Xantrex XPH 42-10 User Manual [En, de, fr, it, es]

XPH Series
42V 10A DC
Power Supply

XPH 42-10

Operating Manual

www.programmablepower.com

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

XPH 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

August 2008 - Revision 3

Part Number

975-0105-01-03

Contact Information

Telephone: [phone] (toll free in North America)

1-858-450-0085 (direct)

Fax: [phone]

Email: [e-mail]

[e-mail]

Web: www.programmablepower.com

1

Introduction

The XPH 42-10 is an exceptionally compact and lightweight single output laboratory dc power
supply providing 0 to 42V at 0 to 10A.

The XPH 42-10 uses mixed−mode regulation technology which combines switch−mode
pre−regulation with linear post−regulation. Special techniques are used to maintain very high
efficiency whilst achieving noise levels that are close to that of a pure linear regulator.

Excellent line and load regulation are matched by low noise and good transient response. High
resolution controls allow accurate setting of voltage and current levels. Remote sense terminals
are provided so that good regulation can be maintained across remote loads at high currents.

The output operates in constant voltage or constant current mode with automatic cross-over and
mode indication. There is a DC output on−off switch.

The XPH 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 the output switch is
set to “off”, the current limit setting is displayed enabling conditions to be set before the load is
connected.

The XPH series has been designed to meet the stringent requirements of the latest 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

Safety 4

EMC 5

Installation 6

Connections 6

Operation 7

Maintenance 8

Calibration 9

Instructions en Francais 11

Bedienungsanleitung auf Deutsch 15

2

Istruzioni in Italiano 20

Instrucciones en Español 24

Warranty Information 28

OUTPUT

Voltage Range: 0V to 42V minimum
Current Range: 0A to 10A minimum
Output Voltage Setting: By coarse and fine controls.
Output 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: 4mm terminals on 19mm (0.75”) pitch.

Specification

Output Impedance:

Output Protection: Output will withstand up to 48V forward voltage.

Over-temperature
Protection:

Load & Line Regulation: <0.01% of maximum output for a 90% load change or 10% line

Ripple & Noise
(20MHz bandwidth):

Transient Response: <200µs 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

Meter Types: Dual 4 digit meters with 14mm (0.56") LEDs. Reading rate 4 Hz.
Meter Resolutions: 10mV, 10mA
Meter Accuracies: Voltage 0.3% of reading ± 2digit,

Typically <5mΩ in constant voltage mode.
Typically >20kΩ in constant current mode.

Reverse protection by diode clamp for reverse currents up to 3A.
The output will be tripped off if a fault causes the internal

temperature to rise excessively.

change.
Typically <2mVrms, <10mV pk-pk, constant voltage mode.

Current 0.6% of reading ± 2digit

GENERAL

AC Input: Factory set for: 110V - 120V AC ±10% or 220V - 240V AC ±10%,

50/60Hz. Installation Category II.
Power Consumption: 800VA max.
Operating Range: +5ºC to +40ºC, 20% to 80% RH.
Storage Range:
Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 2.
Safety:
EMC: Complies with EN61326.
Size: 140 x 160 x 320mm (WxHxD).
Weight: 3.6kg

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−40ºC to + 70ºC.

Complies with EN61010−1.

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° 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 10 minutes 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.

l

mains supply OFF.

mains supply ON.

4

alternating current (ac)

direct current (dc)

This instrument has been designed to meet the requirements of the EMC Directive 2004/108/EC.
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

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.

EMC

d) EN61000-4-4 (1995) Fast Transient, 1kV peak (AC line), 0.5kV peak (DC Outputs),

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

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:

Performance B.

connections <3m not tested), Performance B.

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

Mains Operating Voltage

Check that the instrument operating voltage marked on the rear panel is suitable for the local
supply.

Mains Lead

When a three core mains lead with bare ends is provided this should be connected as follows:

BROWN - MAINS LIVE

Installation

When fitting a fused plug a 5 amp fuse should be fitted inside the plug. 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 green­and-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.

Any interruption of the mains earth conductor inside or outside the instrument will make the
instrument dangerous. Intentional interruption is prohibited.

Ventilation

The power supply is cooled by a low-speed fan which vents at the rear. Take care not to restrict
the air inlets at the side panels or the exit at the rear.

BLUE - MAINS NEUTRAL
GREEN/YELLOW - EARTH Safety Earth Symbol

WARNING! THIS INSTRUMENT MUST BE EARTHED.

6

Connections

All connections are made from the front panel.
The load should be connected to the positive (red) and negative (black) terminals marked

OUTPUT.
Remote sense connections to the load, if required, are made from the positive (+) and

negative (−) SENSE terminals. Switch the LOCAL/REMOTE switch to REMOTE when remote
sensing is required. Switch back to LOCAL when remote sensing is not in use.

The terminal marked

is connected to the chassis and safety earth ground.

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.

Operation

When the
the actual voltage and the right-hand meter the actual load current.

output switch is switched on, the ON lamp lights; the left-hand meter now shows

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.

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.

Connection to the Load

The load should be connected to the positive (red) and negative (black) OUTPUT terminals. Both
are fully floating and either can be connected to ground.

Remote Sensing

The unit has a very low output impedance, but this is inevitably increased by the resistance of the
connecting leads. At high currents this can result in significant differences between the indicated
source voltage and the actual load voltage (two 20mΩ connecting leads will drop 0.2V at 5 Amps,
for instance). This problem can be minimised by using short, thick, connecting leads, but where
necessary it can be completely overcome by using the remote sense facility.

This requires the sense terminals to be connected to the output at the load instead of at the
source; insert wires into the spring-loaded SENSE terminals and connect directly to the load.
Switch the LOCAL/REMOTE switch to REMOTE. To avoid instability and transient response
problems, care must be taken to ensure good coupling between each output and sense lead. This
can be done either by twisting the leads together or by using coaxially screened cable (sense
through the inner). An electrolytic capacitor directly across the load connection point may also be
beneficial.

The voltage drop in each output lead must not exceed 0.5 Volts.
Switch the LOCAL/REMOTE switch back to LOCAL when remote sensing is not in use.

7

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 (
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.

Note that the output terminals are rated at 15A maximum; if several outputs are operated in
parallel to source higher currents than this the junction should be made at a separate point, not
one of the terminals.

Over-temperature Protection

Sensors on both the primary and secondary heatsinks will detect over-temperature due to
blocked air flow, fan failure or other circuit fault. Over-temperature will shut down the output (the
display will read 0 Volts and 0 Amps if the output is ON) though the output ON lamp will remain lit.
The output will remain shut down even after the heatsinks have cooled down. When the cause of
the over-temperature has been removed and the heatsinks have cooled to normal working
temperatures the output can be reset by turning the POWER switch off (

) is 300VDC.

) then on ( l ) again.

The Manufacturers or their agents overseas will provide repair for any unit developing a fault.
Where owner wish to undertake their own maintenance work, this should only be done by skilled
personnel in conjunction with the service manual which may be purchased directly from the
Manufacturers or their agents overseas.

Fuse

The correct fuse type is:

Note that the main function of the fuse is to make the instrument safe and limit damage in the
event of failure of one of the switching devices. If a fuse fails it is therefore very likely that the
replacement will also blow, because the supply has developed a fault; in such circumstances the
instrument will need to be returned to the manufacturer for service.

Make sure that only fuses of the required rated current and specified type are used for
replacement. The use of makeshift fuses and the short-circuiting of fuse-holders is prohibited.

To replace a fuse, first disconnect the instrument from the AC supply. Remove the 6 cover
securing screws and lift off the cover. Replace the fuse with one of the correct type and refit the
cover.

Cleaning

If the PSU requires cleaning use a cloth that is only lightly dampened with water or a mild
detergent. Polish the display window with a soft dry cloth.

Maintenance

10 Amp 250V HBC time-lag(T), 5 x 20mm.

8

WARNING! TO AVOID ELECTRIC SHOCK, OR DAMAGE TO THE PSU, NEVER ALLOW
WATER TO GET INSIDE THE CASE. TO AVOID DAMAGE TO THE CASE OR DISPLAY
WINDOW NEVER CLEAN WITH SOLVENTS.

Allow at least 5 minutes warm-up before commencing calibration.

Access to Calibration Adjustments

All adjustments are on the front panel control board; all the trimmers are adjusted from the
reverse side of the board through holes in the board. To gain access to the board it is necessary
to remove the top cover.

WARNING!

When the instrument is connected to its supply the removal of covers is likely to expose live parts.
The instrument should 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 5 minutes 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.

Remove the 6 side screws and the front handle screw to release the top cover.

Calibration

Control pcb calibration points (viewed from rear)

Equipment Required

A 5½ digit multimeter with better than 0.05% accuracy on dc volts and better than 0.1% accuracy
on dc current (to 10A); alternatively use a precision shunt for current measurement.

Rheostat or other high power load arrangement to provide up to 10A load at 42V. 1kΩ 1% 0.25W
resistor.

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