369-HI-0-0-0-0 GE Multilin Series Protection Relay

The GE Multilin 369-HI-0-0-0-0, also cataloged as the 369 Motor Protection Relay, operates as a dedicated hardware component for monitoring, managing, and protecting industrial electric motors within power automation networks. This microprocessor-based platform samples line metrics and thermal inputs to execute protection algorithms, isolating connected motor assets during electrical or thermal faults.

Hardware Specifications

Backplane Bus Communication Velocity and Firmware Architecture

The internal computational architecture uses high-density processing components to maintain optimal communication velocity across the internal backplane bus layers. Enforcing strict firmware flash compatibility standards across all input and logic registers allows the central processing core to scan the 12 RTD inputs, current transformer line metrics, and fault registers simultaneously. Raw analog input signals pass through hardware filters and convert into digital data streams for the central processor. The internal bus configuration delivers real-time calculation of thermal capacity and phase balance, routing trip commands and diagnostic states directly to the enhanced front-panel interface or rear serial communication links within millisecond intervals.

Frequently Asked Questions

Q: What type of primary inputs does the 369-HI-0-0-0-0 model monitor to track motor health?

A: This model continuously monitors primary phase current inputs from external current transformers alongside up to 12 individual RTD temperature elements. The central processor uses this concurrent data stream to calculate real-time thermal capacity and trigger overcurrent or overtemperature trips.

Q: What are the electrical input boundaries for the control power supply loop on this unit?

A: The high-range (HI) power module accepts auxiliary control inputs from 50 to 300 V DC or 60 to 265 V AC at line frequencies of 50/60 Hz. The internal power supply conditions these raw inputs to feed stable low-voltage DC rails to the internal logic boards.