Operation Manual
GMC-I Messtechnik GmbH 75
Battery Test
is dis-
played
All
Rechargeable batteries must be recharged, or replaced towards the end
of their service life (U < 8 V).
PE test by means of finger contact at the contact surfaces on the test plug
LCD LEDs
is displayed
U
L
/R
L
FI/RCD
light up
red
XX
U
(single-phase
measurement)
Potential difference 50 V between finger contact and PE (earth contact)
Frequency f 50 Hz
is displayed
U
L
/R
L
FI/RCD
light up
red
XX
U
(single-phase
measurement)
If L is correctly contacted and PE is interrupted (Frequency f 50 Hz)
Error Messages — LCD Pictographs
XX
All measurements
with protective
conductor
Potential difference U
L
between finger contact and PE (earth contact)
(Frequency f 50 Hz)
Remedy: inspect PE connection
Note: only when appears: measurement can nevertheless be
started by pressing the start key again.
XX
I
N
/ I
F
Z
L-N
/ Z
L-PE
/ R
E
1) Voltage too high (U > 253 V) for RCD test with direct current
2) U always U > 550 V with 500 mA
3) U > 440 V for I
N
/ I
F
4) U > 253 V for I
N
/ I
F
with 500 mA
5) U > 253 V for measurement with probe
XX I
N
RCD is tripped too early, or is defective.
Remedy: test circuit for bias current
XX Z
L-PE
RCD is tripped too early, or is defective.
Remedy: Test with “DC + positive half-wave”.
XX I
N
/ I
F
RCD tripped during contact voltage measurement.
Remedy: Check selected nominal test current.
EXTRA PRCD
PRCD has tripped.
Cause: poor contact or defective PRCD
X X All except for U
Externally accessible fuse is blown.
The voltage ranges remain functional even if fuses have blown.
Special case, R
LO
: Interference voltage during measurement may result in a
blown fuse.
Remedy: Replace fuse (replacement fuses in battery compartment).
Observe notes regarding fuse replacement in section 20.3!
XX
I
N
/ I
F
Z
L-N
/ Z
L-PE
/ R
E
Frequency out of permissible range
Remedy: inspect mains connection
Status
Test
plug
Meas.
Adapter
Position of the
Function Switch
Function / Meaning
PE
PE