Category: ABB

Application

RET630 has been designed to be the main

protection and offer full protection for

two-winding power transformers. The

comprehensive transformer management

relay offers two predefined configurations,

of which one is intended for two-winding, high

and medium-voltage (HV/MV) transformer

applications not requiring restricted earth-fault

protection, and the other for such applications

requiring it.

Hot spot and aging rate monitoring is

introduced, which allows calculating the hot

spot temperature of the transformer winding

and the momentary aging rate. As a result,

the impact of thermal stress on the lifetime

of the transformer can be determined.

RET630 also features an integrated voltage

regulator. The voltage regulator allows automatic

and manual voltage regulation of power

transformers with a motor-driven on-load

tap changer.

An optional RTD/mA module offers eight analog

RTD or mA measuring inputs and four mA

outputs. The RTD and mA inputs can be used for

measuring the oil temperature at the bottom and

top of the transformer tank and the ambient

temperature, thus extending the functionality of

the thermal overload protection and preventing

premature aging of the transformer windings.

The RTD and mA inputs can also be used for

tracking the position of the on-load tap changer.

The four mA outputs can be used for transferring

freely selectable measured or calculated analog

values to devices provided with mA inputs.

Transformer protection and control RET630

RET630 has been designed to protect power and step-up transformers

in utility and industrial power distribution systems. RET630 is also ideal for

transformer bay control.

Product highlights

• Extensive range of protection and control

functionality for two-winding HV/MV power

transformers, including advanced and fast

differential protection with high inrush stability

• Support for various neutral earthing options,

matching either high-impedance or numerical

low-impedance restricted earth-fault principles

• Automatic voltage regulation of power

transformers with a motor-driven on-load tap-changer

Application

REF630 has been designed to be the main

protection for overhead lines and cable feeders,

in either isolated neutral, resistance-earthed,

compensated or effectively earthed distribution

networks. The comprehensive feeder

management relay offers four predefined

configurations, intended for open/closed ring

feeder applications, radial overhead/mixed line

feeder applications, ring/meshed feeder

applications and bus sectionalizers.

The earth-fault protection has been significantly

extended, now including not only directional

and non-directional, transient/intermittent,

wattmetric and admittance-based, but also both

harmonics and multifrequency admittance-based

earth-fault protection. The new additions take

the earth-fault protection to new heights,

creating an extensive earth-fault protection

portfolio. In addition, the sensitivity of the

intermittent earth-fault protection has been

significantly improved and reactive power

undervoltage protection added.

REF630 also includes a fault locator that locates

short circuits in radial distribution networks and

earth faults in effectively and low-resistance

earthed ones. If the fault current is as high as or

higher than the load current, earth faults in

isolated neutral distribution networks will also

be located.

Feeder protection and control REF630

REF630 has been designed to protect overhead line and cable feeders in utility

and industrial power distribution systems, including radial, looped and meshed

distribution networks, with or without distributed power generation.

Application

REF630 has been designed to be the main

protection for overhead lines and cable feeders,

in either isolated neutral, resistance-earthed,

compensated or effectively earthed distribution

networks. The comprehensive feeder

management relay offers four predefined

configurations, intended for open/closed ring

feeder applications, radial overhead/mixed line

feeder applications, ring/meshed feeder

applications and bus sectionalizers.

The earth-fault protection has been significantly

extended, now including not only directional

and non-directional, transient/intermittent,

wattmetric and admittance-based, but also both

harmonics and multifrequency admittance-based

earth-fault protection. The new additions take

the earth-fault protection to new heights,

creating an extensive earth-fault protection

portfolio. In addition, the sensitivity of the

intermittent earth-fault protection has been

significantly improved and reactive power

undervoltage protection added.

REF630 also includes a fault locator that locates

short circuits in radial distribution networks and

earth faults in effectively and low-resistance

earthed ones. If the fault current is as high as or

higher than the load current, earth faults in

isolated neutral distribution networks will also

be located.

Product highlights

• Extensive earth-fault protection portfolio with

unique multifrequency admittance-based

protection for higher sensitivity and selectivity

• Advanced and fast fault location of short

circuits and earth faults

Life cycle services

ABB offers full support for all protection and

control relays throughout their entire lifecycle.

Our extensive life cycle services include training,

customer support, maintenance and

modernization.

Main customer benefits

• Flexible solution for demanding utility and

industrial power distribution systems with

integration of protection, control, monitoring

and supervision in one relay 

Automatic voltage regulation

• Fast GOOSE messaging according to IEC 61850

for less interpanel wiring and supervised communication

• Wide application coverage – feeder, transformer,

motor and generator protection and control

• Functional scalability and flexible configurability 

– easy tailoring of convenient pre-configurations

to application-specific requirements with

freely selectable functions

• Detached HMI – as an option to the integrated

HMI – beneficial from a wiring perspective

because of the large amount of IOs

• Large graphical display for showing

customizable SLDs, accessible either locally

or through a web browser-based HMI

• Extensive life cycle services

Standardized communication

The 630 series relays fully support Edition 1

of the IEC 61850 standard for communication

and interoperability of substation automation

devices. The relays also support the DNP3

(TCP/IP) and IEC 60870-5-103 communication

protocols and are able to use two protocols

simultaneously. The supported communication

protocols, including IEC 61850. offer seamless

connectivity to various station automation

and SCADA systems.

The implementation of the IEC 61850 standard

covers both vertical and horizontal

communication, including GOOSE messaging

according to IEC 61850-8-1 with both binary and

analog signals. Analog GOOSE messaging enables

fast transfer of analog measured values over

the station bus. This facilitates, for example,

sharing of RTD input values, such as surrounding

temperature, with other relays. GOOSE messaging

is an alternative to traditional hardwiring signaling

for exchanging interlocking information between

the relays. For time-critical applications, the 630

series relays support synchronization over

Ethernet using SNTP or over a separate bus

using IRIG-B.

Human-machine interface

The 630 series relays are equipped with a large

graphical display that can show customizable

single-line diagrams (SLD) with position

indication for the circuit breaker, disconnectors

and the earthing switch. Also measured values

provided by the configuration can be displayed.

The SLDs can be flexibly adjusted to meet user

requirements using PCM600 and accessed not

only locally but also via the web browser-based

human-machine interface (HMI).

The 630 series HMI is distinguished by fifteen

three-color LEDs and five configurable push

buttons that can be used as control buttons for

various tasks, such as blocking, adjusting setting

groups or triggering the disturbance recorder.

The five push buttons can also be conveniently

used as menu shortcuts. Another distinguishing

feature is the detached HMI, as an option

to the integrated HMI, which is highly beneficial

from a wiring perspective due to the large

number of IOs the 630 series relays are equipped with.

Functional scalability and flexible configurability make the

Relion® 630 series of relays from ABB ideal for demanding power

distribution applications.

630 series

Flexibility for demanding utility and industrial power distribution systems

The 630 protection and control series of relays is a member of ABB’s

Relion® product family. The 630 series relays are characterized by their

functional scalability and flexible configurability.

Flexible adaptation to application-specific requirements

The 630 series relays can be used in either single

or double-busbar applications with one or two

breakers and numerous switching devices.

They also support a substantial number of both

manually and motor-operated disconnectors and

earthing switches. Consequently, the 630 series

relays can be used to control various types of switchgear.

The 630 series relays offer predefined

configurations, designed to match the most

typical protection and control requirements for

fast and easy setup. The pre-configurations

can be used as such or easily tailored to meet

application-specific requirements – with

freely selectable functions – using the

IEC 61850-compliant Protection and Control

IED Manager PCM600.

Product benefits

• Freely configurable functionality to meet application specific requirements

• Extensive functionality and scalable hardware for the most demanding applications

• All-in-one solution with integration of protection, control, monitoring and supervision in one relay

• Large integrated or detached HMI with user configurable push buttons, making it easy to use

• Extensive life-cycle services

Product features

• Generator differential protection, 3rd harmonic based stator earth-fault protection,

reverse power protection and extensive interconnection protection for distributed generation

• Optional RTD/mA module to be used for various protection and monitoring purposes in generator

applications

• 8 RTD/mA inputs and 4 mA outputs

• Supports native IEC 61850 Edition 1. including GOOSE messaging for less wiring and supervised

communication

• Supports DNP3 (TCP/IP) and IEC 60870-5-103 communication protocols

Flexibility and high functionality for generator protection and control applications

Not active product since 2024

REG630 is a comprehensive generator management relay for the protection, control,

measurement and supervision of small and medium sized power generators and 

generator-transformer units in utility and power distribution systems.

REG630 is a member of ABB’s Relion® family and part of its 630 protection and control product series.

Scope

• REG630 has been designed to be the main protection for generator and generator-transformer units

Product benefits

• Freely configurable functionality to meet application specific requirements

• Extensive functionality and scalable hardware for the most demanding applications

• All-in-one solution with integration of protection, control, monitoring and supervision in one relay

• Large integrated or detached HMI with user configurable push buttons, making it easy to use

• Extensive life-cycle services

Product features

• Generator differential protection, 3rd harmonic based stator earth-fault protection,

reverse power protection and extensive interconnection protection for distributed generation

• Optional RTD/mA module to be used for various protection and monitoring purposes in generator

applications

• 8 RTD/mA inputs and 4 mA outputs

• Supports native IEC 61850 Edition 1. including GOOSE messaging for less wiring and supervised

communication

• Supports DNP3 (TCP/IP) and IEC 60870-5-103 communication protocols