SIMEAS-T - Transducer without auxiliary power
16
Secondary circuits: For devices in which the highest voltage of the measuring circuit is
500 V, cables with basic isolation in relation to the maximum voltage in each secondary
circuit suffice.
For devices with voltages that exceed 500 V in the measuring circuit, the isolation of the
cable in the secondary circuits must correspond to a basic isolation for the highest
voltage occurring in the measuring circuit.
11 Commissioning
First ensure that the operating data matches the values on the rating plate. No changes
may be made on the transducer. After a warm-up time of 15 minutes, the transducer is
ready for operation and keeps within the error limits.
•
Measurement option for the output current and load voltage. Before connecting
an ammeter to the output side of the transducer, the primary side should be
switched off because the voltage at terminals 31 and 32 rises to a maximum of
30 V DC during the interruption of the output current I
A
.
•
Measurement of the output current (output signal I
A
): Disconnect the line from
terminal 31(+) or 32(-), and connect the ammeter in series there.
•
Measurement of the load voltage (output signal I
A
): Connect voltmeter to
terminals 31(+) and 32(-).
12 Maintenance
The output signal can be tested in a laboratory six months after commissioning and
subsequently every two years (section "Calibrating and testing"). The device has to be
opened for this. Apart from that, the transducer requires no maintenance.