Eaton HCU2 Quick start guide

Operational manual
Harmonic correction unit (HCU2)
and electronic VAR injector (EVI2) active lters

ii OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY
The information, recommendations, descriptions and safety notations in this document are based on Eaton’s experience and
judgment and may not cover all contingencies. If further information is required, an Eaton sales office should be consulted.
Sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling
policies or other contractual agreement between Eaton and the purchaser.
THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES
OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY
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CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES.
In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability
or other-wise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited
to damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the
use of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the
information, recommendations and descriptions contained herein. The information contained in this manual is subject to
change without notice.

iii
Harmonic correction unit (HCU2) and electronic VAR injector (EVI2) active filters
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Contents
SAFETY PRECAUTIONS ......................1
INTRODUCTION.............................2
Harmonic Correction Unit .................... 2
Electronic VAR Injector ...................... 2
OPERATION ................................3
Home Screen ............................. 3
User Login ................................ 3
System Status ............................. 3
Overall Status Screen...................... 4
Unit Information ........................ 4
System Information. . . . . . . . . . . . . . . . . . . . . . 4
Parallel Unit Status ........................ 4
Unit Configuration Screen .................. 4
Network Setup ......................... 5
Unit Setup............................. 5
Voltages and Temperature .................. 5
Voltages............................... 5
Temperatures .......................... 5
Unit Status .............................. 5
Metering ................................. 6
Currents ................................ 6
Fundamental Current ...................... 6
Performance............................. 7
Power .................................. 7
Waveforms ............................... 7
Available Scope Data ...................... 8
Phasor Diagram .......................... 9
Event Log ................................ 9
System Settings ...........................10
Compensation Mode Screen (HCU2 type) .....10
Compensation Mode Screen (EVI2 type).......11
Miscellaneous Settings ................... 12
Voltages ............................... 13
Parallel Configuration ..................... 14
Harmonic Enable (HCU2 type) .............. 14
Unit Settings ............................. 14
Basic Setup ............................ 15
CT configuration ......................... 15
Manual CT configuration................. 16
Automatic CT configuration .............. 16
Brightness and Advanced HMI Settings ...... 19
Input Configuration....................... 19
Output Configuration ..................... 20
External Interfaces ....................... 20
Modbus TCP/IP Address Setup ............... 21
Set up users with the User Manager .......... 21
Change a password ...................... 22
Delete a user ........................... 22
COMMISSIONING AND START-UP.............23
Commissioning the unit .................... 23
Adjust date and time ..................... 24
Check fan .............................. 24
System Integrity Test ..................... 24
Parallel System Setup .................... 26
External transformer ..................... 26
CT configuration ......................... 27
Manual CT configuration................. 27
Automatic CT Configuration .............. 28
System Mode Setup (HCU2 type)............. 30
System Mode Setup (EVI2 type).............. 30
Admin password setup ..................... 32
Test Run. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Catalog Numbering System ................. 34
TROUBLESHOOTING........................34
WARRANTY ...............................36

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Harmonic correction unit (HCU2) and electronic VAR injector (EVI2) active filters
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Safety information
Important information
Read these instructions carefully and look at the equipment
to become familiar with the device before trying to install,
operate, service or maintain it. The following special
messages may appear throughout this bulletin or on the
equipment to warn of potential hazards or to call attention
to information that clarifies or simplifies a procedure.
The addition of either symbol to a “Danger” or “Warning”
safety label indicates that an electrical hazard exists which
will result in personal injury if the instructions are not
followed.
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.
DANGER
DANGER indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING
WARNING indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
NOTICE
NOTICE is used to address practices not related to
physical injury.
ote:N Electrical equipment should be installed, operated,
serviced and maintained only by qualified personnel.
No responsibility is assumed by the manufacturer
for any consequences arising out of the use of this
material.
A qualified person is one who has skills and
knowledge related to the construction, installation,
and operation of electrical equipment and has
received safety training to recognize and avoid
the hazards involved.
As standards, specifications and designs change
from time to time, please ask for confirmation of
the information given in this publication.

1
Safety precautions
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Safety precautions
Installation, wiring, testing and service must be performed
in accordance with all local and national electrical codes.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR
ARC FLASH
• Apply appropriate personal protective equipment
(PPE) and follow safe electrical work practices. See
NFPA 70E in the USA, CSA Z462, or applicable local
standards
• This equipment must be installed and serviced only
by qualified electrical personnel
• Do not exceed the device’s ratings for maximum
limits.
• Ground equipment using the ground connecting
point provided before turning on any power supplying
this device
• Turn off all power supplying this device and the
equipment in which it is installed before working
on the device or equipment
• After removing power, wait for 15 minutes to allow
the capacitors to discharge prior to opening the doors
or removing covers
• Always use a properly rated voltage sensing device to
confirm power is off
• Replace all devices, doors, and covers before turning
on power to this equipment
• Carefully inspect the interior for tools left behind
before closing and sealing the door
Failure to follow these instructions will result in death
or serious injury.

2
Introduction
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Introduction
The product can be provided in either of two types, an
Harmonic Correction Unit (HCU2) or an Electronic VAR
Injector (EVI2). Both types are to be installed as described
in this manual. These products are both referred to as an
active filter in this manual. For the most part, operation is
the same for both types. Where there are differences, they
are indicated by [HCU2] or [EVI2] in the topic heading. For
example, the information in Harmonic Enable [HCU2 type]
on page 14 pertains to HCU2 type active filters.
Harmonic correction unit
Active Harmonic Filters (HCU2) are static power electronic
products that employ digital logic and IGBT semiconductors
to synthesize a current waveform that is injected into the
electrical network to cancel harmonic currents caused
by nonlinear loads. HCU2 employ current transformers
to measure the load current to determine the content of
harmonic current present. By injecting the synthesized
current, network harmonic currents are greatly mitigated,
thus reducing the heating effects of harmonic current and
reducing voltage distortion to permit other equipment to
operate properly and enjoy a long product life span.
HCU2 also have the ability to correct for poor displacement
power factor (DPF) and for mains current balancing. DPF
correction can be provided for either leading (capacitive) or
lagging (inductive) loads that cause poor DPF. Mains current
balancing is achieved by measuring the negative sequence
current present and injecting the inverse negative sequence
current to balance the current for the upstream network.
Electronic VAR injector
Electronic VAR injector (EVI2) are static power electronic
products that employ digital logic and IGBT semiconductors
to synthesize a current waveform that is injected into the
electrical network to cancel load induced poor displacement
power factor (DPF), phase current unbalance, and
flicker. DPF correction can be provided for either leading
(capacitive) or lagging (inductive) loads that cause poor
DPF. Mains current balancing is achieved by measuring the
negative sequence current present and injecting the inverse
negative sequence currents to balance the current for the
network. Flicker control is provided by rapid detection and
injection of reactive current (VARs) to prevent the reactive
current from over loading the network that causes rapid
voltage deviations identified as flicker.
EVI2 also have the ability to monitor the network voltage
on which they are connected and determine the proper
amount of VARs to either raise the network voltage or
lower it. EVI2 will inject leading VARs to raise the voltage
and lagging VARs to lower the voltage. Entry of appropriate
parameters will keep the network within its stated voltage
tolerance level.

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Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Operation
This chapter provides information operation of the active
filter. It covers additional settings that you can configure after
commissioning. It includes descriptions of parameters and
information available on the display as well as event logs.
Home Screen
When first energized, the HMI displays the Home screen.
To return to the Home screen, press the Home icon at the
bottom on any of the screens. To change parameters, you
must be logged in as an Admin level user. From the Home
screen, you can access the following:
• System Status: Displays screens providing an overview
of the system status
• Metering: Displays screens that provide measured values
of the unit, system, and electrical distribution system
• Waveforms: Displays screens that graphically represent
various values measured
• Event Log: Displays a list of all events that occurred with
the unit
• System Settings:Allows changes to be made to the
system parameters. When operating in parallel, all
systems settings must match for each unit in the parallel
system
• Unit Settings: Allows changes to the unit parameters
• Commission Unit: Provides a step-by-step procedure to
commission the unit
Note: Once the unit is commissioned, you do not need
to perform this procedure again.
• User Login: This is where you log into the unit to change
parameters
• Start System/Stop System: This icon toggles between
Start System when inactive and Stop System when
active. Start System activates the unit, or in parallel
operation, it starts the entire system. Stop System
stops the unit, or in parallel operation, it stops the
entire system.
User Login
For information on setting up users, refer to Set up users
with the User Manager on page 21. To log in:
1. Press User Login.
2. Press the Username field. Type your user name on the
keypad and press Enter.
3. Press the Password field and enter your password.
4. Press Log In.
System Status
System Status screens display information on the unit’s
status. Also when installed as a parallel system, information
for the entire active filter system is provided. To navigate
through the screens, press the up or down arrow. To return
to the Home screen, press the Home icon. An active filter
operating as a standalone unit has four System Status
screens. Active filters operating in a parallel system have
five System Status screens.

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Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Overall Status Screen
The Overall Status screen provides information on the
status of the unit. When connected in parallel with other
active filters, it provides information on the status of the
entire parallel system.
Unit Information
Unit Status: Indicates whether the unit is in Run or
Stopped condition.
Unit Rating: Indicates the amperage rating of the unit.
Derating: Indicates if the unit has been derated by a
percentage.
Output: Indicates the total output current of the unit.
Unit ID: Indicates the unit unique identification number.
Each unit in a parallel system must have a unique unit ID.
System Information
System Status: Indicates the status of the system.
Available Cap: Indicates the total capacity of units in the
parallel system currently available, which includes all units
currently running (actively compensating) and units in
stand-by.
Active Cap: Indicates the total capacity of units in the
parallel system currently running (actively compensating).
Output: Indicates the output current of the system in
amperes.
Master ID: Indicates the unit ID of the unit that is currently
acting as the Master.
Priority: Indicates the priority group that is operating.
Parallel Unit Status
Parallel Unit Status displays when Network is selected in
System Settings, Parallel Configuration.
The Parallel Unit Status provide general operating condition
of each unit in the parallel system.
Selecting Synchronize System Settings synchronizes the
System Status settings for all networked parallel units in the
system.
Unit Configuration Screen
The Unit Configuration screen provides the configuration
information for the unit.
HMI Version: Displays the HMI software version that is
loaded on the HMI.
Control DSP Version: Displays the software version
installed on the Control DSP.
Protection DSP Version: Displays the software version
installed on the Protection DSP.

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Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Network Setup
IP: Displays the IP address for the TCP/IP Ethernet
connection.
Subnet: Displays the unit’s subnet address.
See Unit Settings on page 14 for instructions on
changing the Network Setup values.
Unit Setup
Unit Type: Indicates whether the unit is an active filter
or an electronic VAR compensator.
Unit Size: Displays the unit amperage rating.
Nominal voltage and frequency: Displays the system
nominal voltage and frequency settings.
CT Conn.: Indicates the number of CT’s connected to
the unit.
CT Ratio: Displays the CT ratio used.
CT Configuration: Indicates whether the CT’s are located on
the Source or Load side of the active filter system.
Voltages and Temperature
Voltages
Line Voltage: Displays the three-phase average of the
incoming line voltage to the unit.
Line Frequency: The measured source frequency.
DC Bus Top: The measured DC voltage of the top
DC bus section.
DC Bus Bot: The measured DC voltage of the bottom
DC bus section.
Temperatures
All temperatures are displayed in degrees Celsius.
Inlet: Unit’s inlet air temperature.
Unit Top: Outlet air temperature of the electronic
air section.
Control Board: Air temperature surrounding the Control
Printed Circuit Board.
IGBT L1: Temperature of phase L1 inverter IGBT.
IGBT L2: Temperature of phase L2 inverter IGBT.
IGBT L3: Temperature of phase L3 inverter IGBT.
Unit Status
Uptime: Elapsed time from the last energization.
Total On Time: Total time the unit has been energized.
Total Run Time: Total time the unit has been in Run
condition.
Average Output L1: Average output current for L1 phase.
Average Output L2: Average output current for L2 phase.
Average Output L3: Average output current for L3 phase.

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Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Metering
Currents
Total Load: Total load current in amperes RMS.
Load Harmonics: Total load harmonic current in
amperes RMS.
Output Harmonics: Harmonic current output of the unit in
amperes RMS for harmonic mitigation.
Output Fund: Output current at the fundamental frequency
for power factor correction and/or load balancing.
Total Output: Total output current of the unit in
amperes RMS.
Source: Total source current in amperes RMS.
Fundamental Currents
Reactive (PF): Displays per phase average reactive current
of the load and output in amperes RMS.
Negative sequence: Negative sequence current of the load
and output in amperes RMS.
Fund current Req: Fundamental current required per phase
to achieve set point.
Fund Current Out: Displays fundamental current produced
per phase.
Load Balancing: Indicates whether the Load Balancing
mode is ON or OFF.
PF Mode: Indicates that the Power Factor correction mode
is ON or OFF.

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Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Performance
THDi: Total Harmonic Distortion of the current as a
percentage of fundamental per phase at the Source
and the Load.
THDv: Total Harmonic Distortion of the voltage as a
percentage of fundamental per phase at the Source.
DPF: Displacement Power Factor of the Source and Load.
Load Current: Fundamental current of the Load per phase.
Source Current: Fundamental current of the source per
phase
Voltage: Line-to-Line voltage per phase.
Power
This screen displays three-phase values of the source, load,
and output of the Harmonic Correction Unit.
Waveforms
The Waveforms screens display system information in three
formats: Oscilloscope, Bar Graph, and Phasor diagram.
The oscilloscope screen can display up to three different
values at the same time. You can touch one of the boxes at
the top of the oscilloscope screen to display a table of the
16 different values available.
Mag: The magnifying glass icons next to Mag increase or
decrease the amplitude scale.
t: The magnifying glass icons next to “t:” increases or
decreases the time scale.
If you have a USB drive inserted into the USB port next to
the HMI, you can click the camera icon to save the screen
in a PDF format.

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Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Available Scope Data
Vbus: Voltage of the total DC bus.
V1: Line to line voltage of L1 to L2
V2: Line-to-line voltage of L2 to L3
V3: Line-to-line voltage of L3 to L1
Iref1: Current reference L1
Iref2: Current reference L2
Iref3: Current reference L3
Iout1: Current output L1
Iout2: Current output L2
Iout3: Current output L3
Isrc1: Current source L1
Isrc2: Current source L2
Isrc3: Current source L3
Iload1: Current load L1
Iload2: Current load L2
Iload3: Current load L3
Use the top left drop-down to select the value to be
analyzed.
H1, the fundamental value is constantly displayed. You can
display a specific harmonic order value by pressing the left
or right arrows at the top of the screen. You can adjust the
amplitude scale with the magnifying glass icons. The values
you can display are:
• V12: Bar graph harmonic analysis of the voltage of
L1 to L2.
• V23: Bar graph harmonic analysis of the voltage of
L2 to L3.
• V31: Bar graph harmonic analysis of the voltage of
L3 to L1.
• Isrc1: Bar graph harmonic analysis of Current source L1.
• Isrc2: Bar graph harmonic analysis of Current source L2.
• Isrc3: Bar graph harmonic analysis of Current source L3.
• Iload1: Bar graph harmonic analysis of current load L1.
• Iload2: Bar graph harmonic analysis of current load L2.
• Iload3: Bar graph harmonic analysis of current load L3.

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OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Phasor Diagram
V12: Line-to-line voltage of L1 to L2.
V23: Line-to-line voltage of L2 to L3.
V31: Line-to-line voltage of L3 to L1.
Iref1: Current reference L1.
Iref2: Current reference L2.
Iref3: Current reference L3.
Iout1: Current output L1.
Iout2: Current output L2.
Iout3: Current output L3.
Isrc1: Current source L1.
Isrc2: Current source L2.
Isrc3: Current source L3.
Iload1: Current load L1.
Iload2: Current load L2.
Iload3: Current load L3.
Event Log
The Event Log displays events that occurred. Touch an event
to select it. Then, press the magnifying glass icon to display
the details for that event.
You can save the Event Log to a USB storage device. Once
it is connected, press this icon to save the log:

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Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
System Settings
Within System Settings, you can change parameters for the
system. When the unit is part of a parallel system, all of
these settings for each unit must match.
System Settings screen (HCU2 type)
System Settings screen (EV12 type)
Press Login to display the Login screen.
Press Restore if you want to reset parameters to the
default values.
Press the screen name to access a screen.
Compensation Mode Screen (HCU2 type)
Harmonic Mode: Activates/Deactivates the harmonic
correction mode.
PF Mode: Activates/Deactivates the Power Factor
correction mode.
Optimized PF: When set to OFF, the unit maintains the
PF cos (phi) setting. When set to ON and the load is less
than the PF cos(phi) setting, the unit corrects the power
factor to PF cos (phi). If the load PF is greater than the
setting, the unit does not compensate unless the power
factor is set to maintain a Lag power factor and the load
becomes leading. Then, the unit corrects the power factor
to a PF cos (phi) of 1.00. If the PF cos (phi) is set to Lead
and the power factor of the load is lagging, the unit corrects
to a PF cos (phi) of 1.00.
Example: With a PF cos (phi) set to 0.98 Lag, the unit
maintains a Power Factor of 0.98 Lag when the corrected
load is lagging. If the power factor improves to 0.99, no
compensation is provided. If the connected load produces
a leading power factor, the unit corrects the power factor
to 1.00.
PF cos (phi): Target power factor setting.
Load Balancing: Activates/deactivates load balancing mode.
Harmonic Priority: Sets the percentage of the unit’s output
to harmonic mitigation when the system is at or over
maximum capacity.
Fund: Displays the percentage of the unit’s rating that is
dedicated to correcting fundamental current as the result
of the Harmonic Priority setting. This is mathematically
calculated based on the Harmonic Priority setting.
Harmonic Priority only affects the unit when harmonic mode
and at least one other mode of operation is enabled. When
the total current output of the active filter required exceeds
the unit’s rating, harmonic priority determines which mode
has priority. With harmonic priority set to 100%, the unit
outputs all current necessary to correct the harmonic
content. Any output capacity left over is used for correcting
PF and/or load balancing. Conversely, with harmonic
priority set to 0%, the unit outputs the fundamental current
required for correcting power factor and/or load balancing.

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OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Any capacity left over is used for harmonic mitigation.
When the unit is sized to correct both harmonic current
and fundamental currents, PF, and/or load balancing, this
parameter has no effect.
The total percentage of adding Harmonic priority to
fundamental priority can be greater than 100%. The rated
output current of the active filter is equal to the rms-sum
of the harmonic and reactive current injected. The following
table provides a representation of this relationship. All
values are in percentage of rated output current.
Dual mode output percentiles
Harmonic
current
drawn
by load
100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0%
Maximum
reactive
current
available
0% 44% 60% 71% 80% 87% 92% 95% 98% 99% 100%
You can use the following formulas to calculate this current
relationship:
IO/P2= Ih2+ Ir2
or
IO/P = SQRT(Ih2+ Ir2)
Where
• IO/P is the total output current of active filter
• Ihis the injected harmonic current of active filter
• Iris the injected reactive current of active filter
Use these percentages to determine the amount of current
available for each function. Multiply the percentage by the
active filter rated current to obtain the approximate amount
of correction provided by the active filter for each function.
Compensation Mode Screen (EVI2 type)
Reactive Mode—PF: Activates/Deactivates the Power
Factor correction mode. With PF mode selected, additional
parameters available for the PF mode are displayed.
Optimized PF: When set to OFF, the unit maintains the
PF cos (phi) setting. When set to ON and the load is less
than the PF cos (phi) setting, the unit corrects the power
factor to PF cos (phi). If the load PF is greater than the
setting, the unit does not compensate unless the power
factor is set to maintain a Lag power factor and the load
becomes leading. Then, the unit corrects the power factor
to a PF cos (phi) of 1.00. If the PF cos (phi) is set to Lead
and the power factor of the load is lagging, the unit corrects
to a PF cos (phi) of 1.00.
Example: With a PF cos (phi) set to 0.98 Lag, the unit
maintains a Power Factor of 0.98 Lag when the corrected
load is lagging. If the power factor improves to 0.99, no
compensation is provided. If the connected load produces
a leading power factor, the unit corrects the power factor
to 1.00.
PF cos (phi): Target power factor setting. The power factor
can be set for either a leading or lagging cos(phi).
Load Balancing: When ON, the unit corrects for load
imbalance (negative sequence current).
Reactive Mode—V-Reg: Voltage Regulation Mode. Voltage
regulation mode monitors the voltage and adjusts the
reactive current injected to maintain a voltage level.
V-Reg Set Point: Sets the desired voltage to be maintained.

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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.

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OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Voltages
NOTICE
HAZARD OF UNINTENDED EQUIPMENT OPERATION
Enter the External Transformer data according to the
transformer specification.
Failure to follow these instructions may result in
damage to the active filter or other equipment on same
electrical system.
Auto Detect: Instructs the controller to determine nominal
grid voltage and frequency when power is applied.
Nominal Voltage: With Auto Detect ON, the nominal
voltage is automatically entered. With Auto Detect OFF the
nominal voltage level applied at the input power connection
must be entered. Nominal voltages at 480 V, 415 V, 400 V,
and 380 V are automatically detected. For other nominal
operating voltages, enter them manually.
Nominal Freq.: With Auto Detect ON, the nominal
frequency is automatically entered. With Auto Detect
OFF, the nominal frequency applied at the input power
connection must be selected.
Ratio Grid Enter the voltage rating of the transformer on the grid side.
(Ratio) Unit Enter the voltage rating of the transformer on the active
filter side.
Phase Grid The is set to zero. It is not an adjustable parameter.
(Phase) Unit Touching this data box displays the available phase shift
options for the transformer.
The External Transformer section must be changed if there
is an external transformer between the Harmonic Correction
Unit and the voltage bus being corrected. This parameter is
not used for the integrated transformer units. These units
are identified by a rating of 600 or 690 V on the nameplate.
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 the
AF = parameter is set to 0 degrees. If transformers are
used with a Delta to Wye configuration, the phase shift
must be entered. Typically transformer manufacturers
indicate this in 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. “D” indicates the delta winding is on the high
voltage side. A lower case letter indicates the winding type
of the low voltage side; “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 1. 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

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Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Parallel Configuration
Single: Select single for a standalone unit not operating in
parallel with another active filter.
Network: Select if all units that are operating can be
networked together for parallel operation.
Legacy: Select if the unit is being added to an existing
active filter system that does not have parallel networking
capability. When selected, the total capacity of the active
filter system must be entered in the Total System Capacity
text box.
When Network Parallel is selected, two additional
parameters are displayed. These parameters are used if the
system is designed for redundant operation.
Select Parallel Rotation OFF if the system is designed with
parallel for capacity only or if the units are to equally share
the load at all times.
Select Parallel Rotation ON if the additional units should
be cycled through with the minimum number operating to
support the correction required. This is based on the Parallel
Priority Group parameter located under Unit Settings,
Basic Setup.
Set the Rotation Frequency to the time the lowest priority
group is off until the next priority group is off. With this
setting, the units that are on or off rotate based on the
total capacity required by the load to achieve set point.
Harmonic Enable (HCU2 type)
On this screen, you can select which individual harmonic
orders are compensated.
When ON, the harmonic order compensation is enabled.
Touching any harmonic order toggles it off or on.
Unit Settings
Unit settings are individual settings for the specific unit. This
section covers the parameters you can configure.

15
Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Basic Setup
Output Enabled: When ON, the unit provides corrective
current as necessary. When OFF, the unit does not provide
corrective current. Output Enabled must be set to the ON
condition after stopping the unit in parallel systems.
Derating Factor: Percentage of rated output current that is
subtracted from maximum output to compensate for high
altitude. The unit must be de-rated if the unit is installed at
an elevation over 1,000 meters above sea level. Derate
by 1% for every 100 meters over 1,000 meters above
sea level.
Unit ID: For parallel systems, each unit in the parallel
system must have a unique unit identification number.
Parallel Priority Group: Identifies the parallel priority group
to which the unit belongs.
Fault Restart Time: How long in seconds a restart of the
active filter is delayed after the occurrence of a non-critical
fault. The minimum is 10 seconds.
Reset contactor filter trip: Resets the contactor if a filter
trip occurs while the unit is in STOP condition.
CT configuration
The CT Configuration screen provides information on how
the unit is currently configured for the connected CTs.
If needed, you can configure additional CTs manually or
automatically.
CT Configuration: Displays the number of CTs used.
CH1, CH2, and CH3 refer to which channels are used on the
CT board.
Conn.: Indicates the setting for which phase and polarity
the CT is connected for that channel.
Cal: When Automatic CT detection is used and the CTs
are connected on the source side, the unit performs a CT
calibration. The calibration value is indicated.
Ratio: Displays the parameter setting of the CTs installed.
Position: Displays the position of the CTs in relationship to
the active filter.
Configure CTs: When selecting Auto, the unit detects the
CT connection type for each input, CT ratio, and position.
Refer to Automatic CT configuration on page 16.
Selecting Manual displays a Modify CT Configuration screen
to allow manual setting of these parameters. Refer to
Manual CT configuration.

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Operation
OPERATIONAL MANUAL MN156001EN October 2015 www.eaton.com
Manual CT configuration
NOTICE
HAZARD OF UNINTENDED EQUIPMENT OPERATION
Verify that the CT Configuration is entered exactly as the
CTs are installed on the electrical distribution system.
Failure to follow these instructions may result in
damage to the active filter or other equipment on
same electrical system.
Channel is the location where the CT secondary wiring is
connected to the CT board.
When you touch the Connection data block, you scroll
through the available options:
L1+, L1-, L2+, L2-, L3+, L3- or None.
L1, L2, L3 and None describe which phase the CT is
connected.
The polarity of the CT connection is identified as “+” or “-”.
• “+” indicates H1 of the CT is closest to the source,
• “-” indicates H1 of the CT is closest to the load.
CT Calibration allows for adjusting for errors.
CT Ratio: Touching the data box brings up a numerical
keypad to enter the primary ratio of the CTs being used.
Position: Select Load if the CTs are measuring only the
connected loads to be corrected. This option is not available
for systems operating in parallel. Select Source if the CTs
are measuring the current of all loads being corrected and
the active filter current.
CT Secondary Rating: The rating of the CT secondary that
is installed.
Automatic CT configuration
An active filter that is connected to an electrical distribution
system at a voltage above the unit’s nameplate voltage
rating must have the external transformer parameters
properly set before performing the Automatic CT
Configuration. Refer to External transformer
on page 26.
NOTICE
HAZARD OF UNINTENDED EQUIPMENT OPERATION
Verify that the External Transformer parameters are correctly
entered before performing the Automatic CT configuration
procedure.
Failure to follow these instructions may result in
damage to the active filter or other equipment on
same electrical system.
To perform Automatic CT Configuration, do the following:
1. In the CT Ratio field, enter the primary CT ratio.
2. In the CT Secondary Rating field, select either 1 A or 5
A based on the secondary rating of the CTs installed.
3. In the Select channels CTs are connected to field,
select the channels used to connect the CT secondary
wiring to the CT board of the unit. This information
should be provided by the installer. See Installation
Manual for CT installation details.
An information screen is displayed indicating that the
unit is ready to perform the automatic CT detection.