What is the difference between explosion-proof motor safety-increasing type and explosion-proof type? Which is more demanding?

Explosion-proof motor is a general term, and the concept of explosion-proof is very wide and there are many kinds. Specifically, the motor is mainly flame-proof or safety-increasing. Flameproof motors are used in many places in coal mines, but the increased safety motors are strictly controlled, which are mainly used in air intake alleys, central substations, bottom yards and so on. , and must be used in conjunction with a dedicated switch, otherwise safety cannot be guaranteed. Explosion-proof type and safety-increasing type are both explosion-proof, depending on the need, we can't say which one is more demanding.