Ametek Sorensen SGA Series DC User manual

M550129-01 Rev AF www.programmablepower.com
SGA Series DC
Power Supplies
Operation Manual

M550129-01 Rev AF iii
About AMETEK
AMETEK Programmable Power, Inc., a unit of AMETEK Electronic Instruments Group (a division
of AMETEK, Inc), is a global leader in the design and manufacture of precision, programmable
power supplies for R&D, test and measurement, process control, power bus simulation and
power conditioning applications across diverse industrial segments. From bench-top supplies to
rack-mounted industrial power subsystems, AMETEK Programmable Power is the proud
manufacturer of Elgar, Sorensen, California Instruments, Power Ten, and Amrel brand power
supplies and electronic loads.
AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical
devices with annualized sales of $3.6 billion. The company has over 14,000 colleagues working
at more than 120 manufacturing facilities and more than 80 sales and service centers in the
United States and around the world.
Trademarks
AMETEK is a registered trademark of AMETEK, Inc.
Other trademarks, registered trademarks, and product names are the property of their respective
owners and are used herein for identification purposes only.
Notice of Copyright
SGA Series DC Power Supplies Operation Manual © 2014, AMETEK Programmable Power, Inc.,
All rights reserved.
Exclusion for Documentation
UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER,
INC. (“AMETEK”)
(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF
ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER
DOCUMENTATION.
(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, AND
(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH,
ALTHOUGH STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE
TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED AMETEK
CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION, WHICH IS POSTED
AT WWW.PROGRAMMABLEPOWER.COM.
Date and Revision
May 2014, Rev AF
Part Number
M550129-01
Contact Information
Telephone: [phone] (toll free in North America)
858 450 0085 (direct)
Fax: [phone]
Email: [e-mail]
[e-mail]
Web: www.programmablepower.com

iv M550129-01 Rev AF
Product Family: SGA Series DC Power Supplies
Warranty Period: Five Years
Warranty Terms
AMETEK Programmable Power, Inc. (“AMETEK”) provides this written warranty covering the
Product stated above, and if the Buyer discovers and notifies AMETEK in writing of any defect in
material or workmanship within the applicable warranty period stated above, then AMETEK may,
at its option: repair or replace the Product; or issue a credit note for the defective Product; or
provide the Buyer with replacement parts for the Product.
The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in
accordance with the return procedure specified below. AMETEK will, at its expense, deliver the
repaired or replaced Product or parts to the Buyer. Any warranty of AMETEK will not apply if the
Buyer is in default under the Purchase Order Agreement or where the Product or any part
thereof:
is damaged by misuse, accident, negligence or failure to maintain the same as
specified or required by AMETEK;
is damaged by modifications, alterations or attachments thereto which are not
authorized by AMETEK;
is installed or operated contrary to the instructions of AMETEK;
is opened, modified or disassembled in any way without AMETEK’s consent; or
is used in combination with items, articles or materials not authorized by AMETEK.
The Buyer may not assert any claim that the Products are not in conformity with any warranty
until the Buyer has made all payments to AMETEK provided for in the Purchase Order
Agreement.
Product Return Procedure
1. Request a Return Material Authorization (RMA) number from the repair facility (must be
done in the country in which it was purchased):
In the USA, contact the AMETEK Repair Department prior to the return of the
product to AMETEK for repair:
Telephone: [phone], ext. 2295 or ext. 2463 (toll free North America)
858-450-0085, ext. 2295 or ext. 2463 (direct)
Outside the USA, contact the nearest Authorized Service Center (ASC). A full
listing can be found either through your local distributor or our website,
www.programmablepower.com, by clicking Support and going to the Service Centers
tab.
2. When requesting an RMA, have the following information ready:
Model number
Serial number
Description of the problem
Note: Unauthorized returns will not be accepted and will be returned at the shipper’s expense.
Note: A returned product found upon inspection by AMETEK, to be in specification is subject to
an evaluation fee and applicable freight charges

M550129-01 Rev AF
v
IMPORTANT SAFETY INSTRUCTIONS
Before applying power to the system, verify that your product is configured properly for
your particular application.
WARNING!
Hazardous voltages might be present when covers are removed. Qualified
personnel must use extreme caution when servicing this equipment. Circuitry,
test points, and output voltages might be floating with respect to chassis
ground. Do not touch electrical circuits, and use appropriately rated test
equipment. A safety ground wire must be connected from the chassis to the
AC mains input when servicing this equipment.
WARNING!
This equipment contains ESD sensitive input/output connection ports. When
installing equipment, follow ESD safety procedures. Electrostatic discharges
might cause damage to the equipment.
Only qualified personnel, who understand and deal with attendant hazards in power
supplies, are allowed to perform installation and servicing.
Ensure that the AC mains input ground is connected properly to the chassis safety
ground connection. Similarly, other power ground lines, including those to application
and maintenance equipment, must be grounded properly for both personnel and
equipment safety. Always ensure that facility AC mains input is de-energized prior to
connecting or disconnecting any cable.
In normal operation from the front panel, the operator does not have access to
hazardous voltages within the chassis. However, depending on the application
configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY might be
normally generated on the output terminals. The user must ensure that the output power
lines are labeled properly as to the safety hazards and that any possibility for inadvertent
contact with hazardous voltages is eliminated.
Guard against risks of electrical shock during open cover checks by not touching any
portion of the electrical circuits. Even when power is off, capacitors may retain an
electrical charge. Use safety glasses during open cover checks to avoid personal injury
by any sudden component failure.
Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the
subsidiary sales organizations can accept any responsibility for personnel, material or
inconsequential injury, loss or damage that results from improper use of the equipment
and accessories.

vi M550129-01 Rev AF
SAFETY SYMBOLS
WARNING: Electrical Shock Hazard
HAZARD: Strong oxidizer
GENERAL WARNING/CAUTION: Read the accompanying
message for specific information.
BURN HAZARD: Hot Surface Warning. Allow to cool before
servicing.
DO NOT TOUCH: Touching some parts of the instrument without
protection or proper tools could result in damage to the part(s)
and/or the instrument.
TECHNICIAN SYMBOL: All operations marked with this symbol are
to be performed by qualified maintenance personnel only.
ELECTRICAL GROUND: This symbol inside the instrument marks
the central safety grounding point for the instrument.

M550129-01 Rev AF
vii
FCC NOTICE
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area
is likely to cause harmful interference in which case the user will be required to correct
the interference at his own expense.

viii M550129-01 Rev AF
ABOUT THIS MANUAL AND REGULATORY COMPLIANCE
This manual has been written for the Sorensen SGA Series of power supplies, which
have been designed and certified to meet the Low Voltage and Electromagnetic
Compatibility Directive Requirements of the European Community.
These models have been designed and tested to meet the Electromagnetic Compatibility
directive (European Council directive 2004/108/EC; generally referred to as the EMC
directive) and to the requirements of the Low Voltage directive (European Council
directive 2006/95/EC, 93/68/EEC, dated 22 July 1993). In addition these models have
been found compliant with FCC 47 CFR Part 15, Subpart B107(e) Class A, 109(g)
Class A.
Since the Low Voltage Directive is to ensure the safety of the equipment operator,
universal graphic symbols have been used both on the unit itself and in this manual to
warn the operator of potentially hazardous situations (see Safety Instruction page).

M550129-01 Rev AF ix
CONTENTS
SECTION 1 OVERVIEW .......................................... 1-1
1.1 General Description ...............................................................................................1-1
1.2 Specifications.........................................................................................................1-3
1.2.1 Environmental Characteristics..................................................................................1-3
1.2.2 Electrical Characteristics...........................................................................................1-3
1.2.3 SGA Series Voltage and Current Specifications ......................................................1-7
1.2.4 Physical Characteristics............................................................................................1-8
SECTION 2 INSTALLATION ................................... 2-1
2.1 Inspection...............................................................................................................2-1
2.2 Contents of Shipment............................................................................................2-1
2.3 Location and Mounting..........................................................................................2-2
2.3.1 Rack Mounting..........................................................................................................2-3
2.3.2 K550212-01 ASSEMBLY STEPS (OPTION KIT for 3U models)..............................2-4
2.3.3 K550213-01 ASSEMBLY STEPS (OPTION KIT for 6U models)..............................2-6
2.3.4 Chassis Removal from Rack ....................................................................................2-7
2.4 Input/Output Connections .....................................................................................2-8
2.5 Wire selection.......................................................................................................2-11
2.5.1 Wire Size.................................................................................................................2-11
2.6 Load Considerations............................................................................................2-14
2.6.1 Inductive and STORED-ENERGY Loads ...............................................................2-14
2.7 Outline and Installation Drawings.......................................................................2-15
SECTION 3 OPERATION......................................... 3-1
3.1 Introduction............................................................................................................3-1
3.1.1 Front/rear Panels ......................................................................................................3-1
3.2 Shaft Lock (Option)................................................................................................3-9
3.3 Front Panel Operation..........................................................................................3-10
3.3.1 Initial Setup .............................................................................................................3-10
3.3.2 constant-Voltage Mode Operation..........................................................................3-11
3.3.3 Constant-Current Mode Operation .........................................................................3-12

Contents Sorensen SGA Series
x M550129-01 Rev AF
3.3.4 Overvoltage Protection ...........................................................................................3-13
3.4 Remote Analog Control Connector (J1)..............................................................3-14
3.5 Remote Current Programming ............................................................................3-18
3.5.1 Remote Current Programming by Resistance........................................................3-18
3.5.2 Remote Current Programming by Voltage Source.................................................3-19
3.6 Remote Voltage Programming ............................................................................3-20
3.6.1 Remote Voltage Programming by Resistance........................................................3-20
3.6.2 Remote Voltage Programming by Voltage Source.................................................3-21
3.7 Remote Overvoltage Protection Programming..................................................3-22
3.8 Remote Output ON/OFF Control..........................................................................3-23
3.8.1 Remote Output ON/OFF by Contact Closure .........................................................3-23
3.8.2 Remote Output ON/OFF Control by External Source.............................................3-23
3.8.3 Remote Shutdown (S/D).........................................................................................3-24
3.9 Remote Sensing...................................................................................................3-25
3.10 Floating and Polarized Output.............................................................................3-28
3.11 Parallel and Series Operation..............................................................................3-29
3.11.1 Parallel Operation ...................................................................................................3-29
3.11.2 Series Operation.....................................................................................................3-31
SECTION 4 CALIBRATION AND VERIFICATION.... 4-1
4.1 Introduction............................................................................................................4-1
4.1.1 Calibration and Verification Cycle.............................................................................4-1
4.1.2 Preparation ...............................................................................................................4-1
4.2 Calibration and Verification Procedures...............................................................4-2
4.2.1 Constant-Current Mode ............................................................................................4-3
4.2.2 Constant-Voltage Mode............................................................................................4-3
4.2.3 Resistive-Control Programming Current Sources ....................................................4-4
4.3 Remote Isolated Analog Interface (Option) Calibration and Verification
Procedures .......................................................................................................................4-5
4.3.1 Constant-Current Mode ............................................................................................4-5
4.3.2 Constant-Voltage Mode............................................................................................4-6
SECTION 5 MAINTENANCE ................................... 5-1
5.1 Introduction............................................................................................................5-1
5.2 Preventive Maintenance.........................................................................................5-1
5.3 Fuses.......................................................................................................................5-3