Electrical installations in fire hazardous areas. Electric hoists

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Section 7. Electrical equipment of special installations

Electrical installations in fire hazardous areas. Electric hoists

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Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)

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7.4.26. The degree of protection of the shell of electrical equipment used for cranes, hoists and similar mechanisms must comply with Table. 7.4.1 - 7.4.3.

7.4.27. The current supply of lifting mechanisms (cranes, hoists, etc.) in fire hazardous zones of classes P-I and P-II must be carried out by a portable flexible cable with copper conductors, with rubber insulation, in a sheath resistant to the environment. In fire hazardous zones of classes P-IIa and P-III, the use of trolleys and trolley busbars is allowed, but they should not be located above the places where combustible substances are placed.

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