TDK-Lambda LS Series User Manual

Contents

TDK-Lambda LS Series User Manual Manual pdf 20 page image

0 ・All specifications are subject to change without notice.LS Series Isolation TestIsolation resistance between output and FG (chassis) shall bemore than 100MΩ at 500VDC. For safety, voltage setting of DCisolation tester must be done before the test. Ensure that theunit is fully discharged after the test.(A) Output - FG (chassis) : 500VDC, 100MΩ or more Withstand VoltageThis series is designed to withstand 3.0kVAC between inputand output, 1.5kVAC between input and FG (chassis) and500VAC 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 fromzero to testing value and then gradually decreased for shutdown. When timer is used, the power supply may be damagedby high impulse voltage at timer switch on and off. Connectinput and output as follows.4. Isolation / Withstand VoltageAC(N)AC(L)FG+V+V-V-VIsolationTester Series OperationFor series operation, either method ( A ) or ( B ) is possible.Method (A)Method (B) Parallel Operation(A) Operation to increase the Output Current is not possible.(B) Operation as a Backup Power Supply is possible as follows.1. Set the power supply output voltage higher by theamount of forward voltage drop (V F ) of the diode.. Please adjust the output voltage of each power supplyto be the same.. Please use within the specifications for output voltageand output current.(A)(B)OutputTerminalPowerSupplyLoadOutputTerminalOutputTerminalPowerSupplyLoadLoadOutputTerminalOutputTerminalPowerSupplyLoadOutputTerminalOutputTerminalPowerSupplyLoadOutputTerminalNote : In case of Method ( A ), please connect diodes to preventthe reverse voltage.

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