Eaton HCU2 User Manual

12
Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
V-Reg Gain: Adjusts the response time of the voltage
regulation. The higher the percentage of V-Reg Gain, the
faster the response is. Faster response increases the
potential for voltage instability of the electrical system.
PF Current Feedforward: When OFF, CTs are not required
for this application. The unit maintains the V-Reg Set Point
based on the unit’s terminal voltage.
When ON, CTs are required for this application. The unit
provides the reactive current required based on the PF cos
(phi) set point resulting from rapid changes in the load.
Adjustments to the reactive power are implemented to
maintain the V-Reg Set Point.
PF cos (phi) is only displayed when PF current Feedforward
is ON. PF cos (phi) is set to the appropriate value based on
the source resistance.
Load Balancing can also be selected on this screen. Load
Balancing requires the installation of CTs.
Reactive Mode—React: Reactive mode provides leading
or lagging kVAR based on the Reactive Target. React Mode
does not require the installation of CTs.
Reactive Target can be set either based on kVAR or
amperes. Reactive Target can be set remotely through
MODBUS.
Load Balancing can also be selected on this screen. Load
Balancing requires the installation of CTs.
Miscellaneous Settings
Auto Start: The unit shuts down when the line voltage
drops below 85% of nominal. With Auto Start ON, the
unit automatically returns to RUN condition when the line
voltage is within 85% of nominal. The unit must be in RUN
condition during the event to return to RUN condition.
Auto Start Delay: Delay of Auto Start feature in seconds.
The minimum is 10 seconds.
Power Save ON: Percentage of rated output current above
which the unit starts up. The default value is 15%. It must
be higher than the Power Save Off percentage.
Power Save OFF: Percentage of rated output current below
which the unit shuts down. The default value is 10%. It
must be lower than the Power Save On percentage.

Eaton HCU2 Specifications

General

Brand	Eaton
Model	HCU2
Category	Water Filtration Systems
Language	English