Basler BE1-50/51B-229 Instruction Manual
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Basler BE1-50/51B-229 Instruction Manual

Overcurrent relay
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INSTRUCTION MANUAL
FOR
OVERCURRENT RELAY
BE1-50/51B-229
Publication: 9252000892
Revision: A
03/08

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Summary of Contents for Basler BE1-50/51B-229

  • Page 1 INSTRUCTION MANUAL OVERCURRENT RELAY BE1-50/51B-229 Publication: 9252000892 Revision: A 03/08...
  • Page 3 INTRODUCTION This instruction manual provides information about the operation and installation of the BE1-50/51B-229 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 and Date Change • A, 03/08 Updated front panel drawings. • Added publication number and revision level to the footer of each page. • Added GOST-R to Section 1. • —, 06/03 Initial release 9252000892 Rev A BE1-50/51B-229 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 9252000892 Rev A BE1-50/51B-229 Introduction...
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  • Page 9 Figure 1-1. Integrating Reset Characteristic Curve ................... 1-4 Figure 1-2. Instantaneous Characteristic Curves ..................1-5 Figure 1-3. Harmonic Rejection......................... 1-7 Figure 1-4. BE1-50/51B-229 Burden Characteristics ................1-6 Tables Table 1-1. Type SFC Relays Suitable for Direct Replacement ..............1-1 Table 1-2. Time Characteristic Curve Constants with SW3-3 Open (Off)..........1-3 Table 1-3.
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  • Page 11: Table 1-1. Type Sfc Relays Suitable For Direct Replacement

    SFC177∗∗A ∗ Represents any allowed character per GE publication GEK-36807. An existing SFC relay is replaced with a BE1-50/51B-229 relay by performing the following simple steps. 1. Configure your new BE1-50/51-229 relay with the desired settings. 2. Remove the existing SFC relay.

  • Page 12: Current Sensing Input

    APPLICATION The BE1-50/51B-229 has a wide range of pickup settings and front panel selectable time characteristics. This makes the relay compatible with applications involving coordination with fuses, reclosers, cold-load pickup, motor starting, and fixed time requirements. Two switch-selectable reset functions are provided: instantaneous and integrating.

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

    Integrating Reset Reset begins when the current decreases below 95 percent of pickup. Integrating reset simulates the disk reset of electromechanical relays. BE1-50/51B-229 relays provide the integrating reset function even when input current decreases to zero. Integrating reset characteristics are defined by the following equation and shown in Figure 1-1. Equation constants are listed in Tables 1-2 and 1-3.

  • Page 14: Instantaneous Overcurrent (50) Element

    Dropout occurs at 95% of pickup value. Curve Characteristics The instantaneous characteristic curves of the BE1-50/51B-229 are similar to those of standard electromechanical relays. However, the trip time may be slightly longer in applications where the initial current through the relay is less than 0.4 amperes. This may occur in a very lightly loaded circuit or when the relay is pro-viding ground protection and is connected to measure neutral current.

  • Page 15: Burden

    The instantaneous (50) element in the BE1-50/51B-229 relay may be set lower than the instantaneous element in SFC relays and still have the same reach. This is because the BE1-50/51B-229 instantaneous element effectively eliminates the fault current transient overreach components. When calculating BE1- 50/51B-229 instantaneous element settings, calculate the symmetrical value without any adder for transient overreach.

  • Page 16: Frequency Response

    Figure 1-3. BE1-50/51B-229 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. Transient Response <10% overreach with system time constants up to 40 ms. Harmonic Response Figure 1-4 illustrates harmonic rejection and shows that a relay with a 1 ampere pickup setting would pick up at 0.96 amperes when the current contains 40 percent seventh harmonic.

  • Page 17: Target Indicators

    2,828 Vdc Input to Output Circuits: 2,000 Vac or 2828 Vdc 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. 9252000892 Rev A BE1-50/51B-229 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 Weight: 6.1 lb (2.77 kg) Patent Patented in U.S., 1998, Number 5751532 BE1-50/51B-229 General Information 9252000892 Rev A...

  • Page 19: Section 2 • Controls And Indicators

    Figure 2-1. Front Panel Controls and Indicators ..................2-1 Figure 2-2. Circuit Board Controls ......................2-3 Tables Table 2-1. Front Panel Control and Indicator Descriptions ............... 2-2 Table 2-2. Circuit Board Control Descriptions ................... 2-3 9252000892 Rev A BE1-50/51B-229 Controls and Indicators...
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  • Page 21 SECTION 2 • CONTROLS AND INDICATORS INTRODUCTION BE1-50/51B-229 controls and indicators are located on the front panel and on the relay circuit board. FRONT PANEL Front panel controls and indicators are shown in Figure 2-1. The locator letters in Figure 2-1 correspond to the descriptions listed in Table 2-1.
  • Page 22 CIRCUIT BOARD Circuit board controls consist of control switch assembly SW3. The location of SW3 is shown in Figure 2- 2 and SW3 functions are described in Table 2-2. BE1-50/51B-229 Controls and Indicators 9252000892 Rev A...
  • Page 23 SW3-4 selects either instantaneous or integrating reset characteristics. Placing SW3-4 in the on (closed) position selects integrating reset character- istics. Placing SW3-4 in the off (open) position selects instantaneous reset characteristics. 9252000892 Rev A BE1-50/51B-229 Controls and Indicators...
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  • Page 25: Section 3 • Functional Description

    RELAY FUNCTIONS AND OPERATING FEATURES ................3-1 Sensing Input............................3-1 Power Supply ............................. 3-1 Instantaneous Signal.......................... 3-1 Time Signal............................3-1 Microprocessor ........................... 3-1 Power-Off Sensing ..........................3-2 Relay Outputs............................. 3-2 Figures Figure 3-1. BE1-50/51-229 Function Block Diagram................. 3-1 9252000892 Rev A BE1-50/51B-229 Functional Description...
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  • Page 27 SECTION 3 • FUNCTIONAL DESCRIPTION INTRODUCTION This section describes how the BE1-50/51B-229 Overcurrent Relay functions and explains its operating features. Relay function blocks are illustrated in the block diagram of Figure 3-1. Figure 3-1. BE1-50/51-229 Function Block Diagram RELAY FUNCTIONS AND OPERATING FEATURES The following paragraphs describe BE1-50/51B-229 relay functions and operating features.
  • Page 28 The targets will not operate without adequate operating power for the relay. WARNING! Trip circuit voltage is present at the front panel test jacks. When short-circuiting the test jacks, use insulated jumpers to avoid contact with this voltage. BE1-50/51B-229 Functional Description 9252000892 Rev A...

  • Page 29: Section 4 • Installation

    SETTING THE RELAY .......................... 4-2 Application Coordination Example ..................... 4-2 INSTALLING THE RELAY ........................4-3 Figures Figure 4-1. AC Connections ........................4-1 Figure 4-2. DC Connections ........................4-2 Figure 4-3. Coordination Timing Diagram ....................4-3 9252000892 Rev A BE1-50/51B-229 Installation...
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  • Page 31: Section 4 • Installation

    If there is evidence of damage, file a claim with the carrier, and notify your regional sales office or a sales representative at Basler Electric. If the relay will not be installed immediately, place the relay in its original shipping carton and store in a dry, dust-free environment.

  • Page 32: Setting The Relay

    SW3. Application Coordination Example In the following example of a typical application coordination scheme, a BE1-50/51B-229 relay is providing 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 electromechanical relay, the BE1-50/51B-229 relay, with integrating reset characteristic, has the time characteristic curve E (extremely inverse) selected (SW3-3 open or off) and the time dial set at 2.0.

  • Page 33: Installing The Relay

    2. Attach the cover adaptor to the existing SFC relay case with the four screws provided. 3. Insert the BE1-50/51B-229 relay in the case and lock the relay in place with the cradle latches. 4. Install the connection plug from the SFC relay.
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  • Page 35: Section 5 • Testing

    Target Test ............................5-3 Manual Trip Test ..........................5-3 Integrating Reset Test ........................5-4 PERIODIC TESTING ..........................5-4 Figures Figure 5-1. Pickup and Timing Test Setup ....................5-2 Figure 5-2. Target Operational Test Setup....................5-2 9252000892 Rev A BE1-50/51B-229 Testing...
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  • Page 37: Section 5 • Testing

    Output contacts are surge protected. OPERATIONAL TESTING The following procedures verify operation of the BE1-50/51B-229 Overcurrent Protection Relay. The test setups illustrated in Figures 5-1 and 5-2 are intended 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 38 STOP TIMER INPUT Figure 5-1. Pickup and Timing Test Setup TEST SET CURRENT AMPS SOURCE BE1-50/51B START D1148-24 INST TIME 12-09-99 1.0A STOP CURRENT TIMER INPUT LIMITER TARGET CURRENT Figure 5-2. Target Operational Test Setup BE1-50/51B-229 Testing 9252000892 Rev A...

  • Page 39: Instantaneous Pickup Test

    Configure SW3 as follows: SW3-1 off for 60 Hz operation, on for 50 Hz operation, SW3-2 off, SW3-3 on, and SW3-4 on. c. Set the time dial at 4.5 d. Set the curve at S. e. Set the time pickup at 1.0. Set the instantaneous pickup at 01. 9252000892 Rev A BE1-50/51B-229 Testing...

  • Page 40: Integrating Reset Test

    All relays should be tested periodically to identify and correct any problems that are found. Single-phase relays such as the BE1-50/51B-229 are normally used in groups of four (three phases and ground) on the protected circuit. This scheme allows one relay to be withdrawn and tested without losing protection.
  • Page 41 Figure A-12. I2-Inverse, SW3-3 On, Similar to GE IAC 51 ..............A-12 Figure A-13. V2-Very Inverse, SW3-3 On, Similar to GE IAC 53............A-13 Figure A-14. E2-Extremely Inverse, SW3-3 On, Similar to GE IAC 77 ...........A-14 9252000892 Rev A BE1-50/51B-229 Time Characteristic Curves...
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  • Page 43: Appendix A • Time Characteristic Curves

    APPENDIX A • TIME CHARACTERISTIC CURVES INTRODUCTION Figures A-1 through A-14 illustrate the characteristic curves that are programmed into the nonvolatile memory of the BE1-50/51B-229 relay. Figure A-1. S-Short Inverse, SW3-3 Off, Similar to ABB CO-2 9252000892 Rev A BE1-50/51B-229 Time Characteristic Curves...
  • Page 44 Figure A-2. L-Long Inverse, SW3-3 Off, Similar to ABB CO-5 BE1-50/51B-229 Time Characteristic Curves 9252000892 Rev A...
  • Page 45 Figure A-3. D-Definite Time, Similar to ABB CO-6 9252000892 Rev A BE1-50/51B-229 Time Characteristic Curves...
  • Page 46 Figure A-4. M-Moderately Inverse, Similar to ABB CO-7 BE1-50/51B-229 Time Characteristic Curves 9252000892 Rev A...
  • Page 47 Figure A-5. I-Inverse, SW3-3 Off, Similar to ABB CO-8 9252000892 Rev A BE1-50/51B-229 Time Characteristic Curves...
  • Page 48 Figure A-6. V-Very Inverse, SW3-3 Off, Similar to ABB CO-9 BE1-50/51B-229 Time Characteristic Curves 9252000892 Rev A...
  • Page 49 Figure A-7. E-Extremely Inverse, SW3-3 Off, Similar to ABB CO-11 9252000892 Rev A BE1-50/51B-229 Time Characteristic Curves...
  • Page 50 Figure A-8. BS142-B, Very Inverse BE1-50/51B-229 Time Characteristic Curves 9252000892 Rev A...
  • Page 51 Figure A-9. BS142-C, Extremely Inverse 9252000892 Rev A BE1-50/51B-229 Time Characteristic Curves...
  • Page 52 Figure A-10. S2-Short Inverse, SW3-3 On, Similar to GE IAC 55 A-10 BE1-50/51B-229 Time Characteristic Curves 9252000892 Rev A...
  • Page 53 Figure A-11. L2-Long Inverse, SW3-3 On, Similar to GE IAC 66 9252000892 Rev A BE1-50/51B-229 Time Characteristic Curves A-11...
  • Page 54 Figure A-12. I2-Inverse, SW3-3 On, Similar to GE IAC 51 A-12 BE1-50/51B-229 Time Characteristic Curves 9252000892 Rev A...
  • Page 55 Figure A-13. V2-Very Inverse, SW3-3 On, Similar to GE IAC 53 9252000892 Rev A BE1-50/51B-229 Time Characteristic Curves A-13...
  • Page 56 Figure A-14. E2-Extremely Inverse, SW3-3 On, Similar to GE IAC 77 A-14 BE1-50/51B-229 Time Characteristic Curves 9252000892 Rev A...
  • Page 57 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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