MCH K Series User manual

OPERATION MANUAL
DC REGULATED POWER SUPPLY
K Series

INDEX
1. Introduction ………………………………… (1)
2. Model type ……………………………………… (2)
3. Specifications …………………………………… (3)
3. Front panel & operations …………………………(4-6)
4. Accessories & Maintenance ………………..…….(6-7)

1.INTRODUCTION
High current power supply is an adjustable, multi-function and
high-stability DC power supply. Long time operation af full scale,
Extra high accuracy, stability and reliability comparing to
normal power supply. They are ideal instruments for R&D
departments, colleges and factories.
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2、MODELTYPE
2
Model
Voltage
Current
Same
appearance
Spot
0~
30V
0~
60
V
0~
100
V
0-
120
V
0-
150
V
0~
4
A
0~
5
A
0~
10
A
0~
20
A
0~
30
A
0~
50
A
K3020D
●
●
●
●
K3030D
●
●
●
●
K3050D
●
●
●
●
K6010D
●
●
●
K6020D
●
●
●
K6050D
●
●
●
●
K1005D
●
●
●
●
K1205D
●
●
●
●
K1505D
●
●
●
●
K15010D
●
●
●
K1004D
●
●
●
K1204D
●
●
●
K1504D
●
●
●

2.1 Specifications
Types
High Power Power Series
Input voltage
110V/220V±10％60/50Hz；（State when ordering）
Display
accuracy
±0.5% + ld
effectiveness
±0.5%
Voltage adjustment
Load
adjustment
(10-100%)
50mV
20mV
Ripple and
Noise (P-P)
50mV
Current adjustment
Load
adjustment
(10-100%)
20mA
Ripple and
Noise (P-P)
20mA
Others
Operating
Ambient
温度：0℃-40℃，湿度：≤90％RH
Dimension
275*240*160mm/250*400*160mm
Weight
约5~12kg
3

3、FRONT PANEL & OPERATION
The picture above shows the appearance of K series
“5A-50A”power supply panel
Some models have 3 or 4 digits display, please refer to the
actual product
3.1Functions of the controls on front panel
(1) Power Switch.
4

(2) 3 digit LED current display.
(3) 3 digit LED voltage display.
(4) CC indicators.
(5) CV indicators.
Note: If the current (calculated by Ohm’s law) through the load
is lower than the preset current value of the power supply,
CV indicator lights, the power supply is working in
Constant Voltage status. Otherwise, CC indicator lights, the
power supply is in Constant Current status. And the actual
current though the load is limited to the preset current value.
(6) Current rough adjustment knob.
(7) Current fine tuning knob.
(8) Voltage rough adjustment knob.
(9) Voltage fine tuning adjustment knob.
(10) Negative output terminals.
(11) Positive output terminal.
(12) Ground terminal
5

3.2 Operation
1. Voltage Setting:
Adjust voltage knob to get desired voltage.
2. Current Setting:
Turn current control knob CCW to get a small value of
current, short cut output port, adjust current knob to get a
desired value.
4. ACCESSORIES & MAINTENANCE
4.1 Packing List
Power Cord 1pc
User’s Manual 1pc
Fuse 1pc(hide inside socket)
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4.2 CAUTION
1、If there is problem with the digital display and CV
indicator does not light after power on, the fuse probably
was broken, or power cable is poor contact and other fault,
Power off and disconnect the power cord, check whether
the power cord and the socket is good contact, or whether
the fuse is broken (change the fuse if necessary).
2、When working in Constant Voltage state，if output voltage
lower than what was preset and CC indicator lights, in order
to protect current, the instrument automatically turn to
Constant Current state. You must check the load or increase
the output current according to load.
3、When working in Constant Voltage state, if output current
lower than what was preset and CV indicator lights, in
order to protect open-circuit voltage, the instrument
automatically turn to Constant Voltage state. You must
check the load or increase the output voltage according to
use status.
4、When the instrument is unstable in Constant Voltage state，
Probably the AC input voltage is under 90% of the rated
value. Please check whether the power supply voltage is
within the rated. If the problem is not caused by the line
voltage, contact your nearest dealer.
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