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Brand:Mingde Electrical

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??For??High-Voltage??Switchgear??And??Controlgear??Standards,

??China??Power??Sector??Standards??DL403.

Also??meet??the??requirements??of??IEC62271-100,??IEC56??and??other??main??industrialized??countries?????similar??standards

High Voltage Circuit Breaker Testing

VMD5??series??circuit??breaker??have??passed??has??passed??following??

test??, ??to??ensure??the??product???s??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.

High Voltage Circuit Breaker Scope??of??application

It??is??universally??used??in??power??plant??,??electric??network??,??metallurgy??industry??petrochemical??industry??and??infrastructures,

such??as??airport??, ??subway, ??building.

Safety

VMD5??circuit??breaker??possesses????perfect??mechanical??and??electric??interlock??equipment??,??meanwhile??,

its??high??reliable??operating??performance??and??mechanical??life??,??coodinated??with??matched??switchgear??cabinet??,

to??ensure??normal??power??distribution??,??operator??and??equipment???s??safety.