Power-Tronics SE6000B-3P User manual

© 2014 Power-Tronics, Inc.
The Power-Tronics SE6000B-3P 3-Phase
Static Exciter is a self-contained complete
Static Exciter. The SE6000B-3P 3-Phase
Static Exciter is designed for continuous
operation at up to 250vdc at 600adc!
The SE6000B-3P is uniquely designed to
sit in a compact footprint while being
passively convection cooled for a long
service life. Because of its unique
modular design, the SE6000B-3P
minimizes downtime should a repair ever
be necessary! The SE6000B-3P’s
compact design allows a wide variety of
installation methods, including installations
where space is at a premium.
The SE6000B-3P is a time-proven design,
utilizing high-reliability components and a
unique modular design to simplify repair.
This product also features loss of sensing
protection. If the sensing voltage is lost,
the unit will shut down to prevent
catastrophic damage caused by runaway
voltage!
The SE6000B-3P is also capable of
parallel operation with other generators or
with a utility buss. Power-Tronics’ wide
variety of optional accessories also allows
the SE6000B-3P to be remotely operated
by dry contact switching or by a PLC
controller!
The SE6000B-3P is designed to provide a
lifetime of service and is specifically built to
minimize failures and potential downtime!
SE6000B-3P
3-Phase Static Exciter
Specifications
Input Voltage: 208 - 240vac, 3ø
Sensing Voltage: 120vac, 3ø
Frequency: 50 or 60 Hz
Voltage Regulation: +/- 1% From NL to FL
Parallel Operation Yes
Output Voltage: 0-250vdc @ 240vac input
Maximum Continuous Output: 600adc
Minimum Field Resistance: .42Ω @ 250vdc output
Regulation Type: Flat Response
Physical Size: 32 x 36 x 12 in.
Weight: 95 lb.
Voltage Regulator: VM120-3C
Firing Module: FM4
Internal Build-Up Provisions: Optional
Repairable: Yes
Internal Protection: Fuses, cartridge type
External Voltage Adjustment: Yes
Loss Of Sensing Protection: Yes

© 2014 Power-Tronics, Inc.
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Table of Contents
Introduction and Functional Description:....................................................................3
Determining Application Sizing:...................................................................................4
Connection Diagram:.....................................................................................................6
Connection Diagram for Models With Optional Internal UIC200:..............................7
Creating an External Flashing Circuit:.........................................................................8
SERCP-3P Removable Control Panel:..........................................................................9
Initial Setup and Commissioning:...............................................................................11
Application Troubleshooting:......................................................................................12
Bench Check Procedures:...........................................................................................13
Installation Warranty Form:.........................................................................................14
Product Warranty Certificate:......................................................................................15

© 2014 Power-Tronics, Inc.
3
Introduction and Functional Description
Caution: Read This Installation
Manual Carefully and Entirely!
Warning: Do not use digital equipment to read voltage, Hz, or amperage
during this installation. Use only Analog sensing equipment! Failure to do so
may result in damage to equipment or in personal injury!
ALWAYS perform all setup procedures off-line
ALWAYS wear eye protection
ALWAYS strip wire insulation properly or use insulated connectors
ALWAYS use analog metering equipment when setting up the regulator
ALWAYS ensure the static exciter receives ample airflow
ALWAYS use adequate fusing
NEVER hold the static exciter in your hand or lap when energized
NEVER install the static exciter in a place it can get wet or is exposed to the elements
NEVER mount the static exciter over a screw, bolt, rivet, seam, or other fastener
NEVER remove the regulator cover while the unit is in operation
NEVER insert a screwdriver or other object under the regulator cover
NEVER touch any exposed part of the SE6000B-3P during operation (LIVE HEATSINKS)
NEVER install a switch in the DC portion of the static exciter’s wiring
NEVER USE A DIGITAL FREQUENCY METER (It can give a false reading!)
Functional Description
The SE6000B-3P 3-Phase Static Exciter is the result of over 20 years of engineering efforts and offers
high-demand features at a competitive price point. The SE6000B-3P is a proven design and is
engineered to greatly simplify setup while offering extreme reliability. When properly installed, the
SE6000B-3P 3-Phase Static Exciter is designed to provide a lifetime of service.
A Generator voltage regulator has several automated tasks it must perform in order to provide reliable,
clean, and regulated electricity. It must regulate the terminal voltage within its design specifications
and protect both itself and the generator should a fault situation arise.
The SE6000B-3P 3-Phase Static Exciter is designed to replace older obsolete static exciters or
rotating exciters with a minimum of connections and a minimum of required installation space. The
SE6000B-3P 3-Phase Static Exciter contains an internal filter for voltage sensing, internal field-
replaceable 600A fusing, and internal DC field noise suppression. The SE6000B-3P is also designed
to be user-serviceable should a problem arise. Fuse or rectifier replacement in the field takes only
minutes, thanks to the unique modular design of the SE6000B-3P.
The SE6000B-3P features loss of sensing protection and will shut down if sensing voltage is lost. This
feature prevents a runaway condition prevalent in many separate-sensing designs and will result in a
fail-safe shutdown!
Due to its extreme simplicity, the SE6000B-3P 3-Phase Static Exciter is uncommonly reliable and
offers features and regulation accuracy usually only offered by much more complicated and often
much more expensive static exciters.

© 2014 Power-Tronics, Inc.
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Determining Correct Application Sizing
The SE6000B-3P 3-Phase Static Exciter is designed for use with 208-240VAC 3ø input. It
contains internal suppression for use with brush-type generator sets. Before installation, it is
necessary to verify that the SE6000B-3P is the correct product for your application.
To determine if the SE6000B-3P is the correct product for your generator you need to know any
two of the following 3 specifications from the rating plate of your generator:
1: Exciter Field Voltage (in DC Volts) [Generally given in full load Voltage on nameplates]
2: Exciter Field Resistance (in Ohms) [See Note Below]
3: Exciter Field Amperage (in DC Amps) [Generally given in full load Amps on nameplates]
Using the specifications obtained from your generator exciter,
verify that your generator fits the specifications from the chart or
graph below:
• Exciter full load voltage is 200VDC or less, and your exciter field resistance is
.42Ω or greater.

© 2014 Power-Tronics, Inc.
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Note about Field Resistance:
• When measuring field resistance on a brushless generator, simply measure the resistance of the
exciter field through your field leads with a multimeter.
• When measuring field resistance on a brush-type generator, measure the resistance through both
the field leads as well as directly on the slip rings themselves. The readings you obtain should
ideally be the same, but no more than 1% difference. If you show more than 1% difference in
reading your generator has brush and ring contact problems and will need cleaning or
maintenance before installing the SE6000B-3P. Failure to correct brush and ring contact
problems will result in severe damage to the voltage regulator as well as possible
PERMANENT damage to the slip rings themselves! NEVER use emery cloth, carborundum
stones, “comm sticks”, or Tuner cleaner to dress or clean slip rings. They will make a bad
problem much, much worse! Only use Garnet or Flint sandpaper and clean with a clean rag
soaked with Acetone for best results!
If you do not have any of the specifications of your generator’s exciter, or if you
don’t know where to start when trying to determine your exciter specs, please see
the section below for instructions on measuring and calculating your exciter
specifications.
• Measure your exciter field resistance using a multimeter on your field leads.
Record this value. If you have a brush-type generator, also take a resistance
reading on your slip rings: the value you obtain on the slip rings should be no
more than 1% difference from the value you obtained through the field leads.
• Next, start and run the generator and apply 12V from a battery through your
field leads and record the AC voltage produced by the generator. To
determine your full load exciter field voltage, use the following formula:
EExc. =
Where EGen.Conf. is your Generator’s configured voltage (e.g.: 120, 208, 240,
480V, etc.), EGen.Output is your recorded output voltage, and EBattery is your battery
voltage (12V usually).
• Next, calculate your maximum exciter field amperage using your measured
field resistance and your calculated exciter voltage using the following formula:
Where I is your maximum exciter field current, E is your calculated field
voltage from the above formula, and R is your measured field resistance.
Using the values you just measured and calculated, see the chart on
the previous page to determine whether the SE6000B-3P is the correct
product for your application.
€
EGen.Conf .
EGen.Output
EBattery
"
#
$
$
%
&
'
'
* 2
I=E
R

© 2014 Power-Tronics, Inc.
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Connection Diagram
(See page 7 if your unit is equipped with the optional internal UIC200 Interface Module)
The SE6000B-3P is a half-controlled 3-phase Full-Wave rectified static exciter, which
allows a maximum of 250VDC at 600 ADC continuous with an input voltage of 240VAC
3ø.
This product is typically used on slip-ring generators with full load field voltages of
200VDC or less and full load exciter field amperages between 300 and 590ADC.
Note that the maximum input voltage to the SE6000B-3P 3-Phase Static Exciter is
240VAC 3ø! DO NOT input 277VAC into the SE6000B-3P! Severe damage to the
unit will result! For use on 480V systems, either connect the SE6000B-3P to the
winding center taps T7, T8, and T9 or use a 480-240V step-down transformer.
SE6000B-3P
Static Exciter
Main power
transformer
should be sized
at a minimum
of 225KVA,
240vac, 3ø.
Paralleling CT should have 5A
secondary with a 25VA burden
capacity!
NOTE:
It is not necessary to
jumper terminals F and G if
not using the Remote
Voltage Adjustment!

© 2014 Power-Tronics, Inc.
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Connection Diagram for Units Equipped With Optional
Internal UIC200 Optical Interface Module
The SE6000B-3P is a half-controlled 3-phase Full-Wave rectified static exciter, which
allows a maximum of 250VDC at 600 ADC continuous with an input voltage of 240VAC
3ø.
This product is typically used on slip-ring generators with full load field voltages of
200VDC or less and full load exciter field amperages between 300 and 590ADC.
Note that the maximum input voltage to the SE6000B-3P 3-Phase Static Exciter is
240VAC 3ø! DO NOT input 277VAC into the SE6000B-3P! Severe damage to the
unit will result! For use on higher voltage systems connect the SE6000B-3P to an
appropriately sized step-down transformer.
SE6000B-3P
Static Exciter
Main power
transformer
should be sized
at a minimum
of 225KVA,
240vac, 3ø.
Paralleling CT should have 5A
secondary with a 25VA burden
capacity!

© 2014 Power-Tronics, Inc.
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Creating an External Flashing Circuit
The SE6000B-3P 3-Phase Static Exciter is designed primarily for industrial or
commercial installations, such as hydroelectric dams or power stations where a station
battery or existing power source is normally present. The SE6000B-3P can be ordered
with an internal flashing circuit, or use an external flashing source to bring the generator
up to voltage during startup.
The diagram below shows how to create a safe flashing circuit to prevent damage to the
SE6000B-3P or the power source during the flashing procedure.
A typical flashing power-source is a 125vdc station battery. Contactor, diode, and
resistor should be sized to fit the power source being used. Please contact Power-
Tronics for sizing assistance.
To avoid damage to the SE6000B-3P Static Exciter or possible
damage to the flashing power source, the flashing source should be
completely disconnected from the SE6000B-3P and the generator field
once the flashing sequence is complete!
AC1
AC2
AC3
F+
F-
TB1
TB2
SERCP-3P
Removable
Control Panel
TB3
Customer-Supplied
Flashing Power
Source
+
-
Resistor, Diode,
and Contactor are
Customer-Supplied

© 2014 Power-Tronics, Inc.
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SERCP-3P Removable Control Panel
The SE6000B-3P 3-Phase Static Exciter features a removable control panel for
convenient relocation of the control module and firing module to a location closer to the
main switchboard and can be configured to meet the needs of your application. The
various forms of the SERCP-3P are shown below:
SERCP-3P Removable
Control Plate
Default configuration of the
removable control plate contains no
internal UIC200 Optical Interface
Module and no internal flashing
circuit. Requires external flashing
source for buildup.
SERCP-3P-BU Removable
Control Plate
Optional configuration of the
removable control plate, which adds
an internal flashing circuit that allows
automatic buildup at voltages as low
as 3.5VAC.
SERCP-3P-UIC Removable
Control Plate
Optional configuration of the
removable control plate with internal
UIC200 Optical Interface Module and
no internal flashing circuit. Requires
external flashing source for buildup.
SERCP-3P-BU-UIC
Removable Control Plate
Optional configuration of the
removable control plate, which
contains an internal UIC200 Optical
Interface Module and an internal
flashing circuit for buildup voltages as
low as 3.5VAC.

© 2014 Power-Tronics, Inc.
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To detach the removable control panel from the SE6000B-3P, simply remove the 4 1/4-
20 nuts that hold it to the main chassis and remove the wires from TB1 and TB2.
Install the control panel in the desired location, and then reconnect the wiring as
originally shown. The original wires are color coded for quick and easy hookup. See
the diagram below for further details.
FM4 Firing
Module
VM120-3C
3-Phase
Voltage
Regulator
TB1
TB2
SE6000B-3P Main Chassis
SERCP-3P Removable
Control Panel
Stability
Adjustment
Internal
Voltage
Adjustment
DO NOT ADJUST
THESE SCREWS
Without First
Contacting
Power-Tronics!!!
UIC200
Range
Adjustment
Optional
Internal UIC200
Optical Interface
Module
Optional
Internal flashing
circuit
Shown Configured as SERCP-3P-BU-UIC
Fine Stability
Adjustment

© 2014 Power-Tronics, Inc.
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Initial Setup and Commissioning
1. Install the SE6000B-3P and wire up to the correct wiring diagram (Standard hookup, or
optional internal UIC200).
2. If installing the SE6000B-3P on a brush-type generator, verify that the brushes and
brush riggings are isolated, ungrounded, and connected ONLY to the SE6000B-3P.
3. Turn the internal voltage control on the VM120-3C voltage regulator 15 or more turns
counter clockwise (left) or until you hear the screw click. This procedure is necessary in
case the original factory settings have been altered.
4. If you are using a remote voltage adjustment, set it at 50% of adjustment. If your model
is equipped with the optional internal UIC200, set your external controller to
approximately 50% of its output range.
5. If the generator is to be paralleled, set the droop resistor between 2Ω and 4Ω.
6. Start up the prime mover and bring up to operating speed, then apply 24vdc to terminals
D and E on TB3 using the Start/Stop switch.
7. If your model requires an external flashing source, apply the external flashing source to
the exciter field to build the generator up. As soon as the generator begins to build
voltage, remove the flashing source and the SE6000B-3P will take over.
8. Set the internal voltage adjustment on the voltage regulator to the desired voltage setting
for the generator output by turning the adjustment screw clockwise (right).
Note that the voltage adjustment is a 25-turn pot! If using the optional internal
UIC200 Optical Interface Module, verify that your external control can adjust the
generator voltage by varying the controller output signal.
9. If required, adjust the stability using the fine and coarse adjustments provided on the
FM4 Firing Module and the VM120-3C Voltage Regulator. Attempt to adjust stability
with the Fine adjustment first, turning the potentiometer COUNTERCLOCKWISE to
increase stability. Note that voltage will change with stability adjustment, keep the
terminal voltage in range with the internal voltage adjustment.
10. Place the generator on line and observe the frequency and voltage.
11. If the generator is being paralleled, measure the droop during loading and adjust the
droop resistor as necessary. Reducing droop resistor resistance will reduce droop.
NOTE: Loading the generator with a purely resistive load-bank may cause
undesirable droop characteristics such as no droop, very slight droop, or even
rising terminal voltage. Measure droop with a mixed load for best results.
12. If paralleling and the terminal voltage rises or excessive amperage exportation occurs
during loading with a mixed load connected, reverse the CT leads and try again.
13. Observe voltage regulation during no-load and full-load conditions. Once the voltage is
set, proper control is observed, and regulating characteristics are satisfactory the
installation procedure is complete.

© 2014 Power-Tronics, Inc.
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Application Troubleshooting
Problem: Possible Cause
No Voltage 1 3 5 7 9 11 13 15 20 21
Pulsating Voltage 4 5 6 12 16
Flickering Voltage 4 6 7 14 21 22
High Voltage 6 7 8 9 12 13 17 18 20 21 22
Voltage Drop on Load 5 8 10 12 16 23 24
Low Voltage 5 8 12 13
Poor Voltage Regulation 2 4 10 12 13 16 23 24
No Voltage Control 13 19 20 21 22 23 24
Possible Causes:
1. External Flashing procedure failed, external sensing disconnected, blown internal or external fuses.
2. Unbalanced generator load.
3. Open exciter field or defective generator.
4. Non linear load or defective connection in exciter field.
5. Open diode in exciter or shorted rotor in generator.
6. Loose component in voltage regulator.
7. Loose wiring connections.
8. Input voltage to regulator is too low.
9. Exciter field is grounded.
10. Non linear load or wrong selection for regulator hookup.
11. Exciter fields are reversed.
12. Wrong selection of regulator wiring configuration.
13. Defective voltage regulator.
14. SCR or Inverter drive effecting generator waveform.
15. 24vdc not applied to terminals D and E on TB3.
16. Isolation transformer is too small.
17. Isolation transformer is needed.
18. Exciter fields are not isolated from other circuits.
19. Input and field circuit are being fed by a common cable or conduit.
20. Incorrect hookup or wiring.
21. Poor brush contact to commutator or sliprings.
22. Damaged, pitted, or grooved slip ring surface.
23. Current transformer has reversed polarity or is not shorted during non parallel operation.
24. Input to regulator is from an auxiliary winding and not the generator main stator.

© 2014 Power-Tronics, Inc.
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Bench Check Procedures
1. Wire up the SE6000B-3P as shown in the figure below.
2. Connect up two 120 volt 50 to 150 watt light bulbs in series to the F+ and F- Terminals.
3. Install a switched 24vdc power source to terminals D and E on TB3.
4. Turn the internal voltage adjustment on the VM120-3C Voltage Regulator fully Counter-Clockwise (Left)
before beginning the testing procedures below.
5. Input 208-240VAC, 3ø fused at no more than 5A into the SE6000B-3P and input 120VAC 3ø into terminals
A, B, and C on TB3. The test light should be OFF.
6. Turn on the 24vdc power source to terminals D and E on TB3. The test light should be OFF.
7. Slowly turn the internal voltage adjustment on the VM120-3C Voltage Regulator Clockwise (Right) until the
lights glow. The test light should light to FULL Brightness. NOTE: It may take several turns of the
adjustment screw before the lights illuminate!
8. Slowly turn the internal voltage adjustment of the VM120-3C Voltage Regulator Counter-Clockwise (Left)
until the lights go dark. The test light should be OFF. NOTE: It may take several turns of the
adjustment screw before the lights go dark!
9. Turn off power and disconnect the SE6000B-3P from your power sources. Inspect all electronic
components on the SE6000B-3P to ensure they are isolated from touching any part of the SE6000B-3P
housing.
10. If you were able to successfully perform all of these tests, the SE6000B-3P is good.
2x 120V 50-150W
Incandescent
Fuse Replacement Information:
SE6000B-3P:
Rating: 600A @ 250VAC
Qty: 3
PTI Part # 5CF-399
Cooper–Bussman Part # FWX-600A
AC1
AC2
AC3
F+
F-
TB1
TB2
SERCP-3P
Removable
Control Panel
240VAC 3ø
Power Source
TB3
120VAC, 3ø
Power Source

© 2014 Power-Tronics, Inc.
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Installation Warranty Form
It is very important that you fill out this form completely when installing a voltage
regulator. This form serves as a history record on the application. This form also
contains the information needed by Power-Tronics, Inc., for repair and troubleshooting
of any product you may be having problems with.
Failure to fill out this form during installation will result in a cancellation of
your warranty coverage! Filling out this form takes only minutes but will save
hours or days later on if your product should require service!
Product
Other options
Serial Number
Date of Installation
Type of Generator
Model #
Brush type
[ ]
Brushless
[ ]
AC Stator Information
Wired for
Volts
Phase
Hz
Generator Configuration: Lead
Exciter/Rotor Information
Exciter field
resistance
Ω
@
F+ / F-
Ω
Exciter field volts
vdc
@
Slip Rings
Ω
Description of problem with product or generator
Your phone number
Name:
Your fax number
Ship to Address:
Your email address
Ship to City, State, Zip:

© 2014 Power-Tronics, Inc.
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PRODUCT WARRANTY
Power-Tronics, Inc., assumes no liability for damages due to incorrect voltage or other voltage
related damages resulting from either output of the generator or input to the generator exciter
system. These problems should be protected with external devices provided by the customer
such as fuses, surge suppressors, over/under voltage and frequency controls.
Power-Tronics, Inc., warranties only parts and workmanship of this product for a period of 2
years from the original date of purchase from Power-Tronics, Inc. Under warranty, Power-
Tronics, Inc. will replace, exchange or repair the defective product without labor or parts cost
to the customer. Remaining warranty of the original product will be transferred to the replaced
or repaired product. To obtain warranty, a copy of the original Installation Warranty Form must
be sent in with the defective product, which clearly shows the purchase date and serial number
of the defective part. A repair request form must be sent in with the product before repairs will
begin. You can obtain this form by contacting Power-Tronics, Inc.
Send repairs to: Power-Tronics, Inc., 2802 Cobbler Ln., Kerrville Texas USA 78028.
Send in repairs only by UPS or FedEx. USPS will NOT deliver to our facility!
Any one of the following conditions will void the warranty:
v Overheating of the power supply resistor on the printed circuit card.
v Overheating of the SCR or freewheeling diode.
v Physical damage to the printed circuit card, housing or components.
v Unauthorized repair or alteration of printed circuit card.
v Installation by anyone other than a qualified professional generator service technician.
v Conductive or corrosive contamination of the circuit card.
v Removal of our company identification from the product.
v Removal of any conformal coating of the printed circuit card or components.
v Overheating of foil on the printed circuit card.
v Inappropriate or infeasible application.
v Use with any external device other than manufactured by Power-Tronics, Inc.
v Failure to fill out the attached warranty card during installation
No other warranty is expressed or implied.