This standard applies to all overhead, pad-mounted, dry-vault, and submersible single-pole or multipole alternating current automatic line sectionalizers for rated maximum voltages above 1000 Vac. In order to simplify the vocabulary of this standard, the term sectionalizer has been substituted for automatic line sectionalizer wherever possible.
IEEE C37.63-1997
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IEEE Standard Requirements for Overhead, Pad-Mounted, Dry-Vault and Submersible Automatic Line Sectionalizers for AC Systems