ABB REF615 Feeder Protection Relay

Relion® reliability, safety and dependability

The REF615 is a specialised feeder relay, perfectly matched for the protection, control, measurement and monitoring of utility substations and industrial power systems.

The REF615 is a member of the ABB Relion® family and part of its 615 protection and control product range.The 615 series of ANSIs is characterised by compactness and design flexibility.The 615 series has been designed from the ground up to unlock the full potential of the IEC 61850 standard for communication and interoperability of substation automation equipment.

Scope

Feeder protection for overhead lines, cable feeders and busbar systems in distribution substations

Key Benefits

Maximises capital by keeping assets working longer in designs that require less equipment and space

Reduce hazards and increase safety through safety-conscious design

Increase reliability by maintaining critical operations with consistent, high-quality power every minute of every day

Lower operating costs through effective energy management and maintenance strategies

More flexible system upgrades without rewiring or replacing components

Easy integration with non-proprietary IEC 61850 communications

Key Features

Pull-out design

Fault detection (CFD) for underground and overhead cables

High impedance (HIZ) fault detection

Arc Flash Detection (AFD)

Ring lug terminals for all inputs and outputs

Large, easy-to-read LCD

Description of the REF615

The REF615 is a dedicated feeder IED (Intelligent Electronic Device) designed to protect, control, measure and monitor utility substations and industrial power systems.

This includes radial, ring and grid distribution networks with or without distributed generation.

The REF615 is a member of the ABB Relion® product family and part of the 615 Protection and Control product family.

The 615 series of IEDs is characterised by its compact and withdrawable unit design.

The 615 series has been redesigned from the ground up to utilise the full potential of the IEC 61850 standard for communication and interoperability between substation automation devices.

Communication and interoperability between devices.

IEDs provide primary protection for overhead lines and cable feeders in distribution networks.

IEDs can also be used as backup protection in applications that require a separate redundant protection system.

Depending on the standard configuration selected, IEDs can be used to protect overhead lines and cable feeders in isolated neutral, resistance-grounded, compensating-grounded and solid-grounded networks.

The standard configuration IEDs are ready for use after application-specific setup.

The Series 615 IEDs support a range of communication protocols including IEC 61850 with GOOSE messaging, IEC 60870-5-103. Modbus® and DNP3. 2.

2. Standard Configurations The REF615 is available in nine standard configurations.

The standard signalling configurations can be changed via the graphical signalling matrix or via the graphical application functions of the Protection and Control IED Manager PCM600.

In addition, the application configuration function of the PCM600 supports the creation of multi-layer logic functions using various logic elements, including timers and triggers.

By combining protection functions with logic function blocks, the IED configuration can be adapted to the user's specific application requirements.

Protection Functions

IEDs provide directional and non-directional overcurrent and thermal overload protection, as well as directional and non-directional ground fault protection.

Some standard configurations are available with optional ground-fault protection based on conductivity, harmonics or power metering.

or wattage metering-based ground-fault protection. In addition, IEDs feature sensitive ground-fault protection, phase discontinuity protection,

instantaneous/intermittent earth fault protection, overvoltage and undervoltage protection, residual overvoltage protection, positive sequence undervoltage and negative sequence overvoltage protection.

IEDs with H and J configurations as standard also provide frequency protection, including overfrequency, 1MRS756379 M underfrequency, and rate-of-frequency-change protection.