circuit currents.
2.Application Environment
1. Pulling height: no more than 1000m (if there are special requirements, please specify when
ordering); 2. Ambient temperature: -25ºC~+40ºC;
2. Relative humidity: the daily average relative humidity is not more than 95%, and the monthly
average relative humidity is not more than 90%;
3. Seismic strength: no more than B degree;
4. There is no serious pollution in the surrounding air, such as dust, smoke, chemical turbidity agent,
flammable gas, gasoline and salt agent.
3. Product Features
1. Features: double-break, three-station, rotary moving contact.
2. Good insulation performance, the load switch is sealed by epoxy resin casting upper and lower
shells, and the main circuit and grounding circuit system are all placed in the shell.
3. The safety performance is good. If an arc occurs inside, there is a structural weak point at the rear
of the shell, which will be punched open, and then the arc relief valve on the cabinet will be punched
open and the over pressure airflow will be directed to the outside of the cabinet.
4. Both manual and electric operation are available, and the operation is convenient and reliable.
Three-phase integral installation, good periodicity, small number of parts, convenient adjustment and
installation, simple and easy, maintenance-free, long life.
5. The product has a three-position arc extinguishing chamber of "close-open-ground", and is
equipped with a "five-proof interlock" function (to prevent the switch on and off with load, to
prevent entering the live interval by mistake, to prevent the main switch from being accidentally
opened and closed, to prevent Live grounding equipment, to prevent the grounding switch from
closing (power transmission), reliable interlocking, high fracture insulation strength, large creepage
design, the outlet end is protected by a pressure equalizing cover, special dynamic seal and fixed seal
design, plus advanced The technical performance and light and flexible assembly scheme can fully
meet the ever-changing requirements of the market. It is a new generation of high-voltage switchgear
equipped with urban power grids.
4.Technical Advantages
1. The high-margin primary high-voltage insulation design has IP33 protection grade! The overall
switchgear is made of aluminum-zinc coated sheet, and the design strengthens the consideration of
the insulation safety level of the front operating room, so as to better ensure that the overall
switchgear is safe for people. security.
2. LN36-40.5 can be used as compact, miniaturized, frequent operation and other places.
3.Compact design combination switch, isolation belt grounding. High electrical life and mechanical
life.
4.SF6 load switch with high reliability. Low SF6 gas pressure, high reliability. Gas storage time is up
to 20 years.
5.Arc Extinguishing Principle
SF6 gas has good arc extinguishing performance. In order to quickly extinguish the arc, the switch
will generate an arc when the moving and static contacts are separated during the current breaking
process. Long and continuous in combination with SF6 gas, it is rapidly dissociated and cooled, and
extinguishes when the current crosses zero. The double-break distance has the insulation level of
isolated fractures. Lightweight for extended electrical life.
6.Technical Parameter
Remark:Note: The short-circuit breaking capacity is based on the parameter value of the fuse.
Audited Supplier 
){kind=link}
){kind=link}