GE UR7CM Feeder Protection Relay – Obsolete UR Series Spare Part

Technical Dossier

Product Details And Specifications

GE UR7CM Feeder Protection Relay – Obsolete UR Series Spare Part

DriveKNMS maintains sourced inventory of discontinued GE UR-series modules including the UR7CM. Each unit is individually inspected before dispatch.

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Specific electrical parameters (CT input ratings, voltage thresholds, communication firmware version) vary by chassis configuration and order code suffix. Contact DriveKNMS with your full nameplate data for compatibility verification.

Solving the Discontinued Hardware Crisis

The GE Universal Relay platform entered widespread service in the late 1990s and 2000s across North American and international utilities, petrochemical plants, and large industrial facilities. The UR7CM card occupies a defined slot in the UR chassis and handles feeder-level protection logic — overcurrent elements (50/51), earth fault (50N/51N), and in many configurations, reclosing (79) and breaker failure (50BF) functions.

GE Grid Solutions has progressively migrated its protection portfolio toward the UR2 and newer Reason and Multilin 8 Series platforms. Replacement parts for first-generation UR chassis modules, including the UR7CM, are no longer available through standard distribution channels. This creates a documented supply gap for the thousands of UR-chassis installations still in active service globally.

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

Sourcing a verified UR7CM spare extends the operational life of the existing protection scheme by 5 to 10 years without any of those costs. It is the lowest-cost, lowest-risk path to maintaining protection integrity on aging feeder circuits.

Condition & Reliability Assurance

Discontinued relay modules present specific failure modes that differ from new production hardware. DriveKNMS applies a structured 5-step inspection protocol to all UR-series modules before dispatch:

1. Electrolytic Capacitor Assessment: Visual and ESR-based screening for capacitor aging, bulging, or electrolyte leakage — the primary failure mode in relay modules manufactured before 2010.
2. Firmware Version Verification: Firmware label and internal version string are documented and disclosed. Customers requiring a specific firmware revision for settings compatibility are advised prior to shipment.
3. Pin and Connector Inspection: All backplane connector pins are inspected under magnification for corrosion, mechanical deformation, or contamination. Affected pins are cleaned or the unit is quarantined.
4. Functional Power-On Test: Unit is energized in a controlled bench environment. LED status indicators, communication port response, and self-diagnostic outputs are verified.
5. Cosmetic and Label Audit: Nameplate data, order code suffix, and serial number are recorded and provided with the shipment documentation.

Key Features for System Maintenance

Q: How do I confirm the unit is genuine GE manufacture?
A: All units supplied by DriveKNMS are original GE Grid Solutions manufacture. Nameplate data, order code, and serial number are provided with each shipment. We do not supply third-party reproductions or unlabeled assemblies.

Q: Can you support multi-unit or repeat RFQ requests?
A: Yes. Send the model list, target quantity and destination so DRIVEKNMS can review sourcing options and quote the requirement as a project RFQ.

Q: Do you offer exchange or repair services?
A: Yes. DriveKNMS accepts failed UR7CM units for evaluation. Depending on fault type, board-level repair may be available. Contact us with the fault description and nameplate data for a repair assessment.