ABB REF601 Feeder Protection and Control Relay

• • Earth fault protection (two-stage)
  • Phase discontinuity protection
  • Negative-phase sequence protection
  • Thermal overload protection
  • Inrush current detection for transformer charging
  • Circuit breaker control and reclosing
• Measurement Capabilities:
  • Continuous measurement of phase currents and earth currents
  • Earth current measurement via external zero-sequence current transformers or internal calculations
• Communication Interfaces:
  • Optional MODBUS RTU or IEC 60870-5-103 protocols
  • Support for IEC 61850 (in advanced configurations)
• Power Supply:
  • Universal power supply range: 24-265 V AC/DC
• Input/Output Configuration:
  • Configurable binary inputs and outputs via local HMI or communication interface
  • Site-selectable CT ratios (1 A or 5 A)
  • Boolean logic and timer functions for customization
• Event Recording:
  • 100 event logs with date and time stamps
  • Five analog fault records
  • Non-resettable trip counter
• Environmental and Mechanical Specifications:
  • Operating temperature: -25°C to +70°C (standard), -40°C to +85°C (extended option)
  • Protection class: IP40 (front panel)
  • Compact design suitable for space-limited installations

Functional Features

• Preconfigured Functionality:
  • Facilitates rapid commissioning with predefined settings for common applications.
• Extensive Self-Supervision:
  • Monitors relay hardware and software for enhanced reliability.
• Local Human-Machine Interface (HMI):
  • Supports multiple languages for intuitive operation and configuration.
• Flexible Communication:
  • Enables integration with SCADA systems and remote monitoring platforms.
• Safety Enhancements:
  • Features CT shorting facilities and detachable terminals for secure maintenance.
• Press-Fit Mounting:
  • Simplifies installation with a press-fit arrangement, reducing setup time.

Application Scenarios

• Primary and Secondary Distribution Networks:
  • Protects overhead lines and cable feeders in solidly earthed, resistance-earthed, or isolated networks.
• Utility Substations:
  • Safeguards incomers and outgoers in medium-voltage配电变电站 (distribution substations).
• Industrial Power Systems:
  • Ensures reliable operation in manufacturing plants, petrochemical facilities, and other industrial settings.
• Renewable Energy Integration:
  • Supports grid connection and protection for wind and solar power generation systems.
• Infrastructure Projects:
  • Applied in railways, airports, and data centers for critical power distribution protection.

Advantages

• Compact and Flexible Design:
  • Ideal for retrofitting and new installations with limited space.
• High Performance and Reliability:
  • Based on ABB’s deep expertise in protection and digital technologies.
• Ease of Use:
  • Preconfigured settings and a user-friendly HMI streamline operation and maintenance.
• Scalability:
  • Supports a wide range of applications with configurable protection schemes and communication options.
• Global Compliance:
  • Meets international standards such as IEC 60255, ensuring compatibility across regions.