Specification for mining type flameproof gate-end boxes-Gate-end boxes with air-break circuit-breakers (for use on 3-phase a.c. circuits up to 650 volts)
矿用隔爆门端箱规范
Service conditions; ratings, design and construction, including means of protection; test requirements.Cross References:BS 88BS 159BS 229BS 279BS 350BS 542BS 862BS 936BS 1259BS 3101BS 3454