13
TDK-Lambda
PFE300SA
･
500SA Series
INSTRUCTION MANUAL
6-12. 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 testing withstand voltage, set current limit of
withstand voltage test equipment at 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 at timer switch on
and off.
Connect each terminals according to the circuit diagram shown below.
2.5kVAC 1 minute (20mA) 3kVAC 1 minute (20mA)
Fig.6-8 Fig.6-9
Input to Base-plate Withstand Voltage Test Method Input to Output Withstand Voltage Test Method
1.5kVDC 1 minute
Fig.6-10
Output to Base-plate Withstand Voltage Test Method
Withstand Voltage Testing with External Application
The above Withstand Voltage Testing specification applies only to power module as stand-alone unit. Please take
note of the following points when Withstand Voltage Testing is performed with attached external application.
For connections shown in Fig. 5-1, when injecting 3kVAC between Input – Output, Voltage Divider Ratio
between Input – Base-plate and Output – Base-plate will be affected by capacitance value ratio connected between
the Input – Base-plate and Output – Base-plate.
When selecting external capacitor at the Input – Base-plate and Output – Base-plate, take care of the capacitance
value and voltage rating.
Capacitor of Input – Base-plate : (C2,C3,C6,C7,C13)
Capacitor of Output – Base-plate : (C11,C12)
