Elgar 3300 Series User manual

3300 Series
DC Power Supplies
Operation Manual
January 11, 2002 Document No. M520086-01 Rev A
©2002 by PowerTen. This document contains information proprietary to PowerTen. The information contained
herein is not to be duplicated or transferred in any manner without prior written permission from PowerTen.
Elgar Electronics Corporation
9250 Brown Deer Road
San Diego, CA 92121-2294
1-800-733-5427
Tel: [phone]
Fax: [phone]
Email: [e-mail]
www.elgar.com

M520086-01 ii
Safety Notice
Before applying power to the system, verify that the unit is configured properly for the user's
particular application.
The 3300 series of power supplies is intended for rack mounted application only. Use of the
power supplies outside of a rack mount enclosure will expose the user to high voltage and/or
high current sources. Extreme caution must be used under these circumstances.
The analog control inputs (connectors J1 and J2) on the rear panel are referenced to the
negative output of the power supply. Grounding the positive output of the power supply or
biasing the output of the supply above chassis potential will cause these inputs (along with the
output of the supply) to have a potentially hazardous offset voltage. Exercise caution under
these conditions. Under no circumstances should the output of the supply be biased more than
500 volts from chassis potential.
Installation and service must be performed only by properly trained and qualified
personnel who are aware of dealing with attendant hazards. This includes simple tasks
such as fuse verification.
Ensure that the AC power line ground is connected properly to the unit input connector
or chassis. Similarly, other power ground lines including those to application
maintenance equipment must be grounded properly for both personnel and equipment
safety.
Always ensure that facility AC input power is de-energized prior to connecting or disconnecting
the input/output power cables.
Warning: Lethal voltages may be present inside the power supply even when the AC input
voltage is disconnected. Only properly trained and qualified personnel should
remove covers and access the inside of the power supply.
During normal operation, the operator does not have access to hazardous voltages within the
chassis. However, depending on the user's application configuration, HIGH VOLTAGES
HAZARDOUS TO HUMAN SAFETY may be generated normally on the output terminals.
Ensure that the output power lines are labeled properly as to the safety hazards and that any
inadvertent contact with hazardous voltages is eliminated.
Due to filtering, the unit has high leakage current to the chassis. Therefore, it is essential to
operate this unit with a safety ground.
This unit is designed to be permanently connected to the power source and as such must have
a readily accessible disconnect device incorporated in the fixed wiring.
After the unit has been operating for some time, the metal near the rear of the unit may be hot
enough to cause injury. Let the unit cool before handling.
These operating instructions form an integral part of the equipment and must be available to the
operating personnel at all times. All the safety instructions and advice notes are to be followed.
Neither Power Ten nor any of the subsidiary sales organizations can accept responsibility for
personal, material or consequential injury, loss or damage that results from improper use of the
equipment and accessories.

M520086-01 iii
SERVICE SAFETY NOTICES
WARNING!
HAZARDOUS VOLTAGES IN EXCESS OF 480 V
RMS, 700 V PEAK MAY BE PRESENT WHEN
COVERS ARE REMOVED. QUALIFIED
PERSONNEL MUST USE EXTREME CAUTION
WHEN SERVICING THIS EQUIPMENT. CIRCUIT
BOARDS, TEST POINTS, AND OUTPUT
VOLTAGES MAY BE FLOATING ABOVE
CHASSIS GROUND.
WARNING!
TO GUARD AGAINST RISK OF ELECTRICAL
SHOCK DURING OPEN COVER CHECKS, DO
NO TOUCH ANY PORTION OF THE
ELECTRICAL CIRCUITS. EVEN WHEN THE
POWER IS OFF, CAPACITORS CAN RETAIN AN
ELECTRICAL CHARGE. USE SAFETY
GLASSES DURING OPEN COVER CHECKS TO
AVOID PERSONAL INJURY BY ANY SUDDEN
FAILURE OF A COMPONENT.
WARNING!
SOME CIRCUITS ARE LIVE EVEN WITH THE
FRONT PANEL SWITCH TURNED OFF.
SERVICE, FUSE VERIFICATION, AND
CONNECTION OF WIRING TO THE CHASSIS
MUST BE ACCOMPLISHED AT LEAST FIVE
MINUTES AFTER POWER HAS BEEN REMOVED
VIA EXTERNAL MEANS; ALL CIRCUITS AND/OR
TERMINALS TO BE TOUCHED MUST BE
SAFETY GROUNDED TO THE CHASSIS.
WARNING!
QUALIFIED SERVICE PERSONNEL NEED TO
BE AWARE THAT SOME HEAT SINKS ARE NOT
AT GROUND, BUT AT HIGH POTENTIAL.

M520086-01 iv
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.

M520086-01 v
About This Manual
This manual has been written expressly for the Power Ten 3300 Series of power supplies.
SAFETY SYMBOLS
CAUTION Protective Conductor Terminal
Risk of Electrical Shock
CAUTION Alternating Current (AC)
Refer to Accompanying Documents

M520086-01 vi
TABLE OF CONTENTS
Chapter 1 DESCRIPTION OF EQUIPMENT____________________________________1-1
1.1 PURPOSE AND CAPABILITIES _______________________________________________1-1
1.2 TECHNICAL CHARACTERISTICS_____________________________________________1-1
Chapter 2 INSTALLATION __________________________________________________2-1
2.1 INSPECTION _______________________________________________________________2-1
2.2 INPUT/OUTPUT CONNECTORS ______________________________________________2-1
2.3 LOCATION AND MOUNTING ________________________________________________2-1
2.4 CHECKOUT AND PRELIMINARY ADJUSTMENTS ______ Error! Bookmark not defined.
Chapter 3 OPERATING INSTRUCTIONS ______________________________________3-4
3.1 CONTROLS AND INDICATORS_______________________________________________3-4
3.1.1 Local Operation ________________________________________________________________ 3-4
3.1.2 Remote Current Programming _____________________________________________________ 3-7
3.1.3 Remote Voltage Programming _____________________________________________________ 3-7
3.1.4 Remote Sensing ________________________________________________________________ 3-8
3.1.5 Remote Output On/Off Control_____________________________________________________ 3-8
3.1.6 Auto-Parallel Operation __________________________________________________________ 3-9
3.1.7 Auto-Series Operation ___________________________________________________________ 3-9
3.1.8 Auto-Tracking Operation _________________________________________________________ 3-9
3.1.9 Output overvoltage Protection ____________________________________________________ 3-10
Chapter 4 MAINTENANCE AND CALIBRATION _______________________________4-1
4-1. INTRODUCTION ___________________________________________________________4-1
4-2. PREVENTIVE MAINTENANCE _______________________________________________4-1
4-3. CALIBRATION AND ADJUSTMENTS _________________________________________4-3
4.1.1 Converter Assembly Calibration____________________________________________________ 4-3
4.1.2 Display Assembly_______________________________________________________________ 4-6

M520086-01 vii
LIST OF TABLES
TABLE 1-1 3300 SERIES TECHNICAL CHARACTERISTICS......................................................1-2
TABLE 1-2 3300 SERIES TECHNICAL CHARACTERISTICS......................................................1-4
TABLE 2-1 3300 SERIES INPUT/OUTPUT CONNECTORS........................................................2-2
TABLE 3-1 3300 SERIES CONTROLS AND INDICATORS..........................................................3-5
TABLE 3-2 BARRIER STRIP (TB1) DESIGNATIONS AND FUNCTIONS....................................3-6
TABLE 4-1 PREVENTIVE MAINTENANCE SCHEDULE..............................................................4-1
TABLE 4-2 INSPECTION AND CORRECTIVE ACTION...............................................................4-2
LIST OF FIGURES
FIGURE 3-1 3300 SERIES CONTROLS AND INDICATORS .......................................................3-4
FIGURE 3-2 NORMAL CONNECTION PATTERN......................................................................3-11
FIGURE 3-3 REMOTE RESISTANCE PROGRAMMING OF OUTPUT CURRENT ...................3-11
FIGURE 3-4 REMOTE VOLTAGE PROGRAMMING OF OUTPUT CURRENT .........................3-12
FIGURE 3-5 REMOTE RESISTANCE PROGRAMMING OF OUTPUT VOLTAGE....................3-12
FIGURE 3-6 REMOTE VOLTAGE PROGRAMMING OF OUTPUT VOLTAGE..........................3-13
FIGURE 3-7 REMOTE SENSING OPERATION.......................................................................... 3-13
FIGURE 3-8 REMOTE ON/OFF CONTROL BY CONTACT CLOSURE.....................................3-14
FIGURE 3-9 REMOTE ON/OFF OPERATION USING AC/DC VOLTAGE SOURCE.................3-14
FIGURE 3-10 AUTO-PARALLEL OPERATION...........................................................................3-15
FIGURE 3-11 AUTO-SERIES OPERATION................................................................................3-16
FIGURE 3-12 AUTO-TRACKING OPERATION..........................................................................3-17

M520086-01 1-1
Chapter 1
DESCRIPTION OF EQUIPMENT
1.1 PURPOSE AND CAPABILITIES
The Power Ten 3300 Series power supplies are general purpose power supplies designed
specifically for laboratory test and systems applications requiring variable DC sources with good
regulation and low output ripple characteristics. Models of the 3300 Series are constant
current/constant voltage supplies with an automatic crossover feature. They provide up to 1000
watts of DC power over a wide range of voltage and current levels.
1.2 TECHNICAL CHARACTERISTICS
The physical, electrical and environmental characteristics for the 3300 Series are listed in
Tables 1-1 and 1-2.

M520086-01 1-2
Table 1-1
3300 Series Technical Characteristics
PARAMETERS SPECIFICATIONS
PHYSICAL CHARACTERISTICS:
Width
Depth
Height
Weight
ELECTRICAL CHARACTERISTICS:
Input Power (Standard)
Voltage
Frequency
Phases
Regulation (Line or Load)
Voltage
Current
Noise and Ripple (RMS)
Transient Response
Stability
Remote Control/Monitor
Power Density
Power Factor
Total Harmonic
19.00 in.
18.50 in
1.75 in.
15 lb. max.
95 to 127 VAC, 190 to 253 VAC (Option)
47 to 63 Hz
Single, 2-wire plus gnd
0.1% of max. output voltage
0.1% of max. output current
30 mV max.
A 30% step load will recover to within 2%
of original value within 10 ms.
+
0.05% of set point per 8 hr. after warm-up
and at a fixed line, load and temperature.
On/Off control via contact closure,
6-120 VDC or 12-240 VAC.
2.5 Watts/cubic in.
.99 min. at full load
2.5% max.

M520086-01 1-3
Table 1-1
3300 Series Technical Characteristics - Continued
PARAMETERS SPECIFICATIONS
Remote Programming
Resistive:
Constant Voltage (0-100%)
Constant Current (0-100%)
Voltage:
Constant Voltage (0-100%)
Constant Current (0-100%)
Current:
Constant Voltage (0-100%)
Constant Current (0-100%)
Remote Sensing
ENVIRONMENTAL
CHARACTERISTICS:
Temperature Coefficient
Ambient Temperature
Operating
Storage
Cooling
0 - 5k ohms
0 - 5k ohms
0 - 5 VDC
0 - 100 mV
0 - 1 mA
0 - 1 mA
Terminals are provided to sense output
voltage at point of load. Maximum line drop
3% of rated voltage per line.
0.02%/°C of max. output voltage rating for
voltage set point.
0.03%/°C of max. output current rating for
current set point.
0 to 50°C
-40°to 75°C
Internal blowers

M520086-01 1-4
Table 1-2
3300 Series Technical Characteristics
MODEL NUMBER
OUTPUT DC
VOLTS
OUTPUT DC
AMPS
OUTPUT
RIPPLE (RMS)
7.575
7.5125
1060
10100
2030
2050
3020
3033
4015
4025
5020
6010
6016
8006
8012
10010
1208
1507
0-7.5
0-7.5
0-10
0-10
0-20
0-30
0-30
0-30
0-40
0-40
0-50
0-60
0-60
0-80
0-80
0-100
0-120
0-150
75
125
60
100
30
50
20
33
15
25
20
10
16
6
12
10
8
7
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
50 mV
50 mV
50 mV
50 mV
50 mV

M520086-01 2-1
Chapter 2
INSTALLATION
2.1 INSPECTION
Inspect the shipping carton for possible damage before unpacking the unit. Carefully unpack
the equipment. Save all packing materials until inspection is complete. Verify that all items
listed on the packing slips have been received. Visually inspect all exterior surfaces for broken
knobs, connectors or meters. Inspect for dented or damaged exterior surfaces. External
damage may be an indication of internal damage. If any damage is evident, immediately
contact the carrier that delivered the unit and submit a damage report. Failure to do so could
invalidate future claims.
2.2 INPUT/OUTPUT CONNECTORS
Table 2-1 lists all external connections for the 3300 Series models.
For permanently connected equipment, a readily accessible disconnect device shall be incorporated in
the fixed wiring. For pluggable equipment, the socket outlet shall be installed near the equipment and
shall be easily accessible.
2.3 LOCATION AND MOUNTING
The 3300 Series models are intended for mounting in a standard 19.0-inch equipment rack.
Four captive screws, two on each side of the front panel, are used to secure the unit in place.
Optional slide mounting is available.
NOTICE
The unit should be provided with
proper ventilation. The top, rear and
both sides of the unit should be free
of obstructions.
Follow the instructions in paragraph 3.1.1 for setup and operation of the equipment.

M520086-01 2-2
Table 2-1
Output Connection Descriptions
SUPPLY TYPE CONNECTION DESCRIPTION
Output <=60V
Output >=80V
Bus Bar with hole for 1/4” bolt
Terminal Block with 6-32 screws
Table 2-2
Input Connection Descriptions
SUPPLY TYPE CONNECTION DESCRIPTION
3300, 3300I
Terminal Block with 6-32 screws
Table 2-3
3300 Series Input/Output Connectors
CONNECTOR FUNCTION CONNECTS TO
TB2 - AC
TB2 - AC
CHASSIS - GND
Pos. Bus Bar
Neg. Bus Bar
GND Stud
TB1
Prime Power Input (Std)*
Prime Power Input (Std)*
Output Power
Output Power
Control Interface
95 to 127 VAC
47 to 63 Hz
Power Source
User load(s)
User Load(s)
See Table 3-2 for a
description
*190 to 253 VAC is available as a factory option

M520086-01 2-2
2.4 WIRE SIZING
Care must be taken to properly size all conductors for the input and output of the power supply.
Table 2-5 below gives minimum recommended wire size for the input. This table is derived
from the National Electrical Code and is for reference only. Local laws and conditions may
have different requirements. The table is for copper wire only.
Table 2-4
Minimum Wire SizeTable
2.5 OUTLINE DRAWINGS
The following page (figure 2-1) shows the outlines and overall dimensions for 3300 product line.
SIZE 60 °C 75 °C 85 °C 90 °C
TYPES TYPES TYPES TYPES
AWG
MCM
RUW, T, TW,
UF FEPW, RH, RHW, RUH,
THW, THWN,
XHHW, USE,
ZW
V, MI TA, TBS, SA,
AVB, SIS, FEP,
FEPB, RHH,
THHN, XHHW
14 20 20 25 25
12 25 25 30 30
10 30 35 40 40
840505555
655657075
470859595
3 85 100 110 110
2 95 115 125 130
1 110 130 145 150
0 125 150 165 170
TEMPERATURE RATING OF COPPER CONDUCTOR
CURRENT RATING

M520086-01 2-3
Figure 2-1
Outline Drawing, 3300 Series
19.00
1.75
0.125
18.15
16.75 1.00
POS
NEG
TB1 TB2
Ø0.25 2 PL

M520086-01 3-4
Chapter 3
OPERATING INSTRUCTIONS
3.1 CONTROLS AND INDICATORS
Front panel controls and indicators for the 3300 Series are identified in Figure 3-1 with index
numbers keyed to Table 3-1. Table 3-1 provides a description of all operator controls and
indicators.
3.1.1 Local Operation
Units are shipped from the factory configured for local voltage/current control and local voltage
sensing. This configuration is used for applications where the IR drop of the load wires is
insufficient to degrade performance at the load. Prior to turning the unit on, rotate the voltage
and current potentiometers fully counterclockwise (minimum output). Then switch the power to
the ON position and adjust the voltage and current to the desired output.
Figure 3-1
3300 Series Controls and Indicators

M520086-01 3-5
Table 3-1
3300 Series Controls and Indicators
FIGURE &
INDEX NO.
CONTROL/INDICATOR
FUNCTION
3-1
1
2
3
4
5
6
7
8
9
10
Circuit Breaker
Power Switch
VOLTAGE Meter
Voltage Mode Indicator
Current Mode Indicator
CURRENT Meter
Overvoltage (OV) Indicator
Fault Indicator
Local Output Current Control
Local Output Voltage Control
Provides fault protection
Applies AC power to the power
supply.
Measures voltage output.
Indicates the power supply is operating
in the voltage mode.
Indicates the power supply is operating
in the current mode
Measures current output.
Indicates output voltage has exceeded
preset level, and power supply output
is turned off.
Adjusts overvoltage trip level.
Adjusts current output to a desired
level.
Adjusts voltage output to a desired
level.

M520086-01 3-6
Table 3-2
Barrier Strip (TB1) Designations and Functions
TB1
DESIGNATOR
SCHEMATIC
SYMBOL
FUNCTIONAL
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V+
VS+
VPROG
VCONT
VSET
VS-
V-
IPROG
ICONT
ISET
IMON
IMON+
ON/OFF
CONTACT RTN
ON/OFF
CNTCT CTRL
Positive output voltage for local voltage sensing.
Positive voltage sensing terminal.*
1 milliamp current source for either local or remote
voltage programming using resistance.
Voltage control input terminal.
Front panel voltage control potentiometers for local
control.
.
Negative voltage sensing terminal.*
Negative output voltage for local voltage sensing.
1 milliamp current source for either local or remote current
programming using resistance.
Current control input terminal.
Front panel current control potentiometers for local
control.
Negative current monitor terminal. Return for remote
current programming resistor.
0-5 VDC = 0-100% rated current. Use positive current
monitor terminal or 0-1 milliamp auto-tracking control
output terminal. Referenced to TB1-13.
Control Circuit Common. Used with TB1-12 for current
monitor and/or TB1-14 for remote on/off control return.
Remote on/off control using contacts of switch or relay.
*Except in models in excess of 60 VDC output.

M520086-01 3-7
Table 3-2
Barrier Strip (TB1) Designations and functions - Continued
TB1
DESIGNATOR
SCHEMATIC
SYMBOL
FUNCTIONAL
DESCRIPTION
15
16
ON/OFF
AC/DC RTN
ON/OFF
AC/DC
Return for AC/DC voltage source used for remote on/off
control.
Externally supplied AC/DC voltage source for on/off
output voltage control. This is a positive (+) terminal for
DC voltage.
3.1.2 Remote Current Programming
The remote current programming is used for applications that require the output current be
programmed (controlled) from a remote source. An external resistance or external voltage
source may be used as a programming device. When using remote current programming,
a shielded, twisted-pair, hookup wire is recommended to prevent noise interference with
programming signals.
a. External Current Programming Using Resistance. The resistance coefficient
for remote current programming is 100 ohms = 100% rated output. The
programming current from the current control programming terminal A3 is
factory set for 1 milliamp. If multiple switches or relays are used to program
different levels, make-before-break contacts are recommended. See Figure 3-
3 for connection requirements.
b. External Current Programming Using a Voltage Source. The voltage
coefficient for remote current programming is 1 millivolt per percent of rated
output current or 100 millivolts = 100% of rated output. On models with 10 V
programming, the programming coefficient is 0.1 volt per percent of rated
output or 10 volts = 100%. See Figure 3-4 for connection requirements.
3.1.3 Remote Voltage Programming
The remote voltage programming configuration is used for applications that require the
output voltage be programmed (controlled) from a remote source. An external resistance or
external floating voltage source may be used as a programming device. When using
remote voltage programming, a shielded, twisted-pair, hookup wire is recommended to
prevent noise interference with programming signals.
a. External Voltage Programming Using Resistance. The resistance coefficient
for remote voltage programming is 5k ohms = 100% of rated output voltage.
The programming current from terminal 3 is factory set to 1 mA. If multiple
switches or relays are used to program different levels, make-before-break
contacts are recommended. See Figure 3-5 for connection requirements.
b. External Voltage Programming The voltage coefficient for external voltage
programming is 5 volts = 100% of rated output voltage. On models with 10 V

M520086-01 3-8
programming, the programming coefficient is 0.1 volt per percent of rated
output or 10 volts = 100%. See Figure 3-6 for connection requirements.
3.1.4 Remote Sensing
In applications where the load is located some distance from the power supply, or the
voltage drop of the power output leads significantly interferes with load regulation, remote
voltage sensing may be used. When remote sensing is used, voltage is regulated at the
load versus the power supply output terminals. To connect the power supply for remote
voltage sensing (see Figure 3-7 for connection requirements), perform the following
procedure.
CAUTION
If the power supply is operated with load power
lines disconnected and sensing line connected,
internal power supply damage may occur. (Output
current then flows through sensing terminals.)
a. Remove jumper between the positive sense terminal (TB1-2) and the positive
output monitor terminal (TB1-1).
b. Remove jumper between the negative sense terminal (TB1-6) and the negative
output monitor terminal (TB1-7).
c. Connect sensing leads from the load positive to TB1-2 and the load negative to
TB1-6. A shielded, twisted pair is recommended to avoid potential noise
interference.
3.1.5 Remote Output On/Off Control
Remote on/off control may be accomplished by contact closure or by an isolated external
AC/DC voltage source.
a. Remote on/off by contact closure. Output is on when contacts are closed.
See Figure 3-8 for connection requirements.
b. Remote on/off control may be accomplished by an external 12 to 240 VAC or 6
to 120 VDC source. Application of AC/DC voltage will turn on the power
supply. See Figure 3-9 for connection requirements.