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4-10. Withstand Voltage
This series is designed to withstand 3.0kVAC between input and output, 2.0kVAC between input and
each for 1 minute. When testing withstand voltage, set current limit of the withstand voltage test equipment to 10mA (output -
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) : 3.0kVAC 1min(10mA)
Input -
(Solid line) : 2.0kVAC 1min(10mA)
(A)ZWS50BAF, ZWS75BAF
Withstand
Voltage
Tester
■Output -
: 500VAC 1min(20mA)
(A)ZWS50BAF, ZWS75BAF
Withstand
Voltage
Tester
Note 1 : This product have monolithic ceramic capacitor in secondary circuit to
Some of the withstand voltage tester may generate high voltage at the matching with monolithic ceramic capacitor and may cause the unit damage.
So, please check the waveform of applied voltage.
Note 2 : In case of using external noise filter, capacitance between "Input and
Output", there is a possibility exceeding withstand voltage between "Output and
"Output and
". If the voltage exceeding withstand voltage, please add external capacitor to "Output and
On the other hand, no need to check the voltage in case of "Output and
The example of noise filter circuit that
may increasing capacitance value between
"Input and
"
(Capacitance value in dashed line is added.)
AC(L)
+
AC(N)
_
AC(L)
+
AC(N)
_
(B)ZWS100BAF, ZWS150BAF, ZWS300BAF
Withstand
Voltage
Tester
(B)ZWS100BAF, ZWS150BAF, ZWS300BAF
Withstand
Voltage
Tester
.
" might be increased. When testing withstand voltage between "Input and
" (500VAC). Please check the voltage between
" is shorted.
-6-
TDK-Lambda
ZWS-BAF Series
Instruction Manual
and 500VAC between output and
AC(L)
+
AC(N)
_
+R(CN52)
-R(CN52)
AC(L)
+
AC(N)
_
+R(CN52)
-R(CN52)
". It can decrease the voltage.
External capacitor adding point
or short point.
Even in the case of "+V and
There is a similar effect.
: 20mA).
",
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