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Electronic apparatus and appliances --- Electronic apparatus and appliances.

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This guide covers general recommendations for loading mineral-oil-immersed power transformers, manufactured in accordance with ANSI C57.12.10-1976 and ANSI C57.12.30-1977 and other oil-insulated power transformers up to and including 100 MVA maximum nameplate rating. It is based mostly on aging of the winding insulation. Loading of transformers larger than 100 MVA may be limited by factors other than insulation aging such as stray flux, etc. When it is known that such limitations do not exist and insulation aging rather than oil temperature, gassing, tank heating, etc., is the controlling factor, this guide may be used. This guide may also be used for askarel filled transformers.

Electric apparatus and appliances --- Electric transformers. --- Protection.

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The low voltage air gap surge protective device is a gap-type overvoltage limiter for use on communications, power and signalling circuits. This IEEE standard applies to air gaps for overvoltage protection applications on systems with operating voltages equal to or less than 600 V.

Electric apparatus and appliances --- Transients (Electricity) --- Overvoltage. --- Protection. --- Standards.

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Electronic apparatus and appliances --- Automatic test equipment --- Testing

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Electronic apparatus and appliances --- Automatic test equipment --- Automatic test equipment. --- Testing --- Testing.