Introduction to ABB REF542PLUS 1VCR007346

REF542PLUS 1VCR007346 Product Overview

REF542PLUS 1VCR007346 Technical Parameters

• Product Model: REF542PLUS 1VCR007346
• Product Type: Numerical Relay Protection and Control Device (REF Series)
• Core Functions: Comprehensive overcurrent/earth fault protection, differential protection, overload protection, fault location identification, real-time power measurement, remote control, event logging, fault diagnosis and alarm
• Power Supply: DC supply: 24V/48V/110V/220V DC (±20% fluctuation allowed); AC supply: 110V/220V AC (±15% fluctuation allowed); Power consumption: ≤25W
• Protection Specifications: Current range: 0.1-20In; Voltage range: 0-120V (phase); Frequency range: 45-65Hz; Fast trip operating time: ≤20ms; Accuracy class: 0.5S (measurement), 5P10 (protection)
• Interface Type: Ethernet (supports IEC 61850, Modbus TCP/IP); RS485 (supports Modbus RTU); Configurable digital I/O: 16 inputs/8 outputs; Analog inputs: 8 channels (for voltage/current measurement); Relay outputs: 8 NO/NC contacts
• Environmental Ratings: Operating temperature: -25°C to +70°C; Storage temperature: -40°C to +85°C; Relative humidity: 5%-95% (non-condensing); Vibration resistance: 1G (10-150Hz); Shock resistance: 10G
• Mechanical & Installation: Panel-mounted design; Approximate dimensions: 270×230×150mm; Net weight: approx. 3.8kg; 128×64 pixel LCD display; LED status indicators; IP54 protection rating
• Protection Features: Adjustable protection settings; Fault wave recording; Anti-tampering function; Self-monitoring and alarm mechanism; Overvoltage/undervoltage protection
• Compatibility: ABB MicroSCADA Pro, System 800xA DCS, other REF series relays, standard power system sensors (CT/PT)
• Certifications: CE certified; Complies with IEC 60255, IEC 61850, IEC 61010 standards; Passes EMC and electrical safety testing
• Applications: Medium-voltage power distribution networks, power transformers, feeders, motors, industrial plants, commercial buildings, utility power grids; Power system protection, control, and monitoring

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