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Basler BE1-67 Instructions Manual

Directional overcurrent relay
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INSTRUCTION MANUAL
FOR
DIRECTIONAL OVERCURRENT RELAY
BE1-67
CHARACTERISTIC
ANGLE
90
0
DEGREES
BE1-67
DIRECTIONAL
OVERCURRENT
Style No. XXX XXX XXXXX
R
Serial No. XXXXXXXXXXXX
TIME
INST
Publication: 9170900990
Revision: H
08/07

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Summary of Contents for Basler BE1-67

  • Page 1 INSTRUCTION MANUAL DIRECTIONAL OVERCURRENT RELAY BE1-67 CHARACTERISTIC ANGLE DEGREES BE1-67 DIRECTIONAL OVERCURRENT Style No. XXX XXX XXXXX Serial No. XXXXXXXXXXXX TIME INST Publication: 9170900990 Revision: H 08/07...
  • Page 3 INTRODUCTION This instruction manual provides information about the operation and installation of the BE1-67 Directional Overcurrent Relay. To accomplish this, the following information is provided: • General Information and Specifications • Controls and Indicators • Functional Description • Installation • Testing...
  • Page 4 August 2007 CONFIDENTIAL INFORMATION of Basler Electric, Highland Illinois, USA. 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.
  • Page 5 REVISION HISTORY The following information provides a historical summary of the changes made to the BE1-67 instruction manual (9170900990). Revisions are listed in reverse chronological order. Manual Revision and Date Change • H, 08/07 Enhanced the readability of various figures throughout the manual.
  • Page 6 This page intentionally left blank. BE1-67 Introduction 9170900990 Rev H...
  • Page 7 SECTION 1 • GENERAL INFORMATION ....................1-1 SECTION 2 • CONTROLS AND INDICATORS ..................2-1 SECTION 3 • FUNCTIONAL DESCRIPTION ................... 3-1 SECTION 4 • INSTALLATION ........................4-1 SECTION 5 • TESTING ..........................5-1 APPENDIX A • CHARACTERISTIC CURVES..................A-1 9170900990 Rev H BE1-67 Introduction...
  • Page 8 This page intentionally left blank. BE1-67 Introduction 9170900990 Rev H...

  • Page 9: Table Of Contents

    Figure 1-7. Significant Faults for Breaker A ....................1-6 Figure 1-8. Coordination of Time Characteristic Curves ................1-8 Figure 1-9. Style Number Identification Chart ................... 1-9 Figure 1-10. Typical Instantaneous Response Time................1-12 Figure 1-11. Characteristic Angle ......................1-12 9170900990 Rev H BE1-67 General Information...
  • Page 10 Tables Table 1-1. Selection Considerations for Characteristic Curves..............1-2 Table 1-2. Required Breaker Settings ....................... 1-8 Table 1-3. Sensing Input Ranges and Connections................1-11 Table 1-4. Power Supply Specifications ....................1-13 BE1-67 General Information 9170900990 Rev H...

  • Page 11: Section 1 • General Information

    Figure 1-1. Single-Phase Directional Overcurrent Figure 1-1a shows the connections to the sensing circuits for a single phase BE1-67. Figure 1-1b illustrates the phasor quantities monitored by the relay for a unity power factor condition, and for a single phase fault.

  • Page 12: Limited Region Of Operation

    This angle is then used as the maximum torque angle and any current flowing in the half-plane defined by this angle is considered to be in the trip direction. Figure 1-2 illustrates the trip and non-trip directions. Figure 1-2. Trip Direction Defined BE1-67 General Information 9170900990 Rev H...

  • Page 13: Load Current Approaches Fault Current

    90 degrees. This limits the trip region area to only a portion of the half-plane usually defined as the trip direction. This limited region-of- operation characteristic (shown in Figure 1-4) is available by specifying option 3-5 or 3-6. 9170900990 Rev H BE1-67 General Information...

  • Page 14: Application

    In the case where two sources of power can supply fault current, as shown in Figure 1-6, directional overcurrent relays will need to be applied to each end of the protected lines to prevent undesired tripping. BE1-67 General Information 9170900990 Rev H...

  • Page 15: Sample Application Calculations

    Figure 1-6. Substations Fed from Two Sources SAMPLE APPLICATION CALCULATIONS In this sample illustrated by Figure 1-7, a three-phase, 60 hertz, BE1-67 relay is used at breaker position A. Assumed options for the relay include switch-selectable characteristic curves, switch-selectable characteristic angle and a directional instantaneous output.

  • Page 16: Pickup

    Returning to Figure 1-7, if it is assumed that the maximum lead current is 1,200 amperes for line AC and a maximum CT ratio of 400:1, then: Timed pickup setting = (1200) (1 ÷ 400) (1.25) = 3.75 amperes (The 1.25 factor represents a margin of safety.) BE1-67 General Information 9170900990 Rev H...

  • Page 17: Analysis Of Fault L

    D(L) Based on these fault currents, the BE1-67 relay at A will pickup and begin to time out. But the primary concern is that the relay at D trips before the one at A. This is accomplished by selecting the appropriate pickup, time dial, and characteristic for the 67 device.

  • Page 18: Conclusions

    67 will see fault N, but that 67 will not. (The response of the BE1-67 Directional Unit is approximately 1 cycle, thereby blocking the overcurrent unit before it will see the fault current in the reverse direction.)

  • Page 19: Model And Style Number

    Refer to Figure 1-9 for the Style Number Identification Chart. Model numbers BE1-67 designate the relay as a Basler Electric, Class 100, Phase Directional Overcurrent Relay. The model number together with the style number describes the options included in a specific device and appears on the front panel, drawout cradle and inside the case assembly.

  • Page 20: Specifications

    Switch selectable characteristic angle and power supply status output Semi-flush case mounting, M1-size case SPECIFICATIONS BE1-67 Phase Directional Overcurrent Relays are available in either single-phase or three-phase configurations with the following features and capabilities. Current Sensing Input(s) The unit is designed to operate from the secondary of a standard current transformer rated at 5 amperes.

  • Page 21: Time Overcurrent Pickup

    TIME DIAL, TAP, and TAP CAL settings at 25° Instantaneous Overcurrent Pickup Range Continuously adjustable over the range of one to 40 times the pickup setting established for the time overcurrent element. Response Time See Figure 1-10. 9170900990 Rev H BE1-67 General Information 1-11...

  • Page 22: Pickup Accuracy

    Figure 1-11 for which tripping will be allowed. The characteristic angle of the relay is defined as the angle between I and its ordinate, I. Note that I is normal to the characteristic boundary. Resolution of direction requires less than 1 cycle. Figure 1-11. Characteristic Angle 1-12 BE1-67 General Information 9170900990 Rev H...

  • Page 23: Sensitivity

    1.0 Vac threshold, relay operation will be inhibited. Characteristic Angle Adjustment The BE1-67 is available with two types of adjustment for the characteristic angle. (a) Continuously adjustable over the range of 0 to 90° (b) Switch selectable settings of 30°, 45°, 60° and 75°...

  • Page 24: Output Circuits

    In standard tests, the relay has withstood 2 g in each of three mutually perpendicular planes, swept over the range of 10 to 500 Hz for a total of six sweeps, 15 minutes each sweep without structural damage or degradation of performance. 1-14 BE1-67 General Information 9170900990 Rev H...

  • Page 25: Section 2 • Controls And Indicators

    SECTION 2 • CONTROLS AND INDICATORS ..................2-1 Figures Figure 2-1. BE1-67, Three-Phase Relay with Characteristic Angle Control Knob ........2-3 Figure 2-2. BE1-67, Three-Phase Relay with Characteristic Angle and Limited Region of Operation ..2-4 Figure 2-3. Location of Assemblies, Controls, and Indicators..............2-5 Tables Table 2-1.
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  • Page 27 One LED is included for each phase monitored by the relay. LED’s may be used to determine the actual pickup setting of the relay during testing. 9170900990 Rev H BE1-67 Controls and Indicators...
  • Page 28 B6 Very Inverse B7 Extremely Inverse E2 BS142 Long Inverse E4 BS142 Inverse (1.3 sec) E BS142 Inverse (2.9 sec) A-10 E6 BS142 Very Inverse A-11 E7 BS142 Extremely Inverse C, D, E, F A-12 BE1-67 Controls and Indicators 9170900990 Rev H...
  • Page 29 CHARACTERISTIC ANGLE DEGREES BE1-67 DIRECTIONAL OVERCURRENT Style No. XXX XXX XXXXX Serial No. XXXXXXXXXXXX TIME INST Figure 2-1. BE1-67, Three-Phase Relay with Characteristic Angle Control Knob 9170900990 Rev H BE1-67 Controls and Indicators...
  • Page 30 BE1-67 DIRECTIONAL OVERCURRENT Style No. XXX XXX XXXXX Serial No. XXXXXXXXXXXX TIME INST Figure 2-2. BE1-67, Three-Phase Relay with Characteristic Angle and Limited Region of Operation BE1-67 Controls and Indicators 9170900990 Rev H...
  • Page 31 Figure 2-3. Location of Assemblies, Controls, and Indicators 9170900990 Rev H BE1-67 Controls and Indicators...
  • Page 32 This page intentionally left blank. BE1-67 Controls and Indicators 9170900990 Rev H...
  • Page 33 Figure 3-1. Functional Block Diagram ....................... 3-1 Figure 3-2. Characteristic Angle ........................ 3-3 Figure 3-3. Limited Region of Operation ....................3-4 Tables Table 3-1. Current Sensing Input Connections ..................3-2 Table 3-2. Sensing Input Range and Setting .................... 3-2 9170900990 Rev H BE1-67 Functional Description...
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  • Page 35: Section 3 • Functional Description

    Figure 3-1. Functional Block Diagram INPUT CIRCUITS BE1-67 relays may be configured to sense either a single-phase current and a phase-to-phase voltage, or three -phase currents and three phase-to-phase voltages. (A three-phase unit is illustrated.) Current Sensing Internal current sensing transformers are designed to receive their input from the five ampere nominal secondary of a standard current transformer in the power system.

  • Page 36: Voltage Sensing

    The tripping characteristic of the relay is then defined by a line, that is, perpendicular to I . Note that the slight bow in this boundary about the origin is caused by the minimum sensitivity of the directional element: 0.02 ampere and 1.0 volt. BE1-67 Functional Description 9170900990 Rev H...

  • Page 37: Limited Region Of Operation

    Figure 3-2.) This region (angle as shown in Figure 3-3) may be reduced by the LIMITED REGION OF OPERATION control (a multi-turn potentiometer accessed through the front panel). The control is continuously adjustable (with reference to I in Figure 3-3) from ±5 degrees to ±90 degrees. 9170900990 Rev H BE1-67 Functional Description...

  • Page 38: Power Supply

    LOGIC CIRCUITS The logic circuits identified in the block diagram of Figure 3-1 and briefly described in the following paragraphs are intended to show functionally how the BE1-67 relay operates. Microprocessor The microprocessor fulfills many of the logic and signal processing functions described in the following paragraphs and performs all of the time overcurrent computations.

  • Page 39: Outputs

    LED is included for each phase monitored by the relay. LED's may be used to determine the actual pickup setting of the relay during testing. POWER LED's A red LED lights when the relay power supply is functioning. This provides a front panel indication of the relay status. 9170900990 Rev H BE1-67 Functional Description...

  • Page 40: Function Targets

    The ELEMENT targets are always type A (internally operated) targets. NOTE Prior to August 2007, BE1-67 target indicators consisted of magnetically latched, disc indicators. These mechanically latched target indicators have been replaced by the electronically latched LED targets in use today.
  • Page 41 Figure 4-7. DC Control Connections ......................4-8 Figure 4-8. Single-Phase AC Connections....................4-9 Figure 4-9. Three-Phase AC Connections ....................4-10 Figure 4-10. Single-Phase, Internal Connection Diagram............... 4-11 Figure 4-11. Three-Phase, Internal Connection Diagram ............... 4-12 9170900990 Rev H BE1-67 Installation...
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  • Page 43: Section 4 • Installation

    SECTION 4 • INSTALLATION INTRODUCTION BE1-67 relays are shipped in sturdy cartons to prevent damage during transit. Upon receipt of a relay, check the model and style number against the requisition and packing list to see that they agree. Inspect the relay for shipping damage.
  • Page 44 Figure 4-1. Outline Dimensions, Front View BE1-67 Installation 9170900990 Rev H...
  • Page 45 Figure 4-2. Outline Dimensions, Rear View 9170900990 Rev H BE1-67 Installation...
  • Page 46 Figure 4-3. Outline Dimensions, Side View - Semi-Flush Mounting BE1-67 Installation 9170900990 Rev H...
  • Page 47 Figure 4-4. Outline Dimensions, Side View - Projection Mounting 9170900990 Rev H BE1-67 Installation...
  • Page 48 Figure 4-5. Panel Drilling Diagram - Semi-Flush Mounting BE1-67 Installation 9170900990 Rev H...
  • Page 49 Figure 4-6. Panel Drilling Diagram - Projection Mounting 9170900990 Rev H BE1-67 Installation...

  • Page 50: Connections

    • Typical ac connections for single-phase relays are shown in Figure 4-8. • Typical ac connections for three-phase relays are shown in Figure 4-9. • Internal connections are shown in Figures 4-10 and 4-11. Figure 4-7. DC Control Connections BE1-67 Installation 9170900990 Rev H...
  • Page 51 Figure 4-8. Single-Phase AC Connections 9170900990 Rev H BE1-67 Installation...
  • Page 52 Figure 4-9. Three-Phase AC Connections 4-10 BE1-67 Installation 9170900990 Rev H...
  • Page 53 Figure 4-10. Single-Phase, Internal Connection Diagram 9170900990 Rev H BE1-67 Installation 4-11...
  • Page 54 Figure 4-11. Three-Phase, Internal Connection Diagram 4-12 BE1-67 Installation 9170900990 Rev H...

  • Page 55: Maintenance

    MAINTENANCE BE1-67 relays require no preventative maintenance other than a periodic operational check. If the relay fails to function properly, contact Technical Sales Support at Basler Electric to coordinate repairs. STORAGE This protective relay contains aluminum electrolytic capacitors which generally have a life expectancy in excess of 10 years at storage temperatures less than 40°C (104°F).
  • Page 56 This page intentionally left blank. 4-14 BE1-67 Installation 9170900990 Rev H...
  • Page 57 Figure 5-14. Characteristic Angle = 60 Degrees, Limited Region of Operation = 40 Degrees ....5-16 Tables Table 5-1. Pickup Values at Indicated TAP SELECT Position..............5-4 Table 5-2. Expected Timing Values at Five Times Pickup..............5-11 9170900990 Rev H BE1-67 Testing...
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  • Page 59: Section 5 • Testing

    91°. NOTE In order to have a 180° angle as the trip direction (90° or either side of the torque angle vector), it is necessary to set the LIMITED REGION OF OPERATION control to 91°. 9170900990 Rev H BE1-67 Testing...
  • Page 60 -1°. Then, starting from the maximum CW position, slowly rotate the LIMITED REGION OF OPERATION control CCW until the INHIBIT LED just lights. Step 11. Insure that the TEST/NORMAL switch (callout P of Figure 2-3) is in the NORMAL position. Figure 5-1. Single-Phase Test Setup BE1-67 Testing 9170900990 Rev H...

  • Page 61: Verification Testing

    TIMING LED again lights. Observe the input current level. This value should be within ±5% of 0.75 ampere (LOW range) or 2.25 amperes (HIGH range). This verifies the pickup accuracy of the tap A setting. 9170900990 Rev H BE1-67 Testing...

  • Page 62: Instantaneous Overcurrent Pickup Test

    It may be useful to record the results on polar graph paper to more clearly understand the significance of the results. Blank forms for this purpose are furnished as Figures 5-3 and 5-4. BE1-67 Testing 9170900990 Rev H...
  • Page 63 Figure 5-3. Blank Polar Graph Form Figure 5-4. Blank Polar Graph Form 9170900990 Rev H BE1-67 Testing...
  • Page 64 (through the origin) from 0° to 180° ±5°. This plot defines the trip region as shown in Figure 5-5. The trip region is shown as the lightly shaded area and the tolerance region as the more densely shaded region. BE1-67 Testing 9170900990 Rev H...
  • Page 65 INHIBIT LED is OFF. When shown on a polar plot, the result should be a straight line (through the origin) from -90° to ±90° ±5°. This plot defines the trip region as shown in Figure 5-6. 9170900990 Rev H BE1-67 Testing...
  • Page 66 INHIBIT LED is OFF. When shown on a polar plot, the result should be narrowed down to an included angle ≤ 10° (shown as the shaded region in Figure 5-7). Figure 5-7. Minimum Region of Operation BE1-67 Testing 9170900990 Rev H...
  • Page 67 INHIBIT LED is OFF. When shown on a polar plot, the result should be a straight line (through the origin) from -45° to +135° ±5°. This plot defines the trip region as shown in Figure 5-9. 9170900990 Rev H BE1-67 Testing...
  • Page 68 INHIBIT LED is OFF. When shown on a polar plot, the result should be a straight line (through the origin) from a -60° to +120° ±5°. This plot defines the trip region as shown in Figure 5-10. Figure 5-10. Characteristic Angle = 60 Degrees 5-10 BE1-67 Testing 9170900990 Rev H...

  • Page 69: Timing Curve Verification

    Figure 5-11. Characteristic Angle = 75 Degrees TIMING CURVE VERIFICATION There are many timing characteristics available for BE1-67 relays. Table 5-2 provides two checkpoints for each of the twelve timing characteristic curve types. The characteristic included within the relay is defined in the style number by a two-character code. If this code is B1 to B7, E2, or E4 to E7, only one characteristic can be tested.

  • Page 70: Directional Setting Procedure

    INHIBIT LED should be ON. NOTE Set the CHARACTERISTIC ANGLE by adjusting one end point of the 180° trip region. In Figure 5-12, the test current lags the CHARACTERISTIC ANGLE by 90°. 5-12 BE1-67 Testing 9170900990 Rev H...

  • Page 71: Limited Region Of Operation

    = phase of the applied current relative to the applied voltage Β = desired LIMITED REGION OF OPERATION setting + angle = leading current - angle = lagging current Figure 5-13. Limited Region of Operation Setting 9170900990 Rev H BE1-67 Testing 5-13...

  • Page 72: Verifying Relay Settings

    60° • Limited region of operation: B = 45° The relay that has been selected for this application is a BE1-67, style number B1E-Z2Y-B1N6F. Before applying sensing inputs to the relay, a few adjustments are necessary. Step 1. Since the relay includes the Z2 timing option, the characteristic curve needs to be selected.

  • Page 73: Setting The Direction

    Step 11. Adjust the TIME DIAL for a setting of 11. (This setting is determined from the characteristic curve for timing type B6, Very Inverse, Basler Drawing 99-0928 which is included in Basler publication 9170900990. This setting will give a time delay of 0.6 second at 5 times pickup.
  • Page 74 Figure 5-14. Characteristic Angle = 60 Degrees, Limited Region of Operation = 40 Degrees 5-16 BE1-67 Testing 9170900990 Rev H...

  • Page 75: Appendix A • Characteristic Curves

    APPENDIX A • CHARACTERISTIC CURVES TABLE OF CONTENTS APPENDIX A • CHARACTERISTIC CURVES..................A-1 BE1-67 TIME OVERCURRENT CURVES ....................A-1 Figures Figure A-1. Timing Type B1, Short Inverse (Switch Position 3) ..............A-2 Figure A-2. Timing Type B2, Long Inverse (Switch Position 1)..............A-3 Figure A-3.
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  • Page 77 APPENDIX A • CHARACTERISTIC CURVES BE1-67 TIME OVERCURRENT CURVES BE1-67 time overcurrent curves are illustrated in Figures A-1 through A-12. Table A-1 lists each curve along with the corresponding characteristic curve selector switch position. Table A-1. Characteristic Curves and Switch Positions...
  • Page 78 Figure A-1. Timing Type B1, Short Inverse (Switch Position 3) BE1-67 Characteristic Curves 9170900990 Rev H...
  • Page 79 Figure A-2. Timing Type B2, Long Inverse (Switch Position 1) 9170900990 Rev H BE1-67 Characteristic Curves...
  • Page 80 Figure A-3. Timing Type B3, Definite Time (Switch Position 5) BE1-67 Characteristic Curves 9170900990 Rev H...
  • Page 81 Figure A-4. Timing Type B4, Moderate Inverse (Switch Position 2) 9170900990 Rev H BE1-67 Characteristic Curves...
  • Page 82 Figure A-5. Timing Type B5, Inverse (Switch Position 4) BE1-67 Characteristic Curves 9170900990 Rev H...
  • Page 83 Figure A-6. Timing Type B6, Very Inverse (Switch Position 6) 9170900990 Rev H BE1-67 Characteristic Curves...
  • Page 84 Figure A-7. Timing Type B7, Extremely Inverse (Switch Position 7) BE1-67 Characteristic Curves 9170900990 Rev H...
  • Page 85 Figure A-8. Timing Type E2, BS 142 Long Inverse (Switch Position 8) 9170900990 Rev H BE1-67 Characteristic Curves...
  • Page 86 Figure A-9. Timing Type E4, BS 132 Inverse (Switch Position 9) A-10 BE1-67 Characteristic Curves 9170900990 Rev H...
  • Page 87 Figure A-10. Timing Type E5, BS 142 Inverse (Switch Position A) 9170900990 Rev H BE1-67 Characteristic Curves A-11...
  • Page 88 Figure A-11. Timing Type E6, BS 142 Very Inverse (Switch Position B) A-12 BE1-67 Characteristic Curves 9170900990 Rev H...
  • Page 89 Figure A-12. Timing Type E7, BS 142 Extremely Inverse (Switch Position C, D, E, F) 9170900990 Rev H BE1-67 Characteristic Curves A-13...
  • Page 90 This page intentionally left blank. A-14 BE1-67 Characteristic Curves 9170900990 Rev H...
  • Page 91 ROUTE 143, BOX 269 HIGHLAND, IL 62249 USA http://www.basler.com, info@basler.com PHONE +1 618-654-2341 FAX +1 618-654-2351...

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