Ratelco 102B-3504-01 battery charger

The Ratelco 102B‑3504‑01 is an industrial constant‑voltage battery charger designed for high‑current (up to 10 A) applications in 36–50 V systems. Common failures on this model include transformer winding insulation breakdown, rectifier diode stack failure, and overheating of the internal heat sink or cooling fan. Check the input voltage and phase balance, inspect the transformer for signs of arcing or core damage, and verify that the rectifier diodes are conducting properly with a multimeter; also confirm that the output current limit is functioning by measuring the DC charging current under load.[oss-gpt-20b]

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