ABB REF550 Feeder Protection Relay

ABB REF550 Feeder Protection Relay Supplier and Exporter in India

ABB REF550 Legacy Feeder Relay – Price and Availability

ABB REF550 is an advanced feeder protection and control relay used for distribution feeders and subtransmission lines. It is now part of ABB’s legacy protection relay range. For ABB REF550 price and availability, send the complete catalogue number, nameplate photograph, quantity and destination country.

Description

ARP IMPEX supplies and exports ABB REF550 feeder protection relays for utility networks, industrial electrical systems and existing ABB protection installations.

REF550 was developed for distribution feeder and subtransmission line protection, control, monitoring and automation. It combines the main feeder protection functions with breaker control, fault recording and communication in one relay.

One of the more distinctive functions of REF550 is ABB’s High Impedance Fault detection (HIF Detect). This was designed to identify difficult feeder faults such as a downed conductor making contact with surfaces including soil, gravel, concrete or sand, where the fault current may be too low for conventional overcurrent protection to operate normally.

The relay also covers conventional feeder faults through phase and ground overcurrent protection, voltage protection, frequency protection, autoreclosing and breaker supervision.

For buyers looking for an ABB REF550 replacement relay, legacy spare or matching unit, the complete catalogue number is important. REF550 was supplied with different current ranges, control voltages, front-panel options and communication arrangements.

Technical Specifications

• Brand: ABB
• Model: REF550
• Product type: Advanced feeder protection and control relay
• Product range: ABB legacy protection relays
• Main application: Distribution feeder protection
• Line application: Subtransmission line protection
• Phase overcurrent protection: Available
• Ground overcurrent protection: Available
• Negative-sequence overcurrent protection: Available
• High Impedance Fault detection: Available on applicable REF550 configuration
• Voltage protection: Overvoltage and undervoltage functions
• Frequency protection: Overfrequency and underfrequency
• Automatic reclosing: Multi-shot reclosing
• Breaker failure protection: Available
• Synchronism check: Available
• Fault recording: Digital fault recording
• Time synchronisation: IRIG-B / SNTP depending on communication arrangement
• Communication: Multiple serial and Ethernet options depending on ordered configuration

The exact functions and communication arrangement should be confirmed from the REF550 catalogue number before quoting a matching unit.

Features

• Feeder overcurrent protection
• Ground-fault protection
• High-impedance fault detection
• Negative-sequence protection
• Overvoltage and undervoltage protection
• Frequency protection
• Multi-shot automatic reclosing
• Breaker failure protection
• Synchronism-check function
• Digital fault recorder
• Load profile recording
• Programmable logic
• Local relay display and controls
• SCADA communication options
• Time synchronisation for event and fault records

REF550 is particularly relevant where feeder protection involves more than basic overcurrent and earth-fault functions and where the existing installation uses ABB’s HIF detection or customised relay logic.

Applications

ABB REF550 can be used for:

• Distribution feeder protection
• Subtransmission line protection
• Overhead line protection
• Utility distribution networks
• Industrial distribution feeders
• Feeder circuit-breaker control
• High Impedance Fault detection
• Downed conductor detection
• Feeder autoreclosing
• Load-shedding schemes
• Distribution automation
• Substation monitoring
• Feeder fault recording
• Existing ABB REF550 protection panels

ABB specifically positions REF550 for distribution feeder and subtransmission line protection and control, with protection functions covering phase faults, ground faults, voltage, frequency and breaker-related conditions.

ABB REF550 High Impedance Fault Detection

High Impedance Fault detection is an important point to retain on this product page because it separates REF550 from many standard feeder relays.

A fallen overhead conductor touching a road surface, dry ground, gravel or another high-resistance surface may not produce enough current to operate conventional feeder overcurrent protection quickly.

REF550’s HIF Detect function was developed to identify these types of abnormal feeder conditions.

For existing utilities using this function, the relay configuration and catalogue number should be checked carefully when sourcing a spare or planning a replacement.

ABB REF550 Operator Interface

REF550 was available with an enhanced operator control interface. Depending on the ordered version, this included:

• Breaker control buttons
• Programmable status indications
• Larger LCD
• Quick-access menu buttons
• Optional Hot Line Tag control

ABB documentation confirms that the operator-interface option forms part of the REF550 catalogue number.

This is another reason why the complete catalogue number and front-panel photograph are useful when matching an existing relay.

ABB REF550 Legacy Spare and Replacement Enquiries

ABB currently lists REF550 within its legacy relay portfolio.

ARP IMPEX can assist with enquiries for:

• ABB REF550 price
• ABB REF550 availability
• Existing REF550 part-number checking
• REF550 legacy spare requirements
• REF550 catalogue-number identification
• HIF version enquiries
• Existing relay matching
• Replacement requirements
• Single-unit requirements
• Multiple-quantity quotations
• Export packing and international supply

For a matching relay enquiry, please send:

• Complete ABB REF550 catalogue number
• Clear nameplate photograph
• Front-panel photograph
• Quantity required
• Destination country
• Required delivery date

Related ABB Feeder Protection Relays

REF550 is a specific ABB feeder protection relay rather than a large family containing REF550A, REF550B and similar separate model numbers.

ABB’s current REF550 legacy page lists REF620 ANSI as a related feeder protection offering.

Other ABB feeder protection products belong to different product generations and should be identified separately according to the required protection functions and installed system.

Why Buy ABB REF550 from ARP IMPEX?

ARP IMPEX supplies ABB protection relays for power utilities, EPC contractors, industrial plants, panel builders, maintenance companies and electrical traders.

We can assist with:

• ABB REF550 part-number checking
• Legacy spare enquiries
• HIF configuration identification
• Existing relay matching
• Technical document support
• Single and multiple quantity quotations
• Export packing
  International shipment

Request a Quote for ABB REF550

Looking for an ABB REF550 feeder protection relay supplier in India, an old REF550 spare or a relay for an existing substation?

Send us:

• Complete REF550 catalogue number
• Relay nameplate photo
• Quantity
• Destination country
• Delivery requirement

Send your ABB REF550 catalogue number and quantity to ARP IMPEX for price, availability and export quotation.