ABB|REU615|Protection and Control Relay

ABB REU615 Voltage Protection and Control Relay

Description
The ABB REU615 is a compact, withdrawable voltage protection and control relay from the Relion® 615 series, designed for utility and industrial power systems.

Features

• Voltage and frequency protection
• Automatic voltage regulation
• IEC 61850 communication support
• Local and Web HMI for control
• Optional arc protection and RTD/mA inputs

Technical Specifications

Protection Functions

• Three-phase overvoltage: 3 stages, 59 (PHPTOV)
• Three-phase undervoltage: 3 stages, 27 (PHPTUV)
• Residual overvoltage: 3 stages, 59G (ROVPTOV)
• Frequency protection: 6 stages, 81 (FRPFRQ)
• Load-shedding: 5 stages, 81LSH (LSHDPFRQ)

Control and Monitoring

• Circuit-breaker control: 1 instance (CBXCBR)
• Disconnector control: 2 instances (DCXSWI)
• Tap changer control: 1 instance, 90V (OLATCC)
• Trip circuit supervision: 2 instances (TCSSCBR)
• Disturbance recorder: 1 instance (RDRE)

Inputs/Outputs

• Analog inputs:
  • 5 VT (Configuration A)
  • 4 CT + 3 VT (Configuration B)
• Binary inputs:
  • 12 (Configuration A)
  • 14 (Configuration B)
• Binary outputs:
  • 10 (Configuration A)
  • 13 (Configuration B)
• RTD/mA inputs (optional, Configuration B):
  • 6 RTD + 2 mA

Communication

• Protocols: IEC 61850, Modbus, DNP3, IEC 60870-5-103
• Ethernet: RJ-45 (100Base-TX), fiber-optic LC (100Base-FX)
• Time synchronization: IEEE 1588 v2
• Clients supported: 5 simultaneous

Hardware

• Display:
  • Small (5 rows, 20 chars)
  • Large (10 rows, 20 chars)
• LEDs: 11 programmable, red/green
• Power supply:
  • 48–250 V DC
  • 100–240 V AC
  • 24–60 V DC
• Binary input threshold: 16–176 V DC