Startup and operation
a) Connection and startup procedure
• Place the laboratory power supply on a stable, even surface.
• The on/off switch (8) should be turned to “OFF”.
• Connect the mains plug of the included mains cable to the mains socket (14) on the back of the device and the power plug
to a power outlet with 230 V/AC, 50 Hz alternating current.
• Turn on the laboratory power supply by pushing the on/off switch (8) to “ON”.
• Both LED displays (1 and 2) light up and show the currently set current and voltage values.
• Depending on the setting of the control dial “CURRENT” (9) for output current limit, either the LED display “CV” (10) for
output voltage regulation or the LED display “CC” (11) for output current regulation will light up.
• The laboratory power supply is now ready to set the output voltage and current limit.
b) Setting the output voltage
In order for the correct output voltage to be set, the laboratory power supply’s output must be operated in a voltage-controlled
state.
• Turn the control dial “CURRENT” (9) for output current limit from the left position clockwise until the red LED display “CC” (11) for
output current regulation goes out and the green LED display “CV” (10) for output voltage regulation lights up.
• Check the control dial “FINE” (4) for exact voltage adjustment. It should be at the middle position.
• Then, use the control dial “COARSE” (3) to roughly set the desired output voltage. The currently set voltage can be viewed
on the LED display “V” (2). Turn the dial clockwise to increase, counter-clockwise to decrease voltage.
• Then use the control dial “FINE” (4) to exactly set the output voltage.
If you have to turn the control dial “FINE” (4) until it stops, return it to the middle position and adjust the setting
with the control dial “COARSE” (3) before making final exact adjustments.
c) Setting the current limit
Read the section “d) Connecting units” before undertaking adjustments for the current limit. For an exact current
limit setting, a unit must be connected and turned on, and the laboratory power supply must also be turned on.
The limited current value can be viewed on the LED display “A” (1) only during use.
First, use the control dials “COARSE” (3) and “FINE” (4) to set the permissible operating voltage of the unit to be
connected (see section “b) Setting the output voltage”).
• With the control dial “CURRENT” (9) for output current limit, approximately set the required amperage.
• Turn the dial clockwise to increase, counter-clockwise to decrease amperage.
When both control dials for voltage adjustment (3 and 4) are all the way to the left, the voltage display shows
“00.0” volts.
If you then turn the control dial “CURRENT” (9) for output current limit all the way to the left, the laboratory power
supply switches to current-controlled mode and the voltage display shows a minimum value. This is due to the
electrical structure of the laboratory power supply and is not a sign of malfunction.
d) Connecting units
First, verify that the total output of all units together does not exceed the laboratory power supply’s maximum capacity.
• Turn off all units when connecting them to the laboratory power supply. Otherwise, sparks may occur, and the sockets and
plugs may be damaged.
• Turn off the laboratory power supply.
• Connect the unit’s plus terminal (+) to the laboratory power supply’s plus socket (5) and the minus terminal (-) to the power
supply’s minus socket (7). Use cables of appropriate dimensions with 4 mm banana plugs or use standardized lab cables.
• Ground the units using the laboratory power supply’s provided ground connection (6).
• Turn on the laboratory power supply and the unit.
Once voltage is applied to the output sockets and the unit has been turned on, the current values for the current limit
and voltage are shown on the LED displays (1 and 2).
Depending on the laboratory power supply’s operation mode (current- or voltage-controlled), the LED display
“CC” (11) for output current regulation or “CV” (10) for output voltage regulation lights up.
• If necessary, you can also readjust the values for the current limit or output voltage for activated output sockets.
• Turn off the unit and the laboratory power supply before disconnecting a unit.
Caution!
The laboratory power supply has a protective circuit that limits the current in the even of a short circuit. To prevent
the laboratory power supply from overheating, always turn it off immediately and disconnect all connected units
in the event of a short circuit. Allow the laboratory power supply to cool down and make sure that it is well
ventilated. The air vents (12) must be clean and free of dust, do not cover the housing openings.
The laboratory power supply‘s maximum continuous operating time is 8 hours. After this period, turn off the
device and let it cool down to room temperature.
Maintenance and cleaning
a) General care
• Never use aggressive or abrasive cleaning agents, rubbing alcohol or other chemical solvents, as those can damage the
housing or even affect the operation of the product.
• The product does not require any maintenance, do not disassemble it.
• Disconnect the product from the household power outlet and any connected devices before cleaning.
• To clean the product, a dry, soft and clean cloth is sufficient. Do not apply too much pressure to the housing to prevent
scratching. You can easily remove dust using a long-haired, soft and clean brush.
b) Changing the fuse
Caution!
First, turn off the laboratory power supply and disconnect all cables. Then unplug the device.
• Use a slotted screwdriver to slightly push in the fuse holder (13) on the back and open the bayonet connector by turning it
counter-clockwise a quarter turn. A spring will automatically push out the fuse holder.
• Replace the defective fuse with a new one of the same type and same nominal rating (see “Technical data”).
• Replace the fuse holder, push it in slightly and use the screwdriver to fasten it in place. Check to see if the laboratory power
supply works properly.
Troubleshooting
The laboratory power supply does not function, the displays do not light up.
• Check the power switch.
• Check whether the mains plug is correctly connected to the mains socket (14) on the back of the device.
• Check the functionality of the power supply line (outlets, fuses, circuit breakers, etc.).
• Check whether the correct mains voltage is present.
The connected units do not function.
• Check the polarity of the connection sockets (5 and 7).
• Check whether a current limit is activated.
• Reduce the charge to the laboratory power supply from the connected units.
• Check the connected units’ technical data.
Disposal
Electronic devices are recyclable waste and must not be disposed of in the household waste.
At the end of its service life, dispose of the product according to the relevant statutory regulations.
You thus fulfil your statutory obligations and contribute to the protection of the environment.
Technical data
a) General
Operating voltage .......................................................................... 230 V/AC (±10 %)
Frequency ...................................................................................... 50 Hz (±2 Hz)
Adjustable output voltage .............................................................. 0 – 15 V/DC
Adjustable output current ............................................................... 0 – 5 A
Power consumption ....................................................................... max. 165 W
Continuous operation .................................................................... max. 8 h
Fuse ............................................................................................... 1.6 A , 250 V (T1.6AL250V)
Protection class ............................................................................. I
Mains cable length ......................................................................... 1.8 m
Display ........................................................................................... 3 digits, green LED (voltage) and red LED (current)
Operating temperature / humidity .................................................. 0 to +40 ºC, <90 % RH
Storage temperature / humidity ..................................................... -10 to +70 ºC, <70 % RH
Dimensions (W × H × D) ................................................................ 112 × 165 × 265 mm
Weight ........................................................................................... 3.4 kg
b) Output voltage
Idle state ........................................................................................ ≤0.01 % + 1 mV
Stability at 10 – 100 % load ........................................................... ≤0.2 % + 2 mV
Ripple (5 Hz – 1 MHz) ................................................................... ≤0.5 mVrms / ≤20 mVss
c) Output current
Idle state ........................................................................................ ≤0.01 % + 2 mA
Stability at 10 – 100 % load ........................................................... ≤0.2 % + 6 mA
Ripple (5 Hz – 1 MHz) ................................................................... ≤3 mArms / ≤30 mAss
d) Display accuracy
Voltage........................................................................................... ±1 % + 2 digits
Current ........................................................................................... ±2 % + 2 digits
This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in electronic data
processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited. This publication represent the
technical status at the time of printing.
© Copyright 2016 by Conrad Electronic SE.
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