The ABB 1MRK002239-BBR01 SR91C790 is a robust power supply module designed for high-reliability protection and control systems. It provides stabilized DC power to internal electronic components, ensuring consistent performance in demanding electrical substation and industrial environments.

 

Product Parameters

• Model: SR91C790
• Part Number: 1MRK002239-BBR01
• Input Voltage: 110-250 V AC/DC (Wide-range)
• Output Type: Multi-rail stabilized DC output
• Mounting: Plug-in module for subrack systems

Product Specifications

• Enclosure: Industrial-grade metal shielding
• Cooling: Passive convection (No fans required)
• Protection: Built-in surge, overvoltage, and short-circuit protection
• Connector: Multi-pin backplane interface

 

Application Fields

• Substation Automation: Powering IEDs and protection relays.
• Grid Control: Reliable energy supply for monitoring units.
• Industrial Systems: Supporting PLC and DCS frameworks in power plants.

 

Product Q&A

• Q: Is the SR91C790 compatible with all Relion series racks?
  • A: Compatibility depends on the specific backplane version; verify the 1MRK002239-BBR01 part number against your system manual.
• Q: What should be checked if the module fails to start?
  • A: Verify the input voltage level and ensure the module is fully seated in the rack connector.
• Q: Does this unit support redundant configurations?
  • A: Redundancy is typically handled at the system level depending on the host rack architecture.