Installation and Connection
Voltage Measuring Inputs
The device is provided with 4 voltage measuring inputs: three for measuring the phase-to-phase voltages
(
»V12«, »V23« , »V31«
) or phase-to-neutral voltages (
»VL1«, »VL2«, »VL3«
) and one for the measuring of the
residual voltage »
VE
«. With the field parameters the correct connection of the voltage measuring inputs has to
be set:
•
phase-to-neutral (star)
•
phase-to-phase (Open Delta respectively V-Connection)
Make sure that the tightening torque is 1.2-1-6 Nm [11-15 In-lb].
The rotating field of your power supply system has to be taken in to
account. Make sure that the transformer is wired correctly.
For the V-connection the parameter »VT con« has to be set to »phase-to-
phase«.
Please refer to the Technical Data.
EN MRU4 10/09
Page 29
