REF615 is a digital feeder protection and measurement & control device manufactured by ABB:
Protection Functions
- Provides directional and non – directional overcurrent protection, ground fault protection, voltage/frequency/power – based protection, etc., offering comprehensive protection for power system feeders.
- Example: Overcurrent protection quickly responds to current overloads, while ground fault protection accurately detects ground faults and takes action.
Measurement Functions
- Real – time monitoring of electrical parameters such as current, voltage, and power, providing data support for performance evaluation and maintenance of power systems.
- Example: Voltage parameters are monitored in real time to promptly identify abnormal voltage fluctuations.
Communication Protocols
- Supports IEC 61850 versions 1 and 2 (including HSR, PRP, GOOSE messaging, and IEC 61850 – 9 – 2 LE), IEEE 1588 V2, Modbus, DNP3, and IEC 60870 – 5 – 103, enabling data exchange with various devices or systems for remote monitoring and control.
Electrical Interfaces
- Data Electrical Interface: 9 – pin Sub – D jack connector, with pin definitions compliant with the Profibus DP protocol specification.
- Profibus DP Support: Communication rates include 9.6 kBit/s, 19.2 kBit/s, 45.45 kBit/s, 93.75 kBit/s, 187.5 kBit/s, 500 kBit/s, 1.5 Mbit/s, 6 Mbit/s, and 12 Mbit/s.
- Protective Features: 4000 V lightning protection, 1.5 A overcurrent protection, and 600 W surge protection.
Power Supply
- Wide Redundant Dual Power Supply: DC9 – 36V, with DC1500V power isolation and reverse polarity protection.
- Typical Operating Voltage: DC24V, with a power consumption of less than 4W.
Mechanical Characteristics
- Protection Level: IP30.
- Enclosure: Corrugated aluminum reinforced casing.
- Installation: Standard industrial 35mm rail mounting.
- Dimensions: Approximately 25cm (length) × 31cm (width) × 65cm (height).
- Weight: Approximately 2.9kg.
Other Functions
- Large Graphic Display: Capable of showing customizable single – line diagrams (SLD), accessible locally or via a web browser – based human – machine interface (HMI).
- Event Recording and Alarming: Records system events and fault conditions and generates alarm information.
- Adaptive Protection Strategy: Automatically adjusts protection parameters according to the operating conditions and changes of the power system.
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