How to achieve automatic lifting function proof electromagnetic

starter box

Explosion-proof electromagnetic starter box auto-buck performance

requirements• 1 . For 1 and Zone 2 hazardous locations :• 2 . Applicable Ⅱ A, Ⅱ B, explosive atmosphere .• 3 . Welded steel shell :• 4 . Built with auto- transformers, AC contactors, time relay,

relay , thermal relays , current transformers, switches, fuses , voltmeter , ammeter, lights, etc. ;

• 5. With overload, short circuit, voltage , explosion proof wire rope electric hoist phase failure protection function :

• 6. Pipe or cable wiring ;• 7 . Comply with GB3836-2000, IEC60079 standard request.

Cranes console uses and environmental conditions applicable

• Uses: • double girder bridge cranes console (hereinafter referred to as the console) suitable for AC 50Hz

rated working voltage 660V and below and DC rated working voltage 440V and below the main circuit and control circuit, and the control box or control panel matched controls lifting and transport machinery similar conditions and other mechanical equipment in motor starting, speed, reversing and braking.

• Environmental conditions apply: • A, altitude does not exceed 2000m; • B, ambient air temperature does not exceed +40 ℃, not lower than -5 ℃, the average temperature

in the 24h cycle does not exceed +35 ℃; C, air cleaner, the highest temperature at +40 ℃ relative humidity less than 50% , lower temperatures can be improved relative humidity (e.g., at 20 ℃90%), due to temperature changes and allow the surface of the product may produce slight chance of condensation;

• D, power grid quality standards, the line voltage fluctuation range does not exceed +10% of the rated voltage value;

• E, vertical installation, tilt no more than 5 ℃, small gantry crane firmly installed in the host computer work should not have vertical and horizontal movement of the beating.