Outdoor Sf6 Circuit Breaker
Item:Outdoor Sf6 Circuit Breaker SF6 Gas: Excellent arc extinguishing performance. Simple Structure: Compact and easy to manage. Good Opening Performance: Ensures balanced operation. Sealed Design: Low operational noise. Low Maintenance: Minimal inspection and maintenance required.
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Product Description
Item:Outdoor Sf6 Circuit Breaker
The LW24 outdoor SF6 circuit breaker is a high-voltage outdoor switchgear designed for three-phase AC at 50Hz and a rated voltage of up to 35kV. It is suitable for:
● Splitting and closing load current
● Breaking fault current
● Switching power lines
Possible causes of electrical circuit failure
● Insulation Failure: Deterioration of insulation materials can lead to short circuits or ground faults.
● Gas Contamination: Impurities or moisture in the SF6 gas can impair its insulating properties, potentially causing failures.
● Mechanical Wear: Over time, mechanical components (such as contacts or operating mechanisms) may wear out, leading to operational issues.
● Electrical Overloading: Exceeding the rated current capacity can cause overheating and eventual failure of the circuit breaker.
Model Description
Main Technical Parameters
|
Serial number |
Parameter |
Unit |
Value |
|
|---|---|---|---|---|
|
1 |
Rated voltage |
kV |
126、110、90 |
|
|
2 |
Rated power frequency withstand voltage (1mim) |
to the ground |
kV |
K·230 |
|
between fractures |
kV |
K·265 |
||
|
3 |
Rated lightning impulse withstand voltage |
to the ground |
kV |
K.550 |
|
between fractures |
kV |
K.630 |
||
|
4 |
Power frequency withstand voltage at zero gauge pressure of SF6 gas |
kV |
K.95 |
|
|
5 |
Rated frequency |
Hz |
50 |
|
|
6 |
Rated current |
A |
3150 |
|
|
7 |
first open pole coefficient |
|
1.5 |
|
|
8 |
Rated short-circuit breaking current |
|
40 |
|
|
9 |
Rated short-circuit making current (peak value) |
kA |
100 |
|
|
10 |
Rated short-time withstand current |
kA |
40 |
|
|
11 |
Rated peak withstand current |
kA |
100 |
|
|
12 |
Rated short circuit duration |
S |
4 |
|
|
13 |
Rated out-of-step breaking current |
kA |
10 |
|
|
14 |
Near zone fault breaking current |
kA |
90%lk, 75%lk |
|
|
15 |
Rated line charging switching current |
A |
31.5 |
|
|
16 |
Nominal Operation Sequence |
|
0-0.3s-CO-180s-CO |
|
|
17 |
Main circuit resistance |
µΩ |
≤40 |
|
Structure And Mounting Dimensions
Product Real Shot
FAQ
A1:What is an SF6 Circuit Breaker?
Q1:An SF6 Circuit Breaker uses sulfur hexafluoride gas as an insulating and arc-extinguishing medium, designed for high-voltage applications.
A2:What is the operating altitude for these circuit breakers?
Q2:They are designed for operation in environments below 2500 meters above sea level.
A3:What temperature range can these breakers operate in?
Q3:Typically, they function well in a wide temperature range, often from -25°C to +40°C, depending on specific model specifications.
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