ELECTRICAL APPARATUS FOR MINES. GATE-END BOXES. PRESCRIPTIONS FOR GATE-END BOXES USED FOR SECUNDARY VENTILATOR FEEDING.
矿山用电气设备 门端盒 用于辅助呼吸机供给的门端盒的处方

1986-05-15

ELECTRICAL APPARATUS FOR MINES. GATE-END BOXES. FLEXIBLE CABLE PROTECTION.
矿山用电气设备 门端盒 柔性电缆保护

1986-12-15

ELECTRICAL APPARATUS FOR MINES. GATE-END BOXES. REMOTE CONTROL CIRCUITS.
矿山用电气设备 门端盒 遥控电路

1985-12-15

Specification for mining type flameproof gate-end boxes-Gate-end boxes with lighting transformers
矿用隔爆门端箱规范

1971-03-26

Specification for mining type flameproof gate-end boxes-Gate-end boxes for drilling machines (for use on 3-phase a.c. circuits up to 650 V)
矿用隔爆门端箱规范

1972-01-25

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

1968-08-30

Specification for mining type flameproof gate-end boxes-Gate-end boxes for direct-on-line motor starting (for use on 3-phase a.c. circuits up to 650 V)
矿用隔爆门端箱规范

1969-03-20