ABB Operation Manual 1MAC054853-MB

IEC 61850

System 800xA fully supports the IEC 61850 standard for Electrical Control Systems.

With its standardized model of the IED and its data and communication services,

IEC 61850 ensures interoperability between electrical devices from different vendors and

is able to replace all the typical protocols found in the substation automation domain. 

Based on Ethernet technology and providing a flexible and open system architecture, 

IEC 61850 makes the application future-proof over entire system lifecycles.

IEC 61850 complements System 800xA’s capability of using open standards to integrate fieldbus devices within process automation. 

For process electrification devices such as low voltage switchgear, variable speed drives and motor controllers, 

System 800xA supports open fieldbus standards such as Profibus and Profinet. For process instrumentation, 

System 800xA has extensive integration with HART, Profibus and Foundation Fieldbus.

Adopting IEC 61850 technology together with System 800xA also permits standardization of 

various procedures in substation configuration, control logic, control libraries and operation procedures. 

The object orientation of IEC 61850 enables standardized device models, 

supported by System 800xA through its IEC 61850 compatibility.

This includes:

 Motor starter and feeder modules (all sizes), which are equipped with measuring and

communication electronic device MControl

 Motor starter and feeder modules (all sizes), which are equipped with intelligent device,

UMC and M10x, communicates to MLink.

 Circuit breakers connected to the switchgear communication with the interface MConnect

 Circuit breakers connected to the switchgear communication with the interface MLink

Excluded from supervision in MService are all modules not connected to the internal switchgear

communication such as MSpeed (Variable Speed drives in MNS iS) and conventional modules.

REF611 is a dedicated feeder protection relay designed for the protection, control, 

measurement and supervision of utility substations and industrial power systems.

The feeder protection relay REF611 can be supplied either with directional or non-directional overcurrent and earth-fault protection. 

Directional earth-fault protection is mainly used in isolated neutral or compensated networks, 

whereas the non-directional earth fault protection is intended for directly or low-impedance earthed neutral networks.

REF611 is a member of ABB’s Relion® product family and part of its 611 protection and control series of relays.

Fieldbus

MLink can include Fieldbus communication to DCS. The type of Fieldbus must be selected

before ordering the MLink type. The Fieldbus specific information (PROFIBUS, MODBUS etc.)

can be found in the following documents:

MNS iS Interface Manual Profibus

MNS iS Interface Manual Modbus

MNS iS Interface Manual Profinet IO

REB611 ABB Busbar protection REB611

REX521GHLPSH51G Feeder protection relay ABB

REX521GBHPSB01G Feeder protection relay ABB

REX521GHHPLH50G Feeder protection relay ABB

REX521GHHGSH07G Feeder protection relay ABB

REU610CCVVHCNN ABB Voltage relay REU610

REA103-AA ABB Arc fault protection module – Expansion module

REU610CVVHCHG01 ABB Voltage relay REU610

REX521GHHGSH50G ABB Feeder protection relay REX 521

RET615J ABB Transformer protection and control

REM615J ABB Motor protection and control REM615 IEC

REU523B409BAA ABB Over- and undervoltage relay REU 523

REU610CVVHCNN ABB Voltage relay REU610

REF541KM115AAAA ABB Feeder terminal REF 541

REF541DM115AAAA ABB Feeder terminal REF 541

REF620E_F NBFNAAAANDA1BNN1XF IEC feeder protection and measurement and control device ABB

REF615E_G HBFEAEAGNDA1ABA1XG Feeder protection and control ABB