Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | REF615C_E HCFEAEAGABC2BAA11E |
| Product Type | Feeder Protection & Control Relay |
| Series | ABB Relion® 615 |
| Application | Medium-voltage feeder protection |
| Auxiliary Supply | 24–250 V AC/DC |
| CT Inputs | 1 A / 5 A configurable |
| Protection Functions | Overcurrent, Earth Fault, Thermal Overload, Breaker Failure, Voltage & Frequency Protection |
| Communication | IEC 61850, Modbus, DNP3 |
| HMI | Graphic LCD with keypad |
| Installation | Withdrawable flush-mounted unit |
| Operating Temperature | Typically -25 °C to +55 °C |
| Standards | IEC 60255, IEC 61850 |
Product Introduction
The ABB REF615C_E HCFEAEAGABC2BAA11E is a multifunction feeder protection and control relay designed for medium-voltage distribution systems. As part of the Relion® 615 family, it combines protection, measurement, monitoring, breaker control, and communication in a single Intelligent Electronic Device (IED).
It is widely deployed in utility substations and industrial power systems where selective feeder protection, fast fault isolation, and IEC 61850 interoperability are required. The withdrawable hardware design simplifies maintenance while supporting integration with modern substation automation systems.
- REF615C_E HCFEAEAGABC2BAA11E
- REF615C_E HCFEAEAGABC2BAA11E
- REF615C_E HCFEAEAGABC2BAA11E
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Relay completely dead | Auxiliary power missing | ❌ Low | Measure auxiliary supply (24–250 V AC/DC) at power terminals | Verify power source before replacing relay |
| LCD active but breaker will not trip | Output contact or wiring issue | ⚠️ Medium | Check trip output with secondary injection test | Verify breaker trip circuit |
| Protection alarm appears unexpectedly | Incorrect CT ratio or settings | ❌ Low | Compare CT ratio and protection settings with commissioning records | Correct configuration before replacing hardware |
| IEC 61850 communication lost | Network or switch failure | ❌ Low | Verify Ethernet link LEDs and GOOSE traffic | Check network infrastructure first |
| Self-supervision alarm | Internal hardware fault | ✅ High | Read relay diagnostics using PCM600 | Hardware repair or replacement is usually required |
| Relay repeatedly restarts | Internal power supply degradation | ✅ High | Monitor auxiliary voltage under load | Replace relay if supply is stable |
| Breaker failure function not operating | Configuration mismatch | ⚠️ Medium | Verify breaker failure logic and binary inputs | Review application configuration |
Service Note
In actual substations, the relay itself is not usually the first component to fail. Incorrect CT polarity, damaged trip circuits, auxiliary power problems, or configuration errors account for many service calls. Before ordering a replacement, export the event log, disturbance records, and settings file from PCM600. Photos of the relay display and wiring often save hours of troubleshooting.
Frequently Asked Questions (FAQ)
1. Is the REF615C_E HCFEAEAGABC2BAA11E still manufactured?
This configuration belongs to the earlier Relion® 615 generation and is generally considered obsolete or approaching end-of-life. Most available units come from surplus inventory or professionally refurbished stock.
2. Can I replace another REF615 relay with this exact model?
Not always. The long order code () defines hardware options, protection functions, communication interfaces, binary I/O, and auxiliary voltage. Always compare the complete order code before purchasing.
3. Can this relay be hot-swapped?
No. De-energize the protection panel before removing the withdrawable unit. Pulling the relay under power can interrupt protection functions and create unnecessary operational risk.
4. Does it support IEC 61850?
Yes. This relay supports IEC 61850 substation communication along with protocols such as Modbus and DNP3, depending on the ordered hardware configuration.
5. Why should I back up the relay before replacement?
I’ve seen maintenance teams replace a healthy relay only to discover the original settings file was never saved. Without the protection settings, commissioning can take far longer than the hardware replacement itself. Always save the PCM600 project, event logs, and disturbance records before removal.
6. Why are New Surplus units less expensive than factory-direct products?
New Surplus relays are genuine ABB devices that were never commissioned but remained in distributor or project inventory. They typically provide OEM hardware at a lower cost because they are no longer supplied through the standard manufacturing channel.
7. What warranty is typically available?
Most reputable industrial automation suppliers provide a 12-month warranty on New Surplus or fully tested refurbished REF615 relays. Ask for the functional test report, firmware version, and communication verification before shipment.
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