1. Electrical Apparatus of Flameproof Type of Explosion Protected Construction
Electrical apparatus which is of flameproof construction is subjected to a type test and certified by the Japanese Ministry of Labour aiming at preventing explosion caused by electrical apparatus in a factory or any location where inflammable gases or vapours may be present. The flameproof construction is of completely enclosed type and
its enclosure shall endure explosive pressures in cases where explosive gases or vapours entering the enclosure cause explosion. In addition, the enclosure construction shall be such that flame caused by explosion does not ignite gases or vapours outside the enclosure.
In this manual, the word "flameproof1 is applied to the flameproof equipment combined with the types of protection Me", "o", "i", and "d" as well as flameproof equipment.