36
Pos.
Faults Possible Causes Necessary Action
8 Despite inductive load
no stages are switched
on when relay is in
automatic mode.
When programming the
control relay, the c/k factor,
switching time delay, or
discharge time have been set
too high.
Check programming of the control
relay and change if necessary.
In automatic operation the c/k
factor was not correctly
detected.
Check the control circuit according to
the circuit diagram and repeat the
automatic test procedure.
A different current measuring
meter (e.g. ammeter) has
been connected in parallel
with the control relay to the
secondary side of the current
transformer.
All measuring instruments in current
path must be connected in series
The capacitor stages are too
wide.
Finer adjustment of the capacitor
stages is required.
9 In automatic mode one
stage is continually
The c/k factor was set too low.
Set c/k value correctly according to
Table 3.
switched on or off
(hunting).
High load change; The delay
time was set too low.
Set higher delay time.
10 The "power factor (cos
phi)" display is less
Mode of connection incorrectly
programmed.
Reset mode of connection.
than the target power
factor although the
Fault in control circuit. Check whether the capacitor
contactors have been activated.
control relay has
switched on all stages
Fault in capacitor circuit. Check the fuses and contacts of the
capacitor contactors and perhaps
current absorbtion. Measure the
current of each capacitor stage with
a clamp-on current meter.
System undersized. Press "Set" button and read the
shortage of power from the display.
Failure in automatic
adjustment.
Repeat identification process.
11 Control relay does not
switch off all stages
c/k factor is set too high.
Set c/k factor according to Table 3.
during times of low load
or facility shut-down.
Control relay is in manual
mode.
Press "Man" button.
Version V2.10 ab SW 1.21
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