ABB REC615E_H Relion® 615 Series Feeder Protection & Control Relay

1. Core Identity

Series: Relion® 615

Hardware Platform: REC615E

Suffix "H": Denotes high-precision analog inputs (HCTs) for sensitive measurements.

Primary Role: Feeder/bay control + advanced protection for distribution networks.

2. Key Functions

Category Functions

Protection - Distance protection (Zones 1–4)

- Directional/non-directional overcurrent (50/51, 50N/51N)

- Earth fault protection (67N, 50G/51G)

- Autoreclosing (79)

- Breaker failure (50BF)

- Thermal overload (49)

Control - IEC 61850-compliant bay control (switchgear control, interlocking)

- Logic programmable via PCM600

Measurement - High-accuracy synchrophasors (PMU support, IEEE C37.118)

- Power quality monitoring (harmonics, flicker)

Automation - GOOSE-based inter-tripping

- Load shedding

- Sectionalizing schemes

3. "H" Variant Distinction

High Core CTs (HCTs):

±0.2% current measurement accuracy (vs. ±0.5% in standard "G" models).

Critical for schemes requiring precision:

Differential protection (87L) for short feeders/cables.

Sensitive directional earth fault detection.

Enhanced Sampling:

64 samples/cycle for detailed waveform analysis.

4. Technical Specifications

Parameter Specification

I/O Configuration - 24 digital inputs

- 16 programmable outputs

- 4 analog inputs (mA/V)

Communication - 2× Ethernet ports (IEC 61850-8-1 Ed.2, MMS/GOOSE/SV)

- 2× optical ports (ST connector)

- RS485 (Modbus RTU, IEC 60870-5-103)

Protocols IEC 61850, DNP3.0 TCP, Modbus TCP, IEC 60870-5-104

Standards IEC 60255, IEEE C37.90 (EMC), IEC 61000-4-4/4-5 (Surge/EFT immunity)

Ordering Code 1MRK 511 358-BEN (verify with datasheet)