ABB REF615C-E – Feeder Protection and Control Relay Product Overview

Description

1. Technical Specifications

• Rated Auxiliary Supply: 100 – 240 V AC or 48 – 250 V DC, 50/60 Hz ±10 %
• Current Inputs: 1 A or 5 A, burden < 0.1 VA
• Voltage Inputs: 57.7 – 220 V AC, burden < 0.1 VA
• Power Consumption: < 10 W
• Operating Temperature: –40 °C to +70 °C
• Storage Temperature: –40 °C to +85 °C
• Enclosure: IP20, panel flush mount, dimensions 233 mm × 160 mm × 280 mm, mass 1.24 kg
• Display: 2×16 character LCD, navigation keypad, eight programmable LEDs
• Communication Ports:
  – Ethernet 10/100 Base-T (RJ-45)
  – RS-485 (Modbus RTU, IEC 60870-5-103)
  – Optional fiber optic Ethernet for PRP/HSR redundancy

3. Protection Functions

• Directional / non-directional overcurrent (50/51/67)
• Earth-fault protection with multi-frequency admittance, watt-metric and harmonic restraint methods
• Thermal overload (49)
• Over-/under-voltage, residual overvoltage (59/27/59N)
• Over-/under-frequency (81)
• Phase unbalance, negative-sequence protection (46)
• Arc-flash protection (optional sensor interface)
• Circuit-breaker failure (50BF) and trip-circuit supervision

4. Measurement & Monitoring

• Real-time RMS values: U, I, P, Q, S, PF, f, harmonics up to 15th
• Fault recorder (8 s pre-fault, 16 s post-fault) and 1 ms SOE log
• Power-quality indices: THD, sag/swell, flicker

5. Communication & Integration

• Protocols: IEC 61850 Ed. 1 & 2 (GOOSE, Sampled Values), Modbus TCP/RTU, DNP3 serial/TCP
• Time synchronization: IEEE 1588 v2, SNTP, IRIG-B
• Engineering tool: PCM600 for parameters, logic and single-line diagram import

6. Functional Highlights

• Hot-swappable terminal blocks and firmware update without outage
• Configurable logic via graphical function blocks
• Self-diagnostics with alarm annunciation and health LED
• Optional arc-flash sensor interface for enhanced personnel safety

7. Application Scenarios

• Public and industrial distribution networks: switchgear, ring-main units, compact substations
• Process plants: motor, pump, compressor and conveyor protection
• Renewable integration: solar and wind farm feeders, energy-storage interconnection
• Commercial buildings: high-rise power distribution and generator backup protection
• Transportation: traction substations and EV charging infrastructure