BIS, 2009.
ETD 22: Electrical Apparatus for Explosive Atmosphere.
This part of IEC 60079 contains the specific requirements for the construction and testing of electrical apparatus with pressurized enclosures, of type of protection .p., intended for use in explosive gas atmospheres. It specifies requirements for pressurized enclosures containing a
limited release of a flammable substance.
This standard supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirements of this standard takes precedence.