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Battery chargers for ACS64 and ACR44 locomotives

  • Project period: 07/2013 – 12/2021
  • Location: Germany / USA
  • Product category: Energy Systems

Schaltbau Refurbishment supplies battery chargers for the ACS64 and ACR44 locomotives to Siemens Sacramento for projects in the United States. These battery chargers were developed in Germany and are now assembled by a US partner company to fulfill the “Buy America” requirement.

On the input side, the battery chargers are supplied with 3AC 480 V and energizes the DC 72 V on-board system with up to 22 kW. The output voltage and therefor the battery charging is regulated by temperature compensation according to the specification of the battery manufacturer. If necessary, the charging characteristic can be modified by a parameter set within the password protected service menu later on. An extensive diagnostic system is implemented within the battery charger for an early detection of internal and external failures to support an quick repair. The evaluation of the diagnosis can be either done with a PC/Laptop connected to the service interface or directly without any additional utilities via the status code shown on the front panel display.

For their power, the battery chargers have a compact design and are installed on the vehicle in a 19″ rack with ten rack units in height.