Under normal circumstances hoist Working environment humidity less than 85%, electric hoist protection class IP44,manual block but with the humidity required to adapt more and more occasions, for more than 85% in the wet conditions, the hoist to some special requirements.
In nuclear power plants, nuclear equipment and other high-pressure water washing areas are at 100% humidity,wire rope winch which requires the hoist protection must be increased, therefore, the humidity is greater than 85% to 100% of the use of the environment, the hoist motor and electrical protection class shall be IP55. Besides in a humid environment, the motor should be taken for more than 10kw additional preheating drying device before use.hoist equipment If operating in the open, the hoist should be created on the electrical motor hard rain cover.
Lever hoist is a simple to use and easy to carry the manual lifting tool. It can be enhanced traction, down, calibration and other operations. Weight is generally no more than 50T. Widely used in shipbuilding, electric power, transportation, construction, mining, telecommunications and other sectors of the equipment installation, lifting items, mechanical retraction.
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