Basler BE1-50/51B-232 Instruction Manual
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Basler BE1-50/51B-232 Instruction Manual

Overcurrent relay
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INSTRUCTION MANUAL
FOR
OVERCURRENT RELAY
BE1-50/51B-232
Publication: 9252000896
Revision: A
03/08

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Summary of Contents for Basler BE1-50/51B-232

  • Page 1 INSTRUCTION MANUAL OVERCURRENT RELAY BE1-50/51B-232 Publication: 9252000896 Revision: A 03/08...
  • Page 3 INTRODUCTION This instruction manual provides information about the operation and installation of the BE1-50/51B-232 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 The following information provides a historical summary of the changes made to this instruction manual (9252000896). Revisions are listed in reverse chronological order. Manual Revision and Date Change • A, 03/08 Updated front panel drawings to show new target reset button. • ―, 01/07 Initial release. 9252000896 Rev A BE1-50/51B-232 Introduction...
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  • Page 7: Table Of 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 APPENDIX A • TIME CHARACTERISTIC CURVES................A-1 9252000896 Rev A BE1-50/51B-232 Introduction...
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  • Page 9 Table 1-1. GE IAC Relays Suitable for Direct Replacement ..............1-1 Table 1-2. Time Characteristic Curve Constants with SW3-3 Open (Off)..........1-3 Table 1-3. Time Characteristic Curve Constants with SW3-3 Closed (On) ..........1-3 9252000896 Rev A BE1-50/51B-232 General Information...
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  • Page 11: Table 1-1. Ge Iac Relays Suitable For Direct Replacement

    INTRODUCTION BE1-50/51B-232 protective relays are direct replacements for General Electric, IAC relays. BE1-50/51B- 232 protective relays are enclosed in an S1 case. The BE1-50/51B-232 has a 5 ampere current sensing input. Compatible IAC model numbers are listed in Table 1-1.

  • Page 12: Current Sensing Input

    • Self powered from the sensed current • Continuous automatic calibration BE1-50/51B-232 overcurrent relays may be tested without removing the relay from the case. Shorting contacts are provided for all current inputs when the connection plugs or relay chassis is removed from the relay case.

  • Page 13: Table 1-2. Time Characteristic Curve Constants With Sw3-3 Open (Off)

    § Fixed time delay, adjustable from 0.1 to 9.9 seconds. Integrating Reset Reset begins when the current drops below 95% of pickup. Integrating reset simulates the disk reset of electromechanical relays. BE1-50/51B-232 relays provide the integrating reset function even when input current falls to zero. 9252000896 Rev A...

  • Page 14: Instantaneous Overcurrent (50) Element

    An additional fixed delay of 0.1, 0.2, or 0.3 second may be added with internal switches SW3-1 and SW3-2. This delay applies to both phase and ground applications. Closing switch SW3-1 provides an additional delay of 0.2 second. Closing switch SW3-2 provides an additional delay of 0.1 second. Closing BE1-50/51B-232 General Information 9252000896 Rev A...

  • Page 15: Burden

    The instantaneous element in BE1-50/51B-232 relays may be set lower than the instantaneous element in ABB relays and still have the same reach. This is because the BE1-50/51B-232 instantaneous element effectively eliminates the fault current transient overreach components. When calculating BE1-50/51B- 232 relay instantaneous element settings, calculate the symmetrical value without any adder for transient overreach.

  • Page 16: Frequency Response

    Figure 1-4 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. BE1-50/51B-232 General Information 9252000896 Rev A...

  • Page 17: Target Indicators

    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. 9252000896 Rev A BE1-50/51B-232 General Information...

  • Page 18: Environment

    GOST-R certified No. POCC US.ME05.B03391; complies with the relevant standards of Gosstandart of Russia. Issued by accredited certification body POCC RU.0001.11ME05. Physical Case Size: S1 (Refer to Section 4, Installation for case dimensions.) Weight: 6.1 lb (2.77 kg) BE1-50/51B-232 General Information 9252000896 Rev A...

  • Page 19: Section 2 • Controls And Indicators

    SECTION 2 • CONTROLS AND INDICATORS ..................2-1 INTRODUCTION............................ 2-1 Figures Figure 2-1. Front Panel Controls and Indicators ..................2-1 Figure 2-2. Location of SW3........................2-2 Tables Table 2-1. BE1-50/51B-231 Controls and Indicators (Refer to Figures 2-1 and 2-2)........ 2-3 9252000896 Rev A BE1-50/51B-232 Controls and Indicators...
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  • Page 21 SECTION 2 • CONTROLS AND INDICATORS INTRODUCTION Figure 2-1 illustrates the front panel controls and indicators of the BE1-50/51B-232. 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.
  • Page 22 Figure 2-2. Location of SW3 BE1-50/51B-232 Controls and Indicators 9252000896 Rev A...
  • Page 23 Table 2-1. BE1-50/51B-232 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.
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  • Page 25: Section 3 • Functional Description

    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 ............................... 3-2 Figures Figure 3-1. Functional Block Diagram ....................... 3-2 9252000896 Rev A BE1-50/51B-232 Functional Description...
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  • Page 27 SECTION 3 • FUNCTIONAL DESCRIPTION GENERAL BE1-50/51B-232 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 28 The targets will not operate without adequate operating power for the relay. CAUTION Trip circuit voltage is present at the front panel test points. When shorting the test points, use insulated jumpers to avoid contact with these voltages. Figure 3-1. Functional Block Diagram BE1-50/51B-232 Functional Description 9252000896 Rev A...

  • Page 29: Section 4 • Installation

    Figure 4-4. Panel Drilling Diagram for S1 Case, Side View, Projection Mounting ........4-4 Figure 4-5. Coordination Timing Diagram ....................4-5 Figure 4-6. AC Input Connections ......................4-6 Figure 4-7. DC Control Connections ......................4-7 9252000896 Rev A BE1-50/51B-232 Installation...
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  • Page 31: 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 32 Figure 4-2. Panel Drilling Diagram for S1 Case, Semi-Flush Mounting BE1-50/51B-232 Installation 9252000896 Rev A...
  • Page 33 Figure 4-3. Panel Drilling Diagram for S1 Case, Projection Mounting 9252000896 Rev A BE1-50/51B-232 Installation...

  • Page 34: Factory Settings

    • SW3-4 — ON (Integrating reset characteristics). APPLICATION COORDINATION In a typical application coordination scheme, a BE1-50/51B-232 is being used to provide primary protection for a radial distribution feeder. An electromechanical overcurrent relay with extremely inverse timing provides protection for the transformer and bus. To improve coordination with the...
  • Page 35 In Figure 4-1, = 0.209 seconds (relay was at reset). = value < T because rewind has not gone to zero. = value < T because rewind has not gone to zero. Figure 4-5. Coordination Timing Diagram 9252000896 Rev A BE1-50/51B-232 Installation...

  • Page 36: Connections

    Typical ac input and dc control connections are shown in Figures 4-6 and 4-7. Refer to the block diagram in Section 3 for relay internal connections. Figure 4-6. AC Input Connections BE1-50/51B-232 Installation 9252000896 Rev A...

  • Page 37: Maintenance

    BE1-50/51B-232 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 39: Section 5 • Testing

    Test Procedure ........................... 5-3 SETTING THE RELAY .......................... 5-5 PERIODIC TESTS ..........................5-5 General............................... 5-5 Periodic Test............................5-5 Figures Figure 5-1. Pickup and Timing Test Setup ....................5-2 Figure 5-2. Target Operational Test Setup....................5-2 9252000896 Rev A BE1-50/51B-232 Testing...
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  • Page 41: Section 5 • Testing

    Output contacts are surge protected. OPERATIONAL TEST PROCEDURE The following procedures verify operation of relays BE1-50/51B-232. The test setup of Figures 5-1 and 5-2 are intended primarily as an illustration of the principles involved. Other test setups known to be capable of testing with the stated and implied tolerances (including equipment specifically designed for testing relays) may be used.
  • Page 42 Figure 5-1. Pickup and Timing Test Setup Figure 5-2. Target Operational Test Setup BE1-50/51B-232 Testing 9252000896 Rev A...

  • Page 43: Test Procedure

    INST functions. Test Procedure The following tests are performed to verify functionality of the BE1-50/51B-232 overcurrent relay. The TIME and INST output contact terminals are strapped together. Therefore it is necessary to disconnect specific wires during the TIME and INST pickup tests. This verifies the proper functionality of the TIME and INST elements.
  • Page 44 Insure that SW3 switches are set: SW3-1 to OFF, SW3-2 to OFF, SW3-3 to ON, and SW3-4 ON. • Set TIME DIAL to 4.5. • Set CURVE to S • Set TIME PICKUP to 1.0. • Set INST PICKUP to 01. BE1-50/51B-232 Testing 9252000896 Rev A...

  • Page 45: Setting The Relay

    All relays should be tested periodically to identify and correct any problems that are found. Single phase relays such as the BE1-50/51B-232 are normally used in groups of four (three phase and ground) on the protected circuit. This relay scheme allows each unit to be withdrawn one at a time for testing purposes without losing protection.
  • Page 46 Step 5. Verify that the targets operate with one ac ampere of trip current in the trip circuits and that they can be reset using the RESET BUTTON. BE1-50/51B-232 Testing 9252000896 Rev A...
  • Page 47 Figure A-12. Time Characteristic Curve, I2-Inverse (SW3-3 ON, Similar to GE IAC 51)......A-12 Figure A-13. Time Characteristic Curve, V2-Very Inverse (SW3-3 ON, Similar to GE IAC 53)....A-13 Figure A-14. Time Characteristic Curve, E2-Extremely Inverse (SW3-3 ON, Similar to GE IAC 77) ..A-14 9252000896 Rev A BE1-50/51B-232 Time Characteristic Curves...
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  • Page 49: Appendix A • Time Characteristic Curves

    TIME CHARACTERISTIC CURVES Figures A-1 through A-14 illustrate the time characteristic curves that are programmed into the nonvolatile memory of this relay. Figure A-1. Time Characteristic Curve, S-Short Inverse (SW3-3 OFF, Similar to ABB CO-2) 9252000896 Rev A BE1-50/51B-232 Time Characteristic Curves...
  • Page 50 Figure A-2. Time Characteristic Curve, L-Long Inverse (SW3-3 OFF, Similar to ABB CO-5) BE1-50/51B-232 Time Characteristic Curves 9252000896 Rev A...
  • Page 51 Figure A-3. Time Characteristic Curve, D-Definite Time (Similar to ABB CO-6) 9252000896 Rev A BE1-50/51B-232 Time Characteristic Curves...
  • Page 52 Figure A-4. Time Characteristic Curve, M-Moderately Inverse (Similar to ABB CO-7) BE1-50/51B-232 Time Characteristic Curves 9252000896 Rev A...
  • Page 53 Figure A-5. Time Characteristic Curve, I-Inverse (SW3-3 OFF, Similar to ABB CO-8) 9252000896 Rev A BE1-50/51B-232 Time Characteristic Curves...
  • Page 54 Figure A-6. Time Characteristic Curve, V-Very Inverse (SW3-3 OFF, Similar to ABB CO-9) BE1-50/51B-232 Time Characteristic Curves 9252000896 Rev A...
  • Page 55 Figure A-7. Time Characteristic Curve, E-Extremely Inverse (SW3-3 OFF, Similar to ABB CO-11) 9252000896 Rev A BE1-50/51B-232 Time Characteristic Curves...
  • Page 56 Figure A-8. Time Characteristic Curve, BS142-B (BS142 Very Inverse) BE1-50/51B-232 Time Characteristic Curves 9252000896 Rev A...
  • Page 57 Figure A-9. Time Characteristic Curve, BS142-C (BS142 Extremely Inverse) 9252000896 Rev A BE1-50/51B-232 Time Characteristic Curves...
  • Page 58 Figure A-10. Time Characteristic Curve, S2-Short Inverse (SW3-3 ON, Similar to GE IAC 55) A-10 BE1-50/51B-232 Time Characteristic Curves 9252000896 Rev A...
  • Page 59 Figure A-11. Time Characteristic Curve, L2-Long Inverse (SW3-3 ON, Similar to GE IAC 66) 9252000896 Rev A BE1-50/51B-232 Time Characteristic Curves A-11...
  • Page 60 Figure A-12. Time Characteristic Curve, I2-Inverse (SW3-3 ON, Similar to GE IAC 51) A-12 BE1-50/51B-232 Time Characteristic Curves 9252000896 Rev A...
  • Page 61 Figure A-13. Time Characteristic Curve, V2-Very Inverse (SW3-3 ON, Similar to GE IAC 53) 9252000896 Rev A BE1-50/51B-232 Time Characteristic Curves A-13...
  • Page 62 Figure A-14. Time Characteristic Curve, E2-Extremely Inverse (SW3-3 ON, Similar to GE IAC 77) A-14 BE1-50/51B-232 Time Characteristic Curves 9252000896 Rev A...
  • Page 63 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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