INSTRUCTION MANUAL
CUS60M Series
TDK-Lambda
<Page>
6-8. Parallel Operation
For parallel operation, method (B) is possible.
6-9. 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
.
6-10. 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)
8/19
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.Select appropriate backup diode whose rated Vrm higher
than power supply output voltage with margin.
2. Design sufficient heat dissipation for backup diode for
safe operation.
Use within the specification for 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
