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Battery Controls
Battery Disconnect Unit/String Control Unit (BDU/SCU). The BDU manages individual strings of series-connected XMP subpacks through its on-board String Controller Unit (SCU), pre-charge circuit, current sensor, and contactors. For large XPAND systems of multiple parallel-connected strings, BDUs are connected in parallel. Compatible with 12V or 24V systems, Isolated high voltage measurements up to 1250 VDC, Current sensing capability -500A to +500A standard; up to ± 1200A optional, Redundant dual contactor controls ensure safe operation, Self-addressing provides simple installation and service, IP69 compliant (with connectors mated)
The MCU manages multiple parallel strings (up to 24) while providing a single and simple interface to the application controller.
- Compatible with 12V or 24V systems
- XALT Master Control Unit (MCU)
- Autonomously controls balancing of battery strings
- Provides autonomous addressing to individual battery strings, supporting a true modular architecture
- HV Interlock Loop (HVIL) monitoring of each battery string
- Provides collective system and diagnostic information to the application
- IP69 compliant (with connectors mated)