INSTRUCTION MANUAL
CUS100MB
TDK-Lambda
<Page>
4-8. Parallel Operation
For parallel operation, method (B) is possible.
4-9. Isolation Test
Isolation resistance between Output and
(Protective Earth) is more than 100M
Ω
at 500VDC. For safety operation, voltage
setting of DC isolation tester must be done before the test. Ensure that the unit is fully discharged after the test.
Output -
(Protective Earth) : 500VDC More than 100M
Ω
.
4-10. Withstand Voltage
These products are designed to withstand 4.0kVAC between input and output, 2.0kVAC between input and
, and 1.5kVAC
between output and
each for 1 minute. When testing withstand voltage, set current limit of the withstand voltage test
equipment to 20mA. The applied voltage must be gradually increased from zero to the testing value and then gradually
decreased for shut down. When timer is used, the power supply may be damaged by high impulse voltage at timer switch on
and off. Connect input and output as follows.
Input - Output(Dashed line) : 4.0kVAC 1min(20mA)
Input -
(Protective Earth)(Solid line) : 2.0kVAC 1min(20mA) Output -
(Protective Earth) : 1.5kVAC 1min(20mA)
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Power
Supply
Power
Supply
Load
+V
-V
+V
-V
+
-
Power
Supply
Power
Supply
Load
+V
-V
+V
-V
+
-
(B) To use as Backup Power Supply.
1. Adjust the output voltage of each power supply to be
the same.
2. Set power supply output voltage higher by the
forward voltage drop (Vf) of diode.
Use within the specification for output voltage and
output power.
(A) To increase the Output Current is not possible.
AC(L)
AC(N)
Isolation
Tester
+
‐
AC(L)
AC(N)
+
‐
AC(L)
AC(N)
+
‐
Withstand
Voltage Tester
Withstand
Voltage Tester
Withstand
Voltage Tester
