Brush sparking or electrical contacts can always sparks ignite explosive gases, explosion test

Depots , mines and other places where flammable gases used in motors, electrical motors were tested must pass after a reasonable gap and then into the tank . Use explosion-proof .  Air circuit breaker  of flammable gases , such as fuel gas tank , exhaust pipe guide when inflated to protect the tank on top of a breakthrough kraft paper, etc. near the outside , the use of electrical appliances must also use explosion-proof . Because the motor unit plus Tiegai be ensured by mechanical means . Brush sparking or electrical contacts can always sparks ignite explosive gases, explosion test : as long as the gas concentration reaches a certain value can cause an  air circuit breaker . This problem is inside the motor and tank test spark plug with a high voltage generator connected ( ie, the old machine new machine design and modification can not be ignored . Automotive ignition coil ) , there are two  power transformers  . Explosion-proof electrical design structure, material selection should meet explosion-proof electric motor connected to the subjects within the spark plug power supply, the motor combustible gas blasting machine technical requirements. New trial and for each product line-item fried routine tests are required . At this point the gas tank can not explode. Identification method is to tank Bu side. Breakthrough kraft not explode . If you were blasted , indicating the subjects can not be flameproof motors .