Product Core Brief
- Full Model: REF615C_C
- Complete Order Code: HCFFAEAGANB2BAN1XC
- Brand: ABB
- Series: Relion® 615 series distribution feeder protection intelligent electronic device (IED)
- Core Function: All-in-one protection, control, measurement, fault recording and substation communication IED for 3–35 kV radial, ring, mesh distribution feeders (cable / overhead lines) with distributed generation support. Executes main feeder primary protection, backup transformer protection, breaker control and fault location.
- Product Type: Draw-out pluggable numerical protection relay (flush/semi-flush panel mounting)
- Key Specs: Full directional phase & earth fault protection suite | Dual 10/100M Ethernet IEC61850 (GOOSE/MMS) | Modbus RTU/TCP / DNP3 / IEC103 multi-protocol | Graphical SLD LCD front panel | Extensible binary I/O | Built-in auto-reclose, arc flash detection, fault locator ⚠️ Mature EOL product, limited surplus stock available
Product Introduction
The ABB REF615C_C HCFFAEAGANB2BAN1XC belongs to ABB Relion 615 feeder protection family, widely deployed in utility distribution substations, industrial power plants, mining and oil & gas MV switchgear roomsABB Group.Its draw-out pluggable design allows fast replacement without CT circuit disconnection; integrated graphical human-machine interface (HMI) displays single-line diagrams, fault records, metering values locally or via web browser remote access.This unit differs from compact REF610 by expanded directional earth fault algorithms (admittance-based sensitive earth fault SEF), arc fault detection and dual redundant Ethernet for station bus redundancy (PRP/HSR). The ordering string defines its CT rating, I/O quantity, communication ports, supply voltage, display and optional function packages pre-configured at factory. OEM field logging records a 62,000 hour MTBF under continuous 50 °C substation cabinet runtime.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Application Scope | 3–35 kV overhead / cable feeders, ring/mesh networks, distributed generation interconnection, backup transformer protection |
| CT Secondary Rating | Software selectable 1 A / 5 A phase CT; optional sensitive earth 0.2 A CT input |
| VT Input (Optional) | 100 V / 110 V / 230 V secondary voltage measurement |
| Protection Function Suite | 3-stage directional/non-directional overcurrent (50/51/67); multi-stage directional earth fault (67N); admittance SEF; thermal overload; negative sequence; breaker failure; auto-reclose; arc flash detection; fault locator; under/over voltage/frequency protection |
| Binary I/O (Configured per ) | 11 programmable binary inputs; 10 programmable binary outputs (including trip-circuit monitored breaker trip contacts, alarm Form-C contacts) |
| Communication Interfaces | Dual isolated 10/100 Mbps Ethernet (IEC61850 Ed1/Ed2, GOOSE peer-to-peer, PRP/HSR redundancy); RS485 Modbus RTU; supports Modbus TCP, DNP3 Level2, IEC60870-5-103 |
| Operating Auxiliary Supply | Wide-range DC 24 / 48 / 110 / 220 V; AC 110–240 V 50/60 Hz (order code defines supply variant) |
| HMI Display | Color graphical LCD, customizable SLD single-line diagram, event fault oscillography storage, local keypad operation |
| Mechanical Form Factor | Draw-out pluggable unit; flush/semi-flush panel mounting; front IP54, rear terminals IP20 |
| Mechanical Dimensions | Front panel 177 mm × 177 mm; depth 155 mm; total unit weight ~2.5 kg |
| Operating Ambient Temp | Continuous -25 °C ~ +55 °C; short-term -40 °C ~ +85 °C (<16h) |
| Storage Temperature | -40 °C ~ +85 °C, 5%–93% RH non-condensing |
| Data Recording | Fault oscillography, event log, disturbance recorder, maximum demand energy metering |
| Tool Software | PCM600 for parameter setting, commissioning, fault data retrieval; built-in web server remote monitoring |
| Integrated Protection Circuits | CT overvoltage suppression, binary input surge clamping, trip output coil transient suppression, internal watchdog self-test alarm |
| Certifications | IEC 60255, IEEE C37.90, UL, CE, RoHS, EN61000 Class A substation EMC filtering |
Quality Control Process
- Incoming Verification: Cross-reference serial number and full ordering code against ABB Relion OEM trace databases; inspect LCD display for dead pixels, front keypad integrity, dual Ethernet RJ45 ports for pin bending, draw-out CT shorting mechanism functionality, terminal block screw threads for corrosion. Photograph front SLD display layout and rear I/O terminal mapping for substation commissioning reference.
- Live Functional Test: Insert pluggable unit into standard REF615 test chassis; connect programmable CT/VT signal simulators, binary input dry contact banks and trip output load resistors; run continuous 24-hour cyclic protection characteristic test, simulate phase short-circuit, earth fault and arc flash events to verify accurate tripping sequence and fault recording. Log auxiliary supply voltage stability with Fluke 115 multimeter for full test duration.
- Electrical Parameter Test: Perform 2 kV Megger insulation resistance test between all CT/VT field circuits and relay chassis ground; pass threshold >100 MΩ. Verify dual Ethernet seamless PRP redundant bus switchover with zero GOOSE message loss upon single network cable disconnection. Validate auto-reclose multi-shot sequence timing accuracy.
- Firmware & Communication Verification: Read factory REF615 firmware revision via PCM600 software; document default IEC61850 logical node mapping, Modbus baud rate and protection curve setting templates for site commissioning reference. Test peer-to-peer GOOSE interlocking between two REF615 IEDs.
- Final QC & Packaging: Clean front LCD panel and Ethernet ports; seal IED inside anti-static foam sleeve; attach dated QC Pass label listing protection characteristic, insulation, communication redundancy and fault recording test metrics before shock-resistant carton shipping packaging.
Replacement Pitfall Guide
❗ ❗ Draw-Out Unit Partial Insertion Risk: Incomplete plug-in seating breaks CT shorting contacts and creates high-resistance analog measurement paths, leading to distorted current/voltage readings, false protection tripping or failure to trip during real feeder faults. Push unit fully into chassis until front locking latches click and CT shorting indicator shows closed status during maintenance extraction.❗ Ethernet/Modbus Cable Shield Ground Misconfiguration Risk: Unshielded CAT6 Ethernet or RS485 wiring routed parallel to high-current MV breaker cables generates severe 50/60 Hz EMI noise, causing intermittent GOOSE message loss and remote DCS metering dropout. Use factory shielded fieldbus cable assemblies; terminate shield ground at only substation control cabinet terminal block single point grounding.❗ Substation Cabinet Auxiliary Power Headroom Miscalculation Risk: A panel loaded with six REF615C IEDs draws ~120 W total maximum DC load. Calculate total cabinet auxiliary supply load with mandatory 20% power margin to avoid voltage sag during simultaneous fault tripping surge current transients.❗ Uncontrolled ESD Damage Risk: Dry substation control room air builds high static charge rapidly. Touch grounded anti-static mat for three full seconds before handling rear CT/VT terminal blocks and Ethernet communication ports; ungrounded contact will damage low-tolerance analog signal sampling ASICs and dual Ethernet transceivers.Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
Compatibility Matrix
- Lower-spec REF610 feeder IED → REF615C_C : Needs Adaptation — missing directional earth fault admittance algorithm, dual Ethernet and arc flash hardware; full protection scheme redesign required
- ABB COM600 substation gateway → REF615C : Direct — exchanges IEC61850 MMS and Modbus TCP metering/fault data with station HMI
- ABB CI854 PROFIBUS DP communication module (System800xA) → REF615C : Direct — IED RS485 Modbus RTU connects to CI854 PROFIBUS slave gateway for DCS data upload
- VM310 24 V DC cabinet auxiliary power supply → REF615C : Direct — wide-range DC input matches 24 V nominal auxiliary supply without extra voltage conditioning
- ABB UNITROL generator excitation system (HIEE300890R0001 UAC383) → : Needs Adaptation — Modbus TCP gateway required to exchange generator voltage/frequency interlock signals between excitation cabinet and distribution feeder IED
- CML40.2-SP-330-NA-NNNN-NW Rexroth SERCOS motion PLC → : Needs Adaptation — wire relay fault/trip binary dry contacts to PLC digital inputs; map feeder current/voltage registers via Modbus RTU polling
