How do you test a battery charger transformer?

To test a battery charger transformer, you first need to ensure that the charger is unplugged for safety. Then, use a multimeter to check for continuity across the primary and secondary windings of the transformer. Set the multimeter to the resistance setting and probe the terminals; a reading of low resistance indicates continuity and a functioning transformer. For voltage testing, plug in the charger and measure the output voltage at the secondary terminals to ensure it corresponds with the specifications. If the readings are inconsistent or absent, the transformer may be defective and require replacement. Additionally, using infrared thermography can help identify overheating issues that might indicate internal failures. It’s crucial to carry out these tests systematically for accurate diagnostics, ensuring the longevity and efficiency of the industrial oils and lubricants being used in conjunction with your equipment.