Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | ABB REG670 |
| Brand | ABB |
| Product Type | Generator Protection IED |
| Product Series | Relion 670 series |
| Application | Generator and generator-transformer protection |
| Hardware Platform | Scalable, modular Relion 670 platform |
| Local HMI | Graphical display with programmable function keys and LEDs |
| Binary I/O | Configurable binary inputs and outputs |
| Analog Inputs | Current transformer (CT) and voltage transformer (VT) inputs |
| IEC 61850 | Supported, Edition 1 and Edition 2 |
| GOOSE | Supported for fast peer-to-peer communication |
| IEC 60870-5-103 | Supported |
| DNP 3.0 | Supported |
| Modbus | Modbus RTU / TCP supported |
| Auxiliary Supply | Configurable DC supply ranges, including 24-60 VDC, 48-125 VDC, and 110-250 VDC |
| Protection Functions | Generator and transformer differential, stator and rotor earth-fault, out-of-step, overexcitation, underexcitation, thermal overload, reverse power, and low forward power |
| Origin | ABB product platform; exact manufacturing origin depends on order configuration |
ABB Relion 670 Protection and Communication
The REG670 accepts measured current and voltage signals from CT and VT circuits. It then applies configured protection algorithms to generator and generator-transformer electrical quantities.
The relay supports differential protection, earth-fault protection, out-of-step protection, excitation-related protection, thermal protection, and power-direction functions. Therefore, the final protection configuration depends on the selected application and engineering settings.
For station-level communication, the REG670 supports IEC 61850 with GOOSE messaging. It also supports IEC 60870-5-103, DNP 3.0, and Modbus RTU / TCP interfaces. These protocols provide interfaces for protection coordination, supervision, measurement, and control data exchange.
ABB also uses modular I/O architecture in the Relion 670 platform. Consequently, the installed binary and analog I/O arrangement depends on the configured hardware variant.
Frequently Asked Questions
Q: Does the REG670 support IEC 61850 communication?
A: Yes. The supplied specification identifies IEC 61850 Edition 1 and Edition 2 support, including GOOSE messaging.
Q: Which electrical measurement inputs does the REG670 use?
A: The supplied data identifies analog inputs for standard CT and VT measurement circuits, together with configurable binary I/O.
Q: Can the REG670 use different auxiliary DC supply ranges?
A: Yes. The supplied configuration information lists 24-60 VDC, 48-125 VDC, and 110-250 VDC supply options. The exact range depends on the ordered hardware variant.
Field Installation Guidelines
- Verify the complete REG670 order code before installation because hardware configuration determines available I/O and auxiliary supply characteristics.
- Confirm CT and VT circuit wiring against the approved protection schematic before energizing measurement inputs.
- Maintain correct CT polarity and phase identification throughout the protection circuit.
- Separate CT, VT, binary control, and communication wiring according to the site wiring standard.
- Route communication cables separately from high-current power conductors where practical to reduce electromagnetic coupling.
- Terminate cable shields according to the project grounding design and the applicable ABB installation documentation.
- Confirm the auxiliary DC voltage range against the relay nameplate before applying power.
- Verify IEC 61850 network addressing, VLAN configuration, and GOOSE subscriptions before placing the protection scheme into service.
- Perform secondary injection and functional testing after wiring verification and before connecting the relay to an energized protection system.
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