2
GMC-I Messtechnik GmbH
Connections Overview
1 Coupling plug to the outlet of a
3-phase PRCD
2 Earthing contact plug to the outlet of a
single-phase PRCD
3 Probe socket for contacting the on/off
key on the PRCD
4 Earthing contact socket to the inlet of a
single-phase PRCD
5 Loop for measuring protective conductor
current with a current clamp transformer
6 CEE socket to the inlet of a 3-phase
PRCD
7 Mains power cable with earthing contact plug
8 3-phase mains power cable with
CEE outlet (1P+N+PE 16 A-6h)
9 PRCD inlet sockets connected in parallel
to sockets 4 and 6 – for connecting the
PROFITEST MXTRA
during protective con-
ductor and insulation measurements
10 PRCD outlet sockets connected in paral-
lel to plugs 1 and 2 for connecting the
PROFITEST MXTRA
during protective con-
ductor and insulation measurements
11 Five replaceable fuses
Instrument Overview
8
7
6
4
1
2
10
3
9
Mains Connection
To PRCD Outlet
To PRCD Inlet
(
PRCD IN
)
5
11
(
PRCD OUT
)
Fault Selection
Mains disconnect,
1~OFF/3~OFF
– For RISO measurement
Mains power on,
1~ON/3~ON
– For fault simulation
– For RLO measurement
Phase LEDs
Phase Interrupt
Reversed Wires
Orange positions: testing at single-phase PRCDs
Green positions: testing at 3-phase PRCDs
Mains
– For tripping test with I
Nom
and measurement of time to trip
Connection
PROFI
TEST
⏐
P
RCD
Operating and Connections Overview