146-1968
MORE WATTS PER VERTICAL INCH
Load up on the
NEW
SERIES EL ELECTRONIC LOADS
from Kepco
Model EL 2K-200-200
Single Channel Unit
Model EL 1K-200-100D
CompuMess Elektronik GmbH · Lise-Meitner-Str. 1 · D-85716 Unterschleißheim
Dual Channel Unit
Telefon (089) 32 15 01 - 0 · Telefax (089) 32 15 01 - 11
info@compumess.de · www.compumess.de · www.netzteile.de
· 1KW - 5KW Modules · 4U Height · Parallel Operation
· Up to 600 Volts DC · Up to 600 Amperes/Module · Constant E, I, P, I/E, E/I · Air Cooled
· Local, Remote Analog Control and USB Standard · GPIB and Ethernet Optional
AN ISO 9001 COMPANY
THE NEW KEPCO SERIES EL ELECTRONIC LOADS
The EL Series is a line of modular air- INDIVIDUAL LOAD SYSTEM INTEGRATION
cooled, DC electronic loads used to test CHARACTERISTICS IS SIMPLE
power sources such as batteries, power · Base Unit - Includes front panel · Up to 60KW into one 8 ft. rack
supplies, generators, chargers, fuel cells, etc. controls and indicators for Amps, · Control up to 15 slaves with
Power ratings start at 1KW; standard models Volts and KW one master (75KW)
have maximum test capabilities of 50, 200,
· Computer operated LabVIEWTM · Computer controlled and/or front
400 and 600 volts. High current and
capable panel operation with display for
power operation are achieved via parallel
connection in a master/slave configuration. · Constant current, voltage, power, voltage, current, power and status
Individual modules are capable of up to 5KW resistance, conductance and · Simple operation - no deep menus
and 600 amperes (see chart). short circuit modes to contend with
The EL Series offers unique Functional · Readback voltage, current, power
Modularity. Functional Modularity allows and load status RELIABLE AND RUGGED
the load to be retrofitted to increase load · High power semiconductors are
· USB and RS-232 are standard
power/current as required for undefined heat sinked for cool operation
future applications. Purchase the capability · GPIB and Ethernet Control via
· Very low internal resistance
needed today with assurance of future single optional interface card
ensures fast and clean switching
power/current upgrades. The result is an · Comprehensive SCPI command set operation
Electronic Load maximizing the most
· Monitor load current via computer · Power devices individually fused
important specification:
or analog output for complete protection
VALUE = $/Watt
· Use unique test patterns from an · Internal thermal sensors ensure
When the requirements increase, the load Arbitrary Waveform Generator via uniform power distribution for
may be upgraded. the external analog input long reliability
All EL loads operate as master or slave and · Remote voltage sense eliminates · Isolated test bus allows a
come with or without front panel control and error caused by voltage drop in wide range of source (DUT)
readouts. Up to 15 additional loads can be test leads configurations
driven with one acting as a master.
LabVIEW is a trademark of National Instruments Corp.
EXAMPLE OF SAFE OPERATING AREA FOR EL 5K-400-420
12.5 16.6
1,000.00 The load may
be operated at
400.00 As current increases, voltage must be
lower to keep the power dissipation at
any given input
300.00
or below the upper limit of 5000 Watts. condition that
Operation at 400 Volts is within the
100.00 valid until 12.5 Amps, which red line boundary.
is 5000 Watts, the maximum
power dissipation capability.
For example:
If a 300 Volt source
This line represents the maximum current is to be tested, select
VOLTS
10.00 capability (400 Amperes). The line stops at the 300 Volt line (blue)
5.05 Volts because the lowest resistance
capability has been reached. and note the range
of current allowable
along that line.
1.00 This line represents the In this example,
minimum resistance of the load.
the load may be
operated at currents
from near zero to
a maximum of 16.6
0.10 Amperes @300V.
1 10 100 1000
AMPERES
Refer to www.kepcopower.com/el-opcurve.pdf for operating curves of all EL models.
©2010, Kepco, Inc. CompuMess Elektronik GmbH · Lise-Meitner-Str. 1 · D-85716 Unterschleißheim
KEPCO, INC. · 131-38 Sanford Avenue · Flushing, NY 11355 USA · Tel: (718) 461-7000 · Fax: (718) 767-1102
Specifications subject to
change without notice. Email: hq@kepcopower.com ·(089) 32 15 01 - 0 · Telefax (089) 32 15 01 - 11
Telefon www.kepcopower.com
info@compumess.de · www.compumess.de · www.netzteile.de
Model EL 2K-200-200 Model EL 1K-200-100D
SERIES EL MODEL TABLE
MODEL NUMBER (1) OPERATING LIMITS OVERLOAD PROTECTION (2) MINIMUM ON
RESISTANCE
RATED POWER RATED VOLTAGE RATED CURRENT POWER (3) VOLTAGE (4) CURRENT (5) ALL MODES
Watts Volts ALL MODES Watts Volts Amps Ohms
Amps
EL 1K-50-100 1000 50 100 1050 52.5 105 0.008
EL 1K-200-100 1000 200 100 1050 210 105 0.014
EL 1K-400-70 1000 400 70 1050 420 73.5 0.046
EL 1K-600-30 1000 600 30 1050 630 31.5 0.017
EL 1K-50-100D 100 0 (6) 50 (6) 100 (6) 1050 (6) 52.5(6) 105 (6) 0.008 (6)
EL 1K-200-100D 1000 (6) 200 (6) 100 (6) 1050 (6) 210 (6) 105 (6) 0.014 (6)
EL 1K-400-70D 1000 (6) 400 (6) 70 (6) 1050 (6) 420 (6) 73.5 (6) 0.046 (6)
EL 1K-600-30D 1000 (6) 600 (6) 30 (6) 1050 (6) 630 (6) 31.5 (6) 0.017 (6)
EL 2K-50-200 2000 50 200 2100 52.5 210 0.004
EL 2K-200-200 2000 200 200 2100 210 210 0.007
EL 2K-400-140 2000 400 140 2100 420 147 0.023
EL 2K-600-60 2000 600 60 2100 630 63 0.083
EL 3K-50-300 3000 50 300 3150 52.5 315 0.005
EL 3K-200-300 3000 200 300 3150 210 315 0.005
EL 3K-400-210 3000 400 210 3150 420 220.5 0.015
EL 3K-600-90 3000 600 90 3150 630 94.5 0.056
EL 4K-50-500 4000 50 500 525 52.5 525 0.002
EL 4K-200-500 4000 200 500 2100 210 525 0.003
EL 4K-400-350 4000 400 350 4200 420 367.5 0.009
EL 4K-600-150 4000 600 150 4200 630 157.5 0.333
EL 5K-50-600 5000 50 600 5250 52.5 630 0.002
EL 5K-200-600 5000 200 600 5250 210 630 0.002
EL 5K-400-420 5000 400 420 5250 420 441 0.008
EL 5K-600-200 5000 600 200 5250 630 210 0.028
(1) For GPIB and Ethernet Interface, add suffix "G" to the model number.
(2) Temperature protection: Per FET safe junction temperature.
(3) Maximum operating power and/or current may be reduced if operating conditions (ambient temperature, available air flow, etc.) cause internal load temperature to
exceed safe operating conditions for FETs (TEMP FAULT).
(4) Maximum operating power and/or current may be reduced when ambient temperature exceeds 25°C depending on air flow, duty cycle of load operation and
other situational specific conditions.
(5) Individually fused FETs allow continued operation with device failure.
(6) Per channel.
KEPCO, INC. · 131-38 Sanford Avenue · Flushing,Elektronik USA · Tel: Lise-Meitner-Str. Fax: D-85716 Unterschleißheim
CompuMess NY 11355 GmbH · (718) 461-7000 · 1 · (718) 767-1102
Email: hq@kepcopower.com · www.kepcopower.com 01 - 11
Telefon (089) 32 15 01 - 0 · Telefax (089) 32 15
info@compumess.de · www.compumess.de · www.netzteile.de
SERIES EL SPECIFICATIONS
SPECIFICATION RATING/DESCRIPTION (1) CONDITION
MODE CHARACTERISTICS
Linearity vs. Programming Command 5-100% of Full Scale
Constant Current ±0.25%
Constant Power ±2%
Constant Voltage ±0.25%
Constant Resistance ±1%
Constant Conductance ±1%
Regulation
Constant Current ±0.25%
Constant Power ±1%
Constant Voltage ±0.25%
Constant Resistance ±1%
Constant Conductance ±1%
Resolution (Via Computer Control) 14 Bits
Current Readback Computer Accuracy ±0.25%
(Current Mode)
Computer Resolution ±15 Bits
Parameter Readback Accuracy ±0.25%
(Current and Voltage)
Resolution ±15 Bits
CONTROL CHARACTERISTICS
USB Interface Uses IEEE 488.2 and SCPI Requires no cost downloadable driver
commands and queries
RS 232 Interface Uses IEEE 488.2 and SCPI Baud rate: 38400 Parity: None
commands and queries Data Bits: 8 Stop Bits: 1 Echo: OFF
GPIB Interface Uses IEEE 488.2 and SCPI Optional card provides access to both interfaces.
Ethernet Interface commands and queries Add suffix "G" to model number
when ordering.
GENERAL CHARACTERISTICS
a-c Line Power Input 120V a-c ±10%, 50-60 Hz or 120V is factory default,
240V a-c ±10%, 50-60 Hz 240V requires internal configuration
Operating Temperature 0°C to 40°C
Dimensions (Load) 19"W x 7"H x24.5"D
Weight (Load) 88 lbs.
Storage Requirements -20 to +60°C, 15 to 80% RH Relatively dust free environment
(1) Specifications measured @23°C ambient.
NOTES:
1. Regulation specified after 15 minutes of operation at set power level. PENDING
2. Individually fused FETs allow continued operation with device failure.
3. Maximum operating power and current may be reduced if operating conditions (ambient temperature, available air flow, etc.)
cause internal load temperature to exceed safe operating conditions for FETs (TEMP FAULT).
4. Maximum operating power and/or current may be reduced when ambient temperature exceeds 25°C depending on air flow,
duty cycle of load operation and other conditions.
APPLICATIONS
AUTOMOTIVE - LIFE-CYCLE TESTING OF HYBRID CONTROL MODULES · FUEL CELL TEST
WINDMILL CHARACTERIZATION AND PERFORMANCE TESTING · WEAPONS BATTERY TESTS
HELICOPTER POWER GENERATOR FLIGHT LINE TEST
POWER SUPPLY TESTING · HIGH PERFORMANCE BATTERY TEST
KEPCO, INC. · 131-38 Sanford Avenue · Flushing, NY 11355 USA · · Lise-Meitner-Str. · Fax: (718) 767-1102
CompuMess Elektronik GmbH Tel: (718) 461-7000 1 · D-85716 Unterschleißheim
Email: Telefon (089) 32 15 01 - 0 · Telefax (089) 32 15 01 - 11
hq@kepcopower.com · www.kepcopower.com
info@compumess.de · www.compumess.de · www.netzteile.de
CONFIGURING AND OPERATING YOUR EL ELECTRONIC LOAD FRONT PANEL
The front and rear panels below show a typical single channel model CONTROLS AND INDICATORS
1. Power Switch
2. Current Display (Autorange)
3. Voltage Display (Autorange)
7 8 9 1 4. Power Display (Autorange)
5. Multifunction Control Knob
Press to Select Mode
Turn for Set Point
2 6. LOAD - Green for Standby
Amber for Engaged
3 Press to Engage/Disengage
Flashing Red for Fault
4
7. LED Constant Current Mode (CI)
5 8. LED Constant Resistance Mode (CR)
Blinks for Constant Conductance
Mode (CS)
9. LED Constant Voltage Mode (CV)
Front Panel 10. LED Constant Power Mode (CP)
6 12 11 10 11. LED LAN (Lit When LAN Connected)
12. LED Local
All Mode LEDs Blinking ON - Short
All Mode LEDs Blinking OFF - Mode Off
1 2 3 4 5 6 7
REAR PANEL
LAYOUT AND CONNECTIONS
8
1. a-c Input
2. Fuse
9 3. Laminated Copper Buss
10 LOAD Connection
11 4. Remote Sense , Rear Terminal
5. Remote Sense +, Rear Terminal +
12 6. External Analog Control
13 7. Current Monitor Analog Output
8. Ethernet Option (Not Shown)
9. Master (Out to Slave)
10. Slave Input
Rear Panel
11. Slave Output
14
12. RS-232 Interface
13. USB Port
14. GPIB Option (Not Shown)
UPGRADABLE AND DYNAMICALLY CONFIGURABLE
· Expand capability by adding Power FET modules
· Upgradable due to load's modular nature
· Interface enables field retrofits of firmware upgrades
ensuring system is up-to-date
· Ethernet option facilitates remote access
Model EL 2K-200-200/Single Channel Unit
This unit shows two FET modules in place. There is room for three
more modules to be added expanding the capability of the load.
KEPCO, INC. · 131-38 Sanford Avenue ·CompuMess11355 USA · Tel: (718)Lise-Meitner-Str.(718)D-85716 Unterschleißheim
Flushing, NY Elektronik GmbH · 461-7000 · Fax: 1 · 767-1102
Email: hq@kepcopower.com · 15 01 - 0 · Telefax (089)
Telefon (089) 32www.kepcopower.com32 15 01 - 11
info@compumess.de · www.compumess.de · www.netzteile.de
TABLE OF SAMPLE SOFTWARE COMMANDS FROM OVER 1000 IN YOUR SYSTEM
FUNCTION PURPOSE COMMAND EXAMPLE
OPERATION MANAGEMENT
Mode Selection of operating mode MODE CURRent, MODE VOLTage, MODE POWer,
MODE RESistance, MODE CONDuctance,
MODE SHORt, MODE OFF
Load ON/Load OFF Engage/Disengage load with device under test INPut 1=ON, INPut 0=OFF
Set Parameter Value Set current, voltage, power, resistance, conductance values CURRent xxxx, POWer xxxx
Measure Measure Voltage, Current, Power MEASure:CURRent?, MEASure:VOLTage?
Protection Allows setting maximum parameter values to protect the VOLTage:PROTection:UNDer xxxx
device under test as needed as well as minimum voltage VOLTage:PROTection:over xxxx
Damping Selection 12 different damping settings to allow SYSTem:PFModule:DAMPing x,
optimizing the user's test SYSTem:DAMPing x
Where x is a number from 0 to 5 (min - max)
Front Panel Lock Locks or unlocks the front panel controls. LOCK where state is OFF;
Allows three settings for Off, Lock or Emergency EMERgency; or LOCKed
(Emergency allows front panel LOAD button
to disengage the load)
SYSTEM MANAGEMENT
Serial Number Display EL serial number SYSTem:SERN?
Version Display Master control board information SYSTem:VERSion?
Power FET Modules Installed List power FET modules installed in EL SYSTem:PFModule:LIST?
Display Power FET Status Display FET temperatures, currents and fuse status SYSTem:PFModule:STATus?
External Analog Control On/Off Turn external analog input ON/OFF SYSTem:EXTernal
NOTE: System responds to short forms of all commands and queries. See instruction manual for details.
3/4 View A 60KW
Single configuration.
Channel Unit Consists of one
5kW master and
11 5kW slaves.
3/4 View
Dual
Channel Unit
For more information visit
www.kepcopower.com/el.htm
KEPCO, INC. · 131-38 Sanford Avenue · Flushing, NY 11355 USA · Tel: · Lise-Meitner-Str. 1 (718) 767-1102
CompuMess Elektronik GmbH (718) 461-7000 · Fax: · D-85716 Unterschleißheim
Email: hq@kepcopower.com 15www.kepcopower.com15 01 - 11
Telefon (089) 32 · 01 - 0 · Telefax (089) 32
info@compumess.de · www.compumess.de · www.netzteile.de