ABB REF615E_H feeder protection relay Relion® 615 Series

Here's the technical specification for ABB REF615E_H - the high-precision feeder protection relay optimized for sensitive fault detection in critical distribution networks:

ABB REF615E_H

High-Precision Feeder Protection Relay

*(Relion® 615 Series | "H" = High-Accuracy Measurement)*

Order Code: 1MRK 002 232-BEN

1. Core Identity

Hardware Platform: REF615E

Suffix "H": Equipped with High Core CTs (HCTs) for ±0.2% current measurement accuracy

Key Innovation: 64 samples/cycle sampling for arc fault detection and waveform analysis

Primary Role: Sensitive protection of critical feeders (cables, generators, industrial loads)

2. Key Protection Functions

Function Technical Scope

Feeder Differential (87L) Fiber-optic based (<5 ms operation) via direct relay-to-relay communication

Directional OC/EF 67/67N with 0.5° polarization accuracy

Arc Flash Detection Light sensor input + di/dt algorithm (optional)

Advanced Metering IEEE C37.118 synchrophasors (PMU functionality)

Auto-reclose (79) 4-shot adaptive reclosing with dead-line/bus logic

3. "H" Variant Distinctions

Feature REF615E_H REF615E_G

CT Accuracy ±0.2% (HCTs) ±0.5% (standard CTs)

Sampling Rate 64 samples/cycle 32 samples/cycle

Harmonic Analysis Up to 63rd order Up to 31st order

Fault Location ±0.5% accuracy ±1% accuracy

Price Premium ~20% higher Base model

4. Technical Specifications

Parameter Specification

Differential Protection Operate time: <8 ms (87L via fiber)

I/O Configuration 24 DI / 16 DO + 2 analog inputs (4-20mA) + 1 arc sensor input

Communication 2× 100BASE-FX optical ports (IEC 61850-9-2LE) + 2× Ethernet (GOOSE/MMS)

Standards IEC 60255-149 (PMU), IEEE C37.238 (time sync), IEC 62443-3-3 (cybersecurity)

Operating Temp -40°C to +85°C (full accuracy maintained)