IV.
STEPS FOR SETTING CURRENT LIMIT
(1)
Determine the maximum safe current for the device to be powered.
(2)
Temporarily short the (+) and (-) terminals of the power supply together
with the test lead (
For safety assurance, please select the adequate output
test lead according to Table 1
).
(3)
Rotate the COARSE VOLTAGE control away from zero sufficiently to
have the CC indicator lightened.
(4)
Adjust the CURRENT control for the desired current limit. Read the
current value on the Ammeter.
(5)
The current limit (overload protection) has now been preset. Do not
change the CURRENT control setting after this step.
(6)
Remove the short between the (+) and (-) terminals. The power supply
returns to the constant voltage mode and is ready to use.
Table 1. Output Test Lead selection
Conductor
Maximum
Conductive
Resistor (
Ω
/km)
Permissible
Current A(amp)
Wire No.
AWG
Cross section Area
(mm
2
)
Outer Diameter
(mm)
24
0.22
0.64
88.6
7.64
22
0.34
0.78
62.5
10.0
20
0.53
0.95
39.5
13.1
18
087
1.21
24.4
17.2
16
1.32
1.53
15.6
22.6
14
2.08
2.03
9.90
30.4
12
3.29
2.35
6.24
40.6
10
5.23
3.00
3.90
55.3
