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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Section 4. Switchgears and substations

Switchgear with voltage up to 1 kV AC and up to 1,5 kV DC. Outdoor switchgear installation

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

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4.1.28. When installing switchgears outdoors, the following requirements must be observed:

1) the device must be located on a planned site at a height of at least 0,2 m from the planning level and must have a design that meets the environmental conditions. In areas where snowdrifts of 1 m or more are observed, cabinets should be installed on elevated foundations;

2) local heating must be provided to ensure the normal operation of devices, relays, measuring instruments and metering devices in accordance with the requirements of state standards and other regulatory documents. Cabinets must be provided with local lighting.

See other articles Section Rules for the installation of electrical installations (PUE).

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