ENERSYS SCR Transformer Type Battery Charger LTC2

Return all replaced components to your service center.

Reconnect all leads exactly as they were removed.

Replace any heat-shrink tubing if any old tubing was removed.

Disconnect the battery and AC power before starting the test.

Disconnect the three phase input wires to the SCR/Diode Block.

Set the meter to its X1 scale or diode scale.

Connect the meter's negative lead to the input connection of the SCR/Diode Block.

Connect the meter's positive lead to the - bussbar.

Enter the reading from the meter. If using an analog meter, it should read close to 0 ohms. If using a DVM, it should read a .7V drop on the diode scale.

Reverse the wires on the meter.

Enter the reading from the meter. The needle should not move on the analog scale (measurement of infinity). The DVM should not get a reading.

Check if the SCR/Diode Block is shorted. It is shorted if the meter measures zero current for both directions (polarities).

WARNING: Faulty SCR/Diode Blocks may cause voltage to be present at the DC cables.

Start the charger, and run it for 5 minutes with a battery connected.

Turn off the charger and disconnect the battery.

Temperature of the SCR/Diode Blocks within 1 minute after disconnecting the battery

WARNING: Heatsink and SCR/Diode Blocks may be very warm. Please exercise caution.

Please follow these steps before testing the Transformer:

Connect the charger to AC power.

You will be testing the transformer's windings (with a good quality meter) to check the transformer's voltages.

Your measurements should be within 10% of what is listed on the nameplate.

Second Transformer Test (120V Test)

Return all replaced components to your service center.

The following sections explain how to replace each component. After replacing a component, be sure to:

1. Reconnect all leads exactly as they were removed,

2. Replace any heat-shrink tubing if any old tubing was removed,

Please follow these steps before removing or replacing any component: