ABB 1MRK002239-BB modul napajanja na zalihi

Configured for high-voltage DC primary bus regulation in Relion protection and control relays, the ABB 1MRK002239-BB, also cataloged as the PSM 1MRK002239-BB Power Supply Module, provides direct physical/electrical execution.

Hardware Specifications

Backplane Bus Communication Velocity and Power Distribution

The PSM board regulates internal operating voltages across the rack backplane bus, maintaining deterministic communication velocity and stable rail potentials for adjacent processing and I/O cards. Isolation barriers prevent primary DC line transients from propagating into internal logic sub-circuits, preserving firmware flash integrity during system power cycles.

Frequently Asked Questions

Q: What is the primary input voltage operating range for the 1MRK002239-BB PSM card?

A: The board accepts a nominal input range from 90 VDC to 250 VDC, converting line power to isolated internal supply rails.

Q: Can the PSM module be replaced without powering down the host protective relay chassis?

A: System power must be isolated prior to removal. De-energize the primary DC input circuit to prevent arc flash and avoid interrupting active protection algorithms on the backplane bus.

Field Installation Guidelines

1. Verify that the primary auxiliary supply line is de-energized and tested with a calibrated multimeter before attaching wiring connections.
2. Insert the PSM card firmly into the designated rack slot, ensuring the edge connector fully engages with the backplane bus without applying rotational force.
3. Tighten the retaining screws on the front panel to secure chassis grounding and mechanical retention.
4. Connect the earth ground wire directly to the terminal screw to ensure surge protection pathways function properly.
5. Apply power within the designated 90-250 VDC limits and verify LED status indicators on the relay front panel.