Operation Manual

GMC-I Messtechnik GmbH 73
18 LED Indications, Mains Connections and Potential Differences
Status Test
plug
Meas.
Adapter
Position of the
Function Switch
Function / Meaning
LED Indications
NETZ/
MAINS
Lights up
green
X
I
N
/ I
F
Z
L-N
/ Z
L-PE
/ R
E
U, Z
ST
, kWh, IMD,
int. ramp, RCM
Correct connection, measurement enabled
NETZ/
MAINS
Blinks
green
X
I
N
/ I
F
Z
L-N
/ Z
L-PE
/ R
E
U, Z
ST
, kWh, IMD,
int. ramp, RCM
N conductor not connected,
measurement enabled
NETZ/
MAINS
Lights up
orange
X
I
N
/ I
F
Z
L-N
/ Z
L-PE
/ R
E
Line voltage of 65 V to 253 V to PE, 2 different phases active (no N con-
ductor at mains), measurement enabled
NETZ/
MAINS
Blinks red
XX
I
N
/ I
F
Z
L-N
/ Z
L-PE
/ R
E
U, Z
ST
, kWh, IMD,
int. ramp, RCM
1) No line voltage or
2) PE interrupted
NETZ/
MAINS
Lights up
red
XR
ISO
/ R
LO
Interference voltage detected, measurement disabled
NETZ/
MAINS
Blinks Yel-
low
X
I
N
/ I
F
Z
L-N
/ Z
L-PE
/ R
E
L and N are connected to the phase conductors.
U
L
/R
L
Lights up
red
XX
I
N
R
ISO
/ R
LO
– Contact voltage U
IN
and U
I
>25V respectively >50V
– Safety shut-down has occurred
– Limit value exceeded or fallen short of for R
ISO
/ R
LO
function
FI/RCD
Lights up
red
XX
I
N
/ I
F
int. ramp
The RCCB was not tripped, or was tripped too late during the tripping
test.
Mains Connection Test — Single-Phase System — LCD Connection Pictographs
is dis-
played
All except for U No connection detected
is dis-
played
All except for U Connection OK
is dis-
played
All except for U L and N reversed, neutral conductor charged with phase voltage
is dis-
played
All except for U and RE No mains connection
RE Standard display without connection messages
is dis-
played
All except for U Neutral conductor interrupted
is dis-
played
All except for U
Protective conductor PE interrupted,
neutral conductor N and/or phase conductor L charged with phase volt-
age
is dis-
played
All except for U
Phase conductor L interrupted,
neutral conductor N charged with phase voltage
is dis-
played
All except for U Phase conductor L and protective conductor PE reversed
is dis-
played
All except for U
Phase conductor L and protective conductor PE reversed
Neutral conductor interrupted (with probe only)
is dis-
played
All except for U L and N are connected to the phase conductors.
?
?
?
N
PE
L
N
PE
L
N
PE
L
N
PE
L
x
N
PE
L
x
N
PE
L
x
N
PE
L
N
PE
L
x
N
PE
L