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Historically, battery disconnects/protectors were not placed on flooded telecom DC plant battery strings in order to improve reliability. However, with the use of more and more VRLA batteries, and the placement of telecom batteries in environments not under the “exclusive control” of the telecommunications company, use of battery disconnect devices has become more prudent. Proper sizing of these devices for normal, recharge, and interrupt currents and voltages is crucial to ensure a reliable DC system.
This presentation will cover protectors and disconnects for battery strings, as well as SPDs for DC circuits that leave the structure.
Senior Lead Power Tech Support Engineer