TDK-Lambda CUS250LD Mode D'emploi page 16

(A) To increase the output current is not possible.
Power Supply
Output
Terminal
Output
Terminal
4-9. Isolation Test
Isolation resistance between Output – FG is more than 100M 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.
4-10. Withstand Voltage
This series is designed to withstand 3.0kVAC between input and output, 2.0kVAC between input and FG and 500VAC between output and
FG each for 1 minute. When testing withstands voltage, set current limit of the withstand voltage test equipment to 20mA (output – FG:
100mA). 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.
Intput - Output (Dashedline): 3.0kVAC 1min (20mA)
Input - FG (Solidline):
Withstand
Voltage Tester
Withstand
Voltage Tester
5-1. Output Derating according to the Mounting Directions.
Recommended standard mounting method is (A,C). Method (B,D,E) are also possible. Refer to the output derating below.
Load(%) of derating curve indicates output power.
Load
AC (L)
AC (N)
Isulation
Tester
FG
2.0kVAC 1min (20mA)
AC (L)
AC (N)
FG
(B) To use as Back-up 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.
Power Supply
Output
Terminal
Output
Terminal
Output - FG: 500VAC 1min (100mA)
AC (L)
AC (N)
Withstand
Voltage Tester
FG
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TDK-Lambda
CUS250LD Series
Instruction Manual
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