Pro's Kit TE-5305B User manual

TE-5305B DC Power Supply
( DC 0~30V、0~5A)
User’s Manual
1
st
Edition
,
2015
©2015 Copyright by Prokit’s Industries Co., Ltd.

1
Introduction：
The DC power supply with fine adjustable output voltage is provided with
overload and short circuit protection.
There are 3 digits green LED displays for Voltage and Ampere for indicating
the output with high accuracy. The unit features in small size, good
performance, novel appearance and etc, they are the ideal power supplies
for science investigation, college, factory, electronic appliance maintenance
etc.
Safety Precautions：
To ensure safe operation of the equipment and eliminate the danger of
serious injury due to short circuits (arcing), the following safety precautions
must be observed.
Damages resulting from failure to observe these safety precautions are
exempt from any legal claims whatever.
•Prior to connection of the equipment to the mains outlet, check that the
available mains voltage corresponds to the voltage setting of the
equipment.
•Connect the mains plug of the equipment only to a mains outlet with
earth connection.
•Do not place the equipment on damp or wet surfaces.
•Do not subject the equipment to direct sunlight or extreme temperatures.
•Do not subject the equipment to extreme humidity or dampness.
•Replace a defective fuse only with a fuse of the original rating. Never
short circuit fuse or fuse housing.
•Do not exceed the maximum permissible input rating.

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•Conduct measuring works only in dry clothing and in rubber shoes, on
isolating mats.
•Comply with the warning labels and other info on the equipment.
•Do not cover the ventilation slots of the cabinet to ensure that air is able
to circulate freely inside.
•Do not insert metal objects into the equipment by way of the ventilation
slots.
•Do not place water-filled containers on the equipment. (danger of short-
circuit in case of knock over of the container)
•Do not operate the equipment near strong magnetic fields. (motors,
transformer etc.)
•Do not subject the equipment to shocks or strong vibrations.
•Keep hot soldering iron or guns away from the equipment.
•Allow the equipment to stabilize at room temperature before taking up
measurement. (important for exact measurements)
•Do not modify the equipment in any way.
•Do not place the equipment face-down on any table or work bench to
prevent damaging the controls at the front.
•Do not operate the meter before the cabinet has been closed and
screwed safely as terminal can carry voltage.
•The measurement instrument is not to be to operate unattended.
•Periodically wipe the cabinet with a damp cloth and mid detergent. Do
not use abrasives or solvents.
•The meter is suitable for indoor use only.
•Do not store the meter in a place of explosive, inflammable substance.

3
•Opening the equipment and any service- and repair work must be
performed by qualified service personal.
•Power Supplies do not belong to children hands.
Cleaning the cabinet：
Prior to cleaning the cabinet, withdraw the mains plug from the power outlet.
Clean only with a damp, soft cloth and a commercially available mild
household cleaner. Ensure that no water gets inside the equipment to prevent
possible shorts and damage to the equipment.
Features：
Unique Protective Design
•Circuit overload protection.
•Short circuit protection.
•Reverse polarity protection.
High quality SMD process
•PCB construction by SMD adhesive sheet element technology, High
reliability.
Two level of control for current & voltage
•Features variable output voltage 0-30V and current 0-5A.
•Fine and Coarse adjustment of regulated current and voltage value for
ease of use.
Automatic temperature & radiation system control
•Auto cooling fan turns on when temperature reaches 50ºC (115ºF).

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Durable and Convenient
•All metal construction & compact, features elegant appearance
and power saving. •Built-in handle for convenient carrying.
1. Technical Data：
Input voltage：220V AC ±10%, 50/60 Hz
Fuse：250V 3.15A, Φ5.0×30 mm
Power：150W
Mode：Linear mode, single channel
Display：2 sets 3 digits green LED
Display error of voltage：±0.2%＋2 digits
Display error of current：±1.0%＋2 digits
Output voltage：0-30V DC
Output current：0-5 A DC
Line regulation：≤0.01%＋3 mV；≤0.2%＋3 mA
Load regulation：≤0.01%＋5 mV；≤0.2%＋3 mA
Ripple and noise：≤1.0 mV (rms)；3.0 mA (rms)
Dimension：280×136×160 mm
Weight：5.3 kg
Operational Temperature：0 ~ ＋40 ℃，＜90%RH
Storing Temperature：－10 ~ ＋40 ℃，＜90%RH
Accessories：Power cord, operation manual

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2.1. Controls and description：
1、Voltage display：Indicating output voltage.
2、Ampere display：Indicating output current.
3、Current fine-adjustment：Fine-adjusting output current and the
current limit point setter.
4、Current coarse-adjustment ：Coarse-adjusting output current
and the current limit point setter.
5、Voltage fine-adjustment：Fine-adjusting output voltage
6、Voltage coarse-adjustment：Coarse-adjusting output voltage.
7、Constant-current indicator：The LED lights up when the units
are in current regulated state.
8、Constant-voltage indicator：The LED lights up when the units
are in voltage regulated state.
9、Power switch
10、Output terminal (－)：Connecting the negative terminal of load.
11、The grounding line of the case.
12、Output terminal (＋)：Connecting the positive terminal of load.

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2.2. Operation：
1、Adjust control knobs (3.) and (4.) clockwise to maximum position
before power supply is powered on, once switch on the power
supply, and adjust knobs (5.) and (6.) to preferred voltage values;
firstly to adjust (6.), the coarse tuning knob, to the requested value,
and adjust(5.), the fine tuning knob up to precise value.
2、Connect the equipment under test to the power supply, (12.) is
connected to the positive polarity input of the equipment and(10.)
is connected to the negative polarity input of the equipment. After
powered on, (2.) displayed current output value, (1.) displayed
voltage output value. If overload, the (7) LED lighted up and (2)
displayed over rated value, and then, reset the equipment will be
needed.
3、Switch on the power supply, at the same time turning knobs (5.)
and (6.) clockwise to maximum value, knobs (3.) and (4.) counter
clockwise to minimum value, and then connected with equipment,
clockwise turning knobs (3.) and (4.) to the requested stable
current value.
4、Switch on the power supply and turning knobs (3.) and (4.) to the
maximum value, which can arbitrarilyset the current limit protection
point, the methodis as below; Switch on the power supply, with the
appropriate variable load and adjust the load resistance, so that
the output current is equal to the current limit protection point, and
then turning knob (3.) and (4.) respectively to let flow indicator as
critical state, then, the current limit protection was set up.
5、The LED display of power supply is 3-1/2, if need the more
precision value, it will be necessary to be calibrated by a precision
measuring instrument in the external circuit.

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6、
3. Caution：
1、The power supplies provide 1 adjustable outputfor a maximum DC
current 5 Ampere and maximum DC volt 30 voltage.
2、To extend the operational life span of the power supply, we
recommend you to limit the working time under full load to eight
hours.
3、When operating is finished, put it in a dry place of good ventilation,
and keep it clean. If it is not in use for a long period, pull off the
power supply plug for storage.
4、For maintenance, input voltage must be cut off.
4. MAINTENANCE
How to replace the fuse
Using an screwdriver to pried open the fuse holder from power socket
as following picture, replace the damaged fuse with spare fuse （
3.15A/250V）.

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©2015 Prokit’s Industries Co., LTD. All rights reserved 2015001