11kv Sf6 Gas Load Break Switch Lbs

The 11kv sf6 gas load break switch lbs is designed for three phase AC Power distribution networks with a frequency of 50 Hz and a max. working voltage of 12 kV. It is suitable for use in ring main units and double radial power supply networks, where it is applied for making and breaking load currents as well as overload currents. In addition, it can be used for switching no load overhead lines, unloaded transformers, and capacitor banks. The main features is showed as the below:

Excellent Insulation Performance

The enclosure of 11kv sf6 gas load break switch lbs is made of cast epoxy resin and filled with SF6 gas, which provides strong insulation and the ability to withstand internal arcs to ensure safe and reliable operation.

Low Switching Overvoltage

Since the arc quenching properties of SF₆ gas, the arc column remains narrow and stable until current zero, which reduces the risk of restrikes and minimizes chopping overvoltage.

Free Maintenance Design

Most models have a fully sealed structure that requires little to no routine servicing. Certain key components are designed to operate for up to 20 years without maintenance.

Safe and Easy Operation

Both manual and motorized operating options are available to a 11kv sf6 gas load break switch lbs. A mechanical interlock system ensures safe position changes and prevents misoperation.

Wide Range of Applications

Designed for 12 kV distribution systems, the 11kv sf6 gas load break switch lbs can be used for line isolation, load current and overload current interruption, and when combined with fuses, it provides protection against short circuit faults.

Product Parameter:

Product FAQ:

Q: What is an 11kv sf6 gas load break switch lbs?

A: An 11kv sf6 gas load break switch lbs is a medium voltage switching device used in 11 kV distribution networks. It is designed to make and break load current, overload current, and no load line or transformer switching duties. The switch uses SF6 gas as the insulating and arc quenching medium, to ensure safe and reliable operation.

Q: How does an 11kv sf6 gas load break switch lbs differ from a sf6 gas circuit breaker?

A: An 11kv sf6 gas load break switch lbs is intended primarily for load current interruption, not for clearing high short circuit faults on its own. When combined with current limiting fuses, the 11kv sf6 gas load break switch lbs can act as a functional substitute for a circuit breaker. In this arrangement, the sf6 gas load break switch handles normal load switching, while the fuse clears heavy fault currents.

Q: What maintenance is required on an 11kv sf6 gas load break switch lbs?

A: Most 11kv sf6 gas load break switch lbs are designed with a gas compartment which the leakage rate is lower than 0.5% per year. it requires no routine gas refilling for up to 20 to 30 years. Periodic functional checks of the mechanism, interlocks, and auxiliary circuits are generally sufficient.