ABB REF630 Overcurrent and Earth-Fault Protection Unit
Manufacturer: ABB
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Part Number: REF630
Condition：New with Original Package
Product Type: Feeder Protection Relays
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The ABB REF630 serves as a high-performance feeder management powerhouse within the Relion® 630 product family. Designed for utility and industrial power distribution, this relay provides comprehensive protection, control, measurement, and supervision of medium-voltage feeders. We supply this unit as 100% Brand New and Original, ensuring your digital substation benefits from advanced fault location and seamless SCADA integration.
Technical Specifications
The REF630 features a modular hardware design to accommodate diverse substation requirements:
| Feature | Specification |
| Series | Relion® 630 |
| Protection Functions | Overcurrent, Earth-Fault, Thermal Overload, Voltage/Frequency |
| Control Functions | Feeder Bay Control, Breaker Monitoring, Trip-Circuit Supervision |
| Measurement | Current, Voltage, Frequency, Power, Energy |
| Communication | IEC 61850, Modbus, DNP3, SPA, LON, Profibus |
| Storage | Disturbance Recorder, Fault Location Logs, Event History |
| Power Supply | 24–250 V DC / 100–240 V AC (Configuration Dependent) |
| Operating Temp | –40 °C to +85 °C |
| Weight | 3.0 – 4.0 kg |
Engineering Advantages
The REF630 optimizes grid stability by solving complex protection and communication challenges:
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Digital Substation Readiness: The relay natively supports IEC 61850, including high-speed GOOSE messaging. This allows the REF630 to execute horizontal communication between relays, eliminating miles of copper hardwiring and reducing commissioning costs.
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Integrated Bay Control: Beyond protection, the REF630 controls circuit breakers and disconnectors directly from its local HMI or remotely. This integration reduces the total device count in the switchgear panel, simplifying the overall secondary system design.
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Advanced Fault Localization: Built-in disturbance recorders and fault-location algorithms identify the exact distance to a feeder fault. This precision allows repair crews to bypass manual inspections and restore power faster, significantly improving SAIDI and SAIFI metrics.
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Extreme Environmental Endurance: With an operating range of –40 °C to +85 °C, the hardware functions reliably in unheated outdoor kiosks or high-temperature industrial environments without auxiliary cooling.
FAQs
Q: Can the REF630 handle feeders with distributed renewable energy sources?
A: Yes. The REF630 includes specific voltage and frequency protection elements that manage the bidirectional power flows and stability requirements typical of networks containing solar, wind, or other distributed generation.
Q: How does the relay simplify troubleshooting after a trip?
A: The REF630 records comprehensive disturbance logs and event sequences. You can extract these files via the communication port to analyze waveforms and identify the precise sequence of events leading to the trip.
Q: Is the REF630 compatible with legacy communication protocols?
A: Absolutely. While optimized for IEC 61850, the relay also supports Modbus, DNP3, Profibus, SPA, and LON, allowing you to integrate it into existing brownfield substations without replacing the entire network infrastructure.
Q: Does the module support trip-circuit supervision (TCS)?
A: Yes. The REF630 constantly monitors the integrity of the breaker trip circuit in both open and closed positions, alerting operators immediately if a wiring break or loss of supply occurs.