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of DC isolation tester must be done before the test. Ensure that the unit is fully discharged after the test.
(a) Output ~ FG (chassis) : 500VDC, 100M or more
Isolation
Tester
4-2. Withstand Voltage
This series is designed to withstand 3.0kVAC between input and output, 1.5kVAC between input and FG (chassis) and
500VAC between output and FG (chassis) each for 1 minute. When testing withstand voltage, set current limit of with-
stand voltage test equipment at 20mA ( Output-FG (chassis) : 100mA ). 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 input and output as follows :
(a) Input ~ FG (chassis) : solid line
1.5kVAC, 1min (20mA)
(b) Input ~ Output : dotted line
3kVAC, 1min ( 20mA )
Withstand
Voltage
Tester
5. Mounting Directions
5-1. Output Derating according to the Mounting Directions
Recommended standard mounting is Method ( A ). Method ( B ), ( C ) and ( D ) are also possible. Refer to the Output
Derating below. Please do not use installation Method ( E ), where the PCB will be on the topside and heat will be
AC(L)
+ V
+V
AC(N)
- V
- V
FG
+V
AC(L)
+V
AC(N)
-V
-V
FG
(c) Output ~ FG (chassis) : 500VAC, 1min (100mA)
Withstand
Voltage
Tester
4
TDK-Lambda
LS
Series
25-150
INSTRUCTION MANUAL
+V
AC(L)
+V
AC(N)
-V
-V
FG
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