11111111111111111111111111111111111111111111111111111111CB6514B3AC5341
123456789A78B64CD67E8BAF1AFA
A
AA
123456278
-
419A58
Elektrotechnische Anlagen GmbH
A
2.5
General instructions
By this information to erectors and users of a plant hints on properties and directions con-
cerning the power feed/feedback unit are given. These hints are not entitled to complete-
ness.
Special features in comparison towards a chopper:
Unlike a braking resistor a power feed/feedback device isn't a constant sink, but it's de-
pendent on the momentary characteristics of the supplying net. Commutation break downs
and voltage-flicker in the net have a considerable effect to the backward current of the de-
vice. In case of a short time voltage brake down the backward current has to raise corre-
spondingly to feed/feedback the demanded power-amount. Does the level of the supply
voltage sink for a longer time, the maximum feed/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.