MIL-M-24116B

Abstract

This specification covers the general requirements for voltage and frequency monitors for Naval shipboard installation. <br>The monitors shall be of the following types as specified (see <a>6.2.1</a>): </span><pre> Type VM1 - For sensing under voltage and over voltage limits on a single phase power system and providing direct current (dc) power to trip the connected remote feeder circuit breaker. Type VM3 - For sensing under voltage and over voltage limits on a 3 phase power system and providing dc power to trip the connected remote feeder circuit breaker. Type VFM3 - For sensing under voltage and over voltage and under frequency and over frequency limits on a 3 phase power system and providing dc power to trip the connected remote feeder circuit breaker.</pre> <br> <strong>Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 55Z3, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.</strong> <br><b><u>Intended Use:</u></b> The monitors should be connected to the output terminals of rotating or static units supplying delta or wye connected power to electronic equipment. Upon sensing unsuitable power conditions, the monitor should provide dc power to trip the feeder circuit breaker thereby isolating the electronic loads. <br>