Xantrex XPL 18-3 User manual

XPL Series Linear
DC Power Supply
XPL 18-3
XPL 30-1
XPL 30-2
XPL 30-2D
XPL 30-2T
XPL 56-1
Operating Manual

About Xantrex
Xantrex Technology Inc. is a world-leading supplier of advanced power electronics and controls
with products from 50 watt mobile units to one MW utility-scale systems for wind, solar, batteries,
fuel cells, microturbines, and backup power applications in both grid-connected and stand-alone
systems. Xantrex products include inverters, battery chargers, programmable power supplies,
and variable speed drives that convert, supply, control, clean, and distribute electrical power.
Trademarks
XPL series is a trademark of Xantrex International. Xantrex is a registered trademark of Xantrex
International.
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
© Xantrex International. All rights reserved.
Disclaimer
UNLESS SPECIFICALLY AGREED TO IN WRITING, XANTREX TECHNOLOGY INC.
(“XANTREX”)
(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 LOSS OR DAMAGE, WHETHER
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.
Date and Revision
October 2007 - Revision 5
Part Number
975-0100-01-05
Contact Information
Telephone: [phone] (toll free in North America)
1-858-450-0085 (direct)
Fax: [phone]
Email: [email protected]
Web: www.xantrex.com
1

Introduction
The XPL series provides medium levels of power (up to 125 watts) in a compact and attractive
case style using linear regulation.
High resolution controls allow precise setting of voltage and current levels which are indicated on
accurate and highly legible digital meters.
Excellent line and load regulation is matched by very low noise and good transient response.
Improved power efficiency ensures that the units require no fan cooling.
The XPL 30-2D has two independent isolated outputs each with a 0 to 30V, 0 to 2A capability. The
outputs operate in constant voltage or constant current mode with automatic crossover and mode
indication. Each output has its own on-off switch. The outputs can be wired in either series or
parallel to provide voltages up to 60 volts or currents up to 4 amps. The XPL 30-2T has, in
addition, an Auxiliary ‘logic voltage’ output with a 2A current capability. This output can be preset
between 1.5 volts and 5 volts via a front panel control.
The XPL 18-3, XPL 30-1, XPL 30-2 and XPL 56-1 are single output supplies capable of supplying
up to 15V/5A, 18V/3.3A, 30V/1A, 30V/2A, 30V/3A or 56V/1.1A respectively.
The XPL series incorporates separate digital voltage and current meters on each output. The
meters use bright 14mm (0.56”) LED displays and have an update rate of 4 per second providing
near instantaneous response. Simultaneous metering of voltage and current provides accurate
information “at a glance” and avoids any possibility of misinterpretation. When an output switch is
set to “off”, the current limit setting is displayed enabling conditions to be set before the load is
connected. With the right-hand main output off the right-hand meters can be used to momentarily
display the preset Auxiliary voltage and current limit.
The XPL series has been designed to meet the stringent requirements of relevant IEC standards
for safety and EMC. All outputs are intrinsically short circuit proof, and are protected against
external voltages and reverse currents.
Table of Contents
Introduction 2
Specification 3
EMC 5
Safety 6
Installation 7
Operation - Main Outputs 8
Operation – Auxiliary Output 9
Operation - General 9
Calibration 10
Maintenance 11
Instructions en Francais 12
Bedienungsanleitung auf Deutsch 17
Istruzioni in Italiano 22
Instrucciones en Español 27
Warranty Information 32
2

Specification
MAIN OUTPUTS
Voltage Range: 0V to 18V minimum (XPL 18-3)
0V to 30V minimum (XPL 30-1, XPL 30-2, XPL 30-2D, XPL 30-2T)
0 to 56V minimum (XPL 56-1)
Current Range: 0A to 1A minimum (XPL 30-1)
0A to 1.1A minimum (XPL 56-1)
0A to 2A minimum (XPL 30-2, XPL 30-2D, XPL 30-2T)
0A to 3.3A minimum (XPL 18-3)
Voltage Setting: By coarse and fine controls.
Current Setting: By single logarithmic control.
Operating Mode: Constant voltage or constant current with automatic cross-over.
Output Switch: Electronic. Preset voltage and current displayed when off.
Output Terminals: Universal 4mm safety binding posts on 19mm (0.75”) pitch.
Output Impedance: Typically <5mΩin constant voltage mode.
Typically >50kΩin constant current mode.
Output Protection: Outputs will withstand forward voltages of up to 20V above the rated
output voltage. Reverse protection by diode clamp for currents up to 3A.
Load Regulation: <0.01% of maximum output for 90% load change.
Line Regulation: <0.01% of maximum output for 10% line change.
Ripple & Noise:
(20MHz bandwidth)
Typically <1mVrms (CV mode).
Transient Load Response: <20µs to within 50mV of set level for 90% load change.
Temperature Coefficient: Typically <100ppm/°C.
Status Indication: Output on lamp. Constant current mode lamp.
METER SPECIFICATIONS (Main Outputs)
Meter Types: Dual 3 digit meters with 14mm (0.56") LEDs. Reading rate 4 Hz.
Meter Resolutions: 100mV, 10mA.
Meter Accuracies: Voltage 0.3% of reading ± 1 digit.
Current 0.6% of reading ± 1 digit.
AUXILIARY LOGIC OUTPUT (XPL30-2T only)
Voltage: Variable <1.5V to >5V by front panel control.
Meter Voltage Accuracy: 0.3% ± 1 digit.
Current Limit: 2A minimum.
Output Protection: Output will withstand up to 7V forward voltage. Diode clamp reverse
protection for currents up to 3A.
Ripple & Noise
(20MHz bandwidth):
Typically <5mVrms, <15mVpk-pk (CV mode).
Load Regulation: <3% for 90% load change.
Line Regulation: <0.2% for 10% line voltage change.
Status Indication: UNREG lamp.
3

GENERAL
AC Input: 230V AC or 115VAC ± 10%, 50/60Hz. Installation Category II.
Power Consumption: XPL 30-1: 85VA max;
XPL 30-2/XPL 18-3/XPL 56-1: 160VA max;
XPL 30-2D/XPL 30-2T: 320VA max.
Operating Range: +5ºC to +40ºC, 20% to 80% RH.
Storage Range: −40ºC to + 70ºC.
Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 2.
Safety: Complies with EN61010-1.
EMC: Complies with EN61326.
Size: Singles: 140 x 160 x 295 mm (WxHxD).
Dual & Triple: 260 x 160 x 295 mm (WxHxD).
Weight: XPL 30-1: 3.1kg;
XPL 30-2/XPL 18-3/XPL 56-1: 4.1kg;
XPL 30-2D/XPL 30-2T: 7.4kg.
4

EMC
This instrument has been designed to meet the requirements of the EMC Directive 89/336/EEC.
Compliance was demonstrated by meeting the test limits of the following standards:
Emissions
EN61326 (1998) EMC product standard for Electrical Equipment for Measurement, Control and
Laboratory Use. Test limits used were:
a) Radiated: Class B
b) Conducted: Class B
c) Harmonics: EN61000-3-2 (2000) Class A; the instrument is Class A by product category.
Immunity
EN61326 (1998) EMC product standard for Electrical Equipment for Measurement, Control and
Laboratory Use.
Test methods, limits and performance achieved were:
a) EN61000-4-2 (1995) Electrostatic Discharge : 4kV air, 4kV contact, Performance A.
b) EN61000-4-3 (1997) Electromagnetic Field, 3V/m, 80% AM at 1kHz, Performance B.
c) EN61000-4-11 (1994) Voltage Interrupt, 1 cycle, 100%, Performance B.
d) EN61000-4-4 (1995) Fast Transient, 1kV peak (AC line), 0.5kV peak (DC Outputs),
Performance B.
e) EN61000-4-5 (1995) Surge, 0.5kV (line to line), 1kV (line to ground), Performance B.
f) EN61000-4-6 (1996) Conducted RF, 3V, 80% AM at 1kHz (AC line only; DC Output
connections <3m not tested), Performance A.
According to EN61326 the definitions of performance criteria are:
Performance criterion A: ‘During test normal performance within the specification limits.’
Performance criterion B: ‘During test, temporary degradation, or loss of function or
performance which is self-recovering’.
Performance criterion C: ‘During test, temporary degradation, or loss of function or
performance which requires operator intervention or system reset occurs.’
Where Performance B is stated it is because DC Output regulation may deviate beyond
Specification limits under the test conditions. However, the possible deviations are still small and
unlikely to be a problem in practice.
Note that if operation in a high RF field is unavoidable it is good practice to connect the PSU to
the target system using screened leads which have been passed (together) through an absorbing
ferrite sleeve fitted close to the PSU terminals.
Cautions
To ensure continued compliance with the EMC directive observe the following precautions:
a) after opening the case for any reason ensure that all signal and ground connections are
remade correctly and that case screws are correctly refitted and tightened.
b) In the event of part replacement becoming necessary, only use components of an identical
type, see the Service Manual.
5

Safety
This power supply is a Safety Class I instrument according to IEC classification and has been
designed to meet the requirements of EN61010-1 (Safety Requirements for Electrical Equipment
for Measurement, Control and Laboratory Use). It is an Installation Category II instrument
intended for operation from a normal single phase supply.
This instrument has been tested in accordance with EN61010-1 and has been supplied in a safe
condition. This instruction manual contains some information and warnings which have to be
followed by the user to ensure safe operation and to retain the instrument in a safe condition.
This instrument has been designed for indoor use in a Pollution Degree 2 environment in the
temperature range 5°C to 40°C, 20% - 80% RH (non-condensing). It may occasionally be
subjected to temperatures between +5°C and –10°C without degradation of its safety. Do not
operate while condensation is present.
Use of this instrument in a manner not specified by these instructions may impair the safety
protection provided. Do not operate the instrument outside its rated supply voltages or
environmental range.
WARNING! THIS INSTRUMENT MUST BE EARTHED
Any interruption of the mains earth conductor inside or outside the instrument will make the
instrument dangerous. Intentional interruption is prohibited. The protective action must not be
negated by the use of an extension cord without a protective conductor.
When the instrument is connected to its supply, terminals may be live and opening the covers or
removal of parts (except those to which access can be gained by hand) is likely to expose live
parts. The apparatus shall be disconnected from all voltage sources before it is opened for any
adjustment, replacement, maintenance or repair. Capacitors inside the power supply may still be
charged even if the power supply has been disconnected from all voltage sources but will be
safely discharged about 1 minute after switching off power.
Any adjustment, maintenance and repair of the opened instrument under voltage shall be avoided
as far as possible and, if inevitable, shall be carried out only by a skilled person who is aware of
the hazard involved.
If the instrument is clearly defective, has been subject to mechanical damage, excessive moisture
or chemical corrosion the safety protection may be impaired and the apparatus should be
withdrawn from use and returned for checking and repair.
Make sure that only fuses with the required rated current and of the specified type are used for
replacement. The use of makeshift fuses and the short-circuiting of fuse holders is prohibited.
Do not wet the instrument when cleaning it. The following symbols are used on the instrument
and in this manual:-
Earth (ground) terminal.
mains supply OFF.
l mains supply ON.
alternating current (ac)
direct current (dc)
6

Installation
Mains Operating Voltage
Check that the instrument operating voltage marked on the rear panel is suitable for the local
supply. Should it be necessary to change the operating voltage, proceed as follows:
1. Ensure that the instrument is disconnected from the AC supply.
2. Remove the screws holding the case upper and handle and lift off the case upper.
3. Change the transformer connections following the diagram below:
230V Operation 115V Operation
BLUE BROWN BLUE BROWN
4. Re-assemble in the reverse order.
5. To comply with safety standard requirements the operating voltage marked on the rear panel
must be changed to clearly show the new voltage setting.
Fuse
The AC fuse is located in the fuse drawer in the lower part of the IEC inlet connector. To change
the fuse remove the line cord and open the fuse drawer with a suitable tool.
The correct fuse type is 20 x 5mm 250V HBC time-lag with the following rating:
Model 230V 115V
30V/1A 800mA (T) 1.6A (T)
30V/2A; 18V/3.3A; 56V/1.1A 1.25A (T) 2.5A (T)
30V/3A; 15V/5A 1.6A (T) 3.15A (T)
Dual and Triple 2.5A (T) 4A (T)
Make sure that only fuses with the required current rating and of the specified type are used for
replacement. The use of makeshift fuses and the short-circuiting of fuseholders are prohibited.
Mains Lead
When a three core mains lead with bare ends is provided this should be connected as follows:
BROWN - MAINS LIVE
BLUE - MAINS NEUTRAL
GREEN/YELLOW - EARTH Safety Earth Symbol
As the colours of the wires in the mains lead of this apparatus may not correspond with the
coloured markings identifying the terminals in your plug proceed as follows:
The wire which is coloured green-and-yellow must be connected to the terminal in the plug which
is marked by the letter E or by the safety earth symbol shown above or coloured green or green-
and-yellow.
The wire which is coloured blue must be connected to the terminal which is marked with the letter
N or coloured black.
The wire which is coloured brown must be connected to the terminal which is marked with the
letter L or coloured red.
WARNING! THIS INSTRUMENT MUST BE EARTHED.
Any interruption of the mains earth conductor inside or outside the instrument will make the
instrument dangerous. Intentional interruption is prohibited.
7

Operation - Main Outputs
Setting Up the Output
With the POWER switch on (l) and the output OFF the output voltage and current limit can
be accurately preset using the VOLTAGE and CURRENT controls; the left-hand meter shows the
set voltage and the right-hand meter shows the set maximum current.
When the output switch is switched ON, the lamp lights; the left-hand meter now shows the
actual voltage and the right-hand meter the actual load current.
Constant Voltage
The output voltage is adjusted using the coarse and fine VOLTAGE controls; the CURRENT
control sets the maximum current that can be supplied.
Constant Current
If the load resistance is low enough such that, at the output voltage set, a current greater than the
current limit setting would flow, the power supply will automatically move into constant current
operation. The current output is adjusted by the CURRENT control and the VOLTAGE controls
set the maximum voltage that can be generated.
The CC lamp lights to show constant current mode.
Instantaneous Current Output
The current limit control can be set to limit the continuous output current to levels down to 10mA.
However, in common with all precision bench power supplies, a capacitor is connected across the
output to maintain stability and good transient response. This capacitor charges to the output
voltage and short-circuiting of the output will produce a current pulse as the capacitor discharges
which is independent of the current limit setting.
Efficiency
To improve efficiency at low output levels the overhead voltage to the output regulators is
automatically switched by a relay to a lower voltage; hysteresis at the threshold point prevents
unnecessary switching when the output voltage is set at about that level. Apart from an audible
‘click’ the user will be unaware that the relay has switched; there will be no disturbance on the
output. The higher power 15V/5A and 30V/3A models use electronic pre-regulation, instead of
relay control, to maintain a low overhead voltage.
Protection
The output has intrinsic short-circuit protection and is protected from reverse voltages by a diode;
the continuous reverse current must not exceed 3 Amps, although transients can be much higher.
In common with all series regulated single-ended power supplies, the unit is not capable of
sinking current provided from an external source.
If a voltage greater than the set output voltage of the unit is applied from an external source, the
internal regulator will turn off, no current will flow, and the voltage meter will read the applied
voltage. No damage will result providing the applied voltage does not exceed the maximum
output voltage of the power supply by more than 20 Volts. Application of a voltage greater than
this is prohibited.
8

Operation – Auxiliary Output
Output Voltage
The output voltage can be set between 1.5V and 5.0V using the front panel rotary adjustment
beside the centre terminals. With the right-hand main output OFF, pressing the SHOW AUX
PRESET button will display the AUX output voltage and current limit on the right-hand meters.
Current Limit
The output will go into current limit above 2A; the UNREG lamp lights in this condition.
Protection
The output has intrinsic short-circuit protection and is protected from reverse voltages by a diode;
the continuous reverse current must not exceed 3 Amps, although transients can be much higher.
The output is protected against external forward voltages up to 16 Volts.
Operation - General
Connections
All connections are made from the front panel.
The load should be connected to the positive (red) and negative (black) terminals marked
OUTPUT. Both are fully floating and either can be connected to ground.
The terminal marked is connected to the chassis and safety earth ground.
Series or Parallel Connection with Other Outputs
The outputs of the power supply are fully floating and may be used in series with other power
supply units to generate high DC voltages up to 300V DC.
The maximum permissible voltage between any terminal and earth ground ( ) is 300VDC; the
maximum permissible voltage between either terminal of one output and any terminal of another
output on the same supply is also 300VDC.
WARNING! Such voltages are exceedingly hazardous and great care should be taken to shield
the output terminals for such use. On no account should the output terminals be touched when
the unit is switched on under such use. All connections to the terminals must be made with the
power switched off on all units.
It should be noted that the unit can only source current and cannot sink it, thus units cannot be
series connected in anti-phase.
The unit can be connected in parallel with others to produce higher currents. Where several units
are connected in parallel, the output voltage will be equal to that of the unit with the highest output
voltage setting until the current drawn exceeds its current limit setting, upon which the output will
fall to that of the next highest setting, and so on. In constant current mode, units can be
connected in parallel to provide a current equal to the sum of the current limit settings.
Ventilation
The power supply can generate significant heat at full power. The supply relies on convection
cooling only and it is therefore important that ventilation is never restricted if performance and
safety are to be maintained.
9