Siemens SENTRON PAC3100, Manual, Page: 86 / 152

Parameterizing
9.2 Parameterizing the operator interface
SENTRON PAC3100
86
Manual, 07/2009, A5E02385159B-01
VOLTAGE INPUTS
Figure 9-4 "VOLTAGE INPUTS" device setting
CONNECTION TYPE Connection types:
3P4W: 3 phases, 4 conductors,
unbalanced load
3P3W: 3 phases, 3 conductors,
unbalanced load
Default value: 3P4W
Use PTs? Measurement with/without voltage transformer
ON/OFF switch: ON / OFF.
ON: Measurement using voltage transformers.
When measuring via voltage transformer, the device
must know the voltage conversion ratio. For this
purpose, the primary and secondary voltages must be
specified in the fields "PT PRIMARY" and "PT
SECONDARY".
When changing from direct measurement to
measurement using voltage transformers, the device
accepts the last set reference measuring voltage as the
secondary voltage and as the primary voltage.
OFF: Measurement direct on the low-voltage
system.
When changing from measurement using voltage
transformers to direct measurement, the device
accepts the last set secondary voltage as the reference
measuring voltage.
Default value: Off
VOLTAGE INPUT Rated voltage of the measuring system. Must be specified if
measuring is done direct on the system without voltage
transformers.
Range: 1 V to 480 V, freely adjustable
Default value: 400 V
The property "VOLTAGE INPUT" is only visible, if
"USE PTs?" is set to " Off".