11
TDK-Lambda
PFE700SA Series
INSTRUCTION MANUAL
6-10. Isolation Resistance
Isolation resistance between Output – Base-plate
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 – Base-plate :
100M
Ω
or more at 500VDC
Fig.6-4 Isolation Resistance Test Method
6-11. Withstand Voltage Test
This series is designed to withstand 2.5kVAC between input and base-plate, 3.0kVAC between input and output and
1.5kVDC between output and base-plate each for 1 minute.
When performing tests at Input – base-plate and Input – Output, do the withstand voltage test after setting current
limit value of the withstand voltage testing equipment to 20mA.
Be sure to apply DC voltage between Output - base-plate. Avoid applying AC voltage during this test because this
will damage the power supply.
The applied voltage must be gradually increased from zero to testing value and then gradually decreased for shut
down. When timer is used, the power supply may be damaged by high impulse voltage generated during timer switch
on and off.
Connect each terminal according to the circuit diagram shown below.
2.5kVAC 1 minute (20mA) 3kVAC 1 minute (20mA)
Fig.6-5 Fig.6-6
Input to Base-plate Withstand Voltage Test Method Input to Output Withstand Voltage Test Method
1.5kVDC 1 minute
Fig.6-7
Output to Base-plate Withstand Voltage Test Method
