Category: ABB

Overview

RET615 is a dedicated transformer protection and control relay for power transformers,

unit and step-up transformers including power generator-transformer blocks in utility and

industry power distribution systems.

RET615 is a member of ABB’s Relion® product

family and part of its 615 protection and control product series. 

The 615 series relays are characterized by their compactness and withdrawable-unit design.

Re-engineered from the ground up, the 615 series has been designed to unleash the full

potential of the IEC 61850 standard for communication and interoperability between

substation automation devices.

Once the standard configuration relay has been given the

application-specific settings, it can directly be put into service.

The 615 series relays support a range of communication protocols including IEC 61850

with Edition 2 support, process bus according to IEC 61850-9-2 LE, Modbus® and DNP3.

PCM600 and relay connectivity package version

• Protection and Control IED Manager PCM600 2.8 or later

• RET615 Connectivity Package Ver.5.1 or later

• Parameter Setting

• Signal Monitoring

• Event Viewer

• Disturbance Handling

• Application Configuration

• Signal Matrix

• Graphical Display Editor

• Communication Management

• IED User Management

• IED Compare

• Firmware Update

• Fault Record tool

• Load Record Profile

• Lifecycle Traceability

• Configuration Wizard

• AR Sequence Visualizer

• Label Printing

• IEC 61850 Configuration

• IED Configuration Migration

• Differential Characteristics Tool

Description

REU610 is a voltage protection relay for system voltage

protection, measuring and supervising in utility and industrial

power systems. REU610 is a member of ABB’s Relion®

protection and control product family and part of its 610

product series. The 610 series includes protection relays for

feeder protection, motor protection and general system voltage

supervision. The plug-in design of the 610 series protection

relays facilitates the commissioning of the switchgear and

enables fast and safe insertion and withdrawal of relay plug-in units.

The protection relay is primarily designed for the overvoltage

protection of power system components, such as busbars,

feeders, power transformers and capacitor batteries. It is also

used for the general power system earth-fault supervision.

Further, the protection relay can be used for undervoltage

protection of motors and overvoltage protection of capacitor

batteries, for initialization of automatic busbar changeover and

disconnecting small power units from the network in case of a

major network disturbance. The 610 series protection relays

are suitable for employment in marine and offshore environments.

The numerical voltage protection relays of the 610 series

support a wide range of standard communication protocols,

among them the IEC 61850, IEC 60870-5-103, DNP3, Modbus,

Profibus, LON and SPA communication protocols.

Application

The REJ603 is a protection relay aimed at selective short-circuit and earth-fault protection

of feeders in secondary distribution networks and for protection of transformers in utilities and industries.

The inrush current stabilization function allows the relay to be used as main protection of

distribution transformers.

The relay is powered up through current transformer if current is above energizing level of

relay, front USB power or through auxiliary supply (optional feature).

The relay offers, non-directional over current and earth-fault protection. 

The residual current for the earth-fault protection is derived from the phase currents. 

When applicable,the corebalance current transformers can be used for measuring the residual current,

especially when sensitive earth-fault protection is required.

The relay additionally offers thermal overload protection for feeders, cables and transformers.

There is optional provision of remote trip through binary input with external auxiliary power supply.

The remote trip signals like transformer trouble output (Buchholz, Oil temperature,

Winding temperature trip) or an external trip can be wired

to binary input. The remote trip function works even in CT-powered mode when auxiliary supply

is not available but enough CT current is available to power-up the relay.

Measurement

The relay continuously measures phase currents and earth current. Earth current can be

measured using external core balance current transformer or can be calculated internally.

The relay has provision to display measured three phase current and earth current in primary

and secondary terms. Additionally, relay displays status of binary input, binary output and trip

counter for over current and earth fault trip.

During service, the default view of display shows three phase current and the earth current in

secondary terms. The values measured can be accessed using on the local HMI.

Description

REJ603 is a self-powered feeder protection

relay, intended for the protection of utility substations and industrial power systems, in secondary

distribution networks. REJ603 is a member of ABB’s Relion® product family and part of its 605 series.

The feeder protection relay REJ603 is designed to be a part of Ring Main Units (RMU) and secondary distribution switchgears.

The REJ603 relay is a self-powered numerical relay, which receives power from the main current transformers.

This way REJ603 is an ideal choice for installations where an auxiliary supplies are not available and hence is suitable

for unmanned distribution substations having no auxiliary supplies.

Relay has add-on optional function of remote trip through binary input with selection of auxiliary power version.

Relay functions

The relay provides an optimized composition of protection and monitoring functionality in one unit,

with the best performance usability in its class and are based on ABB’s in-depth knowledge of protection and numerical technology.

REJ603 offers pre-configured functionality which facilitates easy and fast commissioning of switchgear.

To emphasize the simplicity of relay’s usage, only application specific parameters needs to set within the relay’s intended area of application.

The relay also has short power up time which ensures fast operation during switch on to fault.

REF601/REJ601 and REM601 are members of ABB’s Relion® protection and control product family and its 605 series.

These relays provide an optimised composition of protection, monitoring and control functionality in one unit,

with the best performance and usability in its class.

The relay REF601/REJ601 offers various application configurations for Feeder protection and control while 

REM601 offers application configurations for Motor protection and control.

Protection and control

REF601/REJ601 offer three-stage overcurrent and two-stage ground fault protection functions.

The low-set stages for overcurrent and ground fault protection are equipped with selectable characteristics

– Definite Time (DT) and Inverse Definite Minimum Time (IDMT).

The relay features standard IDMT characteristics according IEC 61255-3 – Normal Inverse, Very Inverse,

Extremely Inverse, Long-time Inverse.

They also feature characteristics according to ANSI C37.112 – Moderate Inverse, Normal Inverse, Very Inverse, Extremely Inverse.

The relay has a special

characteristic RI Inverse (RI) for better coordination with the rest of the network.

Additionally the relays also support two setting groups.

Thermal overload protection for feeder, cable and transformer,

negative phase sequence protection phase discontinuity protection and circuit breaker failure protection are also offered.

An auto-reclose function for overhead line feeders is optional.

The REM601 offers protections for motors such as thermal overload protection,

short circuit protection, startup supervision, loss-of-phase protection, negative phase sequence protection,

ground fault protection, undercurrent protection and circuit breaker failure protection.

An emergency restart feature allows motor start up even when start inhibit is activated.

The residual current for CT configured relays is derived from the phase currents.

Application 

The REF601 and REJ601 are protection relays aimed at protection and control of incoming and outgoing feeders in MV distribution substations. 

They can be applied for short-circuit, overcurrent and ground-fault protection of 

overhead lines and cable feeders of distribution and sub-distribution networks.

The inrush current stabilization function allows the relays to be 

used as the main protection for distribution transformers.

The relay with application configuration B offers non-directional 

overcurrent and ground-fault protection. The residual current for 

the ground-fault protection is derived from the phase currents. 

When applicable, core-balance current transformers can be 

used for measuring the residual current, especially when sensitive ground-fault protection is required.

The application configuration C adds thermal overload protection for feeders, cables and transformers, phase discontinuity 

protection and circuit breaker failure protection.

The application configuration D provides the highest functionality with incorporation of negative 

phase sequence protection and a multi-shot auto-recloser function making the relay suitable for overhead line feeders.

Optimized for limited space

With their compact size and unique technical features, the 

REF601 and REJ601 are ideal for retrofits, compact switchgear 

and switchgear with limited space. These relays have a small 

mounting depth and do not have any loose mounting accessories. 

Uniquely, the REF601 and REJ601 use a press-fit mounting 

arrangement, suitable for quick and easy installation on switchgear

Control 

The REF601 features control of one circuit breaker with dedicated push-buttons and guidance on local HMI for opening and closing. 

It includes two dedicated outputs for breaker control. 

The breaker control is also possible through optional MODBUS RTU or IEC 60870-5-103 communication.

Description 

The REF601 is a dedicated feeder protection and control relay. 

The REJ601 is an overcurrent protection relay without breaker control. 

These relays are intended for the protection of utility 

substations and industrial power systems within primary and 

secondary distribution networks. They are members of ABB’s 

Relion® product family and part of its 605 series.

These relays, provide an optimized composition of protection, 

monitoring and control functionality in one unit, with the best 

performance usability in its class and are based on ABB’s indepth knowledge of protection and numerical technology

Relay functions

The REF601 and REJ601 can be pre-configured which facilitates easy and fast commissioning of switchgear. 

To emphasize the simplicity of using these relays, only application specific parameters need to be set within the relay’s intended area of application. 

The standard signal configuration can be altered by LHMI (local human-machine interface).

Overview

REF601 CEI overview

REF601 is a dedicated feeder protection relay, intended for the protection, measurement and supervision of utility substations and industrial power systems.

Engineered from the ground up, the relay is inspired by and is compatible with the Rogowski coil sensor for current measurement. 

The new feeder protection relay is designed to unleash the advantages of current sensors for protection and control in medium voltage applications.

The REF601 features compact size and ease of use. 

The features include:

. Sensor input for phase current 

. External CBCT input for earth current 

. Three-stage overcurrent protection 

. Two-stage earth-fault protection 

. Magnetizing inrush detection 

. Control of circuit breaker 

. Local and remote control 

. Five event logs 

 . Two fault records of analogue value 

. Non-resettable trip counter 

. On-line measurements 

. Comprehensive local HMI 

. Universal auxiliary supply rating 

. Circuit breaker or panel mounting 

. Optional Modbus communication 

. Non-volatile memory 

. Access control 

. Self-supervision 

. Built-in test functionality

Introduction

This manual

This manual contains application and functionality descriptions and connection

diagrams, input and output signals, setting parameters and technical data. The

manual can be used as a technical reference during the engineering phase,

installation and commissioning phase, and during normal service. The manual

can also be used when calculating settings. Instructions on how to operate the IED

during normal service once it has been commissioned and it can be used to fi nd

out how to handle disturbances or how to view calculated and measured network

data in order to determine the cause of a fault

Intended Audience

This manual addresses system engineers, installation and commissioning personnel, 

who use technical data during engineering, installation and commissioning, and

in normal service. system engineer must have a thorough knowledge of protection

systems, protection equipment, protection functions and the confi gured functional

logics in the IEDs. The installation and commissioning personnel must have a basic

knowledge in handling electronic equipment.

This manual addresses Protection and control engineer responsible for planning, preengineering and engineering. 

The protection and control engineer must be experienced

in electrical power engineering and have knowledge of related technology, such as

communication and protocols.

The manual also addresses the operator, who operates the IED on a daily basis. The

operator must be trained in and have a basic knowledge of how to operate protection

equipment. The manual contains terms and expressions commonly used to describe

this kind of equipment.

Protection Function

Three Phase Current Protection

Functionality

The three-phase overcurrent protections is used as single-phase, two-phase

or three phase non-directional overcurrent and short-circuit protection for feeders.

The function starts when the current exceeds the set limit. 

The operate time characteristics for low stage is both DMT and IDMT and high stage is definite time (DT) definite minimum. 

The instantaneous stage always operates with the DT characteristic.

In the DT mode, the function operates after a predefined operate time and resets when the fault current disappears. 

The IDMT mode provides current-dependent timer characteristics.

Principle of Operation

The three-phase overcurrent unit continuously measures the phase currents of the protected object. 

On detection of a fault the relay starts, trips the circuit breaker, records fault data etc. in accordance with the application.

REF601 has overcurrent protection with low set, high set and very high set module.

The product support both DMT and IDMT times in low set (I>) while high set (I>>) and Very high set (I>>>) supports to DMT timings. 

As the fault current exceeds the set value, trip time counting is started and start LED on front panel of relay glows ON.