Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Model | REF615E_1G |
| Ordering Code | H-B-F-N-AE-AG-A-N-B-1-A-N-A-1-1G |
| Series | Relion 615 |
| Product Type | Feeder protection and control relay |
| Main Application | Overhead lines and cable feeders |
| Protection Functions | Directional overcurrent, directional earth fault, voltage, frequency, synchro-check, circuit breaker condition monitoring |
| Analog Inputs | 4 current inputs and 5 voltage inputs |
| Binary Inputs / Outputs | 16 binary inputs and 10 binary outputs |
| Communications | RS-485, Ethernet 100Base-TX, Modbus |
| Supply Voltage | 48 to 250 V DC; 100 to 240 V AC |
| Product Version | 5.0 FP1 |
Product Introduction & Supply Chain Strategy
ABB REF615E_1G H-B-F-N-AE-A-N-B-1-A-N-A-1-1G is a feeder protection and control relay for utility and industrial power distribution systems. ABB describes REF615 as a dedicated feeder relay for protection, control, measurement, and supervision of overhead lines and cable feeders.
From a supply-chain perspective, this is a good candidate for New Surplus buffer stock when you need continuity across an installed feeder fleet. It reduces lead time variability, lowers the risk of protection-device stock-outs, and avoids the hidden TCO penalty of scrambling for last-minute replacements.
Installation & Configuration Guide
Stage 1: Pre-Installation
Lock out and tag out the switchgear before any work begins. Use an ESD wrist strap, insulated hand tools, and a camera to record terminal wiring, setting groups, and communication labels. Confirm the CT/VT ratios, bay logic, and exact order code before removal.
Stage 2: Removal
De-energize the bay unless your site procedure explicitly permits live replacement. Release the relay evenly and pull it straight out to avoid stressing connectors or adjacent terminal blocks. Do not force the unit if cable slack or panel trim is limiting movement.
Stage 3: Installation
Replicate the original settings exactly, including protection curves, I/O mapping, and communication addresses. Seat the relay fully and secure it per the withdrawable or panel hardware sequence. Reconnect wiring only after confirming terminal numbers and wiring diagrams match the original record.
Stage 4: Power-On & Testing
Restore auxiliary power and verify the supply is stable before commissioning. Check the display, LEDs, and event logs, then perform secondary injection or functional testing if required by your procedure. Verify trip circuits, interlocks, and communications before returning the feeder to service.
- REF615E_1G H-B-F-N-AE-AG-A-N-B-1-A-N-A-1-1G
- REF615E_1G H-B-F-N-AE-AG-A-N-B-1-A-N-A-1-1G
Firmware/Software Versions & Upgrade Notes
The available reference data points to REF615 Product Version 5.0 FP1 for this ordering structure, but the exact firmware baseline still depends on the installed relay and project environment. The safest replacement method is a like-for-like swap that preserves the existing firmware and settings set before energizing.
Avoid upgrading or downgrading firmware during the hardware swap unless ABB compatibility data for your exact station architecture confirms it. A mismatch can change protection behavior, communication performance, or downloaded settings, which is unacceptable in a feeder application.
Frequently Asked Questions
Is this really new?
Yes, the correct procurement position is New Surplus / Original New, not refurbished. That means traceable OEM inventory, intact packaging, and QC verification before shipment.
Why is it cheaper than OEM new but higher than refurb?
New Surplus usually comes from excess OEM inventory or controlled release stock. It prices below OEM list, but above lower-traceability inventory because it carries better risk control.
Is REF615 still active?
Yes, ABB still presents REF615 as a current feeder protection family. The exact order code still needs configuration verification before purchase.
Can I hot-swap it?
Only if your switchgear design and site procedure explicitly allow it. For most feeder protection applications, plan a controlled outage and follow your commissioning checklist.
Will my settings stay intact?
Do not assume retention without verification. Back up the relay settings, communication parameters, and setting groups before removal, then confirm them after installation.
What warranty should I expect?
Warranty terms depend on the supplier and QC package. For New Surplus protection relays, ask for serial traceability, test records, and a written warranty period tied to shipment.
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