Section 2 REC615 and RER615 overview
2.1 Overview
REC615 and RER615 relays are designed for remote control and monitoring,
protection, fault indication, power quality analysis and automation in medium-
voltage secondary distribution systems. The design of the relays has been guided by
the IEC 61850 standard for communication and interoperability of substation
automation devices.
The relays feature a draw-out-type design with a variety of mounting methods,
compact size and ease of use. Depending on the product, optional functionality is
available at the time of order for both software and hardware, for example,
autoreclosing and additional I/Os.
REC615 and RER615 relays support a range of communication protocols including
IEC 61850 with Edition 2 support, process bus according to IEC 61850-9-2 LE, IEC
60870-5-101/104, Modbus® and DNP3.
2.1.1 Product series version history
Product series version
Product series history
1.0 REC615 released with configurations A, B and C
RER615 released with configurations A and D
1.1 • Fault locator
• Transient/intermittent earth-fault protection
• Operation time counter
• Automatic transfer switch
• Supervision of voltage presence status
2.0
New configurations
• REC615: E, F and G
• RER615: E
• Multifrequency admittance-based earth-fault protection
• Loss of phase (undercurrent)
• Single-phase power and energy measurement
• Daily timer function
• Three-phase power directional element
1MRS758755 A Section 2
REC615 and RER615 overview
REC615 and RER615 29
Technical Manual
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