Safety information
24
Operating instructions SVCD(S)
123456278
-
419A58
Elektrotechnische Anlagen GmbH
1
Connection of further loads
The connection of further loads (e.g. cabinet ventilation or climatisation) parallel to the
frequency inverter / power feedback unit at a common circuit breaker like in figure 2.6.5
is not allowed. If it's done nevertheless, in case of tripping of the circuit breaker the con-
nection to the network (energy sink and synchronising element for the power feedback
unit) misses. The IGBT's now switch the DC-voltage directly to the other loads. The re-
sulting nearly rectangular "net"-voltage drives a current through the loads, which level
and form depends on their impedance. Is the power consumption of the loads to small, the
DC-voltage and also the output voltage of the power feedback unit rises during the feed
back operation. This increased voltage may damage all connected components.
M
60kW
FC
Supplying network
M
Right
False
REVCON
Figure 2.6.5
