ABB REF542PLUS 1VCF750090R801 Feeder Protection and Control Relay

Product Overview

The REF542PLUS (1VCF750090R801) is a high-performance numerical feeder protection and control terminal designed for the sophisticated management of medium-voltage power distribution networks. This Intelligent Electronic Device (IED) integrates protection, control, measurement, and monitoring functions within a modular hardware platform. Engineered for high-speed fault detection, the REF542PLUS (1VCF750090R801) utilizes advanced microprocessor technology to execute complex logic schemes, making it an ideal solution for substation automation. It supports a wide array of communication protocols, ensuring seamless connectivity with centralized SCADA systems while providing robust protection for feeders, transformers, and industrial motors.

Detailed Technical Specifications

• Manufacturer: ABB

• Model: REF542PLUS

• Part Number: 1VCF750090R801

• Device Category: Numerical Feeder Protection and Control Relay

• Protection Functions: Multi-stage overcurrent, earth-fault (directional/non-directional), thermal overload, undervoltage/overvoltage, and breaker failure protection.

• Measurement Precision: Real-time monitoring of phase current, voltage, frequency, active/reactive power, and energy.

• Rated Current Input: 1 A or 5 A (Selectable via configuration)

• Rated Voltage Input: Standard secondary input up to 110 V AC

• Nominal Frequency: 50 / 60 Hz

• Auxiliary Power Supply: Universal wide-range 24–250 V DC or 48–240 V AC

• Binary I/O: Multiple programmable digital input and output channels for interlocking and signaling.

• Communication Protocols: IEC 61850, IEC 60870-5-103, Modbus RTU, and DNP3.

• Event Recording: Integrated disturbance recorder and sequence-of-events log for high-resolution fault analysis.

• Operating Temperature: -25°C to +70°C

• Storage Temperature: -40°C to +85°C

• Physical Dimensions: 22.4 cm x 13.5 cm x 5.8 cm (8.8 in x 5.3 in x 2.3 in)

• Product Weight: 0.7 kg (1 lbs 9.1 oz)

• Ingress Protection: IP20

• Compliance: IEC protection relay standards, CE certified.

• Tariff Code: 8528510000