Xantrex XKW 12-150 User manual

Operating Manual
XKW 3000 Watt Series
Programmable DC
Power Supply
XKW 8-350
XKW 10-300
XKW 12-150
XKW 20-150
XKW 40-75
XKW 55-55
XKW 60-50
XKW 80-37
XKW 150-20
XKW 300-10
TM-25OP-01XN.book Page 1 Monday, April 5, 2004 8:58 AM

TM-25OP-01XN.book Page 2 Monday, April 5, 2004 8:58 AM

Operating Manual for
XKW 3000 Watt Series
Programmable DC
Power Supply
TM-25OP-01XN.book Page i Monday, April 5, 2004 8:58 AM

ii Operating Manual for XKW 3kW Series Power Supply
Limited
Warranty
What does this warranty cover and how long does it last?
This Limited Warranty is provided by Xantrex Technology, Inc. (“Xantrex”) and
covers defects in workmanship and materials in your XKW 2500 Watt Series DC
Power Supply. This warranty lasts for a Warranty Period of 5 years from the date of
purchase at point of sale to you, the original end user customer.
What will Xantrex do?
Xantrex will, at its option, repair or replace the defective product free of charge,
provided that you notify Xantrex of the product defect within the Warranty Period,
and provided that Xantrex through inspection establishes the existence of such a
defect and that it is covered by this Limited Warranty.
Xantrex will, at its option, use new and/or reconditioned parts in performing
warranty repair and building replacement products. Xantrex reserves the right to use
parts or products of original or improved design in the repair or replacement. If
Xantrex repairs or replaces a product, its warranty continues for the remaining
portion of the original Warranty Period or 90 days from the date of the return
shipment to the customer, whichever is greater. All replaced products and all parts
removed from repaired products become the property of Xantrex.
Xantrex covers both parts and labor necessary to repair the product, and return
shipment to the customer via a Xantrex-selected non-expedited surface freight
within the contiguous United States and Canada. Alaska and Hawaii are excluded.
Contact Xantrex Customer Service for details on freight policy for return shipments
outside of the contiguous United States and Canada.
How do you get service?
If your product requires troubleshooting or warranty service, contact your merchant.
If you are unable to contact your merchant, or the merchant is unable to provide
service, contact Xantrex directly at:
Telephone: [phone] (toll free North America)
1 360 925 5097 (direct)
Fax: [phone] (toll free North America)
1 360 925 5143 (direct)
Email: [e-mail]
Web: www.xantrex.com
TM-25OP-01XN.book Page ii Monday, April 5, 2004 8:58 AM

Revision A iii
Direct returns may be performed according to the Xantrex Return Material
Authorization Policy described in your product manual. For some products, Xantrex
maintains a network of regional Authorized Service Centers. Call Xantrex or check
our website to see if your product can be repaired at one of these facilities.
In any warranty claim, dated proof of purchase must accompany the product and the
product must not have been disassembled or modified without prior written
authorization by Xantrex.
Proof of purchase may be in any one of the following forms:
•The dated purchase receipt from the original purchase of the product at point of
sale to the end user, or
•The dated dealer invoice or purchase receipt showing original equipment
manufacturer (OEM) status, or
•The dated invoice or purchase receipt showing the product exchanged under
warranty
What does this warranty not cover?
This Limited Warranty does not cover normal wear and tear of the product or costs
related to the removal, installation, or troubleshooting of the customer’s electrical
systems. This warranty does not apply to and Xantrex will not be responsible for any
defect in or damage to:
a. the product if it has been misused, neglected, improperly installed, physically
damaged or altered, either internally or externally, or damaged from improper
use or use in an unsuitable environment;
b. the product if it has been subjected to fire, water, generalized corrosion,
biological infestations, and high input voltage from lightning strikes;
c. the product if repairs have been done to it other than by Xantrex or its authorized
service centers (hereafter “ASCs”);
d. the product if it is used as a component part of a product expressly warranted by
another manufacturer;
e. the product if its original identification (trade-mark, serial number) markings
have been defaced, altered, or removed.
TM-25OP-01XN.book Page iii Monday, April 5, 2004 8:58 AM

iv Operating Manual for XKW 3kW Series Power Supply
Disclaimer Product
THIS LIMITED WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY PROVIDED
BY XANTREX IN CONNECTION WITH YOUR XANTREX PRODUCT AND IS, WHERE
PERMITTED BY LAW, IN LIEU OF ALL OTHER WARRANTIES, CONDITIONS,
GUARANTEES, REPRESENTATIONS, OBLIGATIONS AND LIABILITIES, EXPRESS
OR IMPLIED, STATUTORY OR OTHERWISE IN CONNECTION WITH THE PRODUCT,
HOWEVER ARISING (WHETHER BY CONTRACT, TORT, NEGLIGENCE, PRINCIPLES
OF MANUFACTURER’S LIABILITY, OPERATION OF LAW, CONDUCT, STATEMENT
OR OTHERWISE), INCLUDING WITHOUT RESTRICTION ANY IMPLIED WARRANTY
OR CONDITION OF QUALITY, MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. ANY IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE TO THE EXTENT REQUIRED UNDER
APPLICABLE LAW TO APPLY TO THE PRODUCT SHALL BE LIMITED IN DURATION
TO THE PERIOD STIPULATED UNDER THIS LIMITED WARRANTY.
IN NO EVENT WILL XANTREX BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSSES, COSTS OR EXPENSES
HOWEVER ARISING WHETHER IN CONTRACT OR TORT INCLUDING WITHOUT
RESTRICTION ANY ECONOMIC LOSSES OF ANY KIND, ANY LOSS OR DAMAGE TO
PROPERTY, ANY PERSONAL INJURY, ANY DAMAGE OR INJURY ARISING FROM OR
AS A RESULT OF MISUSE OR ABUSE, OR THE INCORRECT INSTALLATION,
INTEGRATION OR OPERATION OF THE PRODUCT.
Exclusions If this product is a consumer product, federal law does not allow an exclusion of
implied warranties. To the extent you are entitled to implied warranties under federal
law, to the extent permitted by applicable law they are limited to the duration of this
Limited Warranty. Some states and provinces do not allow limitations or exclusions
on implied warranties or on the duration of an implied warranty or on the limitation
or exclusion of incidental or consequential damages, so the above limitation(s) or
exclusion(s) may not apply to you. This Limited Warranty gives you specific legal
rights. You may have other rights which may vary from state to state or province to
province.
TM-25OP-01XN.book Page iv Monday, April 5, 2004 8:58 AM

Revision A v
Information WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, UNLESS
SPECIFICALLY AGREED TO BY IT IN WRITING, XANTREX
a. MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY
OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN MANUALS OR
OTHER DOCUMENTATION PROVIDED BY IT IN CONNECTION WITH THE
PRODUCT; AND
b. ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES,
COSTS OR EXPENSES, WHETHER SPECIAL, DIRECT, INDIRECT,
CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF
SUCH INFORMATION.
THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK.
WARNING:
Limitations
on Use
Please refer to your product user manual for limitations on uses of the product.
Specifically, please note that this power supply is not intended for use in connection
with life support systems and Xantrex makes no warranty or representation in
connection with any use of the product for such purposes.
Xantrex Technology, Inc.
8999 Nelson Way
Burnaby, British Columbia
Canada V5A 4B5
Information
About Your
Power
Supply
Please record the following information when you first open your Power Supply
package:
Release Revision A (2003-12)
Copyright © 2003 Xantrex Technology Inc. All rights reserved.
Printed in Canada
Model Number ______________________________________________
Serial Number ______________________________________________
Purchased From ______________________________________________
Purchase Date ______________________________________________
TM-25OP-01XN.book Page v Monday, April 5, 2004 8:58 AM

vi Operating Manual for XKW 3kW Series Power Supply
Warnings
and
Cautions
Warnings and cautions are defined and formatted in this manual as shown below.
Power
Supply
Safety
WARNING
Describes a potential hazard which could result in injury or death, or, a procedure
which, if not performed correctly, could result in injury or death.
!
CAUTION
Describes a procedure which, if not performed correctly, could result in damage
to data, equipment, or systems.
WARNING—High Energy and High Voltage
Exercise caution when using and calibrating a power supply. High energy levels
can be stored at the output voltage terminals on a power supply in normal
operation. In addition, potentially lethal voltages exist in the power circuit and on
the output and sense connectors of a power supply with a rated output greater
than 40 V. Filter capacitors store potentially dangerous energy for some time after
power is removed.
!
CAUTION
Operate the power supply in an environment free of flammable gases or fumes. To
ensure that the power supply’s safety features are not compromised, use the
power supply as specified in this manual and do not substitute parts or make any
unauthorized modifications. Contact the service technician for service and repair
help. Repairs must be made by experienced service technicians only.
!
CAUTION
For Use as a Battery Charger
When you are using any of these power supplies for battery charging applications,
it is essential to provide an appropriately sized fuse or circuit breaker in series
between the power supply output and the battery.
Installation of a protector (fuse or DC circuit breaker) rated for about 115% of the
maximum current rating of the power supply and designed specifically to interrupt
the DC voltage of the battery, will provide adequate reverse polarity current
protection. Where several power supplies are in parallel, it is best to fuse each one,
rather than one large fuse for all.
TM-25OP-01XN.book Page vi Monday, April 5, 2004 8:58 AM

Revision A vii
About This Manual
This Operating Manual contains user information for the XKW Series of variable
DC output power supplies, available in several voltage models at 3000 Watts. It
provides information about features and specifications, installation procedures, and
basic functions testing, as well as operating procedures for using both front panel
control and remote analog programming functions.
Who Should Use This Manual
This manual is designed for the user who is familiar with basic electrical laws
especially as they apply to the operation of power supplies. This implies a
recognition of Constant Voltage and Constant Current operating modes and the
control of input and output power, as well as the observance of safe techniques while
making supply or pin connections and any changes in switch settings.
Main Sections
Section 1 Features and Specifications Describes the power supply and lists
its features and specifications.
Section 2 Installation Goes through basic setup procedures. Describes
inspection, cleaning, shipping, and storage procedures. Includes AC input
connection, basic functions testing, and load and sense lines connections.
Section 3 Operation Provides procedures for local (front panel) operation.
Includes procedures for using over voltage protection, shutdown function, multiple
supplies, and over temperature protection.
Section 4 Calibration Includes calibration for programming and readback
accuracy.
Manual Revisions
The current release of this manual is listed below. Updates may be issued as an
addendum.
Revision A (2003-12)
TM-25OP-01XN.book Page vii Monday, April 5, 2004 8:58 AM

About This Manual
viii Operating Manual for XKW 3kW Series Power Supply
Power Supply Safety Markings
Alternating Current Off (Supply)
Earth (Ground) Terminal Caution (Hot Surface)
Protective Conductor Terminal Caution (Check manual for
additional information.)
On (Supply)
TM-25OP-01XN.book Page viii Monday, April 5, 2004 8:58 AM

Revision A ix
Contents
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Section 1.
Features and
Specifications
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Features and Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Front Panel Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Rear Panel Connectors and Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Additional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Input Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Additional Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Remote Programming and Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Environmental Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Section 2.
Installation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Basic Setup Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Inspection, Cleaning, and Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Periodic Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Returning Power Supplies to the Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Return Material Authorization Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Packaging for Shipping or Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Location, Mounting and Ventilation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Ventilation Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Bus Bar Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
AC Input Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
AC Input Connector and Voltage Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
AC Input Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
AC Input Wire Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Input Line Impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Functional Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Voltage Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Current Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Front Panel Function Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
TM-25OP-01XN.book Page ix Monday, April 5, 2004 8:58 AM

x Operating Manual for XKW 3kW Series Power Supply
Controls, Connectors, and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Load Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Load Conductor Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Load Wiring Length for Operation with Sense Lines. . . . . . . . . . . . . . . . . . . . . 38
Noise and Impedance Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Making the Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Connecting Single Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Load Connection and Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Local and Remote Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Local Programming Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Local Mode Default Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Setting Output Voltage and Current Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Using Remote Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Connecting Remote Sensing Lines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Section 3.
Operation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Accessing Advanced Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Configuring for Remote Programming, Sensing, and Monitoring . . . . . . . . . . . . . . . 48
Programming, Monitoring, and Control Functions. . . . . . . . . . . . . . . . . . . . . . . 48
Locating Jumpers, Switch, and Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Resetting Jumpers and Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Making J3 Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Remote Programming of Output Voltage and Current Limit . . . . . . . . . . . . . . . . . . . 54
Remote Programming Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Programming Output Voltage and Current Limit with the REM/LOC Switch. . . 55
Programming Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Programming Output Current Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Using Over Voltage Protection (OVP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Front Panel OVP Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Resetting the OVP Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Programming OVP with an External Voltage Source . . . . . . . . . . . . . . . . . . . . 63
Using Over Temperature Protection (OTP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Resetting the OTP circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Using the Shutdown Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
STANDBY Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Programming the Shutdown Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
AC/DC Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Shutdown Application Contact Closure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Remote Monitoring of Readback Signals and Status Indicators . . . . . . . . . . . . . . . . 72
Readback Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Using Multiple Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Configuring Multiple Supplies for Series Operation. . . . . . . . . . . . . . . . . . . . . . 73
Configuring Multiple Supplies for Parallel Operation. . . . . . . . . . . . . . . . . . . . . 74
TM-25OP-01XN.book Page x Monday, April 5, 2004 8:58 AM

Revision A xi
Configuring Multiple Supplies for Split Supply Operation. . . . . . . . . . . . . . . . . . 76
Section 4.
Calibration
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Calibration Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Service Environment and Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Accessing Calibration Potentiometers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Calibrating for Programming Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Voltage Programming Circuit Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Current Programming Circuit Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Voltage Readback Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Current Readback Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Battery Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
TM-25OP-01XN.book Page xi Monday, April 5, 2004 8:58 AM

xii Operating Manual for XKW 3kW Series Power Supply
TM-25OP-01XN.book Page xii Monday, April 5, 2004 8:58 AM

Revision A xiii
List of Figures
Figure 1.1 Power Supply Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 1.2 Power Supply Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 2.1 Shipping or Storage Carton Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 2.2 Stripped Wire Installed in Strain Relief . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 2.3 Connector J3 Configuration for Local Operation . . . . . . . . . . . . . . . . . 35
Figure 2.4 Maximum Load Wire Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 2.5 Single Load with Local Sensing (Default) . . . . . . . . . . . . . . . . . . . . . . 40
Figure 2.6 Single Load with Remote Sensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 2.7 Multiple Loads with Local Sensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 2.8 Multiple Loads with Remote Sensing. . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 2.9 Local Mode Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 2.10 Connecting Remote Sense Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 3.1 J3 Program, Sense, and Monitor Connector Description . . . . . . . . . . 49
Figure 3.2 Internal Jumpers and Switch (Default Settings Shown). . . . . . . . . . . . 50
Figure 3.3 Locating Jumpers, Switch, and Connector . . . . . . . . . . . . . . . . . . . . . 51
Figure 3.4 Programming Output Voltage and Current Limit . . . . . . . . . . . . . . . . . 56
Figure 3.5 Programming Output Voltage with a 0-5Vdc Source. . . . . . . . . . . . . . 57
Figure 3.6 Programming Output Voltage with a 0-10Vdc Source. . . . . . . . . . . . . 58
Figure 3.7 Programming Output Voltage with a 0-1mA Source . . . . . . . . . . . . . . 58
Figure 3.8 Programming Output Voltage with a 5k ohm Resistance . . . . . . . . . . 59
Figure 3.9 Programming Output Current Limit with a 0-5Vdc Source. . . . . . . . . . 59
Figure 3.10 Programming Output Current Limit with a 0-10Vdc Source. . . . . . . . . 60
Figure 3.11 Programming Output Current Limit with a 0-1mA Source . . . . . . . . . . 61
Figure 3.12 Programming Output Current Limit with a 5k ohm Resistance . . . . . . 61
Figure 3.13 Remote Programming of OVP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Figure 3.14 Remote Programming of OVP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Figure 3.15 Using Shutdown with a TTL Compatible (Positive Logic) . . . . . . . . . . 66
Figure 3.16 Using Shutdown with a TTL Compatible (Negative Logic) . . . . . . . . . 66
Figure 3.17 Using Shutdown with an AC or DC Input (Positive Logic) . . . . . . . . . . 67
Figure 3.18 Using Shutdown with an AC or DC Input (Negative Logic) . . . . . . . . . 68
Figure 3.19 Using Shutdown with Contact Closure of a Normally OPEN Relay. . . 69
Figure 3.20 Using Shutdown with Contact Closure of an OPEN Relay . . . . . . . . . 70
Figure 3.21 Using Shutdown with Contact Closure of a CLOSED Relay . . . . . . . . 70
Figure 3.22 Using Shutdown with Contact Closure of a CLOSED Relay . . . . . . . . 71
Figure 3.23 Series Operation of Multiple Supplies . . . . . . . . . . . . . . . . . . . . . . . . . 74
Figure 3.24 Parallel Operation of Multiple Supplies . . . . . . . . . . . . . . . . . . . . . . . . 75
TM-25OP-01XN.book Page xiii Monday, April 5, 2004 8:58 AM

List of Figures
xiv Operating Manual for XKW 3kW Series Power Supply
Figure 3.25 Split Supply Operation of Multiple Supplies . . . . . . . . . . . . . . . . . . . . 76
Figure 3.26 Split Supply Operation of Multiple Supplies . . . . . . . . . . . . . . . . . . . . 77
Figure 4.1 Calibration Adjustment Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
TM-25OP-01XN.book Page xiv Monday, April 5, 2004 8:58 AM

Revision A xv
List of Tables
Table 1.1 Available Voltage and Current Ranges . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 1.2 Electrical Specifications for 8 V to 40 V Models . . . . . . . . . . . . . . . . . 21
Table 1.3 Electrical Specifications for 55 V to 300 V Models . . . . . . . . . . . . . . . 22
Table 2.1 Basic Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 2.2 AC Connections for Single and Three Phase Input. . . . . . . . . . . . . . . 34
Table 2.3 Current Carrying Capacity for Load Wiring . . . . . . . . . . . . . . . . . . . . . 38
Table 3.1 Remote Programming Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 3.2 Switch Settings for TTL Shutdown Circuit Logic . . . . . . . . . . . . . . . . . 66
Table 3.3 Switch Settings for AC/DC Shutdown Circuit Logic. . . . . . . . . . . . . . . 67
Table 3.4 Relay and Switch Settings for Contact Closure . . . . . . . . . . . . . . . . . . 69
Table 3.5 Supply Settings for Remote Monitoring of Readback Signals . . . . . . . 72
Table 3.6 Power Supply Settings for Status Indicator Signals. . . . . . . . . . . . . . . 72
Table 4.1 Voltage Programming Calibration Procedures . . . . . . . . . . . . . . . . . . 82
Table 4.2 Current Programming Calibration Procedures. . . . . . . . . . . . . . . . . . . 83
Table 4.3 Voltage Readback Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Table 4.4 Current Readback Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
TM-25OP-01XN.book Page xv Monday, April 5, 2004 8:58 AM

List of Tables
xvi Operating Manual for XKW 3kW Series Power Supply
TM-25OP-01XN.book Page xvi Monday, April 5, 2004 8:58 AM

Revision A 17
Section 1. Features and Specifications
Description
This series of power supplies provides highly stable, variable DC output voltage and
current at 3000 Watts of output power. You can select from several remote control
choices: standard analog programming, optional isolated programming or readback,
and optional GPIB programming or RS-232 control. It is designed for a broad range
of development, system and burn-in applications and uses high frequency switching
regulator technology to achieve high power density in a small package size. See
Table 1.1. for the list of available models.
Table 1.1 Available Voltage and Current Ranges
Model Voltage Range Current Range
8-350 0-8 V 0-350 A
10-300 0-10 V 0-300 A
12-250 0-12 V 0-250 A
20-150 0-20 V 0-150 A
40-75 0-40 V 0-75 A
55-55 0-55 V 0-55 A
60-50 0-60 V 0-50 A
80-37 0-80 V 0-37 A
150-20 0-150 V 0-20 A
300-10 0-300 V 0-10 A
TM-25OP-01XN.book Page 17 Monday, April 5, 2004 8:58 AM

Features and Specifications
Features and Options
18 Operating Manual for XKW 3kW Series Power Supply
Features and Options
•Simultaneous digital display of both voltage and current.
•Ten-turn front panel voltage and current controls for high resolution setting of
the output voltage and current from zero to the rated output.
•Automatic mode crossover into current or voltage mode.
•Optional 190-250 Vac input voltage, Delta configuration three phase, 47–63 Hz,
or 200-250 Vac input voltage, single phase, 47–63 Hz.
•High frequency switching technology allows high power density, providing
increased power output in a small, light package.
•Multiple units can be connected in parallel or in series to provide increased
current or voltage and operated in master/slave mode.
•Remote sensing to compensate for losses in power leads up to 1 V per lead.
•Adjustable Over Voltage Protection (OVP).
•External TTL, AC, or DC shutdown.
•Remote voltage, current limit and OVP programming with selectable
programming ranges.
•External indicator signals for remote monitoring of OVP status, local/remote
programming status, thermal shutdown and output voltage and current.
•Isolated analog remote programming control of the output voltage or current
with the optional ISOL Interface.
•Optional internal GPIB control for remote digital programming and readback
from a computer.
•Front panel push button control of Output Standby Mode, OVP reset,
Remote/Local Programming Mode selection and preview of voltage, current and
OVP setpoints.
•Optional bus bar cover may be purchased as there may be a high voltage issue
for benchtop units operating above 42 Vdc.
TM-25OP-01XN.book Page 18 Monday, April 5, 2004 8:58 AM