emergency lighting Flashcards
emergency light has what six components
rechargeable battery, battery trickle charger, battery voltage indicating light, test switch, transfer relay, and one or more lamps
emergency lighting takes the form of
unit equipment
batteries in emergency lighting are what volatages
6v 12v 24v
besides complete ac power failure supply, what other conditions may bring on the emergency lights?
brown outs, and low voltage battery disconnect
what advantages do led have over other bulbs
long life and low energy consumption
what are two kinds of storage batteries are used in unit lighting
lead acid and nickel cadium
whats the standard minimum emergency lamp operational time on a battery and what percent of the battery must be remaining after the standard time
must run for 30 mins with 91% of its voltage remaining after the 30 mins