Selco
C6200 FlexGen
Revision: 03-06-2014
Page 8 of 24
External switching of the supply (e.g. to power the units on and off) should be done by making
or braking positive supply (terminal 30). Do not use terminal 32 to make and break the
supply.
5.2 Voltage Inputs
The AC voltages connect to the BUS BAR VOLTAGE and GENERATOR VOLTAGE plug-in
terminals.
The voltage inputs can operate with high voltage (up to 690 V AC nominal), so precaution
must be taken to avoid electrical shock and personal injury. Do not touch the voltage input
plug-in terminal unless you are absolutely sure that both the busbar and generator is off. The
generator should be stopped and blocked against starting
–
the busbar should be dead. Also
make sure that there is no risk of another power source being connected to the busbar while
you are working with the voltage inputs.
Voltages above 690 V AC are supported through use of external transformers (PT). When using
PTs please ensure that the PT does not affect the phase of the AC voltage measurement. Phase shift
in the PT will directly affect the calculation of power factor, and thereby the calculation of active
and reactive currents and loads.
The phases L1, L2 and L3 of the busbar and generator voltage must be connected to L1, L2 and L3
of the busbar/generator voltage input plug-in terminals. Intermediate 2 A slow-blow fuses should be
inserted between the individual phases and the related voltage inputs.