CPFE1000FI SERIES
POWER SUPPLY
OPERATION MANUAL
21
19 August 2020
20. Withstand Voltage
This unit is safety certified to meet a withstand voltage of 4242VDC between input to output, 2500VDC
between input and baseplate, and 500VDC from output to baseplate. During production the unit is tested,
in accordance with safety requirements, to verify withstand voltage performance.
If additional withstand voltage testing in end equipment is required, limit the applied withstand voltage to
2500VDC between input to output (short output to baseplate) and 2500VDC between input and baseplate for
a maximum dwell of 1 minute. Failure to reduce the voltage to these levels could result in components being
damaged.
When performing this test, set the current limit of test equipment to 20mA.
When applying the 500VDC withstand voltage between output and baseplate, limit the applied dwell to 1
minute. When performing this test, be sure to apply DC voltage only. Avoid applying AC voltage during this
test because this will damage the module.
Refrain from injecting a high test voltage suddenly. Be sure to gradually increase the applied voltage during
testing and gradually reduce the voltage after the test.
Caution- when using a timer switch on the test equipment, an impulse voltage which is higher than the applied
set voltage, can be generated when the timer switch is cut off. This causes damage to the power module.
Connect each terminal according to the circuit diagrams shown below.
2.5kVDC 1 minute (20mA)
Fig. 20-1 Input to Baseplate Withstand Voltage
Test Method
