Xantrex XPH 75-2D User Manual [En, de, fr, it, es]

XPH Series Dual
75V 2A DC
Power Supply

XPH 75-2D

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

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

July 2004 - Revision 2

Part Number

975-0102-01-02

Contact Information

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

1-360-925-5097 (direct)

Fax: [phone]

Email: [e-mail]

Web: www.xantrex.com

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Table of Contents

Introduction 3
Specification 3
Safety 5
EMC 6
Installation 7
Connections 7
Operation 7
Maintenance 9
Calibration 10
Instructions en Francais
Sécurité
Installation 11
Connexions 11
Fonctionnement 11
Maintenance 13

Bedienungsanleitung auf Deutsch

Sicherheit 14
Installation 15
Anschlüsse 15
Betrieb 15
Wartung 17

Istruzioni in Italiano

Sicurezza 18
Installazione 19

2

Collegamenti 19
Funzionamento 19
Manutenzione 21

Instrucciones en Español

Seguridad 22
Instalación 23
Conexiones 23
Operación 23
Mantenimiento 25

Warranty Information 26

Introduction

The XPH 75-2D is a dual output 300 watt PSU with multi-mode capability in a compact and
attractive case.

The multi-mode capability enables it to operate as a dual power supply with two independent and
isolated outputs, or as a single power supply of double the power. As a dual, each output
provides 0 to 75V at 0 to 2A (Mode A). As a single the output can be selected as either 0 to 75V
at 0 to 4A (Mode B) or 0 to 150V at 0 to 2A (Mode C). In single modes, the unused half of the unit
becomes completely inoperative and its displays are blanked.

Because of the higher voltages it can produce, the XPH 75-2D uses special safety binding posts
which can accept spade terminals, 4mm plugs, or bare-end wires without exposing any metal
parts.

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

Excellent line and load regulation are matched by low noise and good transient response. High
power efficiency ensures that the unit remains cool without any fan noise.

The XPH 75-2D has been designed to meet the stringent requirements of relevant IEC standards
for safety and EMC, including harmonics emissions. All outputs are intrinsically short circuit proof,
and are protected against external voltages and reverse currents.

OUTPUTS

Voltage Range: 0V to 75V minimum, Modes A and B.

Current Range: 0A to 2A minimum, Modes A and C.

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 safety terminals on 19mm (0.75”) pitch.
Output Impedance:

Output Protection: Output will withstand forward voltage of up to 85V (Modes A and B)

Specification

0V to 150V minimum, Mode C.

0A to 4A minimum, Mode B.

Typically <5mΩ in constant voltage mode.
Typically >50kΩ in constant current mode.

or 170V (Mode C).
Reverse protection by diode clamp for reverse currents up to 3A.

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

change; <0.1% load regulation for Mode C (150V/2A).

Ripple & Noise
(20MHz bandwidth):

Transient Response: <200µs to within 50mV of set level for 90% load change (Mode A).
Temperature Coefficient: Typically <100ppm/°C
Status Indication: Output on lamp. Constant current mode lamp.

3

Typically <2mVrms, <15mV pk-pk, constant voltage mode.

OPERATING MODES

Mode Selection: By front panel rotary switch.
Mode A: Independent outputs each capable of 0-75V at 0-2A.
Mode B:

Mode C: Output 2 only active, 0-150V at 0-2A.

METER SPECIFICATIONS

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,

Operating Modes: Output 1 meters are blanked in Modes B and C.

GENERAL

AC Input: 110V-240V AC ±10%, 50/60Hz. Installation Category II.
Power Consumption: 500VA max.
Operating Range: +5ºC to +40ºC, 20% to 80% RH.
Storage Range:
Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 2.

Output 2 only active, 0-75V at 0-4A.
Output 1 disabled.

Output 1 disabled.

Current 0.6% of reading ± 1 digit

−40ºC to + 70ºC.

Safety: Complies with EN61010-1.
EMC: Complies with EN61326.
Size: 260 x 160 x 320mm (WxHxD).
Weight: 4.3kg

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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 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.

mains supply OFF.

l

5

mains supply ON.

alternating current (ac)
direct current (dc)

CAUTION – refer to accompanying documentation;
incorrect operation may damage the power supply.

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.

EMC

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),

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

Performance B.

connections <3m not tested), Performance A.

6

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.

Mains Operating Voltage

This instrument has a universal input range and will operate from a nominal 115V or 230V mains
supply without adjustment. Check that the local supply meets the AC Input requirement given in
the Specification.

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

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.

Installation

WARNING! THIS INSTRUMENT MUST BE EARTHED.

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

OUTPUT. Connect to one or both outputs as appropriate for the selected Mode, see Operation
section.

The terminal marked

The operation of both outputs is identical in Mode A (independent mode); the following description
applies to both. In Mode B and Mode C only Output 2 is active and Output 1 is disabled; the
description therefore only applies to Output 2, see Mode Selection section.

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
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

Connections

is connected to the chassis and safety earth ground.

Operation

The output voltage is adjusted using the coarse and fine VOLTAGE controls; the CURRENT
control sets the maximum current that can be supplied.

7

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.

Mode Selection

The three operating modes are selected by the front panel rotary switch situated between the
terminals.

Caution. Turn both outputs off before changing mode. Possible damage to the circuit being
powered, and to the unit itself, may occur if the mode is switched with either output still on.

Mode A: With the switch in this position the outputs operate independently and are isolated

from one another. The voltage range on each output is 0-75V and the current range 0-2A.

Mode B: With the switch in this position only Output 2 is active; the voltage range is 0-75V and

the current range is 0-4A. The controls of Output 1 are inoperative and the display is blanked.
The terminals of Output 1 are isolated from those of Output 2.

Note that with the output switch of Output 1 in the ‘ON’ position the Output lamp still lights but
the terminals remain open-circuit.

Note also that the range and scaling of the current limit control doubles when changing from
Mode A to Mode B, i.e. with the control set for a 1.5A limit in Mode A, the limit becomes 3A in
Mode B. To avoid possible damage to the circuit being tested the outputs should be switched off
before the mode is changed and the current limit set to the desired value before the output is
switched on.

Mode C: With the switch in this position only Output 2 is active; the voltage range is 0-150V
and the current range is 0-2A. The controls of Output 1 are inoperative and the display is
blanked. The red terminal of Output 1 is isolated but the black terminal remains connected
internally to the black terminal of Output 2.

Note that when the output switch of Output 1 is in the ‘ON’ position the Output lamp still lights
but the red terminal remains open-circuit.

Note also that the range and scaling of the voltage controls of Output 2 double when changing
from Mode B to Mode C, i.e. with the controls set for 60V in Mode B the output voltage becomes
120V in Mode C. Care should therefore be taken to ensure that the outputs are switched off
before the mode is changed and that the output is set to the correct voltage before it is switched
on.

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 externally applied forward voltages of up to 85V (Modes A and B)
or 170V (Mode C).

8

Connection to the Load

The load should be connected to the positive (red) and negative (black) output terminals. To
provide protection from the high voltages that the unit can supply, the special terminals will accept
4mm plugs, bare-ended wires or spade terminals without exposing any metal parts.

WARNING! Switch the output off before making connections to the terminals. Always check that
there are no exposed connecting wires before switching the output on. Both terminals are fully
floating and either can be connected to 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 (
maximum permissible voltage between either terminal of one output and any terminal of another
output on the same supply is also 300VDC.

WARNING! All connections to the terminals must be made with the output 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 is very efficient but nevertheless 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.

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.

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.

) is 300VDC; the

Maintenance

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

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