Publicité
4. Isolation / Withstand Voltage
4-1. Isolation Test
Isolation resistance between output and FG (chassis) shall be more than 100M at 500VDC. For safety
purposes, voltage setting on DC isolation tester must be done before the test. Ensure that the unit is fully
discharged after the test.
Output ~ FG (chassis): 500VDC, 100M or more
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 withstands volt-
age, set current limit of withstand voltage test equipment at 20mA (Output-FG (chassis): 100mA). The ap-
plied 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
(b) Input ~ Output : dotted line
1.5kVAC, 1min (20mA)
3kVAC, 1min ( 20mA )
8
TDK-Lambda
LS 200 Series
INSTRUCTION MANUAL
(c) Output ~ FG (chassis) : 500VAC
1min (100mA)
Publicité
