Product Description

General Provision
VMD3 lateral fixed type vacuum circuit breaker is our companys independent developed new product for *2KV/*4KV , its operating mechanism is new style spring operating mechanism,developed by our company, with simple structure and reliable operation.

Product Features
Satisfy the GB,IEC and other international standard
Three-phase longitudinal conductance circuit,can be suitable for compound insulation method and solid insulation method（embedded pole）.
Compact structure
Thoroughly meet usersrequirements,suitable for kinds of box-type substation,RMU and switchgear.
Perfect mechanical and electrical interlock device,further ensure the safe operation.

Testing
VMD3 series circuit breaker have passed has passed following
test , to ensure the products safe operation.

Type tests : power-frequency withstand voltage tests , lighting impact withstand voltage tests, , temperature rising tests, short-time withstand current tests , peak withstand current tests ,short circuit breaking ability tests , mechanical lift tests,ect

Routine test before out of factory: mechanical performance test  , power-frequency withstand voltage tests of the main circuit , insulating property  tests on control and auxiliary circuits ,measurement of ther resistance of the main circuit , interlock operating tests , mechanical operating tests, Electrical Equipment operating tests.