Axio MET AX-3003D User manual

DC POWER SUPPLY
AX-3003D, AX-3005D,
AX-1803D
USERS MANUAL
V
C. V.
I NE COARSE
VOLTAGE
A
V
OFF
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VOLTAGE
CURRENT
DC POWER
SUPPLY
FIN
COARSE
FINE
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C. C.
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2
Table of Contents
1. Introduction ..................................................................................................... 3
Unpacking and Inspection ........................................................................................ 4
Safety Precautions ................................................................................................. 4
Safety Information ................................................................................................. 4
Safety Symbols ..................................................................................................... 4
Instrument Front Panel ...........................................................................................
Instrument Back Panel ............................................................................................ 6
2. Operation ........................................................................................................ 7
Line Power Supply Setting ........................................................................................ 8
Operation Procedure .............................................................................................. 8
3. Specifications .................................................................................................. 10
General Specifications ........................................................................................... 10
Technical Parameters ............................................................................................ 11
4. Maintenance .................................................................................................... 11
Replacing the Fuse ............................................................................................... 12

3
Chapter 1. I troductio
This manual contains information and warnings, which must be followed to ensure safe operation
and retain the DC power supply in safe condition.
WARNING
READ “SAFETY INFORMATION” BEFORE
USING,INSTALLING OR MAINTENANCE THE INSTRUMENT.
The DC power supply series are a bench top single output variable DC power supply.
Stable regulated DC power supplies allowing continuous adjustment of both the output voltage and
output current levels. They have been designed according to IEC1010–1 concerning safety
requirements and comply with.
There are three display types for the power supply series monitoring output voltage and current.
They are LCD, LED and two pointer meters. One of them is equipped to the DC power supply.
There are different numbers of output voltage and output current ranges for the DC power supply
series, too. These difference models of the DC power supply are available for choice of user.
The output voltage and current range and equipped display type of the DC power supply series as
follows: These difference models of the DC power supply are available for choice of user.
OUTPUT
VOLTAGE
(regulated)
OUTPUT CURRENT
(regulated)
DISPLAY TYPE
LCD LED POINTER METER
0 ~ 1 V
0 ~ 2A • • •
0 ~ 3A • • •
0 ~ 18V
0 ~ 2A •
0 ~ 3A •
0 ~ 30V
0 ~ 2A • • •
0 ~ 3A • • •
0 ~ A • • •
0 ~ 10A •
0 ~ 20A •
0 ~ 0V
0 ~ 2A •
0 ~ 3A •
These difference models of the DC power supply are available for choice of user.

4
U packi g a d I spectio
The packing should include the following items:
1󰦋DC power supply
2󰦋Power line cord
3󰦋Instruction manual
4󰦋Spare fuse
Please check to see that all of the above items are included.
Safety Precautio s
1. Before applying power to your DC power supply, make sure that power select switch is correctly
setting for your applicable AC power supply.
2. Connect the instrument to an AC power source using the power line core provided.
3. Do not connect a voltage that is greater than the current output voltage to the terminals of the
instrument.
4. Never ground yourself when taking electrical measurements. Keep your body isolated from
ground by using dry clothing; rubber shoes, rubber mat or any approved insulating material.
. Never touch exposed wiring, connections or any live circuit when attempting to take
measurements
6. Avoid shorting circuit the output of DC power supply.
7. Set the voltage and current adjustment knobs as you desire.
8. The unit should be stored in a dry and well ventilated place and the power cord removed if
storing for long periods.
Safety I formatio
The DC power supply series has been designed according to IEC1010 – 1 concerning safety
requirements for electrical measuring instruments with an overvoltage category (300V CAT II) and
pollution 2.
Safety Symbols
Important safety information, refer to the operating manual.
DC – Direct current.

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30V 10/20A
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30/50V 2/3/5A15/18V
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VOLTAGE
CURRENT
DC POWER
SUPPLY
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VOLTAGE
C. V.C. C.
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Earth ground.
Caution! Hot surface. Avoid contact.
Conforms to European Union directives.
I strume t Fro t pa el
Figure 1-1
1. OUTPUT VOLTAGE INDICATOR
This indicator shows output voltage as measured at the output terminals.
There is LCD or LED or pointer meter display type. They are available for choice of user.
2. OUTPUT CURRENT INDICATOR
This indicator shows output current as measured at the output terminals.
There is LCD or LED or pointer meter display type. They are available for choice of user.
3. COARSE(MAIN) VOLTAGE REGULATOR
Adjust output voltage of the DC power supply.
4. FINE VOLTAGE REGULATOR
This is a fine control. Adjust output voltage of the DC power supply.

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5. COARSE(MAIN) CURRENT REGULATOR
Adjust output current of the DC power supply and delivered.
6. FINE CURRENT REGULATOR
This is a fine control. Adjust output current of the DC power supply and delivered.
7. C.C. INDICATOR
Constant current mode indicator
8. C.V. INDICATOR
Constant voltage mode indicator
9. POWER ON/OFF SWITCH
This is main power switch of the instrument.
10. NEGATIVE OUTPUT TERMINAL
11. GROUND OUTPUT TERMINAL
12. POSITIVE OUTPUT TERMINAL
13. POINT METER ZERO (o ly poi ter meter display)
Each pointer meter has a mechanical screw adjustment for setting the zero point. Using a small
screwdriver, turn off the power and adjust the screw under the meter respectively to read zero.
There is only pointer meter model.
I strume t Back Pa el
Figure 1-2
1. HEAT SINK
There is an on the heat sink. It indicates "caution! Hot surface avoid contact".
2. POWER SELECT SWITCH
Two kinds of power 220VAC and 110VAC 0Hz/60Hz can be supplied to the instrument. According to
user’s needs, setting it
3. FUSES
There are two fuses in the AC power input socket. One is in use and the other is for spare part.
The fuse of The DC power supply series as follows:

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OUTPUT VOLTAGE
Regulated
OUTPUT CURRENT
Regulated
FUSE TYPE
Line 220VAC
FUSE TYPE
Line 110VAC
0 ~ 1 V 0 ~ 2A T 1A L 2 0V T 2A L 2 0V
0 ~ 3A T 1A L 2 0V T 2A L 2 0V
0 ~ 18V 0 ~ 2A T 1A L 2 0V T 2A L 2 0V
0 ~ 3A T 1A L 2 0V T 2A L 2 0V
0 ~ 30V
0 ~ 2A T 1A L 2 0V T 2A L 2 0V
0 ~ 3A T 2A L 2 0V T 4A L 2 0V
0 ~ A T 3.1 A L 2 0V T 6.3A L 2 0V
0 ~ 10A T A L 2 0V T 10A L 2 0V
0 ~ 20A T 8A L 2 0V T 1 A L 2 0V
0 ~ 0V 0 ~ 2A T 2A L 2 0V T 4A L 2 0V
0 ~ 3A T 3.1 A L 2 0V T 6.3A L 2 0V
4. AC POWER INPUT
WARNING
To avoid user for i jury a d the i strume t for damage, the
voltage value of AC power must be exami ed with same the power
requireme ts of i strume t before co ect power cord to live
power source.
WARNING
To avoid electrical shock, disco ect power cord from live power
source a d remove the test leads a d a y i put sig als before
replaci g the power fuses. Replace it o ly with the same type of
fuses.
CHAPTER 2. OPERATION
I troductio
WARNING
To avoid electric shock or perso al i jury, read “Safety
Precautio s” a d “Safety I formatio ” before Operatio .
Before making any operation always examine the DC power supply and accessories used with it for
damage, contamination (excessive dirt, grease, etc.) and defects. Examine the test leads for
cracked or frayed insulation and make sure the lead plugs fit snugly into the output jacks. If any
abnormal exist do not attempt to make any operation.

8
Li e Power Supply Setti g (Figure 2-1)
(O ly for the i strume t with POWER SELECT SWITCH )
Two kinds of AC line, 220VAC 0Hz/60Hz or 110VAC 0Hz/60Hz, can be supplied to the instrument.
Set it with a screwdriver to adapt your AC line.
Check to be sure that power select switch on back panel is switch to correct line voltage.
Check to be sure that fuse is correct rating current.
Figure 2-1
CAUTION
The applicable AC power supply range is:
220VAC ± 10% (198 to 242V~) 0Hz/60Hz or 110VAC ± 10% (98 to 122V~) 0Hz/60Hz.
NOTE: The instrument without POWER SELECT SWITCH is factory pre-set in accordance with your
main voltage when your local distributor place the order with the factory.
Operati g Procedure
CONSTANT VOLTAGE MODE
1. Turn the voltage regulator anti-clockwise to minimum position and the current regulator
clockwise to maximum position.
2. Press the power ON / OFF switch to ON.
3. Turn the voltage regulator clockwise to that you are desirous of output voltage value.
4. Connect the positive output terminal and negative output terminal with a load or similar
component.
. The voltage regulator controls the output voltage indicator. Indicator shows that output voltage
of the output terminals.

9
CONSTANT CURRENT MODE
1. Turn the voltage regulator clockwise to maximum position and the current regulator anti –
clockwise to minimum position.
2. Press the power ON/ OFF switch to ON.
3. Connect the positive output terminal and negative output terminal with a load or similar component.
4. Turn the current regulator clockwise to that you are desirous of output current value.
. The voltage regulator controls the output voltage indicator. The current regulator controls the output
current indicator. Indicator show that output voltage and current of the output terminals.
RESTRICTED CURRENT PROTECTION MODE
1. Press the power ON/ OFF switch to ON.
2. Turn the current regulator anti-clockwise to minimum position then clockwise a little.
3. Turn the voltage regulator clockwise to that you are desirous of output voltage level position
(approx.1. V).
4. Link the positive and negative output terminals with a wire.
. Turn the current regulator clockwise to get the current level at which the restricted current
protection will be active as you desire.
6. Remove the wire linked to the positive and negative output terminals. Connect the positive
output terminal and negative output terminal with a load or similar component.
7. When the output current achieves the setting value of restricted current protection, and the
restricted current protection is active.
NOTE: After setting of the restricted current protection, if the current regulator is turned again,
the restricted current protection range will be changed.
C.C. AND C.V. INDICATOR (Only for the instrument with C.C. and C.V. INDICA OR )
The C.C. indicator is controlled by the constant current mode. Otherwise C.V. indicator is
controlled by the constant voltage mode.
CAUTION
The DC power supply series has perfect restricted current protection, Even so, when the output
terminal is short - circuit, the DC power supply should be turned off and the short - circuit should be
removed before continuing operation because the power transistors in the instrument will bear
heavy. The AC power must be switched off before servicing and servicing should be referred to
a qualified person.

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CAUTION
Using this appliance in an environment with a strong radiated radio - frequency electromagnetic
field (approximately 3V/m) may influence its measuring accuracy.
CHAPTER 3. SPECIFICATIONS
Ge eral Specificatio s
Safety: Designed comply with IEC 1010 -1 specifications. CAT.II300V
Temperature: 0°C to 40°C for operating, −10°C to 0°C for storage
Under 7 % rated output power for continuous, upward of 7 %
rate output power for one hour.
Relative Humidity: 20% to 80% RH (0to 40).
Protectio : constant current and short - circuit protection
Weight & Size:
OUTPUT VOLTAGE
(regulated)
OUTPUT CURRENT
(regulated)
WEIGHT
SIZE
(LxWxH)
0 ~ 1 V
0 ~ 2A
Approx. 3kg
206
×
110
×
1 3mm
0 ~ 3A
Approx. 4kg
206
×
110
×
1 3mm
0 ~ 18V
0 ~ 2A
Approx. 4kg
206
×
110
×
1 3mm
0 ~ 3A
Approx. 4. kg
206
×
110
×
1 3mm
0 ~ 30V
0 ~ 2A
Approx. 4kg
291
×
136
×
1 8mm
0 ~ 3A
Approx. kg
291
×
136
×
1 8mm
0 ~ A
Approx. 3kg
291
×
136
×
1 8mm
0 ~ 10A
Approx. 12kg
36
×
26
×
164mm
0 ~
20A
Approx. 1 kg
36
×
26
×
164mm
0 ~ 0V
0 ~ 2A
Approx. kg
291
×
136
×
1 8mm
0 ~ 3A
Approx. 6kg
291
×
136
×
1 8mm

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Tech ical Parameters:
I put voltage: 220V AC ± 10% 0HZ/60HZ ± 2HZ or 110V AC ± 10% 0HZ/60HZ ± 2HZ
Voltage i dicatio accuracy: LED display and LCD display ±1%±2digits, Pointer meter display 2. %
Curre t i dicatio accuracy: LED display and LCD display ±2%±2digits, Pointer meter display 2. %
Output Voltage and Current:
OUTPUT VOLTAGE (regulated) OUTPUT CURRENT (regulated)
0 ~ 1 V
0 ~ 2A
0 ~ 3A
0 ~ 18V
0 ~ 2A
0 ~ 3A
0 ~ 30V
0 ~ 2A
0 ~ 3A
0 ~ A
0 ~ 10A
0 ~ 20A
0 ~ 0V
0 ~ 2A
0 ~ 3A
Source Effect (Li e regulatio ): CV≤0.01%+1mV CC≤0.2%+1mA
Loadi g Effect (Li e regulatio ): CV≤0.01%+3mV CC≤0.2%+3mA
Ripple ad oise: CV≤0. mVr.m.s CC≤3mAr.m.s
To obtain the stability guarantee of source and loading effect, allow the instrument to warm up for
at least 1 minutes.
CHAPTER 4.MAINTENANCE
I troductio :
Do not attempt to repair or service your instrument unless you are qualified to do so and have the
relevant calibration, performance test, and service information.
Replaci g the Fuse:

12
15/18V FUSE
30/50V FUSE


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 
CAUTION
 
 
WARNING
Tur off the power switch, remove the power li e cord from the
power socket a d disco ect the test leads at output termi als
before replaci g the fuse. Replace it o ly with same type of fuse.
Figure 4-1
Figure 4-2