For electrical isolation, is it necessary to pull out the cabinet drawer?
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As the title says. For electrical energy isolation, in a 400V cabinet, after labeling and locking it, is it necessary to pull out the drawers?
Whether it is necessary to pull out the drawer when performing electrical isolation depends on the equipment’s design and operating procedures. Generally, plugging in and locking is done to ensure an isolated state; if pulling out the drawer can further enhance safety by preventing any electrical current from flowing, then taking that step is a more secure approach. The specific procedures should be followed in accordance with relevant safety standards and operation manuals. .
If it’s not a normal situation where power is cut for maintenance, there’s no need to pull out the drawer. Otherwise, the drawer must be pulled out. For reference.