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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Why Programmable Logic Controllers Drop into Stop Mode: An Expert Analysis
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As control systems evolve across modern factory automation, understanding the root causes of these interruptions helps engineers minimize costly downtime. This technical guide breaks down why PLCs trip into Stop mode and provides practical strategies to mitigate system faults.