BE1-851E Enhanced Overcurrent Protection System

1 BE1-851 EUHW-311-09P. O. BOX 269 HIGHLAND, ILLINOIS, 62249 PHONE 618-654-2341 FAX 618-654-2351BE1-851 EENHANCEDOVERCURRENTPROTECTION SYSTEMThe BE1- 851e is an Enhanced Overcurrent Protection System based on the design ofthe BE1-851, a multifunction, numeric relay that provides three phase, ground, andnegative sequence Overcurrent Protection with four shot recloser, breaker failure,breaker monitoring, control, and metering functions in an integrated Includes two additional Control Outputs as compared to the BE1-851. Allows the user to select the optimal response characteristic separately for phaseand ground elements. Choose between fundamental, RMS, or average sensingalgorithms. BEST logic provides the user with complete flexibility in configuring a protectionand control System . User programmable variable and switch names make theserelays completely self documenting. Programmable LCD display allows the relay to replace local indication and controlfunctions, such as panel metering, alarm annunciation, and control switches.

2 Three independent communication ports with protocol support allows integrationwith distributed control systems. Real Time Clock with 8 hour capacitor ride through and optional battery backup. Available in a fully drawout case configuration. FEATURESP ages 2 and 3 APPLICATIONSPage 3 FUNCTIONALDESCRIPTIONP ages 4-7 BEST logicPage 8 SPECIFICATIONSP ages 9 and 10 ORDERINGINFORMATIONPage 11 INSTRUCTION MANUALMODBUS INSTRUCTION MANUALR equest publication 9289900790 Request publication 9289900791 DNP INSTRUCTION MANUALR equest publication 9289900792 ADDITIONAL INFORMATIONWINDOWS SOFTWAREI nterface for setting and communicating with Basler Protection productsRequest BESTCOMS for BE1- 851e (includes "settings compare" feature)An evaluation copy of BESTWAVEPlus program and manual for viewingoscillography files stored in COMTRADE format are provided with the and updates of the program may be obtained FUNCTIONS4350 51 62BF 79 101 DNP 3 OptionOptionModbusBE1-851E2 FEATURESPROTECTION Phase, Neutral, and Negative SequenceInstantaneous Overcurrent elements with settabletime delay.

3 50TP, 150TP, 50TN, 150TN, 50TQ,150TQ Phase, Neutral, and Negative Sequence TimeOvercurrent elements: 51P, 51N, 51Q All and IEC timing curves plus user program-mable curve Responds to either Average AC, Fundamental, orWide band RMS to 7th harmonic Minimizes transient overreach and overtravel onovercurrent elements Separate ground current input Breaker Failure Protection function: BF Two general purpose logic timers: 62, 162 Programmable Logic using BEST logic Four Protection setting groups with external orautomatic (cold load pickup, load, unbalance,recloser shot) selection modesCONTROL Four shot recloser with zone sequence coordina-tion and sequence controlled protective elementblocking functions Virtual breaker control switch controllable fromboth HMI and com. ports: 101 Four virtual selector switches controllable fromboth HMI and com. ports: 43, 143, 243, 343 INSTRUMENTATION Real time A, B, C phase, neutral, and negativesequence currents 1% meter accuracy down to 10% of nominal currentREPORTS Current demands for phase, neutral, and negativesequence currents magnitudes and time stampsare recorded for today's peak, yesterday's peak,and peak since reset Breaker operations counter and contactinterruption dutyFAULT RECORDING 255 event sequence of events report with I/O andalarm sub-reports Fault Reporting; 1 or 2 oscillography records perfault report Fault summary reports.

4 Two most recent FaultSummary Records saved to non-volatile memory 16 fault records, 15 cycles long @ 24 samples/cycle COMTRADE formatCOMMUNICATION PORTS Three independent general purpose communica-tion ports- Front RS-232 ASCII communications- Rear RS-232 ASCII communications- Rear RS-485 ASCII, Modbus , DNP or other common protocols IRIG-B time sync (unmodulated)SELF TEST AND ALARM FUNCTIONS Relay fail, major alarm, and minor alarm LEDs,and fail-safe alarm output contact (optionalnormally open or normally closed) Extensive internal diagnostics monitor all internalfunctions of the relay More than 20 additional alarm points programmable for major or minor priorityIncluding:- Reclose fail and lockout- Phase demand overload alarm- Neutral and negative sequence unbalance demandalarms- Three breaker alarm points programmable for slowtrip, interruption duty threshold, or operations counter- Trip circuit voltage and continuity monitor- Close circuit monitor via BEST logicPROGRAMMABLE I/O Four programmable inputs Seven programmable outputs and one dedicatedprogrammable alarm outputHARDWARE FEATURES Full drawout- H1:Half-rack Active CT technology for low burden andincreased dynamic range Flash Memory for upgrading embeddedprogramming without changing chips Real Time Clock with 8 hour capacitor ridethrough and optional battery backup Integral HMI with 2x16 character display Wide range ac/dc power supply options providelong hold up time to ride through dips on acpower source.

5 (100 ms with 4 output relaysenergized, upon complete loss of source. Startingvoltage 125 Vac for Option 1 (48/125 Vac/dc) and250 Vac for Option 2 (125/250 Vac/dc))BE1-851E3 APPLICATIONSThe BE1- 851e Enhanced Overcurrent Protection System provides three phase, ground, and negative sequenceovercurrent Protection and is intended for use in any non-directional Overcurrent Protection application. Its uniquecapabilities make it ideally suited for applications with the following requirements: Applications that require low burden to extend the linear range of CTs. Applications that require the flexibility provided by wide setting ranges, multiple setting groups, and multiplecoordination curves in one unit. Applications that require the economy and space savings provided by a multifunction, multiphase unit. This oneunit can provide all of the Protection , as well as local and remote indication, metering, and control functionsrequired on a typical circuit. Applications that require communication capability.

6 Applications that require specific current response The fundamental digital signal processing (DSP) algorithm provides rejection of harmonics and low The RMS DSP algorithm provides true wide band RMS The average DSP algorithm provides a flat response characteristic over a wide frequency range. Applications where bus Protection is provided by a high speed bus Overcurrent blocking scheme instead of adedicated bus differential circuit. Applications where the capabilities of intelligent electronic devices (IEDs) are used to decrease relay andbreaker maintenance costs. Applications where additional control outputs are required beyond what is provided with the , continuedFigure 1 - Advanced HMI (Human Machine Interface)BE1-851 EFUNCTIONAL DESCRIPTIONThe BE1- 851e is a multifunction, numeric relay thatprovides a comprehensive mix of protective, controland metering functions in an integrated System . Thissystem is suitable for any nondirectional overcurrentapplication including feeder applications, generatorapplications, cogeneration applications, and trans-former BE1- 851e has the unique ability to provide specificcurrent response characteristics.

7 It does this in threedifferent ways: The Fundamental twenty-four sample per cycleDigital Signal Processing (DSP) algorithm providesrejection of harmonics and low transient overreach. The RMS DSP algorithm provides true wide bandRMS measurement. The Average DSP algorithm provides a flatresponse characteristic over a wide characteristics are independently settable forphase and neutral unit has one set of three phase and neutral currentsensing inputs to provide all common protectivefunctions for substation and feeder half rack case is fully drawout with current circuitshorting provisions. Two Basler Electric half rack IEDs(Intelligent Electronic Devices) such as primary andbackup BE1- 851e or the BE1-951 or BE1-GPS100 canbe dovetailed together to mount in a standard 19"equipment rack with no special mounting independent communications ports, along withbuilt-in support for Modbus and other commonprotocols, provide easy access to integrating theprotection, control, metering, and status monitoringfunctions into a substation automation System .

8 Thestandard IRIG-B port provides time synchronizationfrom a master time metering provides amp and unbalanceloading telemetry for the protected circuit. Contactsensing inputs and alarm monitoring functions providereal time status information. Remote control is providedby virtual control and selector switches with select-before-operate control of programmable programmable logic provides the user withhigh flexibility in configuring a Protection and of the Protection and control functions in theBE1- 851e is implemented as an independent functionblock that is equivalent to its single function, discretedevice counterpart. Each independent function blockhas all the inputs and outputs that the discretecomponent counterpart might have. Figure 6 showseach of the independent function blocks available foruse in the BE1- 851e . Programming BEST logic isequivalent to choosing the devices required by yourprotection and control scheme and drawing schematicdiagrams to connect the inputs and outputs to obtainthe desired operational BE1- 851e relay can store, as user settings, oneuser programmable, custom logic scheme.

9 To saveyou time, several preprogrammed logic schemes havealso been provided. Any of the preprogrammedschemes may be copied into the logic settings withoutmaking any additional BEST logic provides the Protection engineer with theflexibility to set up this powerful multifunction systemwith the same freedom that was once enjoyed withsingle function, discrete devices. It is no longer neces-sary to compromise your standard Protection andoperating practices to deal with the limitations inprogrammability of previous multifunction 2A, 2B, 2C, and 3 show typical externalconnections, and Figure 5 shows rear panel 2A - Typical External Sensing Connections - Feeder Breaker ApplicationFigure 2B - Typical External Sensing Connections -Transformer Backup ApplicationFUNCTIONAL DESCRIPTION, continued5 Figure 2C - Alternate Connections for INBE1-851 EFigure 3 - Typical External ConnectionsFUNCTIONAL DESCRIPTION, continued6 Figure 4 - Typical Application Single LineBE1-851 EFUNCTIONAL DESCRIPTION, continuedFigure 5 - BE1- 851e Rear Panel Connections7BE1-851 EFigure 6 - BEST logic Function Blocks8BE1-851E95 Amp CURRENT INPUTSC ontinuous:20 AmpsOne Sec.

10 Rating: 400 AmpsSaturation limit:150 AmpsMax. Burden:<10 milliohms1 Amp CURRENT INPUTSC ontinuous:4 AmpsOne Sec. rating:80 AmpsSaturation limit:30 AmpsMax. Burden:<22 milliohmsA/D CONVERTERSS ampling Rate:24/cyclePOWER SUPPLYO ption 1:DC Range 35-150 VAC Range 55-135 VOption 2:DC Range 90-300 VAC Range 90-270 VOption 3:DC Range 17-32 V (down to8 V for momentary dips)Burden:6 W continuous, 8 W maximumwith all outputs energizedOUTPUT CONTACTSMake and carry:30 A ( sec)Continuous:7 A DC (L/R= )@ 125 Vdc or 250 VdcCONTROL INPUTSW etting Voltage range: Same as control powersupply option. Low Range High RangeTurn-on Turn-onPower SupplyVoltage Voltage OptionRange Burden Range Burden1) 48/125 Vac/Vdc26-38 Vac/dc23k ohms 69-100 Vac/dc53 k ohms2) 125/250 Vac/Vdc69-100 Vac/dc66k ohms 138-200 Vac/dc123 k ohms3) 24 Vdc N/AN/AApprox.