RATING
STANDBY POWER : Standby ratings are for the supply of
emergency power at variable load in the event of a main
power network failure up to a maximum of 500 hours
per year. No overload in permitted.
PRIME POWER : All ratings are suitable for continuous
electrical power (at variable load in lieu of main power
network). There is no limitation to the annual hours of
operation and all models can supply 10 % overload power
for 1 hour in 12 hours.