GE Multilin UR 9UH UR-9UH CPU Module

Description

The GE Multilin UR‑9UH CPU Module is the high‑performance processing engine for UR‑series protection relays, executing real‑time protection logic, communication protocols, and high‑speed data acquisition with deterministic response times.

Specifications

• Manufacturer: GE Multilin

• Model: UR‑9UH / 12A0‑0600‑A6

• Product Type: CPU Module for UR‑series relays

• Processor Speed: 400 MHz high‑performance processor

• Response Time: <5 ms deterministic processing

• Memory: High‑capacity Flash + RAM for event logging and logic execution

• Communication Ports:

  • 2 × 100 Base‑FX fiber optic (LC)

  • 1 × 10/100 Base‑T Ethernet (RJ45)

  • 1 × RS485 serial

• Supported Protocols: IEC 61850, DNP3, Modbus RTU/TCP, IEEE C37.118 synchrophasors

• Operating Temperature: −40 °C to +70 °C

• Dimensions: 2.2 cm × 12.4 cm × 12.6 cm

• Weight: 0.85 kg 

• Mounting: UR chassis CPU slot

• Lifecycle Status: Discontinued by GE; strategic last‑time‑buy recommended

Features

• High‑Speed Processing: 400 MHz CPU executes protection logic and FlexLogic rapidly

• Deterministic Response: <5 ms cycle time for real‑time protection

• Advanced Communication: Fiber, Ethernet, and serial ports for redundant substation networking

• Synchrophasor Support: IEEE C37.118 data streaming for wide‑area monitoring

• Event & Fault Recording: High‑capacity Flash memory for oscillography and event logs

• UR‑Series Integration: Compatible with L90, T60, B30, C30, F35, and other UR platforms

• Redundancy Support: PRP and IEEE 1588 time synchronization

FAQ – Common Questions

• What_is_the_UR-9UH_for: It is the main CPU executing protection, control, logic, and communication tasks for UR‑series relays.

• Can_I_upgrade_to_9UH: Yes, but firmware alignment and backplane compatibility checks are required.

• Is_it_hot_swappable: No. Removing it will shut down the relay and protection functions.

• What_protocols_are_supported: IEC 61850, DNP3, Modbus, IEEE C37.118 synchrophasors.

• Why_is_it_high‑risk_to_replace: GE has discontinued the UR‑9UH; loss of CPU disables the entire protection scheme.