G Series
AC Power Systems
6 to 90 kVA
45 to 5,000 Hz
Solid State AC Power Conversion
• Programmable AC test power, 45 to 5,000 Hz.
• Power line susceptibility tests: spike, sag, surge.
• Flexible, expandable lab power.
• Precision frequency conversion.
• High reliability UPS.
T h e P o w e r o f E x p e r t i s e
www.pacificpower.com
Precision Performance
Design Excellence
Unmatched Flexibility
The simple basic design concepts used in Pacific Power G Series equipment have resulted in continuous application expansion
since product inception. Exceptional reliability and serviceability are a hallmark of G Series equipment and have placed G Series
in the most demanding applications for AC Power in the world.
Controller Options provide for applications ranging from
simple manually controlled frequency conversion to very
sophisticated BUS programmable transient simulations.
Power modules provide output frequencies up to 5,000 Hz.
Modules have Excellent Peak Current capability and are
short circuit protected with auto recovery.
Power modules utilize linear power amplifier technology to
provide High Quality Power and Microsecond Response
to controller stimulus and load power demand.
Output Autotransformers provide a broad range of output
power forms with exceptionally high performance for
faithful transient simulation.
Power modules operate in Single or Three Phase Mode as
driven by the controller.
Power modules contain Redundant Output Devices which
are electronically disconnected from system output if failed.
Identification of suspect module is made through service
lamps and diagnostic meter on each power module. Power
modules themselves are redundant and can be replaced
“on-line” without shutting down output power.
G Series Systems are Easily Paralleled in the field.
Systems may vary in power from 6 to 90 kVA.
Universal, Wide Range Input magnetics include tap
options for common power forms found throughout
the world.
If you are unwilling to compromise your
power quality and reliability, consider the
power source that has proven itself in
thousands of demanding applications –
Pacific Power G Series.
2
System Configuration
G Series Systems are readily configurable as frequency converters, line conditioners, programmable test systems
and uninterruptible power systems.
301-F Universal
The basic building block of a G Series AC Power System is the
mainframe. The mainframe consists of the cabinet and AC-to-DC
power supply. Up to five mainframes may be paralleled to
increase system output power up to 90 kVA.
Each Pacific power source is burned in and meticulously tested
before it can leave the Pacific factory. With close attention to
detail, handcrafted workmanship comes through with every
system delivered.
Due to its modular design, failed device disconnect circuitry,
and on-line module replacement, Pacific G Series Systems
are unmatched in reliability and ease of service.
Control Module
SCU/UPC-32
Programmable
Controller
3,6, or 9 120-GR
Power Modules
390-GRC, 18 kVA Mainframe
with 301-C Manual Controller
Shown is a simple block diagram that illustrates input power isolation,
control module options, single phase/three phase select mechanisms,
as well as optional output magnetics.
G Series Output Transformers are designed for operation as an autoformer with windings in series or parallel. Carefully interleaved, these
transformers provide excellent regulation from 45 to 500 Hz (2,000 Hz
with SCU and 5,000 Hz option installed).
Some useful secondary output configurations include:
0–120 V L-L 3Ø DELTA 0–277/480 V L-L 3Ø WYE
0–240/416 V L-L 3Ø WYE 0–240 V L-L DELTA
0–220/380 V L-L 3Ø WYE 0–120/240 V Split 1Ø
When output voltages other than the “direct coupled” 0–125/216 VAC
are required, add the suffix “T” to the model number. This option adds
three high performance autotransformers within the mainframe. As the
diagram shows, the transformer primaries are activated with the direct
coupled output by the main output contactor. Output magnetics may be
connected to the single phase output contactor when specified at the
time of order. Transformers are carefully balanced to ensure load
sharing when multiple cabinets are in parallel.
Mainframe
Power Supply
390-GRS, 18 kVA Mainframe
with SCU/UPC-32 Programmable Controller
3
Model Number Information
Standard Models are complete systems ready for use, including cabinets, oscillators, input circuit breakers and output
contactors. Use model designations below to design the system that is right for your application.
390-GR
390-GR
390-GR
3120-GR
3150-GR
3180-GR
3210-GR
3240-GR
3270-GR
3360-GR
3450-GR
MODEL
OUTPUT
POWER
(kVA)
- 6 6 120 48 144 120/208 WYE or 208 DELTA 16 48 1 ea. 390-G
-12 12 120 96 288 120/208 WYE or 208 DELTA 32 96 1 ea. 390-G
-18 18 120 144 432 120/208 WYE or 208 DELTA 48 144 1 ea. 390-G
24 120 192 576 120/208 WYE or 208 DELTA 64 192 2 ea. 390-G
30 120 240 720 120/208 WYE or 208 DELTA 80 240 2 ea. 390-G
36 120 288 864 120/208 WYE or 208 DELTA 96 288 2 ea. 390-G
42 120 336 1008 120/208 WYE or 208 DELTA 112 336 3 ea. 390-G
48 120 384 1152 120/208 WYE or 208 DELTA 128 384 3 ea. 390-G
54 120 432 1296 120/208 WYE or 208 DELTA 144 432 3 ea. 390-G
72 ---120/208 WYE or 208 DELTA 192 576 4 ea. 390-G
90 ---120/208 WYE or 208 DELTA 240 720 5 ea. 390-G
1 PHASE OUTPUT
VOLTS
(RMS)
AMPS
(RMS)
AMPS
(PEAK)
3 PHASE OUTPUT
VOLTS (RMS)
A Power System is assembled using the options defined by the following model designations:
MPS/LEGS
A
(RMS)
MPS/LEGS
A
(PEAK)
CABINETS
Fixed
and/or
ariable
V
Frequency
1 phase or
3 phase
User Switch
electable
S
odels
M
Control and Power Options
301-C Variable Control Module (Manual)
• Provides for selection of three different control options:
1. Internal fixed frequencies of 50, 60 and 400 Hz.
2. Continuously variable oscillator from 47 to 500 Hz.
3. External signal generator inputs.
• Provides for selection of the output power form:
1. Single phase operation.
2. Three phase operation.
• Provides control of the mainframe output contactor to turn power
on and off.
301-F Universal Control Module (Manual)
• Provides for selection of three different control options:
1. Internal fixed frequencies of 50, 60 and 400 Hz.
2. External signal generator inputs.
3. Input from the SCU/UPC-32 Programmable Controller from
45 to 5,000 Hz.
• Provides for selection of the output power form:
1. Single phase operation.
2. Three phase operation.
• Provides control of the mainframe output contactor to turn power
on and off.
4
SCU/UPC-32 Programmable Controller
• Provides total control of the output signal from either the front
panel keypad or from a remote computer via the IEEE or RS-232
(optional) BUS.
Programmable parameters include:
1. Frequency.
2. Frequency transients.
3. Phase angle separation.
4. Voltage amplitude.
5. Voltage amplitude transients.
6. Transient phase (any combination of phases).
7. Transient starting phase angle.
8. Waveform generation.
• Requires 301-F universal control module.
Power Modules (Standard)
120-GR Enhanced power modules for applications requiring motor
starting, high short circuit current, frequencies from 45 to 5,000 Hz
and fast transient and harmonic reproduction.
Output Magnetics
• Standard internally mounted output autoformers provide many
popular output voltage options. See partial listing under System
Block Diagram on page 3.
• Other special magnetics options are available.
Special Features Available with the
SCU/UPC-32 Programmable Controller
Continuous Self Calibration
Provides for exceptional accuracy of the AC Output Voltage. When enabled,
accuracy improves to ±0.03% referenced to the power source internal voltmeter.
Programmable Dynamic Output Impedance (Optional)
Provides positive or negative output impedance. The output voltage waveform at
the right is flattened as a result of a high peak load current drawn by an
electronic load at the peak of the sinewave.
Engaging the dynamic output impedance (ZO) feature dynamically compensates,
as shown at the right, for the distribution or transformer losses up to ±10% of
the output voltage.
Waveform Edit
Provides the ability to modify a stored waveform by specifying the waveform
amplitude desired at each specific phase angle. This method can be used to
quickly create spikes, dropouts, notches and other sub-cycle wave conditions.
The resulting modified waveform can be stored for execution.
Waveform Library
Up to 99 different waveforms may be stored in the waveform library for
execution as part of a steady state test program or for substitution in any output
phase as part of a transient test program. Memory location #1 is a non-editable
high resolution sine wave. Locations 2–16 are editable and may be substituted in
any output phase.
Waveform Analysis (Optional)
Provides numeric display of the harmonic structure of a voltage or current
waveform. The waveform is sampled at 512 samples per cycle using a 12-bit
A/D converter. The resulting high fidelity waveform is analyzed for its harmonic
structure up through the 51STharmonic. Data presented includes the magnitude
of each harmonic in percent, the total harmonic distortion, and the odd and even
harmonic distortion in percent. Displays Vrms, Irms, Ipk, Power, VA and PF.
Waveform Synthesis (Optional)
Provides the ability to quickly create virtually any AC Test Waveform that may be
required by building it out of harmonics. The process is as simple as keying in
the harmonic multiple, the amplitude, and the phase angle for each desired
harmonic up through the 51ST. If desired, waveforms may also be created in the
time domain by making entries from the front panel or by downloading from a
host PC.
Time-Based Transients
Provides the ability to create and execute, on command, transients that occur
linearly over a specified time segment to modify output voltage or frequency.
Cycle-Based Transients
Provides the ability to create and execute, on command, transients that substitute a selected waveform in the output for 1 to 100 cycles. The waveform being
substituted can be selected and/or modified from the waveform library.
Substitution is for an integer number of cycles, regardless of frequency.
scillograph of voltage and current
O
waveform at load due to distribution losses. THD=6.6%
Same conditions as above with
programmable Z
THD=0.25%
THD=8.7% THD=22.2% THD=18.1%
EDIT WAVEFORM: NUMBER=16 RANGE=2-16
STARTING PHASE ANGLE=0 0-359.5°
ENDING PHASE ANGLE=0 0-359.5°
VOLTAGE IN PERCENT=-100 (+/-)0-100%
WAVEFORM EDIT
HARMONIC CONTENT OF METERED WAVEFORM
WAVEFORM SYNTHESIS: WAVEFORM #2
HARMONIC: 2nd 3rd 4th 5th 6th
CONTENT: .1% 0% 0% 0% 0%
ØANGLE: 0° 0° 0° 0° 0°
WAVEFORM SYNTHESIS
engaged.
º
TIME-BASED TRANSIENTS
CYCLE-BASED TRANSIENTS
5
SCU/UPC-32 Controller Specifications
The UPC controller is a 3Ø AC arbitrary waveform generator and precision AC metering system. Each waveform stored
in the UPC is encoded with 12-bit amplitude and 10-bit time resolution for each cycle. The waveform for each phase
may be independently selected and varied in amplitude and phase angle with respect to phase A.
The UPC output metering samples the output volts and amps at 512 samples per measurement using a 12-bit A/D
converter. This technique provides exceptional metering accuracy and resolution (20 bits), and delivers a high-fidelity
waveform back to a host computer for analysis.
The UPC includes a remote GPIB interface compatible with IEEE-488.2 and SCPI. An available option is an RS-232
serial port that operates up to 38.4 kBaud.
Frequency 45.00 to 5,000 Hz ±0.01%.
Voltage Direct Programmable, 0–V
(see table on page 4).
, in 0.1 V steps
MAX
Voltage Multi-range units are equipped with output
Transformer transformers. When alternate range is
selected, voltage at transformer output is
programmable in steps of 0.5 V.
Accuracy Executive voltage is within ±50 mV
Command (0.03%) of command voltage,
Voltages referenced to the internal voltmeter with
CSC engaged.
Accuracy
Command ± 0.01%, 45–5,000 Hz.
Frequency
Output Z
o
(Optional) programmable, 0 to ± Z
Dynamic output impedance (Zo) is
max. in 0.1%
steps. Z
value in milliohms varies with
o
different models but usually results in a
o
±10% change in output voltage at
maximum load amps.
Phase Angle
Phase Angle (Ø) of Phases B and C
relative to Phase A is programmable from
0°–359° in 1° increments ±0.5°.
Current Limit Current limit is programmable from
0 to I
maximum of the power source.
peak
Accuracy is ±1%, resolution ±0.05%.
Library Steady Stores up to 99 steady state parameter
State Programs sets consisting of waveform, voltage,
frequency, Ø angle and current limit. Can
be executed by program number
from the front panel or the bus.
Library Transient Stores up to 99 transient programs –
Programs one associated with each steady state
program. Allows for changes in volts and
frequency vs. time, or waveform changes
by cycle count.
Library Waveforms Stores up to 99 waveforms that
can be edited and executed in any
manner and in any output phase.
Voltmeter
Range 0–354 V L-N.
0–708 V L-L.
Resolution 0.10V
0.001V
to front panel.
AC
to remote interface.
AC
Accuracy ±0.25% of reading ±0.1%
of range (50–500 Hz).
Ammeter
Range 300% of system current rating.
Resolution 0.01A
0.001A
AC
AC
to front panel.
to remote interface.
Accuracy ±0.25% of reading ±0.1%
of range (50–500 Hz).
Power Range Based on ammeter range.
Meter Resolution 1.0 watts or VA to front panel.
0.001 Watts or VA to remote interface.
Accuracy ±0.30% of reading ±0.14% of range.
Power Calculated and displayed to three significant digits.
Factor/
Crest Factor
Ext. Input Each phase is algebraically summed with UPC wave
form and amplified 25× to the direct output.
Amplitude ±10 V input for each phase modulates the output
Mod. ±100%.
Input
Sync 1) Zero crossing, Phase A.
Outputs 2) Transient start-stop.
3) True when Transient is enabled.
4) Clock – 1024 times the output frequency
Command Average time to start of parameter
Response change from bus command (end of string character)
Time is 50 ms.
Ramp transition time to final value is settable from
200 µs to 300 sec.
Waveform Permits waveform creation by entering %
Synthesis amplitude and phase angle for the 2nd through the
51
ST
harmonics.
Waveform Reports voltage and current waveform
Analysis Analysis harmonic content in % and phase angle for
the 2nd through the 51
ST
harmonics. Displays THD,
OHD, EHD in %.
6
Electrical Specifications
Output Power
ee model listings for appropriate full power ratings.
S
Output Voltage
Nominal system voltage is 125 V L-N three phase or single phase. Output
voltage is fully adjustable from 0–125 V L-N. Three phase forms are configured as
WYE and are capable of being loaded either DELTA or WYE.
Alternate Output Voltage
For output forms other than the nominal 125 V L-N refer to System
Configuration, page 3.
Output Frequency
Determined by control options.
• 47–500 Hz – Standard with 301-C or 301-E Controller.
• 45–2,000 Hz – Standard with SCU/UPC 32 Programmable Controller.
45–5,000 Hz – Optional.
Output Current
See model listings. Peak currents listed are available at the crest of the
voltage sinewave for driving inverter or power supply loads without distortion
or limiting.
Load Power Factor
Output will drive loads of any power factor leading or lagging. (see P.F.
Performance Curve).
Line Regulation
0.1% maximum for ±10% line change.
Load Regulation
±0.1% at the voltage sense point. May vary due to contactor and cabling
losses after the sense point. ±0.25% at system output terminals (3Ø directcoupled outputs).
Load Balance Restriction
None – all performance specifications apply with any amount of load
imbalance.
Load Transient Response
120-GR, 10 microseconds maximum. Applies to a 100% step change in load,
any phase, or any combination of phases.
Output Distortion
0.75% total harmonic distortion maximum (0.50% typical).
Output Protection
Integral electronic current limiting with auto recovery.
Output Isolation
Output is fully isolated from input and frame ground.
Output Storage (Ride-Through)
Output undisturbed by line
interrupts of several millisecondsload dependent.
Output DC Offset
C offset is less than ±10 mV
D
DC.
Phase Separation
“C” Type Systems –3Ø WYE 120° ±1.0° regardless of load balance.
3Ø DELTA 60° ±1.0° regardless of load balance.
Control Characteristics
“C” Type Systems variable frequency, 1Ø or 3Ø switch selectable operation.
Output frequency – 1 continuous variable range of 47–500 Hz, dial accuracy
±1%, stability 0.25%, 3 pushbuttons select preset frequencies of 50, 60,
400 Hz. Accuracy ±0.1% ±0.5 Hz. Stability ±0.1%. NOTE: Pushbutton switches
are equipped with a lockout feature to prevent accidental changes. External
Input – one per phase, fully isolated. Allows system to operate as 3
independent amplifiers (3 phase mode).
Amplitude Control – master control varies all phase(s). 0–full scale amplitude.
3 phase systems have ±10% trim adjustments on B & C phases.
Metering – 4½˝ meter movement capable of measuring V L-N and V L-L via a
six-position pushbutton switch (1Ø system V L-N only). “S” Type Systems (see
page 6 for control capabilities).
1 Phase/3 Phase Operation
A manual switch allows conversion from 1 phase power forms to 3 phase
power forms, instantly. 3 phase systems may be loaded either as WYE or DELTA.
Input Power Forms
The G Series power source is capable of operating from any of the listed
input forms:
Form A: 240 VAC, 3Ø DELTA, 47–63 Hz.
Form C: 120/208 VAC, 3Ø WYE, 47–63 Hz.
Form D: 460 VAC, 3Ø DELTA, or 3Ø Ungrounded WYE, 47–63 Hz. Other power forms
are available; consult factory.
Failure Isolation System
Any failed output device, multiple devices or power module is electronically
disconnected from system output. Failure location is identified by service
lamps and diagnostic meter on each power module. Service can be provided
when convenient by replacing power modules. Power modules can be
replaced WITHOUT system shutdown and without disturbances to system operation.
UPS Option
When performance, maintenance
and logistics cannot be
compromised, choose Pacific
Power Source systems.
Pacific Power’s UG Series Uninterruptible Power Source (UPS)
Systems are configured from standard G Series AC Sources and
UG-18 Battery Support Cabinets. The UG-18 Battery Support
Cabinet is a complete battery back-up system that supports any
of the G Series AC Power Source Systems (6,12 or 18 kVA). One
UG-18 cabinet is provided with each G Series mainframe offering
paralleled systems up to 90 kVA.
7
Environmental Characteristics
Efficiency (EFF)
Varies with type of load attached to the power source as follows:
EFF = 70–90% with predominantly power supply type loads.
EFF = 70% at maximum (125 V) output.
EFF = 65% at nominal (120 V) output.
EFF = 60% at low line (105 V) output.
Ambient Temperature
0 to 55°C Operating.
–40° to 85°C Nonoperating.
Humidity
0–95% relative humidity, noncondensating.
Cooling
Self contained fans provide forced air cooling. All air inlets are
filtered. Filters are replaceable and reusable.
Heat Dissipation
If system location is to be air conditioned, allow 800 BTU/hour
per kVA for a typical electronic load (higher for mixed or linear
loads).
NOTE: One ton of cooling = 12,000 BTU/hour.
Ventilation required to maintain less than a 10°C rise in the
ambient temperature for a typical electronic load:
390-G – approximately 600 CFM.
Input/Output Service Connections
Input and output connections are made via a heavy duty
terminal block mounted inside NEMA-approved junction boxes
that are located on the lower rear panel of the mainframe.
Allow an additional 3.25˝ to overall depth for junction box
clearance, or 5.25˝ when “T” output option is specified.
Mechanical Specifications
Dimensions 390-G
A. Height w/caster base 78˝
B. Height w/forklift base 78.5˝
C. Width 23˝
D. Depth 34.5˝
Weight 1,000 Lbs.
Air Flow 2,000 CFM
Each G Series mainframe is provided on a caster base
with leveling feet for ease of installation.
Forklift or shock mount base is optionally available.
Consult the factory for details.
The Leader in Power Technology
As a privately held, leading manufacturer of high-quality AC Power Conversion
Equipment, Pacific Power Source, Inc. offers standard catalog products that
range in power from 500 VA to >625 kVA. Low-power products include line
conditioners, frequency converters and Programmable AC Power Sources.
High-power systems include programmable power test equipment, power line
conditioners, frequency converters and uninterruptible AC Power Sources.
For Application Engineering Assistance
Contact the factory directly
17692 Fitch, Irvine, CA 92614 USA
Call direct: +1 949-251-1800 • Fax: +1 949-756-0756
US: 800-854-2433
E-mail: sales@pacificpower.com • www.pacificpower.com
© 2008 Pacific Power Source, Inc. Subject to change without notice. #8GSCAT0908
Founded in 1971, the Irvine, California, company was an early pioneer
in the development of linear solid-state power conversion for use in
high-reliability applications. The company now manufactures both
advanced linear and broadband switching types of AC Power Sources.
Consult your local PPS Representative
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