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The ABB RED615, also cataloged as the RED615 line differential protection and control relay, provides phase-segregated two-end line differential protection, backup fault protection, measurement, control, and supervision across ABB Relion 615 platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RED615 |
| Brand | ABB |
| Series | Relion 615 |
| Product Type | Line differential protection and control relay |
| Protection Function | Two-end phase-segregated line differential protection, 87L |
| Backup Protection | 50/51, 67, 50N/51N, 67N |
| Communication Link | Fiber-optic link or galvanic pilot wire |
| Communication Protocols | IEC 61850 Ed. 1 and Ed. 2, Modbus, DNP3, IEC 60870-5-103 |
| IEC 61850 Functions | GOOSE, HSR, PRP, IEC 61850-9-2 LE |
| Time Synchronization | IEEE 1588 V2 |
| Auxiliary Supply, High Voltage | 100 / 110 / 120 / 220 / 240 V AC, 50/60 Hz; 48 / 60 / 110 / 125 / 220 / 250 V DC |
| Auxiliary Supply, Low Voltage | 24 / 30 / 48 / 60 V DC |
| Power Consumption | DC: < 13.0 W quiescent, < 18.0 W maximum; AC: < 16.0 W quiescent, < 21.0 W maximum |
| Interruption Ride-Through | Maximum 50 ms at nominal auxiliary voltage |
| Frame Dimensions | 177 mm W x 177 mm H, 4U |
| Case Dimensions | 164 mm W x 160 mm H x 201 mm D |
| Weight | 2.1 kg |
| Mounting | Flush, semi-flush, or wall-mounted 19-inch rack |
| HMI | Large graphical LCD with customizable single-line diagrams |
Line Differential Protection and Substation Communication
RED615 exchanges line differential protection information between two substations through either a fiber-optic communication link or a galvanic pilot wire connection. The protection function is phase-segregated and can be applied to overhead lines and cable feeders.
The relay supports line differential applications with an in-zone transformer. Backup functions include directional and non-directional phase overcurrent, directional and non-directional earth-fault protection, and additional admittance, wattmetric, and harmonics-based ground-fault functions.
For substation communication, RED615 supports IEC 61850 Editions 1 and 2, GOOSE messaging, HSR, PRP, and IEC 61850-9-2 LE process bus communication. Modbus, DNP3, and IEC 60870-5-103 are also supported. IEEE 1588 V2 provides time synchronization for Ethernet-based substation communication.
Frequently Asked Questions
Q: How is the two-end line differential communication physically connected?
A: The two RED615 end relays can communicate through a direct fiber-optic link or a galvanic pilot wire connection.
Q: Does RED615 support both protection and backup overcurrent functions?
A: Yes. The relay provides phase-segregated two-end line differential protection and includes directional and non-directional overcurrent and earth-fault protection functions.
Q: What auxiliary supply ranges are specified for RED615?
A: The supplied data specifies high auxiliary voltage options of 100 / 110 / 120 / 220 / 240 V AC at 50/60 Hz and 48 / 60 / 110 / 125 / 220 / 250 V DC. Low auxiliary voltage options are 24 / 30 / 48 / 60 V DC.
Field Installation Guidelines
Install the relay according to the applicable RED615 mounting and wiring documentation. Verify the selected auxiliary supply rating before energization.
For line differential communication, use the specified fiber-optic interface or galvanic pilot wire arrangement according to the protection scheme. Keep communication wiring separated from high-current power conductors where practical.
For instrument transformer connections, verify phase identification, polarity, secondary circuit continuity, and protection circuit grounding before commissioning. Apply the specified shielding and grounding arrangement for communication and signal cables.
The withdrawable plug-in unit should be installed and removed only under the conditions specified by the applicable ABB installation documentation. Before testing protection functions, verify CT and VT circuits, binary I/O wiring, communication links, auxiliary supply, and relay configuration.
Configure IEC 61850, Modbus, DNP3, or IEC 60870-5-103 interfaces according to the selected station architecture. Verify time synchronization and communication supervision before placing the protection scheme into service.
Payment: T/T, Western Union.
Shipping port: Xiamen.
Lead time: Typically 1–3 working days after payment confirmation (subject to stock).
Worldwide delivery: We ship industrial automation parts to customers around the world. Freight is quoted with your RFQ.
F.A.Q.
Common questions about quotes, shipping, warranty and returnsClick Request a Quote on the product page and send us the part number, required quantity, and destination country. Our sales team will reply with current availability, pricing, and estimated delivery time.
In-stock items are normally prepared after payment and order confirmation. Most orders are dispatched from our warehouse in China, although the shipping location may vary depending on current stock.
Yes. We ship industrial automation parts to customers worldwide. Shipping cost and transit time depend on the destination, package weight, product size, and local import requirements.
We commonly use DHL, FedEx, UPS, and other international courier services. The carrier can be selected according to the destination, delivery speed, shipment size, and customer requirements.
Our products are generally covered by a 12-month warranty. Eligible products may also be returned under our 30-day refund policy. Please contact our team before returning any item to confirm the applicable terms and return instructions.
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