EPA LEAKCOMP 1C, Инструкция по эксплуатации

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Troubleshooting
LEAK COMP ® 1C www.leakcomp.de 33
of
34
9.5 Fault detection and rectification
Fault/error message Possible cause(s) Remedy
RCCB trips, despite the
use of the LEAK COMP
®
1C .
Wiring error – neutral
conductor tapped before
residual current circuit breaker
Check wiring and tap N after
residual current circuit breaker
Compensation current is too
low
Increase compensation current;
Insert jumper
C1-C2
;
Switch additional LEAK COMP
®
1C
(s) in parallel
Compensation current is too
high
Reduce compensation current;
Remove jumper
C1-C2
;
50 Hz leakage current due to
insulation fault
Correct insulation fault
High leakage current at
150 Hz
Compensate leakage current of
three-phase inverter
(e.g. EPA LEAK COMP
®
HP )
EMC filter /mains filter
with high leakage current
Use low-leakage current filters
(e.g. EPA NF-1ph-FSE)
High leakage currents in the
range of the inverter switching
frequency
Use additional mains filters to
reduce high-frequency leakage
currents (e.g. EPA NF-DAR, NF-KC-
DAR)
Leakage current too high (with
unknown frequency)
Carry out a leakage current analysis
(e.g. with EPA LEAK WATCH)
Red LED is flashing Phase and neutral reversed Check assignment of phase and
neutral conductor on LEAK COMP
®
1C and change wiring if necessary
No protective conductor
connection
Check for presence of protective
earth conductor and ensure a low-
resistance connection to the
compensation terminal
High neutral conductor
voltage
Check voltage between neutral and
protective earth conductor and
eliminate potential difference, if any
Both LEDs are off No power supply Check voltage supply at terminals L
and N
Device defective Send the
LEAK
COMP
®
1C to EPA