GE UR6AV Replacement/Upgrade Solution for UR Series

Product Overview

GE UR6AV Replacement/Upgrade Solution for UR Series: Seamless Migration from Legacy Relay I/O Platforms

The GE Multilin UR6AV is a Relay Digital I/O Expansion Card engineered for the Universal Relay (UR) Series platform — one of the most widely deployed protection and control relay architectures in power generation, transmission, and industrial automation environments. As legacy relay systems age and OEM support windows close, plant engineers and procurement teams face increasing pressure to source verified replacement modules that maintain full backward compatibility with existing wiring, communication infrastructure, and protection logic.

The UR6AV module slots directly into the UR Series modular chassis, providing relay output capability for tripping, alarming, and control functions. Its form factor, terminal block pinout, and firmware interface are fully compatible with the UR platform’s slot-based architecture, meaning no rewiring of existing field cables, no reprogramming of protection settings, and no modification to the control cabinet layout is required during a like-for-like swap.

For facilities running GE Multilin UR-family relays such as the T60 Transformer Management Relay, L90 Line Differential Relay, B90 Bus Differential Relay, or C60 Breaker Protection Relay, the UR6AV is a critical spare that directly supports relay output expansion without requiring a full relay chassis replacement. Plants that have standardized on the UR platform benefit from the UR6AV’s plug-and-play compatibility across multiple relay types within the same series.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful UR6AV replacement is rarely a standalone action — it is part of a broader relay system health check and spare parts strategy. During a planned or emergency swap of the UR6AV, field engineers typically audit adjacent modules within the same UR chassis to assess overall system reliability.

The UR6AV works in conjunction with the UR6H CPU Module, which serves as the central processing unit of the UR relay chassis. If the CPU module is running an older firmware revision, upgrading it alongside the UR6AV ensures that the relay output card operates within the validated firmware environment. Similarly, the UR6P Power Supply Module should be inspected during any relay chassis maintenance window — a degraded power supply is a common root cause of intermittent relay output failures that are often misdiagnosed as I/O card faults.

For sites where the UR relay communicates over IEC 61850 GOOSE or DNP3 protocols to a substation automation system or SCADA, the UR6E Ethernet Communication Module is a frequently co-ordered component. Ensuring the communication module is current prevents protocol handshake issues after the relay chassis is reassembled. Sites using legacy serial communication over RS-485 Modbus should verify the UR6G Serial Communication Card is functioning correctly before commissioning the replaced UR6AV.

In multi-bay switchgear or protection panels where several UR-family relays are installed side by side — such as a combination of T60 transformer protection and C60 breaker protection relays — it is common practice to order the UR6AV in quantities of two or more to maintain a site spare. This eliminates repeat procurement lead times during future outages. The UR6D Digital Input Module is another high-demand spare in the same chassis family, as digital input cards and relay output cards are typically replaced on the same maintenance cycle.

For engineers performing a full protection relay modernization — migrating from older electromechanical or first-generation numerical relays to the UR platform — the UR6AV is often part of a complete module set that includes the chassis backplane, CPU, power supply, I/O cards, and communication modules. Signal isolators and terminal marshalling blocks in the control cabinet may also require review to ensure signal levels are compatible with the UR6AV’s relay contact ratings. Where the existing control cabinet uses a UR Series 19-inch rack chassis, the UR6AV slots in without any panel cutout modification, preserving cabinet integrity and minimizing downtime during the retrofit.

Retrofit Guidance FAQ

Q: Can I replace the UR6AV without rewiring the existing field cables?
A: Yes. The UR6AV uses the same rear terminal block pinout as other UR Series relay output cards. Field cables connected to the terminal block can remain in place. Simply remove the old module, insert the UR6AV into the same chassis slot, and reconnect the terminal block. No field rewiring is required.

Q: Do I need to reprogram the relay protection settings after replacing the UR6AV?
A: No. The UR6AV is a hardware I/O expansion card. Protection settings, logic equations, and relay configuration are stored in the CPU module, not in the I/O card. Replacing the UR6AV does not affect stored settings. However, it is recommended to perform a functional output test using EnerVista UR Setup after installation to verify relay contact operation.

Q: Is the UR6AV compatible with all UR Series relay chassis sizes?
A: The UR6AV is designed for the UR modular chassis platform. Compatibility depends on the specific chassis model and available slot positions. Consult the UR Series Installation and Maintenance manual or contact TOPNLMS with your chassis model number to confirm slot compatibility before ordering.

Q: What communication protocols does the UR6AV support?
A: The UR6AV is a relay output I/O card and communicates internally via the UR chassis backplane bus. It does not independently handle external communication protocols. External protocol support (IEC 61850, DNP3, Modbus) is managed by the UR communication module installed in the chassis.

Q: How much physical space does the UR6AV require in the control cabinet?
A: The UR6AV occupies a single module slot in the UR Series chassis. No additional panel space or DIN rail mounting is required. The module is a direct slot-in replacement with the same physical dimensions as the outgoing card.

Q: Can the UR6AV be used as a spare for multiple relay types in the same UR family?
A: Yes. The UR6AV is compatible across multiple UR-family relay types that share the same modular chassis architecture, including the T60, L90, B90, and C60. Maintaining a single UR6AV spare can cover relay output expansion needs across an entire protection panel.

Warranty Assurance

Every GE Multilin UR6AV module supplied by TOPNLMS is covered by a 12-month warranty from the date of shipment. Prior to dispatch, each unit undergoes a pre-shipment inspection that includes visual examination, connector integrity verification, and functional checks to confirm the module meets operational specifications.

In the event of a confirmed defect or failure within the warranty period, TOPNLMS provides direct replacement support. Our technical team will coordinate the return and replacement process to minimize disruption to your operations. We understand that relay protection systems are critical infrastructure — our after-sales response is structured to prioritize rapid resolution for warranty claims.

TOPNLMS maintains stock of the UR6AV and related UR Series modules to support both planned procurement and emergency replacement scenarios. Orders are processed promptly, with shipping from our Xiamen facility to global destinations. Expedited shipping options are available for urgent outage situations.

For procurement teams requiring documentation, we can provide a packing list, commercial invoice, and certificate of conformance upon request. All modules are shipped in anti-static protective packaging to prevent transit damage.

Contact our technical sales team to confirm stock availability, request a quotation, or discuss bulk pricing for site spare programs.

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