ABB REF620E_F NBFNAANNNCC1BNN1XF | IEC 61850 Feeder Relay

Description

Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.

3. Product Introduction

Feeder protection lives or dies on selectivity, and the REF620E_F is built to hold that line — overcurrent, earth fault, breaker failure, and reclosing in one drawout case. It sits in a switchgear panel, takes CT and VT inputs from the feeder, and trips the breaker through its binary outputs. The long order-code string decides what you actually get: communication module, binary I/O count, and language pack all come from those characters. Read the whole code against the OEM order-code table before you buy, not just “REF620.”

REF620E_F

REF620E_F

REF620E_F

REF620E_F

4. Key Technical Specifications

5. Field Application & Technical Pitfalls (The Engineer’s Guide)

Where this relay is critical:

• Medium-voltage distribution feeders in industrial plants where a trip must isolate the faulted section without dropping the whole bus.
• Utility and captive substations running IEC 61850 station buses, where the relay must publish GOOSE and report to the gateway.
• Motor and transformer feeders that need directional earth fault and breaker failure logic in the same package.

Three pitfalls that bite during replacement:

• Order code and fitted option mismatch. Warning: “REF620” alone tells you almost nothing. Two relays with the same first characters can differ in communication module, binary I/O count, and language. A unit that boots and shows measurements can still lack the Ethernet port your station bus expects. Compare every character against the old label and the OEM order-code table.
• Settings file, firmware, and relay identity. Warning: load the site’s PCM600 project file and verify the relay’s protection functions are licensed before you energize the trip circuits. A replacement with newer firmware can reject the old settings file or silently change a function’s behavior. Also confirm the relay’s technical key and station communication addresses, because the gateway will not accept a duplicate or mismatched identity.
• CT/VT wiring, test switch, and trip circuit isolation. Warning: never work on CT circuits with the primary energized — an open CT secondary develops dangerous voltage. Use the test switch to isolate trip outputs before testing, and verify CT polarity and ratio against the drawing. A reversed CT pair turns a forward fault into a reverse decision and defeats the directional element.

Lesson learned: A crew replaced a failed feeder relay with a spare that carried the right protection functions but a different communication module. The panel energized fine, the local display looked normal, and the station bus reported the relay as missing for two days. Root cause — nobody read past “REF620” in the order code. The relay was good; the option string was not.

6. Quality Control (QC) SOP & Transparency

1. Inbound Verification. Each relay is checked against the OEM packing list, label typography, serial number format, and date-code range. The full order code is logged and decoded so the fitted options are documented before the unit enters stock.
2. Live Rig Testing. The relay is powered on the bench at rated auxiliary supply, connected to PCM600, and checked for relay identity, firmware revision, and installed function set. Binary inputs and outputs are exercised where the test fixture supports them.
3. Parameter Testing. Auxiliary supply current draw, binary output continuity, and CT/VT input circuit checks are performed per the OEM commissioning guidance where published. Undocumented values are flagged for buyer confirmation rather than guessed.
4. Final QA & Packaging. The relay ships in protective packaging with a QC-passed label, a test record showing the firmware revision and decoded order code we verified, and photos of the terminal and communication module layout when available.

7. Frequently Asked Questions (FAQ)

Can I swap this relay with the switchgear energized? No. Isolate the trip circuits and auxiliary supply first, and use the test switch to block tripping. Then confirm CT circuits are shorted or isolated before you touch the terminals.

How do I confirm the order code matches my existing relay? Send the label photo from the old unit plus your PCM600 project file name. We decode the option characters and cross-check the test record before shipping. Exact fit depends on the whole string, not just the REF620 family name.

What’s the warranty? 12 months from delivery for functional failure under normal operation. Communication modules and other accessories, if supplied separately, carry a 90-day replacement guarantee.

How can I tell genuine OEM from refurbished? Genuine units carry the original ABB label with consistent typography and a traceable serial number. Refurbished units carry our QC tag in addition to the OEM label, and we disclose condition on the quote.

Does it ship with a settings file or license? No. We ship a test record, not your protection settings. Load your PCM600 project and confirm the licensed function set before the relay goes into service.

Can you test the protection functions before shipment? We verify identity, firmware, and I/O on the bench. Full secondary injection against your settings is a commissioning activity, and we will tell you exactly what we did and did not test.

What do you need to quote the right replacement? Full label photo, PCM600 project name, firmware revision, panel drawing with CT/VT ratios, and station communication addresses. That five-minute upload prevents most wrong-part returns.