ABB REM630 Product Manual

Also see for REM630: Applications manual Applications manual

Contents

ABB REM630 Product Manual Manual pdf 11 page image

5. ControlThe IED incorporates local and remotecontrol functions. The IED offers a number offreely assignable binary inputs/outputs andlogic circuits for establishing bay control andinterlocking functions for circuit breakers andmotor operated switch-disconnectors. TheIED supports both single and double busbarsubstation busbar layouts. The number ofcontrollable primary apparatuses depends onthe number of available inputs and outputs inthe selected configuration. Besidesconventional hardwired signaling alsoGOOSE messaging according to IEC61850-8-1 can be used for signal interchangebetween IEDs to obtain required interlockings.6. MeasurementThe IED continuously measures the phasecurrents, the symmetrical components of thecurrents and the residual current. The IEDalso measures phase and phase-to-phasevoltages, symmetrical components of thevoltages and the residual voltage. In addition,the IED monitors active and reactive power,power demand value over a user-selectablepre-set time frames as well as cumulativeactive and reactive energy of both directions.Line frequency, the thermal overload of theprotected object, and the phase unbalancevalue based on the ratio between thenegative sequence and positive sequencecurrent are also calculated. Cumulative andaveraging calculations utilize the non-volatilememory available in the IED. Calculatedvalues are also obtained from the protectionand condition monitoring functions of the IED.The values measured are accessed locally viathe front-panel user interface of the IED orremotely via the communication interface ofthe IED. The values are also accessed locallyor remotely using the web-browser baseduser interface.7. Disturbance recorderThe IED is provided with a disturbancerecorder featuring up to 40 analog and 64binary signal channels. The analog channelscan be set to record the waveform of thecurrents and voltage measured. The analogchannels can be set to trigger the recordingwhen the measured value falls below orexceeds the set values. The binary signalchannels can be set to start a recording onthe rising or the falling edge of the binarysignal. The binary channels are set to recordexternal or internal IED signals, for examplethe start or operate signals of the protectionfunctions, or external blocking or controlsignals. Binary IED signals such as aprotection start or trip signal, or an externalIED control signal over a binary input can beset to trigger the recording. In addition, thedisturbance recorder settings include pre- andpost triggering times.The disturbance recorder can store up to 100recordings. The number of recordings mayvary depending on the length of therecording and the number of signalsincluded. The disturbance recorder controlsthe Start and Trip LEDs on the front-paneluser interface. The operation of the LEDs isfully configurable enabling activation whenone or several criteria, that is, protectionfunction starting or tripping, are fulfilled.The recorded information is stored in a non-volatile memory and can be uploaded forsubsequent fault analysis.8. Event logThe IED features an event log which enableslogging of event information. The event logcan be configured to log informationaccording to user pre-defined criteriaincluding IED signals. To collect sequence-of-events (SoE) information, the IEDincorporates a non-volatile memory with aMotor Protection and Control 1MRS756977 DREM630Product version: 1.1 Issued: 2011-05-18ABB 11