| Brand | ROCKWILL |
| Model NO. | LW43-252 high voltage SF6 circuit breaker |
| Rated voltage | 252kV |
| Rated normal current | 4000A |
| elevation | 1000m |
| Series | LW43-252 |
Description：
LW43-252 High Voltage SF6 Circuit Breaker is a three-pole AC 50Hz outdoor high voltage switchgear. It is mainly used for the control and protection of 220kV power system, and can also be used as a contact circuit breaker.
Industry applications：
LW43-252 High Voltage SF6 Circuit Breaker is a three-pole AC 50Hz outdoor high voltage switchgear. It is mainly used in 220kV power system.
Control and protection, can also be used as a contact circuit breaker.
Features：
Strong self-energy arc extinguishing and breaking ability.
The structure is simple.
An elongated spout is used, and a new filler is added to the material.
Long electrical life.
Strong carrying capacity.
Good insulation performance.
The seal structure is reliable.
Low radio interference voltage.
Low operating noise.
There is no oil leakage and air leakage in the mechanism.
Easy on-site installation.
Low amount of operation and maintenance.
Technical parameters：
Dimension：
We have a professional service team.
We have good after-sales.
We can guarantee the quality of our products.
What are the pressure requirements in the interrupter interrupter of a tank circuit breaker?
The SF₆ gas in the arc quenching chamber of a tank-type circuit breaker needs to be maintained within a certain pressure range, typically between 0.4 MPa and 0.7 MPa. Maintaining the appropriate gas pressure is a key factor in ensuring the insulation and arc-quenching performance of the gas.
High Pressure: If the gas pressure is too high, it can place excessive stress on the sealing structure of the arc quenching chamber, increasing the risk of leaks.
Low Pressure: If the gas pressure is too low, the insulation strength and arc-quenching capability of the SF₆ gas will decrease, making it ineffective in extinguishing arcs. This can even lead to circuit breaker failures.
As the ambient temperature changes, the pressure of the SF₆ gas will also change accordingly. Therefore, it is necessary to monitor and adjust the gas pressure under different temperature conditions to ensure that it remains within the normal operating pressure range.
