Requires Programmable AC Power Source with
Square Wave Capability
• Adds DC capability to AC Power Source
DC Output Voltage Derived from Provided AC RMS
Input Voltage
• Program DC Transients Using UPC Controller
Functions
Run Dynamic Voltage Tests on DC Powered
Equipment
• Dual Banana Jacks Provided on Front and Rear Panel
Easy Connection of DMM or Scope to Monitor DC
Output Voltage
• Circuit Breaker on Front Panel
Quick AC Input Power Disconnect Removes DCR Unit
from AC Source Output
• 19” Rack Mount Enclosure with Removable Rack Ears
Fits easily on Lab Bench, on Top of the AC Power
Source Used or in Instrument Cabinet
Available Options:
• UPC Studio Software Suite (available at no cost)
• UPC Test Manager
UPC Manager Software Suite
Master the Power of the Wave!
UPC Manager Software
gives you the tools necessary to quickly and easily
operate your DC output
unit through the AC Power
Source. This Windows software supports controls over
all areas of your Power control all areas of your Power
Source testing with simple
presets, user prompts, test
sequences, test plans and
custom reports
DCR600-20 DC Output Module
The DCR600-20 is a unique approach to generating programmable DC voltages to test
DC powered equipment using a Pacic Power Source AMX Series AC Power Source.
The DCR600-20 connects between the AC Power Source outputs terminals and the
UUT and recties the programmed AC output voltage into a stable DC voltage.
Pacic Power’s AMX and ASX-Series high performance Linear AC Power Sources oer
low output voltage noise and distortion, ease of installation, and high AC waveform
delity that is used to produce the required DC output voltage.
DC Test Capability From an AC Power Source
Leverage your existing investment in your AC Power Source by using it not only
for AC product development and test but for DC power products as well. The
same programmable features and function available on the AC Power Source
can be applied to an AC derived DC output. DC voltage is twice that of the AC
Line to Neutral voltage so scaling from AC to DC is easy.
Simple Connection, Quiet Operation
The DCR unit is placed between the AC Power Source output and the DC load
under test. For best results, a three phase AC Power Source is recommended. No
other equipment is needed to provide DC power. A set of banana jacks is provided on the DCR unit to connect a DMM which can be used to monitor the DC
output voltage. No DC bias supply is needed to operate the DCR unit and only
convection cooling is needed to cool the unit so no fan noise is present.
DC Test Sequence Programming
By programming the required AC voltage output sequence on the AC Power
Source, sophisticated test sequences can easily be applied to a DC unit under
test.
The Leader in AC Power Technology now oers DC
An early pioneer in the development solid-state power conversion equipment,
Pacic Power Source continues to develop, manufacture, and market both linear
and high-performance PWM AC Power Sources. Pacic’s reputation as a market and
technology leader is best demonstrated by its continuing investments in both research and development and world-wide customer support. With corporate owned
oces in the United States, Germany, the United Kingdom, and China, local personalized support is always available.
THE POWER OF EXPERTISE
FREQUENCY CONVERSIONR & DMANUFACTURINGAEROSPACEMILITARYCUSTOM
Specications: DC Output
DC Output
ParameterSpecicationUnitConditions
VoltageDC600VdcMaximum allowable DC Output Voltage
Accuracy±0.5% RangeSee Note 1
Rise Time< 2.0msec0-100% voltage change @ 10-90% amplitude at 300V/20A load
Fall Time< 15.0msec100-0% voltage change @ 90-10% amplitude at 300V/20A load
DC Ripple RMS< 750mV RMSSee Note 2
DC Ripple pk-pk< 4.0V peak-peakSee Note 2
Load Regulation< 0.5% of full rangeWith CSC on and UPC32 and external sense at DCR input. AMX in
CurrentMax.20AdcMaximum supported DC Output Current
Current Limit-Determined by AC Power Source Programmable Current limit setting.
PowerMax.6000WattsSee voltage and current rating chart below
OtherOutput
Capacitance
ControlsDC OutputNoneNOTE: No DC Output disconnect is provided. A contactor or discon-
DCR600-20
< 4.0msec0-100% voltage change @ 10-90% amplitude at 600V/ 10A load
< 40.0msec100-0% voltage change @ 90-10% amplitude at 600/10A load
Direct coupled mode on 135Vac range
< 1.0% of full range With CSC on and UPC32 and external sense at DCR input. AMX in
Transformer coupled mode on 270Vac range
470μF
nect switch may be added between DC terminal block and UUT if
desired
NOTES:
1. Applies under nominal load with transfer function Vac = (Vdc + 1.4) / 2.02 where Vdc is the desired DC output voltage and Vac is the programmed
AC voltage.
2. Specications shown apply when using AMX AC Power Source model in three phase output mode (FORM3) and standard square wave output
waveform at 400Hz fundamental.
Input Power Requirements
AC Input
ParameterSpecicationUnitConditions
VoltageVAC RMS (L-N)0-300Vac RMSMaximum allowable AC RMS Input Voltage.
VAC Peak (L-N)300VpeakMaximum allowable AC Peak Input Voltage
FORM33 Phase + Neutral See Note 3
WaveformSquare WaveRecommended AC Source Output Setting
Frequency400HzRecommended AC Source Output Setting
Input Safety CoverIncludedProtects against accidental touching of AC input
NOTES:
3. DCR600 Unit is operable with single phase AC input but AC to DC Scaling will be lower and Ripple higher. For best performance, three phase AC input is recommended. All data shown is for three phase AC input.
DCR600-20
DC Output Power Rating Curve
Rated Continuous Load Current as a Function of Output Voltage
Chart shown assumes AC Power Source model used is capable of supplying the required AC current as demanded by the DC
load on DCR output at the programmed voltage. Check relevant Pacic Power Source AC Model data sheet for AC voltage
and current rating charts.
MODELVAVrange
305AMXT500
308AMXT750
320AMXT2000
345AMXT4500
360AMXT6000
All Data shown for 3 Phase Mode (FORM3)
Coupling
Direct1351251.502502.2551
1.5:12021871.003751.5550
2.0:12702500.755021.1551
2.5:13382990.606000.9527
Direct1351252.002502.9735
1.5:12021871.303751.9715
2.0:12702501.005021.5735
2.5:13382990.806001.2703
Direct1351256.002508.82205
1.5:12021874.003755.92200
2.0:12702503.005024.42205
2.5:13382992.406003.52110
Direct13512512.0025017.64410
1.5:12021878.0037511.74399
2.0:12702506.005028.84410
2.5:13382994.86007.04219
Direct13512513.625020.04998
1.5:120218710.7037515.75884
2.0:12702508.0050211.75880
2.5:13382996.406009.45626
Vmax LNVset
(AC)
Available
Arms
/Phs @ Vset
VdcDC Curr.
(Adc)
Power
Avionics DC Test Sotware Options
Owners of the DCR option may use the growing library of Avionics Compliance Test Sequence Software to perform DC
Power Group testing at either 28Vdc, 135Vdc or 270Vdc. The DC Test Sequence are included in the Avionics Test Options
available from Pacic Power Source for use with its UPC Studio Test Manager Windows Software. The table below shows
currently supported test standards. Contact Pacic Power Source to check on availability of DC test sequences.
Manufacturer / OrganizationTest StandardAirframe RevisionPPS Part Number
Airbus Industries, EuropeABD0100.1.8A380E149102
Airbus Industries, EuropeABD0100.1.8.1A350C149125
Boeing, USA787B3787 DreamlinerC149126
Radio Technical Commission for Aeronautics
(RTCA)
US Department of Defense (DoD)MIL-STD-704Military AviationF149101
DO160, Section 16 Commercial AviationG149124
DCR600-20
Principle of Operation
The DCR600-20 uses a three phase diode bridge to rectify the AC input voltage to a single DC rail. By using the square wave
capability of the AMX Series AC Power Sources, low voltage ripple can be accomplished with only minimal bulk DC storage
capacitance at the output. This results in faster DC slew rates compared to a typical 6KW DC Power Supply. No modications
are needed to the AC Power Source to use the DCR unit as it is fully self-contained. If the DCR unit is placed away from the
AC Power Source used to drive its input, it is recommended to use the external voltage sense capability of the AC Power
Source to minimize line losses1.
A block diagram of the DCR unit is shown in the gure below for reference.
Applications
The DCR is most practical for higher Voltage DC applications (100Vdc to 600Vdc) as these ranges are a better t for the 135V
or 270VAC voltage ranges of the AC power source. Lower voltage settings will generally provide only little DC output power
as the AC Power Source does not deliver higher current at lower voltages. Check the Voltage and Current rating chart of the
AC Power Source model you plan to use to drive the AC input side of the DCR unit.
Applications for DC testing are numerous and only a handful of typical examples are listed here.
• LED Lighting
• Power Conversion, Power Factor Correction
• DC Motors and Actuators
• DC Power Distribution in Avionics
DC Output Samples
The waveform capture screens shown below represent typical DC output voltages resulting from using the
DCR600-20 with a 345AMX AC Power Source. All data is taken using the recommended AC output parameters
of 400Hz, Square wave and FORM3 AC output mode.
AC Input and DC Output Waveforms
This scope screen image shows three phase square
wave from and the resulting DC Voltage and Current
waveforms into the load.
1
Note: No External DC Voltage Sense capability is provided so the distance between the DC load and the DCR unit should be kept to a minimum with suciently sized load wire gauge.
Programmed DC Voltage Ramp
This scope screen image shows the DV voltage ramping from
0Vdc to 270Vdc using a slew rate of 54Vdc/sec over a 5 second
period.
Programmed DC Voltage Dip
This scope screen image shows the result of a programmed
DC voltage drop to 0Vdc for 100 msec under light load conditions. The downward slope is caused by the RC constant of the
DCR600 output capacitance.
DCR600-20
Typical Peak to Peak Voltage Ripple
This scope screen image shows a magnied vertical view of the
DC output voltage which illustrates the relatively low Vdc peak
to peak ripple present on the output.
Indirect Control of DC Power- Simple, Intuitive Operation
The UPC Controller part of the AMX Series of Program-
mable AC Power Sources. When used with the DCR unit, AC
voltage amplitudes are scaled to a DC voltage output. The
scaling factor depends on the number of AC output phases
(1 or 3) and the shape of the AC waveform selected.
For best results, a three phase output and Square waveform is
recommended.
Using the front panel keyboard and display, all controller
models provide for selection of power source output mode,
coupling, voltage, and frequency.
4 x 16 Character LCD
Display
Parameter Control
Both the UPC-1 and UPC-32Controllers are available with
either RS-232 or GPIB remote interface. Commands are
structured in accordance with SCPI (Standard Commands for
Programmable Instruments).
Program Edit and Function Key
Output Control, Slew, and enable Keys
DCR600-20
DCR600-20 DC Output Module
General/Environmental
Ambient Temperature
On / O Circuit Breaker
Isolation
Output Bleeder
Safety
EMC
Marking
Software
19" (483mm)
Operating: 0° - 50° C
Storage: -20 ° - 80° C
Protection and Safety
Use AC Breaker to Disconnect DC Rectier from AC Source
Output.
Output to chassis
Input to chassis
Bleed Resistor
1200 Vdc / 1600 Vac
1350 Vac
Internal, 50KOhm Across DC Output, Heat Sink Mounted.
Regulatory Compliance
IEC61010
IEC61326
CE Approval Pending
Options
RMSHardware
UPC
Manager
UPC Test
Manager
DC Test
Options
Rack Mount Slide Kit.
Windows Control Software. Controls Steady
State Settings, Measurements and Output
Sequence Programming
Comprehensive Test Planner and Test
Sequence Management Software. Requires
UPC Manager program.
Mil-Std704, RTCA/DO160 ,Airbus, Boeing
2U
3.5”,
89mm)
Chassis
Dimension
( W x H x D)
Cabinet Mount
Terminals
Cooling
Front Panel Controls
/ Indicators
Rear Panel
Connections /
Indicators
16.75" (425mm)
Mechanical Specications
Type
16.75” x 3.5” x 9.6”
425 x 89 x 245 mm
Width includes Rack Ears: 19” / 483 mm
Depth includes Safety Covers: 11.5” / 292 mm
Removable Rack Ears. Requires L Brackets or Slides.
Rack Slide Mounting Holes on Side of Chassis. Con-
tact Customer Service for Rack Slide option.
Input
Output
Ground
Connection
Convection
On/O
switch
Banana
Jacks
Terminal
Blocks
Safety
Covers
Provided
Banana
Jacks
19” Rack Width
5 Pole Terminal
Compression Block
3 Pole Terminal
Block
AC Input Terminal
Block &
Ground stud on
Rear Panel
Circuit BreakerUse AC breaker
Dual Safety type, 4mm, Sheathed
Female 19 mm Spacing
Red for +DC
Black for -DC
AC Input Connections, 4 Wire + Ground
DC Output Connections
AC Input Terminal Block
DC Output Terminal Block
Dual Safety type, 4mm, Sheathed Female. 19 mm Spacing.
Red for +DC
Black for -DC
2U Rack Mount
Phase A, B, C,
Neutral
Chassis Ground
Rated to 600Vdc,
85Adc.
DC Pos, DC Neg.
Ground Stud near
DC output terminal
to allow ground
EUT as needed
to disconnect DC
Rectier output
from AC Source
Output.