Glossary of Terms - B

B-O-N - Bay-O-Net; under-oil expulsion fuse cutout; a device whose mechanics represent a stab-sheath arrangement to hold an expulsion fuse; a device that provides a simple means of replacing an internal under-oil fuse in the field.

Back-up Current Limiting Fuse - A current-limiting fuse capable of interrupting all currents from its rated maximum interrupting current down to its rated minimum interrupting current as specified by the manufacturer; defined by ANSI C37.40-1981 or latest issue.

Basic Insulation Level (BIL) - a reference insulation level expressed as the impulse crest voltage of the nominal 1.2 X 50 microsecond wave. This is a measure of the ability of the insulation to withstand very high voltage surges.

Bay-O-Net Assembly - Under-oil expulsion fuse cutout; a device whose mechanics represent a stab-sheath arrangement to hold an expulsion fuse; a device that provides a simple means of replacing an internal under-oil fuse in the field.

Bay-O-Net Cartridge - The cartridge at the end of the Bay-o-Net stabber holder which holds the Bay-O-Net fuse link.

BIL - Basic Insulation Level; a reference insulation level expressed as the impulse crest voltage of the nominal 1.2 X 50 microsecond wave. This is a measure of the ability of the insulation to withstand very high voltage surges.

Breakdown Voltage - Voltage at which material fails.

Glossary Index