Safety information
ELTROPLAN-REVCON
page 17
2.6
General instructions
By these information to erectors and users of a plant hints on properties and
directions concerning the power feedback unit are given. These hints are not
entitled to completeness.
Special features in comparison towards a chopper
Unlike a braking resistor a power feedback device isn't a constant sink, but it's
dependent on the momentary characteristics of the supplying net. Commutation
brake downs and voltage-flicker in the net have an considerable effect to the
backward current of the device. In case of a short time voltage brake down the
backward current has to rise correspondingly to feedback the demanded power-
amount. Does the level of the supply voltage sink for a longer time, the maxi-
mum feedback power is reduced.
If only one phase fails, the device is able to work on, but the current in the two
remaining conductors will rise up to 150% of the normal level.
