Ga: equipment for explosive gas environment, with “very high” protection level, is not the ignition source under normal operation, expected failure or rare failure.
Gb: equipment for explosive gas environment, with “high” protection level, is not the ignition source under normal operation or expected failure conditions.
Gc: equipment used in explosive gas environment, with “general” protection level, is not the ignition source in normal operation, and some additional protective measures can also be taken to ensure that effective ignition will not be formed in the case that the ignition source is expected to occur frequently (such as lamp failure).
Marst Safety Equipemnt(Tianjin) Co., Ltd, Rita, bradia@chinawelken.com, 86-17627811689
Post time: Feb-02-2023
