Safety information
Operating instructions SVCD(S)
19
123456278
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419A58
Elektrotechnische Anlagen GmbH
1
Operation on a generator
The usage of a power feedback unit within an island network (e.g. with a diesel genera-
tor) is possible, but there are restrictive regulations concerning the power limits.
M
M
REVCON
R
0,4kV
100kVA
20kW
20kW
G
FC
Figure 2.6.1
Within a network that is assembled like in figure 2.6.1 there are two additional restric-
tions: First the power of the motor connected to the inverter must be lower than half of
the nominal power of the generator. Second the total amount of the power of the two
other loads must be more than double of the feed back power.
If these conditions aren't checked up a change from motor to generator operation may
result in load shocks. These shocks are too dynamic for the voltage regulator of the gen-
erator. The regulator reacts with an overshoot and as a result of this with an over voltage
within the island network.
Danger!
Over voltages may cause serious damages to the connected frequency inverter and /or to the
power feedback unit and to the other loads.
