La Marche TPSD Installation And Operation Manual
Also see for TPSD: Instructions
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Contents
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72.2 Changing Transformer TapsNOTE: This procedure refers only to TPSD battery chargers that accept three input voltages of 120, 240 and208 VAC [Voltage code: ABD]. All other TPSD battery chargers do not include transformer taps.Before wiring AC power to the TPSD, check the wiring of the power transformer PT, to be sure it is connectedfor the correct AC input voltage. The TPSD accepts standard input voltages of 120, 208 or 240 VAC by changingthe connections to the input terminals. No other changes are required.NOTE: The TPSD is wired at the factory for 240 VAC, except on special request...Before changing the PT taps, be sure that AC supply and DC loads to the TPSD are turned off and locked out.Verify that no voltage is present by using a voltmeter at all input and output terminals. Turning off the AC andDC circuit breakers on the TPSDdoes NOT eliminate live voltages inside the enclosure. Also de-energize anyexternal wiring to the alarm relay contacts.Verify that all voltages within the enclosure are de-energized and locked out. Change the connections to theinput terminals as shown in the table and figure on the following page.NOTE: A TPSD battery charger rated for 480 VAC or 600 VAC input uses a special transformer that has no taps.The 480 VAC and 600 VAC transformers cannot be used for any other input voltage. |
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