Basler BE1-46N Instruction Manual
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Basler BE1-46N Instruction Manual

Negative sequence overcurrent relay
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INSTRUCTION MANUAL
FOR
NEGATIVE SEQUENCE OVERCURRENT
RELAY
BE1-46N
Publication Number: 9 1700 00 990
Revision: F
02/01

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Summary of Contents for Basler BE1-46N

  • Page 1 INSTRUCTION MANUAL NEGATIVE SEQUENCE OVERCURRENT RELAY BE1-46N Publication Number: 9 1700 00 990 Revision: F 02/01...
  • Page 2 INTRODUCTION This manual provides information concerning the operation and installation of the BE1-46N Negative Sequence Overcurrent Relay. To accomplish this, the following is provided. > Specifications > Functional Description > Mounting Information > Operational Test Procedure W A R N I N G !
  • Page 3 February 2001 CONFIDENTIAL INFORMATION OF BASLER ELECTRIC COMPANY, HIGHLAND, IL. IT IS LOANED FOR CONFIDENTIAL USE, SUBJECT TO RETURN ON REQUEST, AND WITH THE MUTUAL UNDERSTANDING THAT IT WILL NOT BE USED IN ANY MANNER DETRIMENTAL TO THE INTEREST OF BASLER ELECTRIC COMPANY.

  • Page 4: Table Of Contents

    Typical AC Sensing Connections ......4-10 Typical Internal Connections ......4-11 BE1-46N Introduction...
  • Page 5 Summary and Cross Reference Guide ........7-1 BE1-46N Introduction...

  • Page 6: Section 1 • General Information

    Electrical characteristics and operational features included in a specific relay are defined by a combination of letters and numbers that constitute the device style number. The model number, BE1-46N, designates the relay as a Basler Electric Class 100 Negative Sequence Overcurrent Relay. The style number together with the model number describe the features and options in a particular device and appear on the front panel, drawout cradle, and inside the case assembly.

  • Page 7: Style Number Example

    Style Number Example The following style number identification chart illustrates the features and options for BE1-46N relays. For example, if the style number were BE1-46N G1H B8S B1B1F, the relay would have the following features: BE1-46N Model number. Three-phase negative sequence current sensing.

  • Page 8: Specifications

    Targets may be specified as either internally operated, or current operated by a minimum of 0.2 ampere through the output trip circuit. When current operated, the output circuit must be limited to 30 amperes for 0.2 seconds, 7 amperes for 2 minutes, and 3 amperes continuously. BE1-46N General Information...
  • Page 9 3WCNKHKGF VQ #05++''' % 5VCPFCTF 5WTIG 9KVJUVCPF %C RCDKNKV[ 59% 6GUVU HQT 2TQVGEVKXG 4GNC[U CPF 4GNC[ 5[UVGOU In standard tests, the relay has withstood 15 g in each of three mutually Shock perpendicular planes without structural damage or degradation of perfor- mance. BE1-46N General Information...
  • Page 10 UL Recognized for voltages greater than 250 volts. -40  C (-40  F) to 70  C (158  F). Operating Temperature -65  C (-85  F) to +100  C (+212  F). Storage Temperature 13.5 pounds maximum. Weight BE1-46N General Information...

  • Page 11: Section 2 • Human-Machine Interface

    SECTION 2 • HUMAN-MACHINE INTERFACE CONTROLS AND INDICATORS Table 2-1. BE1-46N Controls and Indicators (Refer to Figure 2-1) Locator Control or Indicator Function PICKUP (Trip Level) Front-panel thumbwheel switch provides selection of the negative sequence overcurrent pickup point that, when exceeded, initiates timing.
  • Page 12 Control or Indicator Function LED illuminates when level of I exceeds the ALARM (trip ALARM LED level) setting. LED illuminates when level of I exceeds PICKUP (trip PICKUP LED level) setting. Figure 2-1. Location of Controls and Indicators BE1-46N Human-Machine Interface...

  • Page 13: Section 3 • Functional Description

    This improves resolution and accuracy. Successive approximation measuring techniques allow the microprocessor to measure the level of I digital number with only the most significant digit set high is sent from the microprocessor to the digital to BE1-46N Functional Description...

  • Page 14: Microprocessor

    Manufacturing Company part number 9962 or equivalent is recommended.) POWER SUPPLY Basler Electric enhanced the power supply design for unit case relays. This new design created three, wide range power supplies that replace the five previous power supplies. Style number identifiers for these power supplies have not been changed so that customers may order the same style numbers that they ordered previously.

  • Page 15: Power Supply Status Output

    = time in seconds = instantaneous negative sequence current = negative phase sequence overcurrent expressed in per unit of full load stator current per unit Where: Full Load Stator Current BE1-46N Functional Description...

  • Page 16: Reference Level (Tap Value)

    BE1-46N relays are featured with the following settings: TAP ADJUST and TAP ADJUST CAL to establish a reference level (full load stator current) ALARM and PICKUP K SET MAX TIME (X 10 SEC) Reference Level (Tap Value) An adjustment is provided to establish the stator full load current reference level I .

  • Page 17: Calculation Example

     .I if, I single phase then, I pu single phase nominal nominal Solving for I nominal Equation A is: single phase nominal Solving for I single-phase 3(I single phase nominal Equation B is: BE1-46N Functional Description...

  • Page 18: Method 2, Three-Phase

    PICKUP LED is ON. The nominal current value is now set at 3.92 amperes (for 5 A CT) or 0.784 amperes (for 1 A CT) for this application. BE1-46N Functional Description...

  • Page 19: Further Considerations

    Accordingly, the MAX TIME setting should permit such possible action. Set MAX TIME at 500 seconds (8.3 minutes). Reference 1. IEEE Committee Report, A Standard for Generator Continuous Unbalanced Current Capability , IEEE Transactions, PAS 92, No. 5, Sept./Oct. 1973, pp 1547-49. BE1-46N Functional Description...
  • Page 20 (defined by the PICKUP setting) to persist. If it is determined that this value is 500 seconds, set the thumbwheel at 50. Since (I t = K establishes the limit of operation, t = 25 divided by 0.12 = 1736 seconds. BE1-46N Functional Description...

  • Page 21: Characteristic Curves

    Figure 3-2. Characteristic Curves BE1-46N Functional Description...

  • Page 22: Section 4 • Installation

    SECTION 4 • INSTALLATION GENERAL When not shipped as part of a control or switchgear panel, BE1-46N Negative Sequence Overcurrent relays are shipped in sturdy cartons to prevent damage during transit. Immediately upon receipt of a relay, check the model and style number against the requisition and packing list to see that they agree. Visually inspect the relay for damage that may have occurred during shipment.

  • Page 23: S1 Case, Outline Dimensions, Front View

    D 1 4 2 7 - 0 1 2-02-01 Figure 4-1. S1 Case, Outline Dimensions, Front View BE1-46N Installation...

  • Page 24: S1 Case, Panel Drilling Diagram, Semi-Flush Mounting

    Figure 4-2. S1 Case, Panel Drilling Diagram, Semi-Flush Mounting BE1-46N Installation...
  • Page 25 Figure 4-3. S1 Case, Double-Ended, Semi-Flush Mounting, Outline Dimensions, Rear View BE1-46N Installation...
  • Page 26 D 1 4 2 7 - 2 7 0 2 / 2 0 0 1 Figure 4-4. S1 Case, Double-Ended, Semi-Flush Mounting, Side View BE1-46N Installation...
  • Page 27 Figure 4-5. S1 Case, Double-Ended, Projection Mounting, Panel Drilling Diagram, Rear View BE1-46N Installation...
  • Page 28 DETAIL A-A OVER THE BOSS TO TIGHTEN THE D1427-03 02/2001 Figure 4-6. S1 Case, Double-Ended, Projection Mounting, Side View BE1-46N Installation...

  • Page 29: Remote Meter Dimensions And Drilling Diagram

    Typical internal connections are shown in Figure 4-10. Relays that operate using phase currents to determine the negative sequence component are sensitive to phase rotation. BE1-46N Negative Sequence Overcurrent Relays are phase rotation sensitive. All connections shown in this manual assume ABC rotation.

  • Page 30: Typical Dc Control Connections

    Figure 4-8. Typical DC Control Connections BE1-46N Installation...

  • Page 31: Typical Ac Sensing Connections

    Figure 4-9. Typical AC Sensing Connections 4-10 BE1-46N Installation...

  • Page 32: Typical Internal Connections

    Figure 4-10. Typical Internal Connections BE1-46N Installation 4-11...

  • Page 33: Testing

    SECTION 5 • TESTING GENERAL Although the BE1-46N is designed to monitor three-phase currents, verification of the relay pickup and dropout can be accomplished by using a single-phase source. To verify all three phases using a single- phase current source, repeat the operational test procedure for each of the three phases.

  • Page 34: Timing

    MAX TIME to 10 NOTE Three seconds after the closing of switch A the ALARM input contacts actuate. (Time delay is factory set at 3 seconds.) Step 3. Close switch A to apply current to relay and initiate timer. BE1-46N Testing...

  • Page 35: Max Time

    Step 2. Adjust current source to apply 2.4 A (25% I or 0.25 pu) to the phase A input and set the front panel controls as follows: PICKUP and ALARM to 05. K-SET to 10. MAX TIME to 10. BE1-46N Testing...
  • Page 36 We find t = 160 seconds. But, because the MAX TIME was set for 10 (100 seconds), trip occurred at 100 seconds. This concludes the operational test. To test all three phase inputs, repeat the test procedures applying the single-phase current source input to phase B inputs and then phase C inputs. BE1-46N Testing...

  • Page 37: General

    Always test the relay before placing it in operation. Where special components are involved, Basler Electric part numbers may be obtained from the number stamped on the component or assembly, the schematic, or parts list. These parts may be ordered directly from Basler Electric.

  • Page 38: Summary And Cross Reference Guide

    Added “Max Time” to Section 3. Timing in Section 5, changed Step 5 from “MAX TIME” to “time required for.” Changed the format of the manual and corrected minor errors. Updated the drawings in section 4 to reflect the latest S1 Case 12263/02-09-01 drawings. BE1-46N Manual Change Information...

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