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BE1-87G - General Information 1-5SPECIFICATIONSBE1-87G relays are available in single-phase and three-phase configurations, and with the following fe
1-6 BE1-87G - General InformationPickup Accuracy(1 Ampere) For IR 1 ampere, ±5% of the operate pickup characteristic or 25milliamperes whichever i
BE1-87G - General Information 1-7IsolationIn accordance with ANSI/IEEE C37.90, one minute dielectric (highpotential) tests as follows:All circuits to
BE1-87G - Human Machine Interface (Controls And Indicators) 2-1SECTION 2 • HUMAN MACHINE INTERFACE(Controls And Indicators) DESCRIPTIONTable 2-1 list
BE1-87G - Functional Description 3-1SECTION 3 • FUNCTIONAL DESCRIPTIONGENERALBE1-87G Variable Percentage Differential Relays are static devices that p
3-2 BE1-87G - Functional Description05101520253035012345678910CURRENT(AMPS)VOLTAGE(VOLTS)0510152025300 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2CURRENT(AMPS
BE1-87G - Functional Description 3-3Figure 3-3. Sensing Input Range 2 (1 Ampere),Stabilizing Reactor Impedance CharacteristicsBandpass FiltersOutputs
3-4 BE1-87G - Functional Descriptionsupply status output relay continually energized and its output contacts open. If the power supply output voltage
BE1-87B - Installation 4-1Figure 4-1. S1 Case, Outline Dimensions, Front ViewSECTION 4 • INSTALLATIONGENERALWhen not shipped as part of a control or
4-2 BE1-87B - InstallationFigure 4-2. S1 Case, Double-Ended, Outline Dimensions, Semi-Flush Mounting, Side ViewFigure 4-3. S1 Case, Double-Ended, Ou
BE1-87G - Introduction iW A R N I N G !To avoid personal injury or equipment damage, onlyqualified personnel should perform the procedurespresented i
BE1-87B - Installation 4-3Figure 4-4. S1 Case, Double-Ended, Panel Drilling Diagram, Semi-Flush MountingFigure 4-5. S1 Case, Double-Ended, Panel Dr
4-4 BE1-87B - InstallationStabilizing ReactorThe stabilizing reactor for a three-phase relay is mounted on the rear of the relay. For projection moun
BE1-87B - Installation 4-5WARNINGRelays manufactured prior to July 22, 1991 (EIA date code symbol 9129 and previous)do NOT have case jumpers between
4-6 BE1-87B - InstallationFigure 4-8. Typical DC Control ConnectionsFigure 4-9. Single-Phase Sensing Input Connections
BE1-87B - Installation 4-7Figure 4-10. Three-Phase Sensing Input Connection
4-8 BE1-87B - InstallationFigure 4-11. Single-Phase Internal Connection Diagram
BE1-87B - Installation 4-9Figure 4-12. Three-Phase Internal Connection Diagram
BE1-87G - Testing And Setting 5-1CAUTIONTo avoid false tripping on three phase units, upper connection plug must be in placeprior to inserting or remo
5-2 BE1-87G - Testing And SettingWARNINGDuring testing, do NOT apply or generate continuous operate current greater than threeamperes. If the operate
BE1-87G - Testing And Setting 5-3Figure 5-2. Location of Assemblies (Single Phase Only)NON-COMPONENT SIDE OF LOWER MAGNETICS/SHIELD BOARDFigure 5-3.
ii BE1-87G - IntroductionCONFIDENTIAL INFORMATIONOF BASLER ELECTRIC COMPANY, HIGHLAND, IL. IT IS LOANED FORCONFIDENTIAL USE, SUBJECT TO RETURN ON REQ
5-4 BE1-87G - Testing And SettingNOTEOutput contacts may be NC or NO, depending on style of relay. Check continuity atterminals 1 and 10 with relay t
BE1-87G - Testing And Setting 5-5Figure 5-4. Sensing Input Range 1, Operating Characteristics
5-6 BE1-87G - Testing And SettingFigure 5-5. Sensing Input Range 2, Operating Characteristics
BE1-87G - Testing And Setting 5-7RESTRAINT CURRENT (AMPERES)RESTRAINT CURRENT (AMPERES)0248610121416182005 1015202530354001 2345678D2354-1404-30-96Ran
5-8 BE1-87G - Testing And SettingNOTEIf option B (current operated) targets are specified, the target is only operable when aminimum of 0.2 ampere is
BE1-87G - Testing And Setting 5-9NOTESensing Input Range 1: If R w is unknown, assume R w = 0.003 * N aSensing Input Range 2: If R w is unknown, assum
5-10 BE1-87G - Testing And SettingTable 5-1. Recommended Pickup SettingsVce(Lower Value)SFR1 1.5 2 3 4 20 0.2 0.4 0.5 0.8 1.6 50 0.2 0.4 0.4 0.5 0.
BE1-87G - Testing And Setting 5-11Id10004.16×30.15×200138.8304.6 × CT ratingInequality (1) is met with CT #2, but not with CT #1. However, since
5-12 BE1-87G - Testing And SettingInequality (1) is met with CT #2, but not with CT #1. However, since the maximum external fault current is only4.6
BE1-87G - Maintenance 6-1CAUTIONSubstitution of printed circuit boards or individual components does not necessarily meanthe relay will operate proper
BE1-87G - Introduction iiiCONTENTSSECTION 1 GENERAL INFORMATION 1-1Description ...1-1Applications ...
BE1-87G - Manual Change Information 7-1SECTION 7 • MANUAL CHANGE INFORMATIONSUMMARY AND CROSS REFERENCE GUIDEThis section contains information concern
iv BE1-87G - IntroductionCONTENTS - ContinuedSECTION 5 TESTING AND SETTING - ContinuedSensing Input Range 1, Operating Characteristics ... 5
BE1-87G - General Information 1-1WARNINGRelays manufactured prior to July 22, 1991 (EIA date code symbol 9129 and previous)do NOT have case jumpers b
1-2 BE1-87G - General InformationFigure 1-1. Typical Single-Phase Application SchemeFigure 1-2. Typical Three-Phase Application Scheme
BE1-87G - General Information 1-3Variable Restraint CharacteristicAt high current levels, the inevitable difference in the saturation characteristics
1-4 BE1-87G - General InformationBE1-87GModel NumberGThree-phase sensing input 1Sensing range switch selectable for 0.1, 0.15, 0.2, 0.4, 0.5, 0.8, or
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