ABB REF543 Feeder Terminal

ABB REF543 Feeder Terminal Supplier and Exporter in India

ABB REF543 Legacy Spare, Replacement and Modernisation Support

ABB REF543 is a legacy feeder protection and control terminal. ABB lists the product as not active since 2022. For replacement or modernisation, the complete order code, hardware/software revision and existing configuration should be checked first.

Description

ARP IMPEX supplies and exports ABB REF543 feeder terminals for medium-voltage feeder protection, control and existing REF54x installations.

REF543 belongs to ABB’s REF54x feeder terminal family and combines protection, breaker control, measurement, condition monitoring and communication in one unit. It can be used with single-busbar, double-busbar and duplex switchgear and supports different network arrangements including isolated-neutral, resonant-earthed and partially earthed systems.

Depending on its original configuration, REF543 can handle feeder overcurrent and earth-fault protection together with voltage and frequency functions, breaker control, measurements, interlocking and disturbance information. ABB also provided programmable logic functions so feeder automation and switching sequences could be handled within the same terminal.

Compared with REF541, REF543 provides a larger input/output capacity, with ABB specifying 25 binary inputs and 18 output relays. This makes it useful where a feeder panel requires more indications, interlocks or control signals.

For ABB REF543 price, availability, legacy spare or replacement enquiries, send the complete ABB order code, a clear nameplate photo, quantity and destination country. REF543 was available with different functionality and hardware arrangements, so the exact installed unit should be identified before quoting.

Technical Specifications

• Brand: ABB
• Family: REF54x / RE500
• Model: REF543
• Product type: Feeder protection and control terminal
• Product status: Not active since 2022
• Main application: Medium-voltage feeder protection and control
• Binary inputs: 25
• Output relays: 18
• Protection functions: Depend on selected functionality and configuration
• Measurement: Current and voltage measurement using conventional instrument transformers or supported sensors
• Breaker control: Local and remote control functions
• Condition monitoring: Available
• Programmable logic: PLC functions for interlocking and automation
• Communication: SPA, LON, IEC 60870-5-103 and other supported interfaces
• IEC 61850: Supported through SPA-ZC 400 adapter
• Other protocol options: Profibus DPV1, DNP 3.0 and Modbus through applicable arrangements
• Fault location: Available for short-circuit applications

ABB supplied REF54x terminals with different hardware and software combinations. The complete order number therefore gives more useful information than the REF543 model name alone. ABB documentation shows that the order code identifies the terminal type, hardware, software revision and functionality level.

Features

• Feeder overcurrent protection
• Earth-fault protection
• Voltage and frequency protection depending on configuration
• Circuit-breaker control
• Local and remote switching
• Current and voltage measurement
• Fault-location functions
• Condition monitoring
• Programmable interlocking logic
• Substation automation functions
• Disturbance and fault information
• Wide communication protocol support
• Optical communication
• Local HMI for operating information

REF543 is therefore better described as a feeder protection and control terminal rather than only a simple overcurrent relay.

Applications

ABB REF543 can be used for:

• Medium-voltage feeder protection
• Incoming feeder panels
• Outgoing feeder panels
• Cable feeder protection
• Distribution substations
• Industrial power distribution
• Single-busbar switchgear
• Double-busbar switchgear
• Duplex switchgear
• Isolated-neutral networks
• Resonant-earthed networks
• Partially earthed networks
• Feeder automation and interlocking
• Medium-sized motor applications
• Shunt capacitor-bank protection and control
• Substation automation systems

ABB documents the REF54x family for feeder protection as well as applications involving voltage/frequency protection, motor protection, thermal overload, capacitor-bank protection and synchro-check functions, depending on configuration.

ABB REF54x Feeder Terminal Family

REF543 is part of ABB’s REF54x family, which includes:

ABB REF541

REF541 is the smaller I/O version of the family. It is suitable where fewer indication, interlocking and control points are required.

ABB REF543

REF543 provides 25 binary inputs and 18 output relays, offering more I/O capacity than REF541.

ABB REF545

REF545 provides the highest I/O capacity in the REF541/543/545 group and was intended for applications requiring a larger number of control, signalling and interlocking points.

All three belong to the same feeder-terminal family, but REF541, REF543 and REF545 should not automatically be treated as interchangeable.

The I/O arrangement, functionality level, hardware, software revision and existing application configuration need to be checked.

ABB REF543 Functionality Levels

ABB’s REF54x documentation identifies three main functionality levels:

• C – Control: Control, condition monitoring and measurement functions
• B – Basic: Control, condition monitoring and measurement plus basic protection
• M – Multi: Wider control, measurement and protection functionality

ABB REF543 Replacement and Modernisation

ABB REF543 is a legacy product, but ABB continues to document service and modernisation routes for the REF541/543/545 installed base.

ABB’s system-retrofit scope includes REF541, REF543 and REF545, with migration possibilities toward current Relion platforms such as REX610, 615-series, 620-series or REX640 solutions. ABB also states that these migrations are site-specific and require review of the existing switchgear drawings, mounting, protection configuration, I/O arrangement and parameter settings.

For an existing REF543 requirement, first check:

• Complete ABB order code
• Clear nameplate photograph
• Hardware/software revision
• Existing configuration, if available
• Quantity
• Destination country

Why Buy ABB REF543 from ARP IMPEX?

ARP IMPEX supplies ABB protection and control products for international requirements.

We can assist with:

• ABB REF543 part-code checking
• Hardware and software revision identification
• Existing terminal nameplate matching
• REF543 legacy spare enquiries
• REF541 / REF543 / REF545 requirements
• Replacement and modernisation enquiries
• Single and multiple quantities
• ABB technical documentation
• Export packing
• International shipping support

We handle enquiries from utilities, EPC contractors, industrial plants, power companies, panel builders, maintenance contractors and electrical traders.

Request a Quote for ABB REF543

For ABB REF543 price and availability, please send:

• Complete ABB REF543 order code
• Clear nameplate photograph
• Product revision, if available
• Quantity required
• Destination country
• Required delivery date

For modernisation enquiries, the existing configuration file and panel drawings may be required after the installed REF543 has been identified.

Send your ABB REF543 part code, quantity and destination country to ARP IMPEX for availability, replacement checking and export quotation.