REF 542plus 1VCF752000 Feeder Terminal - ABB

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Description

• The Feeder Terminal 542plus 1VCF752000 is a compact protection, control, measurement and supervision terminal for the power distribution system. 
  
• The same terminal can be used for feeder, transformer and motor protection and control, or solely for switchgear control. The terminal features an impressive range of protection and management functions readily available for adapting the unit to the intended application. 

Specification

●Product Family:REF542plus Feeder Terminal 
●Part Number:1VCF752000
●Rated Auxiliary Voltage:48 V DC to 220 V DC
●Rated Current (In):0.2 A, 1.0 A, 5.0 A 
●Rated Voltage (Un):100 - 125 V AC 
●Rated Frequency (fn):50 Hz / 60 Hz 
●Max Channels:Up to 8 analog input channels
●Consumption (Current):≤0.1 VA at In 
●Consumption (Voltage):≤0.25 VA at Un

Application

The REF 542plus 1VCF752000 is widely used in:

Feeder Protection: Overcurrent, earth fault, and reclosing for outgoing and incoming feeders in distribution substations.

Transformer Protection: Differential protection (87), restricted earth fault (87N), and thermal overload protection for power transformers.

Motor Protection: Specific functions including locked rotor (51LR), number of starts (66), and thermal replica (49) for motors in industrial environments (including ATEX-certified versions for explosive areas).

Switchgear Control: Local or remote control of circuit breakers, disconnectors, and earthing switches.

Power Quality Mitigation: Power factor controller (55) and high harmonic protection.

FAQ for REF 542plus 1VCF752000

• Q1: What communication protocols are supported by the REF542plus 1VCF752000?

A:The device supports IEC 61850-8-1, IEC 60870-5-103, Modbus RTU, Modbus TCP, SPA, and LON (LAG 1.4) via optional communication modules .

• Q2: Can the REF542plus connect to conventional current transformers (CTs) as well as sensors?

A: Yes. The analog inputs are designed to connect to both conventional instrument transformers (CTs/VTs) and non-inductive sensors.

• Q3: What happens if the unit loses power?

A: The REF542plus is equipped with non-volatile memory for fault records and settings. Additionally, every binary I/O module includes a watchdog contact that triggers in case of power loss or hardware failure to alert the system .

• Q4: How many protection functions can be active simultaneously?

A: At most 24 protection functions can be installed and active in a single REF542plus unit.