Description
Product Core Brief
- Model:
- Brand: ABB
- Series: ABB REG216 digital generator-transformer protection system
- Core Function: Comprehensive protection for generators, generator-transformer units and associated power transformers.
- Product Type: Generator-transformer protection relay / IED
- Key Specs: Generator differential | Transformer differential | Overcurrent | Earth-fault | Reverse power | Over/under voltage | Over/under frequency | Loss of excitation | Out-of-step | Stator/rotor earth-fault support | Disturbance recording | Modular I/O
- Lifecycle Note: Legacy product; widely deployed in hydropower, thermal power and industrial power plants. REG216C and later Relion generator protection relays are typical successors.
- Condition: New Surplus / Used, depending on stock
Product Introduction
ABB REG216 is a digital generator-transformer protection system designed for generators, block transformers and associated power transformers. It uses modular hardware and a configurable software library, allowing the protection scheme to be adapted to the size of the primary system and the required redundancy level.
The system supports generator differential protection, transformer differential protection, overcurrent protection, earth-fault protection, reverse power protection, overvoltage/undervoltage protection, overfrequency/underfrequency protection, loss of excitation protection and out-of-step protection. With external injection units such as REX010, it can also provide 100% stator and rotor earth-fault protection.
REG216 is available in two design versions: REG216 and REG216 Classic. They differ mainly in binary process I/O modules. REG216 uses the 216GD61a I/O assembly, while REG216 Classic uses 216GE61, 216GA61 and 216GA62 assemblies.
The system communicates with higher-level control systems and supports protocols such as IEC 60870-5-103. IEC 61850 support depends on the installed communication module and project configuration, so it must be verified from the actual nameplate and configuration data.
Because REG216 is a legacy platform, replacement projects should verify the installed hardware modules, I/O count, protection function set, communication option and existing settings before migration.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Brand | ABB |
| Model | |
| Product Type | Generator-transformer protection relay |
| Typical Application | Generators, generator-transformer units, power transformers, industrial and utility power plants |
| Protection Functions | Differential, overcurrent, earth-fault, reverse power, voltage, frequency, loss of excitation, out-of-step, thermal overload, CBFP depending on configuration |
| Earth-Fault Support | Stator/rotor earth-fault protection possible with REX010 injection unit |
| HMI / Engineering | PC-based parameter setting, event display, disturbance recording, measurement display |
| Communication | IEC 60870-5-103; IEC 61850/Modbus possible depending on configuration and installed module |
| Condition | New Surplus / Used |
Quality Control Process
- Model version verification: Confirm REG216 vs REG216 Classic and installed I/O assemblies.
- Module inspection: Check 216GD61a, 216GE61, 216GA61, 216GA62, 216DB61, 216EA62, 216VC62a and power supply modules.
- Nameplate confirmation: Verify auxiliary voltage, CT/VT ratings, I/O configuration and firmware version.
- Secondary injection test: Confirm differential, overcurrent, earth-fault, voltage, frequency and reverse power protection.
- Communication test: Verify IEC 60870-5-103 or other protocol integration with SCADA/DCS.
- Packing: Anti-static bag, moisture barrier, rigid corner protection and reinforced carton.
Replacement Pitfall Guide
❗ Confirm REG216 vs REG216 Classic. The two versions use different I/O assemblies; swapping them without verification can cause wiring and logic mismatches.
❗ Do not assume IEC 61850 support. Communication capability depends on the installed module and project configuration; many REG216 installations use IEC 60870-5-103 or proprietary interfaces.
❗ Verify REX010 and earth-fault scheme. 100% stator/rotor earth-fault protection may depend on external injection units and auxiliary circuits.
❗ Check differential CT circuits. Generator and transformer differential protection requires correct CT polarity, ratio and secondary wiring.
❗ Plan successor migration carefully. REG216 is a legacy system; replacement with REG216C, Relion generator protection relays or other IEDs requires engineering review of I/O, protection logic and communication.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| ABB | ABB | Direct | Match version, I/O modules, firmware and settings. |
| ABB | ABB REG216 Classic | Needs Verification | Different I/O assemblies; wiring and logic must be checked. |
| ABB | ABB REG216C / Relion generator relay | Needs Verification | Successor path; confirm I/O, differential CTs and communication. |
| ABB | Generic generator protection relay | Needs Verification | Requires full engineering review of protection scheme and SCADA. |
Benchmarks:
- ABB REG216 digital generator-transformer protection system.
- Supports differential, overcurrent, earth-fault, reverse power, voltage, frequency and loss-of-excitation protection with modular I/O and disturbance recording.
- Legacy product; REG216C and Relion generator protection relays are typical successors.
If you can share the nameplate photo, installed module list or existing protection settings, I can help confirm the exact REG216 variant and the most suitable replacement path.
