7. CONNECTIONS
Theinstrumentconnectionsarecarriedoutthrough the
following connectors, as indicated in the picture:
a 3-pin female connector (power supply)
a 6-pin female connector (inputs)
a 8-pin female connector (outputs)
WARNING!
Before making any connection, check
if the instrument is switched OFF.
7.1 POWER SUPPLY
WARNING!
Before connecting the power supply, check if it corresponds to the plated
voltage value (80-260 VAC or 19-60VDC).
The instrument does not have a protection fuse on the power supply, therefore the installer must protect it
with a current bracker and an overcurrent protection device (315mA delayed fuse, T type).
7.2 ANALOG INPUTS
The analog inputs allow the connection of 100 mV/kA signal Rogowski coils with 3000A fullscale. On request,
the input value can be customized to allow the connection of rigid or flexible Rogowski coils with fullscale
different from 3000A. Each one of the 3 inputs has 2 terminals; the ground is common to all the outputs.
7.3 ANALOG OUTPUTS
Two different analog outputs types are available: on DC current (standard version), or on DC voltage (on request).
Each one of the 4 inputs has 2 terminals; the ground is common to all the outputs (see picture 7.3).
WARNING!
In case of analog output on DC current, the maximum value of delivered vol-
tage is 10V, therefore the load must never exceed 300 Ohm.
WARNING!
In case of analog output on DC voltage, the internal resistance is 500 Ohm,
therefore the load must never be lower than 100 kOhm.
The maximum output value of 20mA (in case of analog
output on DC current), and of 10 VDC (in case of
analog output on DC voltage), on the SUM output,
corresponds to the sum of the 3 clamps fullscale (e.g.:
3000A clamps, SUM f.s.=9000A).
The instrument is calibrated for the declared accuracy;
if a further fullscale regulation is necessary, remove
the instrument panel, using a screwdriver (see picture
7.2), and operate on the trimmer located inside the
instrument (see picture 7.4, OUT 1, 2, 3, SUM).
•
•
•315mA
fuse, to be
mounted ifthe
neutral is not
identified.
LED ON = Power supply ON
LED OFF = Power supply OFF
Pict. 7.1 - Connections
Pict. 7.2 - Front panel opening
