Ametek Sorensen SGI Series User manual

M550221-01 Rev U www.programmablepower.com
SGI Series DC
Power Supplies
Operation Manual

M550221-01 Rev U iii
About AMETEK
AMETEK Programmable Power, Inc., part of the Programmable Power Division of AMETEK, Inc.,
is the new 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 and Power Ten brand power supplies.
Headquarters, AMETEK, Inc. is a leading global manufacturer of electronic instruments and
electromechanical devices with annualized sales of $2.5 billion. The Company has over 11,000
colleagues working at more than 80 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
SGI Series DC Power Supplies Operation Manual © January 2013, 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
August 2013, Rev U
Part Number
M550221-01
Contact Information
Telephone: [phone] (toll free in North America)
858 450 0085 (direct)
Fax: [phone]
Email: [e-mail]
[e-mail]
Web: www.programmablepower.com

M550221-01 Rev U iv
Product Family: SGI 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.

M550221-01 Rev U 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.

M550221-01 Rev U vi
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.

M550221-01 Rev U 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 M550221-01 Rev U
ABOUT THIS MANUAL
This manual has been written expressly for the Sorensen SGI Series of power supplies
that 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).

M550221-01 Rev U 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 SGI 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 6U Chassis Removal from Rack.....................................................................2-3
2.4 Input/Output Connections ...........................................................................2-4
2.5 Wire Selection ..............................................................................................2-7
2.5.1 Wire Size ........................................................................................................2-7
2.6 LOAD CONSIDERATIONS..........................................................................2-10
2.6.1 Inductive and Stored-Energy Loads.............................................................2-10
2.7 Outline Drawings........................................................................................2-11
SECTION 3 OPERATION......................................... 3-1
3.1 Introduction..................................................................................................3-1
3.1.1 Front/Rear Panels...........................................................................................3-1
3.2 Basic Operation and Output Verification....................................................3-9
3.2.1 Initial Setup.....................................................................................................3-9

Contents Sorensen SGI Series
x M550221-01 Rev U
3.2.2 Default Programming Menu............................................................................3-9
3.2.3 Constant-Voltage Mode Operation...............................................................3-10
3.2.4 Constant-Current Mode Operation...............................................................3-11
3.2.5 Overvoltage Protection.................................................................................3-12
3.3 Initial Start-Up Displays.............................................................................3-13
3.4 Display Elements........................................................................................3-14
3.5 Navigation...................................................................................................3-15
3.6 Editing.........................................................................................................3-16
3.6.1 Aborting an Edit............................................................................................3-17
3.7 Menu Map....................................................................................................3-18
3.7.1 Home Menu..................................................................................................3-18
3.7.2 Default Programming Menu..........................................................................3-18
3.7.3 Navigating from Home Menu Page 1 ...........................................................3-18
3.7.4 Navigating from Home Menu Page 2 ...........................................................3-19
3.7.5 Navigating from Home Menu Page 3 ...........................................................3-19
3.7.6 Sequence Menu............................................................................................3-20
3.7.7 Sequence Programming Operation..............................................................3-20
3.7.8 Constant-Power Setup Menu .......................................................................3-21
3.7.9 Remote Menu...............................................................................................3-21
3.7.10 Remote Control Screen Examples...............................................................3-22
3.7.11 Warning Screens..........................................................................................3-22
3.7.12 Other Screens...............................................................................................3-22
3.8 Programming/Operating Functions ..........................................................3-22
3.8.1 Voltage, Current, and Overvoltage Protection Programming.......................3-22
3.8.2 Save..............................................................................................................3-23
3.8.3 Recall............................................................................................................3-24
3.8.4 Sequencing...................................................................................................3-25
3.8.5 Constant-Power Mode..................................................................................3-33
3.8.6 Home Timeout..............................................................................................3-34
3.8.7 Display Brightness........................................................................................3-34
3.8.8 Lock Key.......................................................................................................3-34
3.8.9 Language......................................................................................................3-34
3.8.10 Info................................................................................................................3-35
3.8.11 Remote .........................................................................................................3-35
3.8.12 System..........................................................................................................3-38
3.8.13 Warning Screens..........................................................................................3-39
3.9 Remote Analog Control Connector (J1)....................................................3-39
3.10 Remote Current Programming ..................................................................3-43
3.10.1 Remote Current Programming by Resistance..............................................3-43

Sorensen SGI Series Contents
M550221-01 Rev U xi
3.10.2 Remote Current Programming by Voltage Source.......................................3-44
3.11 Remote Voltage Programming..................................................................3-45
3.11.1 Remote Voltage Programming by Resistance .............................................3-45
3.11.2 Remote Voltage Programming by Voltage Source.......................................3-46
3.12 Remote Overvoltage Programming...........................................................3-47
3.13 Remote Output On/Off Control..................................................................3-48
3.13.1 Remote Output ON/OFF by Contact Closure...............................................3-48
3.13.2 Remote Output ON/OFF Control by External Source ..................................3-48
3.13.3 Remote Shutdown(S/D)................................................................................3-49
3.14 Remote Sensing.........................................................................................3-50
3.15 Floating and Polarized Output...................................................................3-53
3.16 Parallel and Series Operation....................................................................3-54
3.16.1 Parallel Operation.........................................................................................3-54
3.16.2 Series Operation...........................................................................................3-56
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
4.2.4 Change Calibration Date ................................................................................4-5
4.3 Remote Isolated Analog Interface (Option) Calibration and Verification
Procedure...............................................................................................................4-5
4.3.1 Constant-Current Mode..................................................................................4-5
4.3.2 Constant-Voltage Mode..................................................................................4-6
4.3.3 Change Calibration Date ................................................................................4-7
SECTION 5 MAINTENANCE ................................... 5-1
5.1 Introduction..................................................................................................5-1
5.2 Preventive Maintenance...............................................................................5-1
5.3 Fuses.............................................................................................................5-3

Contents Sorensen SGI Series
xii M550221-01 Rev U
LIST OF TABLES
Table 2–1. Maximum AC Current Ratings, PFC Models .............................................2-5
Table 2–2. Maximum AC Current Ratings, Non-PFC Models.......................................2-5
Table 2–3. Input/Output Connectors...........................................................................2-5
Table 2–4. Input Terminal Connections.......................................................................2-6
Table 2–5. Output Terminal Connections....................................................................2-6
Table 2–6. Recommended Lugs.................................................................................2-6
Table 2–7. Recommended Sense Connector Tools....................................................2-6
Table 2–8. Minimum Wire Size ...................................................................................2-7
Table 2–9. Wire Resistance and Voltage Drop, 20°C..................................................2-9
Table 3–1. Front Panel Controls and Indicators..........................................................3-2
Table 3–2. Rear Panel Connectors and Controls, Standard........................................3-6
Table 3–3. Rear Panel Connectors and Controls, GPIB Option ..................................3-7
Table 3–4. Rear Panel Connectors and Controls, Ethernet Option .............................3-8
Table 3–5. Analog Control Connector (J1), Designations and Functions...................3-42
Table 5–1. Fuse Ratings.............................................................................................5-3

Sorensen SGI Series Contents
M550221-01 Rev U xiii
LIST OF FIGURES
Figure 1-1. Model Number Decoding ..........................................................................1-2
Figure 2-1. Diode Connection...................................................................................2-10
Figure 2-2. Installation Drawing, 3U Models 10V-30V...............................................2-12
Figure 2-3. Installation Drawing, 3U Models 40V-600V............................................2-13
Figure 2-4. Installation Drawing, 3U Models 800V and 1000V .................................2-14
Figure 2-5. Installation Drawing, 6U Models 20kW-30kW.........................................2-15
Figure 2-6. Rear Panel, Standard, 3U Models 10V-30V............................................2-16
Figure 2-7. Rear Panel, GPIB Option, 3U Models 10V-30V ......................................2-17
Figure 2-8. Rear Panel, Ethernet Option, 3U Models 10V-30V .................................2-18
Figure 2-9. Rear Panel, Standard, 3U Models 40V-600V..........................................2-19
Figure 2-10. Rear Panel, GPIB Option, 3U Models 40V-600V ..................................2-20
Figure 2-11. Rear Panel, Ethernet Option, 3U Models 800V and 1000V...................2-21
Figure 2-12. Rear Panel, Standard, 6U Models 20kW-30 kW ...................................2-22
Figure 2-13. Rear Panel, GPIB Option, 6U Models 20kW-30 kW..............................2-23
Figure 2-14. Rear Panel, Ethernet Option, 6U Models 20kW-30 kW.........................2-24
Figure 2-15. Instructions for Assembly of AC and DC Covers...................................2-25
Figure 3-1. Front Panel Controls and Indicators (3U Model Shown)............................3-1
Figure 3-2. Rear Panel Interface, Standard, 3U Models 10V-30V...............................3-3
Figure 3-3. Rear Panel Interface, GPIB Option, 3U Models 10V-30V..........................3-3
Figure 3-4. Rear Panel Interface, Ethernet Option, 3U Models 10V-30V.....................3-3
Figure 3-5. Rear Panel Interface, Standard, 3U Models 40V-600V.............................3-4
Figure 3-6. Rear Panel Interface, GPIB Option, 3U Models 40V-600V........................3-4
Figure 3-7. Rear Panel Interface, Ethernet Option, 3U Models 800V and 1000V ........3-4
Figure 3-8. Rear Panel Interface, Standard, 6U Models 20kW-30kW..........................3-5
Figure 3-9. Rear Panel Interface, GPIB Option, 6U Models 20kW-30kW....................3-5
Figure 3-10. Rear Panel Interface, Ethernet Option, 6U Models 20kW-30kW .............3-5
Figure 3-11. Burn-in Sequence Example ..................................................................3-30
Figure 3-12. Constant-Power Example .....................................................................3-33
Figure 3-13. Analog Control Connector (J1) Pin-Out.................................................3-40
Figure 3-14. Remote Current Programming Using Resistance..................................3-43
Figure 3-15. Remote Current Programming Using 0-5 VDC or 0-10 VDC Source.....3-44
Figure 3-16. Remote Voltage Programming Using Resistance .................................3-45
Figure 3-17. Remote Voltage Programming Using 0-5 VDC or 0-10 VDC Source.....3-46
Figure 3-18. Remote Overvoltage Programming Using DC Voltage Source..............3-47
Figure 3-19. Remote Output On/Off Control by Contact Closure...............................3-48
Figure 3-20. Remote Output On/Off Using Isolated AC or DC Source ......................3-48
Figure 3-21. Remote Output On/Off Using Isolated TTL/CMOS Source....................3-49
Figure 3-22. Remote Shutdown Using DC Voltage Source.......................................3-49
Figure 3-23. Remote Voltage Sensing Network .........................................................3-50

Contents Sorensen SGI Series
xiv M550221-01 Rev U
Figure 3-24. Remote Sense Connection at the Load, 10V-800V Models...................3-51
Figure 3-25. Remote Sense Connection at the Load, 1000V Model..........................3-52
Figure 3-26. Parallel Connection and Remote Sense................................................3-55
Figure 4-1. Potentiometer Locations ...........................................................................4-8

M550221-01 Rev U 1-1
SECTION 1
OVERVIEW
1.1 General Description
The Sorensen SGI Series are general purpose power supplies designed
specifically for laboratory test and systems applications requiring
programmable DC sources with good performance characteristics, such as
accuracy, regulation, and ripple/noise. These power supplies are constant-
current/constant-voltage supplies with an automatic crossover feature.
A variety of user interfaces are available, ranging from manual front panel control
and standard non–isolated remote analog control, to optional GPIB or isolated
remote analog control.
Refer to Figure 1-1 for decoding of the SG Series model number.

Overview Sorensen SGI Series
1-2 M550221-01 Rev U
For units up to 999 V/999 A, voltage and current are represented in numeric format, e.g., “100”
represents 100 V. For units at 1000 V/1000 A and above, the voltage and current are
represented by the format “xKx”, e.g., “1K0” represents 1000 V.
Option
Description
Control Options
A: Analog
I: Intelligent
Input Options
C: Input Voltage 208/230 VAC, 3-Phase
D: Input Voltage 380/400 VAC, 3-Phase
E: Input Voltage 440/480 VAC, 3-Phase
Remote Control
Options
0A: No Option
1A: IEEE-488.2 + RS-232C
1C: Ethernet + RS-232C
1D: Isolated Analog Interface
1E: Shaft Locks
2A: Combined Options 1A + 1D
2C: Combined Options 1A + 1E (SGA Only)
2G: Combined Options 1C + 1D
2H: Combined Options 1C + 1E (SGA Only)
2J: Combined Options 1D + 1E (SGA Only)
3C: Combined Options 1A + 1D + 1E (SGA Only)
3G: Combined Options 1C + 1D + 1E (SGA Only)
Process Options
AA: No option
AB: Certificate of Calibration (includes test data)
Modifications
AJ: Front panel dust filter (3U models only)
CV: 400Hz AC input at 208 VAC for 6U units only; does not
carry CE, CSA or UL certification; (standard in 3U models)
PF: Passive power factor correction to 0.9 for 40V to 800V
models; (standard in 10V-30V, 50V, and 1000V models)
Figure 1-1. Model Number Decoding
SG I 100 X100 C - 1A AA AJ
Control Designation
A=Analog
I = Intelligent
Voltage
4-15 kW = "X"
20-30 kW = "/"
Current
Modifications
Process Options
Remote Control Options
Input Voltage Options

Sorensen SGI Series Overview
M550221-01 Rev U 1-3
1.2 Specifications
The following subsections provide environmental, electrical, and physical
characteristics for the SGI Series power supplies.
Note: Specifications are subject to change without notice.
Note: The SGI Series power supplies are intended for indoor use only. Refer
to Section 2.3 for use/location requirements.
1.2.1 Environmental Characteristics
Parameter
Specification
Ambient Temperature
Operating
0 to 50C
Storage
-25to 65C
Cooling
Forced convection with internal, linearly-variable-speed fans; vents on
front, sides and rear; units may be stacked without clearance above or
below.
Humidity
95% maximum, non-condensing, 0 to 50C; 45C maximum wet-bulb
temperature.
Altitude
5,000 ft (1,524 m) operating at full rated output power, derate 10% of
full power for every 1,000 ft (3,048 m) higher; non-operating to 40,000 ft
(12,192m)
Agency Approvals
CE Compliant: Certified to UL/CSA 61010 and IEC/EN 61010-1 by a
NRTL; LVD Categories: Installation Category II, Pollution Degree 2,
Class II Equipment, for Indoor Use Only;
EMC Directive, EN 61326:1998;
Semi-F47 Compliant
1.2.2 Electrical Characteristics
Note: Output voltage accuracy, regulation, and stability specifications are valid at the point
where the remote sense leads are connected.
Parameter
Specification
Input Power
Voltage
208/230 VAC ±10%, allowed range 187-253 VAC;
380/400 VAC ±10%, allowed range 342-440 VAC;
440/480 VAC ±10%, allowed range 396-528 VAC
Frequency
47 Hz to 63 Hz; 400 Hz at 208 VAC for 3U models; 400 Hz at
208 VAC for 6U models is an optional modification (“CV” in
model number) and does not carry CE, UL or CSA markings
Configuration
3–phase, 3–wire plus ground; not phase rotation sensitive;
neutral not used.

Overview Sorensen SGI Series
1-4 M550221-01 Rev U
Parameter
Specification
Power Factor (at full rated load; 50/60Hz); contact factory for power factor of specific models
PFC models: 10V-30V, 50V,
1000V, and models with optional
modification, “PF”
0.90, typical, for all AC input ratings; with passive power factor
correction (PFC)
Non-PFC models: 40V-800V
0.75, typical, for 208/230 VAC input;
0.72, typical, for 380/400 VAC input;
0.69, typical, for 440/480 VAC input;
power factor is not solely determined by power supply input
characteristics, but is dependent on the level of DC output power
and interaction with the source impedance of AC mains.
Efficiency
87%, typical, at full load, nominal AC line
Hold-Up Time
1/2 cycle, typical, for loss of all three phases (6.4 ms, typical for
800V/1000V models); 3 cycle, typical, for loss of one phase;
sustained missing phase will result in shutdown of the output.
Rated Output Power
4-15 kW for 3U chassis for10V-30V models;
5-15 kW for 3U chassis for 40V-1000V models;
20-30 kW for 6U chassis for 60V-600V models;
maximum output power is the product of the rated output voltage
and current; for specific values refer to Section 1.2.3.
Load Regulation (specified for ±100% rated load change, at nominal AC input voltage)
Voltage
±0.05%, maximum, of rated output voltage for 10V- 30V models;
±0.02%, maximum, of rated output voltage for 40V-1000V
models
Current
±0.1%, maximum, of rated output current
Line Regulation (specified for ±10% change of nominal AC line voltage, at constant load)
Voltage
±0.05%, maximum, of rated output voltage for 10V-30V models;
±0.01%, maximum, of rated output voltage for 40V-1000V
models
Current
±0.05%, maximum, of rated output current
Temperature Coefficient
Voltage
±0.02%/C, maximum, of rated output voltage
Current
±0.03%/C, maximum, of rated output current
Stability
±0.05%, maximum, of rated output voltage or current, over 8 hrs
at fixed line, load, and temperature, after 30 min warm-up
Output Voltage Ripple/Noise
Refer to Ripple/Noise specifications in tables of Section 1.2.3.
Load Transient Response
1 ms, typical, to recover within 0.75% of rated output voltage for
load step change of 50% of rated output current
Output Voltage Rise Time
(with rated load, resistive)
10 ms, maximum, from 10-90% of programming change from
zero to rated output voltage for 10V-30V models;
100 ms, maximum, from 5-95% of programming change from
zero to rated output voltage for 40V-1000V models;
contact factory for values of specific models

Sorensen SGI Series Overview
M550221-01 Rev U 1-5
Parameter
Specification
Output Voltage Fall Time
(with rated load, resistive)
10 ms, maximum, from 90-10% of programming change from
rated output voltage to zero for 10V-30V models;
contact factory for values of specific models
Output Voltage Fall Time
(with no load)
50 ms, maximum, from 90-10% of programming change from
rated output voltage to zero for 10V-30V models;
1.5 s, typical, from 100% to 10% of programming change from
rated output voltage to zero for 40V-1000V models;
contact factory for values of specific models
Front Panel Meter
Display Resolution
4 digit
Voltage Accuracy
(to actual output)
±(0.15% of rated output voltage + 0.1% of actual output + 1 digit)
for 10V-30V models;
±(0.1%, maximum, of rated output voltage + 1 digit) for
40V-1000V models
Current Accuracy
(to actual output)
±(0.4%, maximum, of rated output voltage + 1 digit)
Front Panel Programming
Voltage
±(0.1% of rated output voltage + 0.1% of actual output voltage)
for 10V-30V models;
±0.1%, maximum, of rated output voltage for 40V-1000V models
Current
±(0.4% of rated output current + 0.1% of actual output current)
for 10V-30V models;
±0.4%, maximum, of rated output current for 40V-1000V models
Overvoltage Protection (OVP)
±1%, maximum, of rated output voltage
Remote Sensing
Connection
Voltage accuracy/regulation specifications apply at the point
where the remote sense leads are connected.
Line Drop
1 V, maximum per line for 10V-20V models;
1.5 V, maximum per line for 30V model;
5%, maximum of rated output voltage per line for models, 40V to
less than 160V;
2%, maximum of rated output voltage per line for models greater
than or equal to 160V;
higher levels of line drop is allowed, but output voltage
regulation specifications no longer apply.
Line Drop Effect on Output
Voltage
Rated output voltage applies at the rear panel output terminals,
and line drop voltage subtracts from the voltage available at the
load terminals
Remote Analog Interface
Programming Accuracy
Voltage
±0.25%, maximum, of rated output voltage for 0-5 VDC range,
and ±0.5%, maximum, for 0-10 VDC range
Current
±1.0%, maximum, of rated output current for 0-5 VDC range,
and ±1.2%, maximum, for 0-10 VDC range for 10V-30V models;

Overview Sorensen SGI Series
1-6 M550221-01 Rev U
Parameter
Specification
±0.8%, maximum, of rated output current for 0-5 VDC range,
and ±1.0%, maximum, for 0-10 VDC range for 40V-1000V
models
Overvoltage Protection (OVP)
±1%, maximum, of rated output voltage
Readback Monitor Accuracy
Voltage
(of actual output value)
±0.5%, maximum, of rated output voltage
Current
(of actual output value)
±1%, maximum, of rated output current
Resistive-Control Programming
Voltage
0–5 kfor 0-100% of rated output voltage
Current
0–5 kfor 0-100% of rated output current
Voltage-Control Programming
Voltage
0–5 VDC or 0–10 VDC for 0-100% of rated output voltage
Current
0–5 VDC or 0–10 VDC for 0-100% of rated output current
Overvoltage Protection(OVP)
0.25–5.5 VDC for 5-110% or rated output voltage
Remote Control/Monitor Interface
On/Off control via contact closure, 6-120 VDC or 12-240 VAC,
and TTL or CMOS gate; output voltage and current monitors;
output voltage, current, and OVP programming; summary fault
status
Output Isolation
Output Float Voltage
Negative Output Terminal
±300 V(PK), maximum, with respect to chassis ground;
exceeding the limit will be detected as a fault by a protective
supervisory monitor and shutdown of the output will be
executed; this condition will be latched, requiring reset to
resume normal operation.
Isolation of optional Isolated
Analog Interface (J1) to output
negative terminal
1000 V(PK), maximum; Isolated Analog Interface (J1 signals)
are galvanically isolated from negative output terminal; operation
of Isolated Analog Interface signals should be at SELV safety
voltage conditions to chassis ground.
Reference of standard Non-
Isolated Analog Interface (J1) to
output negative terminal
The standard Non-Isolated Analog Interface (J1 signals) is
connected to the negative output terminal and, therefore, is not
isolated from the output.
Parallel Operation
Parallel Group
Up to 5 units, of the same voltage rating, may be connected in
parallel for additional output current; specifications apply as for
single unit, with the exception that each additional paralleled unit
will add 0.3% to the output current accuracy. Contact factory for
applications requiring paralleling more than five units.
Series Operation
Series Group
Up to 2 units, of the same current rating, may be connected in
series for additional output voltage; see restrictions in Output
Isolation section.