational noise for quieter performance.
Low Maintenance Needs: Reduces inspection and maintenance workload significantly.

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Product Description

Item:high voltage sf6 circuit breaker

The LW36-72.5 is an outdoor three-pole AC 50 Hz high-voltage circuit breaker, designed primarily for the protection of power transmission and transformation lines. It can also serve as a tie circuit breaker. This breaker is assembled on a frame, and operation is not possible with just one pole.


Features:
Excellent Arc Extinguishing Performance: SF6 gas provides outstanding electrical insulation and arc extinction.

Superior Breaking Performance: Delivers effective breaking capabilities with low operating noise.

Compact and Simple Design: The structure is straightforward and space-efficient.

Low Maintenance Workload: Maintenance requirements are minimal, with longer intervals between maintenance cycles.

Working Environment:

Item:high voltage sf6 circuit breaker

High-voltage SF6 circuit breakers are designed to operate effectively under a variety of environmental conditions. Key aspects of their working environment include:


Outdoor Installation:

These circuit breakers are typically installed outdoors and are designed to withstand weather elements such as rain, snow, and high humidity.


Temperature Range:

They can function effectively in a wide temperature range, often from -30°C to +40°C (-22°F to +104°F), depending on specific design standards.


Altitude:

SF6 circuit breakers are suitable for operation at high altitudes. However, performance may need to be adjusted at extreme elevations due to lower air density.


Pollution Levels:

Designed to resist the effects of environmental pollution, such as dust and salt, these breakers often have enhanced insulation and protective features 

Main Technical Parameters

Number

Parameter

Unit

Value

1

Rated voltage

kV

72.5

2

Rated current

A

2500/3150

3

Rated short-circuit breaking current

kA

31.5/40

4

Rated short-circuit making current (peak value)

kA

80

5

Rated short-time withstand current

kA

31.5/40

6

Rated short circuit duration

S

4

7

Rated peak withstand current (peak)

kA

80

8

Near zone fault breaking current

kA

31.5×75%

9

Rated out-of-step breaking current

kA

31.5×25%

10

first open pole coefficient


1.5

11

Opening time

S

≤0.03

12

Breaking time

S

≤0.06

13

Closing time

S

≤0.15

14

split time

S

≥0.3

15

united time

S

0.06

16

Weight of sulphur hexafluoride gas charged into circuit breaker

kg

3.5

17

Circuit breaker gross weight

kg

1000

18

Mechanical life

Second-rate

3000

Structure And Mounting Dimensions


Possible causes of electrical circuit failure

Insulation Failure:

Deterioration of insulation materials can lead to breakdown, allowing electrical arcing or short circuits.

Gas Leakage:

Loss of SF6 gas due to leaks can compromise insulation and arc-extinguishing capabilities.

Mechanical Malfunction:

Issues with mechanical components, such as the operating mechanism or linkages, can prevent the breaker from functioning correctly.

Overcurrent or Overload:

Excessive current beyond the rated capacity can cause overheating and damage to the circuit breaker.

Product Real Shot

FAQ

A1:What is an SF6 circuit breaker?

Q1: An SF6 circuit breaker uses sulfur hexafluoride (SF6) gas as an insulating and arc-extinguishing medium to protect electrical circuits from overloads and faults.


A2: What are the key features of high-voltage SF6 circuit breakers?

Q2:Key features include excellent insulation and arc-extinguishing properties, compact design, low operating noise, and minimal maintenance requirements.


A3:What is the operating principle of an SF6 circuit breaker?

Q3:It operates by using SF6 gas to quench arcs that occur during circuit interruption, allowing for rapid and reliable disconnection of electrical faults.


A4:How does temperature affect the performance of SF6 circuit breakers?

Q4:SF6 circuit breakers are designed to operate effectively across a wide temperature range, but extreme temperatures may affect gas pressure and insulation properties.

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