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English to Portuguese translations [PRO] Tech/Engineering
English term or phrase:blank off
A resistance, not less than 1000 Ohm/ volt of the operating voltage must be measured. This insulation resistance is reduced when a cast resin dry-type transformer becomes damp or moist due to unusual circumstances. If this occour, the transformer must be dried. If necessary, your local XXX will advise the most efficient drying methods.
* Clean all pin isolators connection points. The terminal flags must be bright and all tarnish removed.
* cupal plates must always be inserted between aluminium to copper connections, to avoid any corrosion.
* Use anti-corrosive paste on all bright metal parts.
* BLANK OFF any unused glands, or cable entries, especially those on transformer enclosures.