Product Details
Product Description
The ABB REF 601 feeder protection and control relay is a compact, pre-configured device from the Relion 605 series. It is specifically designed for medium-voltage applications in utility substations and industrial power systems. Supporting both Rogowski coil sensor technology and conventional current transformers (CTs), it provides versatile protection and control functionality.
Technical Specifications
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Product Version: 2.0
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Nominal Input Voltage: 24–240 V AC/DC
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Sensor Inputs: 3 Rogowski coil inputs
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Earth Fault Input: 1 core balance CT input (1 A)
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Binary Inputs: 4 (remote trip, reset, close, open)
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Binary Outputs: 2 trip, 2 signaling, 1 breaker close, 1 unit ready/IRF
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Mounting Depth: 102 mm
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Weight: 1.2 kg
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Communication Protocols: Modbus RTU, IEC 60870-5-103
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Interface: RS485 (2-wire)
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Protection Class: IP42 (front), IP20 (sides)
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EMC Compliance: IEC 60255-26, EN 50263
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Safety Standards: EN 60255-27, EN 60255-1
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RoHS Compliance: Yes
Functional Highlights
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Overcurrent Protection: Three-stage (low, high, very high)
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Earth-Fault Protection: Two-stage (low, high)
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Transformer Inrush Detection: Second harmonic blocking method
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Negative Phase Sequence Protection: Detects imbalance and discontinuity
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Circuit Breaker Failure Protection: Ensures system reliability
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Thermal Overload Protection: For feeders, cables, and transformers
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Auto-Reclose Functionality: Multi-shot capability
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Trip Circuit Supervision: Monitors breaker trip circuits
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Configurable Logic Gates: Flexible system integration
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Event Logging & Fault Recording: Non-volatile memory storage
Application Scenarios
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Medium-voltage feeder protection in utility substations
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Industrial power distribution systems requiring compact relay solutions
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Systems using Rogowski coil sensors or conventional CTs
FAQ
Q: Does the REF601 support both Rogowski coils and CTs? A: Yes, it is compatible with Rogowski coil sensors and conventional current transformers.
Q: What communication protocols are available? A: The relay supports Modbus RTU and IEC 60870-5-103 via RS485 interface.
Q: How is transformer inrush detected? A: The relay uses second harmonic blocking to distinguish inrush currents from faults.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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Marshalling Cabinet Preventive Maintenance: Essential Healthiness Checks for PLC, DCS, and ESD Systems
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