Can plastic casings be used for equipment in intrinsic safety and explosion-proof certification?

Sure.

Intrinsic safety, i.eIntrinsic safety typeThe essential safety of the equipment is mainly achieved by limiting the energy in the circuit, without any restrictions on plastic or metal casings.

However, there are requirements for the use of plastic shells.

According to GB/T3836-1-26.13, in order to avoid the risk of ignition caused by electrostatic chargesThe surface resistance of Class II electrical equipment should be limited to no more than 1G Ω.

So, as long as the surface resistance test of the device does not exceed 1G Ω, a plastic casing can be used. If the customer encounters a situation where the surface resistance test fails during actual operation,Zhongnuo TestingWe can provide solutions based on the actual situation. Please feel free to inquire.