27
Commissioning and start-up
OperatiOnal manual
MN156001EN October 2015 www.eaton.com
Refer to the following for making the settings:
– Active filters that are connected to the electrical
distribution systems at voltage levels above the unit’s
nameplate voltage rating require a transformer to step
up the voltage to the desired level.
– Auto-transformers, Delta-Delta and Wye-Wye
transformers have no phase shift. Therefore, set
the AF= parameter to 0 degrees.
– If transformers are used with a Delta to Wye
configuration, enter the phase shift.
– Typically transformer manufacturers will indicate the
phase shift using a clock face notation. The Grid side
of the transformer is used as the reference and is set
to zero or 12 o’clock.
– The high voltage side is indicated with a capital letter.
For example, “D” indicates the delta winding is on
the high voltage side. A lower case letter indicates the
winding type of the low voltage side. For example,
“y” indicates a wye wound low voltage side.
Refer to the following table for setting the “AF=”
parameter based on common transformer nameplate
information.
Table 2 . External Transformer AF = Settings
transformer nameplate
unit options aF =
Dy1
30 Lag
Dy2
60 Lag
Dy4
120 Lag
Dy5
150 Lag
Dy6
180
Dy7
150 Lead
Dy8
120 Lead
Dy10
60 Lead
Dy11
30 Lead
CT configuration
1.
For CT Configuration, choose either Yes or No based on
the following:
– Press Yes to perform CT configuration if CT wiring is
connected to the unit.
– Press No if the unit is intended to operate as a Slave
in a parallel system.
2.
If you chose Yes in the preceding step, do one of the
following:
– Press Auto to have the unit automatically detect
CT configuration.
– Press Manual to manually enter the CT configuration.
Manual CT configuration
If you chose Manual for CT configuration, refer to the
following for making the settings on this screen:
