Can plastic enclosures be used for equipment in intrinsically safe explosion-proof certification?
tolerable.
Intrinsic safety, i.eIntrinsic safety typeMainly achieved by limiting the energy in the circuit to ensure the intrinsic safety of the device, with no restrictions on plastic or metal casings.
However, there are requirements for the use of plastic shells.
GB/T3836-1-26.13 specifies that in order to avoid ignition hazards 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 is not greater than 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 according to the actual situation, welcome to consult.
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