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Basler BE1-51M Instruction Manual

Overcurrent relay
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INSTRUCTION MANUAL
FOR
OVERCURRENT RELAY
BE1-50/51M
Publication: 9252000990
Revision: N
03/08

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Summary of Contents for Basler BE1-51M

  • Page 1 INSTRUCTION MANUAL OVERCURRENT RELAY BE1-50/51M Publication: 9252000990 Revision: N 03/08...
  • Page 3 INTRODUCTION This instruction manual provides information about the operation and installation of the BE1-50/51M Overcurrent Relay. To accomplish this, the following information is provided: • General Information and Specifications • Controls and Indicators • Functional Description • Installation and Maintenance •...
  • Page 4 March 2008 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 this instruction manual (9252000990). Revisions are listed in reverse chronological order. Manual Revision and Date Change • N, 03/08 Updated front panel drawings to show new target reset button. •...
  • Page 6 • D, 05/94 Changed continuous current sensing input rating and clarified TIME PICKUP and INST PICKUP specification ranges, page 1-4. • Changed Figure 1-3 to also show one ampere unit burden data. • Changed time characteristics accuracy statement, page 1-7. •...

  • Page 7: Table Of Contents

    CONTENTS 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 SECTION 6 • RELAY DIFFERENCES...................... 6-1 APPENDIX A •...
  • Page 8 This page intentionally left blank. BE1-50/51M Introduction 9252000990 Rev N...
  • Page 9 SECTION 1 • GENERAL INFORMATION TABLE OF CONTENTS SECTION 1 • GENERAL INFORMATION ....................1-1 INTRODUCTION............................ 1-1 FEATURES ............................1-1 Advantages............................1-1 MODEL NUMBERS ..........................1-3 SPECIFICATIONS ..........................1-4 Current Sensing Input ........................1-4 Time Overcurrent (51) Element......................1-4 Instantaneous Overcurrent (50) Element ................... 1-6 Burden ..............................
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  • Page 11 SECTION 1 • GENERAL INFORMATION INTRODUCTION BE1-50/51M overcurrent relays are microprocessor based, non-directional phase or ground relays that monitor the magnitude of a single-phase ac current to provide accurate instantaneous and time overcurrent protection for 50 or 60 Hz power systems. Models are available with fifteen popular time characteristics and a wide range of pickup settings.

  • Page 12: Figure 1-1. Be1-50/51M, C1 Horizontal Mount Case

    Figure 1-1. BE1-50/51M, C1 Horizontal Mount Case Figure 1-2. BE1-50/51M, C1 Vertical Mount Case BE1-50/51M General Information 9252000990 Rev N...

  • Page 13: Model Numbers

    MODEL NUMBERS Model number variations in the BE1-50/51M overcurrent relays are specified by a three digit extension to the model number. Tables 1-1 and 1-2 provide model number, case style, switch SW3-3 selections, and sensing current input ranges. Internal switches provide for selecting system operating frequencies of 50 or 60 Hz, instantaneous element delays, curve sets, and instantaneous or integrating reset characteristics.

  • Page 14: Specifications

    SPECIFICATIONS BE1-50/51M overcurrent relays have the following features and capabilities. Current Sensing Input 1 Ampere Unit Continuous Current: 2.8 Aac One Second Rating: 80 Aac 5 Ampere Unit Continuous Current: 14 Aac One Second Rating: 400 Aac Time Overcurrent (51) Element Setting the TIME PICKUP control at the minimum pickup setting (0.1 on the 1 ampere unit and 0.5 on the 5 ampere unit), places the relay in the most sensitive state and may be used as a safety setting.

  • Page 15: Table 1-3. Time Characteristic Curve Constants With Sw3-3 Open (Off) (Series 100 Or 200 Relays)

    Time characteristic curve constants are listed in Tables 1-3 and 1-4. Constants have been selected to conform to the characteristics of electromechanical relays over a range of pickup multiples from 1.3 to 40. Values of the constants are provided for use in computer relay setting software. Timing accuracy is ±1 cycle, ±2 percent of time to trip.

  • Page 16: Instantaneous Overcurrent (50) Element

    the instantaneous reset timer to zero when timed dropout occurs. This fast reset characteristic prevents the ratcheting effect that may occur with repeating system faults. Closing SW3-4 selects the integrating reset characteristic. The integrating reset characteristic simulates the disk reset of electromechanical relays.

  • Page 17: Figure 1-4. Instantaneous Characteristic Curves

    Dropout Dropout occurs at 95% of pickup value. Curve Characteristics BE1-50/51M instantaneous characteristic curves are similar to standard electromechanical instantaneous units. However, the time to trip for ground applications is slightly longer than that for phase applications to allow time to power up the relay. Longer trip time for ground applications is beneficial because it helps to avoid nuisance trips.

  • Page 18: Burden

    Burden Burden is non-linear. Figure 1-6 illustrates the device burden. 1 Ampere Unit 120 Ω 0.1 amperes: 5 Ω 1.0 ampere: 5 Ampere Unit 4.8 Ω 0.5 amperes: 0.2 Ω 5.0 amperes: Figure 1-5. Burden Characteristics Frequency Response A change of ±5 Hz from the nominal 50/60 Hz current causes <0.5% change in the current required for pickup.

  • Page 19: Harmonic Response

    Harmonic Response Figure 1-5 shows that a relay set for 1 ampere pickup would pick up at 0.96 amperes with a current containing 40% seventh harmonic. This corresponds to a 10:1 rejection ratio. Other conditions may be evaluated in the same manner. Figure 1-6.

  • Page 20: Environment

    Surge Withstand Capability Qualified to IEEE C37.90.1-1989 Standard Surge Withstand Capability (SWC) Tests for Protective Relays and Relay Systems. Impulse Qualified to IEC 255-5. Radio Frequency Interference (RFI) Field-tested using a 5-watt, hand-held transceiver operating at random frequencies centered around 144 MHz and 440 MHz, with the antenna located 6 inches from the relay in both horizontal and vertical planes.

  • Page 21: Section 2 • Controls And Indicators

    SECTION 2 • CONTROLS AND INDICATORS TABLE OF CONTENTS SECTION 2 • CONTROLS AND INDICATORS ..................2-1 INTRODUCTION............................ 2-1 Figures Figure 2-1. Location of Controls and Indicators ..................2-1 Figure 2-2. Location of SW3 and Auxiliary Output Jumper Terminations ..........2-2 Tables Table 2-1.
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  • Page 23 SECTION 2 • CONTROLS AND INDICATORS INTRODUCTION Figure 2-1 illustrates the front panel controls and indicators of the BE1-50/51M. Figure 2-2 illustrates the location of switch SW3. Both illustrations have lettered call-outs that correspond to the control and indicator descriptions provided in Table 2-1. Figure 2-1.
  • Page 24 Figure 2-2. Location of SW3 and Auxiliary Output Jumper Terminations BE1-50/51M Controls and Indicators 9252000990 Rev N...
  • Page 25 Table 2-1. BE1-50/51M Controls and Indicators (Refer to Figures 2-1 and 2-2) Locator Control or Indicator Function INST MANUAL TRIP When shorted, the test points (jacks) provide a secure means to Test Points manually trip the controlled breaker. Jacks accept a standard 0.08 inch diameter phone tip plug.
  • Page 26 Locator Control or Indicator Function Auxiliary Output Configures the auxiliary output contacts to close with either the Jumper Terminations instantaneous (50) trip and/or the timed (51) trip. Jumper E2 to E1A to close the auxiliary contact with the timed (51) trip.

  • Page 27: Section 3 • Functional Description

    SECTION 3 • FUNCTIONAL DESCRIPTION TABLE OF CONTENTS SECTION 3 • FUNCTIONAL DESCRIPTION ................... 3-1 GENERAL .............................. 3-1 FUNCTIONAL DESCRIPTION ......................3-1 Sensing Input............................3-1 Power Supply ............................. 3-1 Instantaneous Signal.......................... 3-1 Time Signal............................3-1 Microprocessor ........................... 3-1 Power-Off Sensing ..........................3-1 Outputs ...............................
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  • Page 29 SECTION 3 • FUNCTIONAL DESCRIPTION GENERAL BE1-50/51M Overcurrent Relays are microprocessor based non-directional relays that measure ac current to provide secure and reliable instantaneous and time overcurrent protection for power systems. FUNCTIONAL DESCRIPTION Sensing Input Single phase ac current from system current transformers (CT) is brought into the overcurrent relay at terminals 5 and 6.
  • Page 30 Outputs Instantaneous and Timed System circuit breakers controlled by the output contacts can be manually tripped by applying a short across the TIME or INST MANUAL TRIP front panel test points. Current flow in the trip circuit is indicated by the operation of the target. The targets will not operate without adequate operating power for the relay. CAUTION Trip circuit voltage is present at the front panel test points.

  • Page 31: Section 4 • Installation

    SECTION 4 • INSTALLATION TABLE OF CONTENTS SECTION 4 • INSTALLATION ........................4-1 GENERAL .............................. 4-1 MOUNTING............................4-1 CONNECTIONS ............................ 4-3 MAINTENANCE ............................. 4-7 STORAGE.............................. 4-7 Figures Figure 4-1. Rack Mounting Plate, Part Number 9252012001 ..............4-1 Figure 4-2. Outline Dimensions ......................... 4-2 Figure 4-3.
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  • Page 33: Section 4 • Installation

    Visually inspect the relay for damage that may have occurred during shipment. If there is evidence of damage, immediately file a claim with the carrier and notify the Regional Sales Office, or contact the Sales Representative at Basler Electric, Highland, Illinois.
  • Page 34 Overcurrent Relay INST MANUAL TRIP MANUAL TRIP ACTIVE/PICKUP Trip Volt. Present Trip Volt. Present RESET PICKU 4.000 TIME DIAL (0.5 MIN. SET) PICKUP TIME INST UNITS TENTHS CURVE UNITS TENTHS TENS UNITS BE1-50/51B-XXX 6.875 .312 6.250 .315 5.625 DEFINITE TIME EXTREMELY INVERSE OVERCURRENT CURVE DEFINITIONS...

  • Page 35: Connections

    Figure 4-3. Panel Drilling Diagram, C1 Case CONNECTIONS Incorrect wiring may result in damage to the relay. Be sure to check model and part number before connecting and energizing a particular relay. NOTE Be sure that the relay is hard-wired to earth ground with no smaller than 12 AWG copper wire attached to the ground terminal on the rear of the unit case.
  • Page 36 Connections should be made with minimum wire size of 14 AWG except as noted for the ground wire. Typical ac input and dc control connections are shown in Figures 4-4 and 4-5. The auxiliary output jumper configuration schematic diagram is also shown in Figure 4-5. Relay internal connections are shown on the back of the relay.
  • Page 37 Figure 4-5. DC Control Connections 9252000990 Rev N BE1-50/51M Installation...
  • Page 38 Figure 4-6. BE1-50/51M Terminal Connections, Rear View BE1-50/51M Installation 9252000990 Rev N...

  • Page 39: Maintenance

    BE1-50/51M overcurrent relays require no preventive maintenance. However, periodic checks should be performed according to scheduled practices. A recommended periodic test is provided in Section 5. If the relay fails to function properly, contact the Technical Sales Support Department of Basler Electric. STORAGE This protective relay contains long-life, aluminum, electrolytic capacitors.
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  • Page 41: Section 5 • Testing

    SECTION 5 • TESTING TABLE OF CONTENTS SECTION 5 • TESTING ..........................5-1 GENERAL .............................. 5-1 DIELECTRIC TEST ..........................5-1 OPERATIONAL TEST PROCEDURE ....................5-1 Test Equipment Required........................5-1 Test Procedure for Five Ampere Units....................5-3 Test Procedure for One Ampere Units....................5-5 SETTING THE RELAY ..........................
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  • Page 43: Section 5 • Testing

    SECTION 5 • TESTING GENERAL Dielectric testing, operational testing, and periodic testing are described in the following paragraphs. DIELECTRIC TEST In accordance with IEC 255-5 and IEEE C37.90-1989, one-minute dielectric (high potential) tests may be performed as follows: All circuits to ground: 2,828 Vdc.
  • Page 44 Figure 5-1. Pickup and Timing Test Setup TEST SET CURRENT AMPS SOURCE BE1-50/51M TIME INST START 1.0A STOP CURRENT TIMER INPUT LIMITER D2750-21 TARGET CURRENT Figure 5-2. Target Operational Test Setup BE1-50/51M Testing 9252000990 Rev N...

  • Page 45: Test Procedure For Five Ampere Units

    NOTE When testing TIME overcurrent functions, INST PICKUP settings of 00 will affect the calibration of the TIME functions. TIME PICKUP settings of 00 also affect INST functions. Test Procedure for Five Ampere Units TIME Pickup Test Perform preliminary setup: •...
  • Page 46 • Set INST PICKUP to 90. Step 1. Prepare to apply 1.5 amperes input current to terminals 8 and 9 and record the elapsed time from when current is applied until TIME output contacts close. Step 2. Apply the current (step from 0 to 1.5 amperes) and record the elapsed time. Elapsed time should be 1.754 to 2.084 seconds.

  • Page 47: Test Procedure For One Ampere Units

    • Set CURVE to I. • Set TIME PICKUP to 1.0. • Set INST PICKUP to 90. Step 1. Set target current source to 1.0 ampere, ac. Step 2. Read all of Step 3 before beginning Step 3. Step 3. Apply 4.0 amperes input current to terminals 8 and 9. After the unit trips, remove the input current for 20 ±0.25 seconds, then reapply the 4.0 amperes input current.
  • Page 48 • Ensure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no instantaneous delay), SW3-3 to OFF (no instantaneous delay (100 series relays) or ABB type curves selected (200 series relays)), and SW3-4 to OFF (selects instantaneous reset). •...

  • Page 49: Setting The Relay

    Integrating Reset Test (Applicable Only to 200 Series Relays) Perform preliminary setup: • Connect test setup as shown in Figure 5-1. • Ensure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no instantaneous delay), SW3-3 to OFF (no instantaneous delay (100 series relays) or ABB type curves selected (200 series relays)), and SW3-4 to ON (selects integrating reset).
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  • Page 51: Section 6 • Relay Differences

    SECTION 6 • RELAY DIFFERENCES TABLE OF CONTENTS SECTION 6 • RELAY DIFFERENCES...................... 6-1 GENERAL .............................. 6-1 DIFFERENCES............................6-1 Figures Figure 6-1. Location of Controls and Indicators for unit revision Q and Previous, 100 Series Relays ..6-2 Figure 6-2. Location of Controls and Indicators for Unit Revisions R and S, 100 Series Relays and Unit Revisions H and Previous, 200 Series Relays ..................
  • Page 52 This page intentionally left blank. BE1-50/51M Relay Differences 9252000990 Rev N...
  • Page 53 SECTION 6 • RELAY DIFFERENCES GENERAL This section provides the information necessary to support BE1-50/51M 100 series relays, revision S and previous. In all unit revisions S and previous SW3 is the same as SW8. DIFFERENCES BE1-50/51M 100 series relay boards revision Q and previous have the locations for controls and indicators shown in Figure 6-1.
  • Page 54 Figure 6-1. Location of Controls and Indicators for unit revision Q and Previous, 100 Series Relays BE1-50/51M Relay Differences 9252000990 Rev N...
  • Page 55 CR18/C38 CR17 W4 W5 CR11 CR12 D1181-08 Figure 6-2. Location of Controls and Indicators for Unit Revisions R and S, 100 Series Relays and Unit Revisions H and Previous, 200 Series Relays 9252000990 Rev N BE1-50/51M Relay Differences...
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  • Page 57 APPENDIX A • TIME CHARACTERISTIC CURVES TABLE OF CONTENTS APPENDIX A • TIME CHARACTERISTIC CURVES................A-1 TIME CHARACTERISTIC CURVES......................A-1 Figures Figure A-1. Time Characteristic Curve, S-Short Inverse (SW3-3 OFF, Similar to ABB CO-2) ....A-1 Figure A-2. Time Characteristic Curve, L-Long Inverse (SW3-3 OFF, Similar to ABB CO-5) ....A-2 Figure A-3.
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  • Page 59: Appendix A • Time Characteristic Curves

    APPENDIX A • TIME CHARACTERISTIC CURVES TIME CHARACTERISTIC CURVES Figures A-1 through A-9 illustrate the time characteristic curves that are programmed into the nonvolatile memory of series 100 relays. Figures A-1 through A-14 illustrate the characteristic curves that are programmed into the nonvolatile memory of series 200 relays. Figure A-1.
  • Page 60 Figure A-2. Time Characteristic Curve, L-Long Inverse (SW3-3 OFF, Similar to ABB CO-5) BE1-50/51M Time Characteristic Curves 9252000990 Rev N...
  • Page 61 Figure A-3. Time Characteristic Curve, D-Definite Time (Similar to ABB CO-6) 9252000990 Rev N BE1-50/51M Time Characteristic Curves...
  • Page 62 Figure A-4. Time Characteristic Curve, M-Moderately Inverse (Similar to ABB CO-7) BE1-50/51M Time Characteristic Curves 9252000990 Rev N...
  • Page 63 Figure A-5. Time Characteristic Curve, I-Inverse (SW3-3 OFF, Similar to ABB CO-8) 9252000990 Rev N BE1-50/51M Time Characteristic Curves...
  • Page 64 Figure A-6. Time Characteristic Curve, V-Very Inverse (SW3-3 OFF, Similar to ABB CO-9) BE1-50/51M Time Characteristic Curves 9252000990 Rev N...
  • Page 65 Figure A-7. Time Characteristic Curve, E-Extremely Inverse (SW3-3 OFF, Similar to ABB CO-11) 9252000990 Rev N BE1-50/51M Time Characteristic Curves...
  • Page 66 Figure A-8. Time Characteristic Curve, BS142-B (BS142 Very Inverse) BE1-50/51M Time Characteristic Curves 9252000990 Rev N...
  • Page 67 Figure A-9. Time Characteristic Curve, BS142-C (BS142 Extremely Inverse) 9252000990 Rev N BE1-50/51M Time Characteristic Curves...
  • Page 68 Figure A-10. Time Characteristic Curve, S2-Short Inverse (SW3-3 ON, Similar to GE IAC 55) A-10 BE1-50/51M Time Characteristic Curves 9252000990 Rev N...
  • Page 69 Figure A-11. Time Characteristic Curve, L2-Long Inverse (SW3-3 ON, Similar to GE IAC 66) 9252000990 Rev N BE1-50/51M Time Characteristic Curves A-11...
  • Page 70 Figure A-12. Time Characteristic Curve, I2-Inverse (SW3-3 ON, Similar to GE IAC 51) A-12 BE1-50/51M Time Characteristic Curves 9252000990 Rev N...
  • Page 71 Figure A-13. Time Characteristic Curve, V2-Very Inverse (SW3-3 ON, Similar to GE IAC 53) 9252000990 Rev N BE1-50/51M Time Characteristic Curves A-13...
  • Page 72 Figure A-14. Time Characteristic Curve, E2-Extremely Inverse (SW3-3 ON, Similar to GE IAC 77) A-14 BE1-50/51M Time Characteristic Curves 9252000990 Rev N...
  • Page 73 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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