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Basler BE1-50/51M-100 Series Instruction Manual

Overcurrent relay
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INSTRUCTION MANUAL
FOR
OVERCURRENT RELAY BE1-50/51M
Publication: 9 2520 00 990
Revision: M 11/2000
Courtesy of NationalSwitchgear.com

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  • Page 1 INSTRUCTION MANUAL OVERCURRENT RELAY BE1-50/51M Publication: 9 2520 00 990 Revision: M 11/2000 Courtesy of NationalSwitchgear.com...
  • Page 2 INTRODUCTION This manual provides information concerning the operation and installation of the BE1-50/51M Overcurrent Relay. To accomplish this, the following is provided. Specifications Functional description Mounting information Setting procedure/example. W A R N I N G ! To avoid personal injury or equipment damage, only qualified personnel should perform the procedures presented in this manual.
  • Page 3 First Printing: April 1992 Printed in USA © 1997, 1998, 1999, 2000 Basler Electric Co., Highland, IL 62249 November 2000 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

    CONTENTS SECTION 1 GENERAL INFORMATION Description ..........1-1 Application .
  • Page 5 CONTENTS - Continued SECTION 6 MAINTENANCE General ..........6-1 In-House Repair .

  • Page 6: Section 1 General Information

    SECTION 1 • GENERAL INFORMATION DESCRIPTION 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 hertz or 60 hertz power systems. Models are available with fifteen popular time characteristics and a wide range of pickup settings.
  • Page 7 Figure 1-1. BE1-50/51M, C1 (Horizontal Mount) Case BE1-50/51M - General Information Courtesy of NationalSwitchgear.com...
  • Page 8 Figure 1-2. BE1-50/51M, C1 (Vertical Mount) Case BE1-50/51M General Information Courtesy of NationalSwitchgear.com...

  • Page 9: 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 hertz, instantaneous element delays, curve sets, and instantaneous or integrating reset characteristics.

  • Page 10: Specifications

    SPECIFICATIONS BE1-50/51M Overcurrent Relays are available with the following features and capabilities. Current Sensing Input (1 Ampere Unit) Continuous current: 2.8 amperes. One second current: 80 amperes. (5 Ampere Unit) Continuous current: 14 amperes. One second current: 400 amperes. TIME PICKUP Range Setting the TIME PICKUP below the minimum pickup (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 11 INST PICKUP Accuracy (1 Ampere Unit) ±2% ±5 milliamperes at or above 0.2 ampere settings. (5 Ampere Unit) ±2% ±25 milliamperes at or above 1.0 ampere settings. Frequency Response A change of ±5 hertz from the nominal 50/60 hertz current causes less than 0.5% change in the current required for pickup.
  • Page 12 Figure 1-3. Device Burden Characteristics BE1-50/51M General Information Courtesy of NationalSwitchgear.com...
  • Page 13 Harmonic Response BE1-50/51M harmonic rejection is illustrated in Figure 1-4. Figure 1-4 shows that a relay set for one ampere pickup would pickup at 0.96 ampere on a current containing 40% seventh harmonic. This corresponds to a ten-to-one rejection ratio. Other conditions may be evaluated in the same manner.
  • Page 14 Figure 1-5. Instantaneous Characteristic Curves INST Characteristics - Continued On 100 series relays, additional delays of 0.1, 0.2, or 0.3 seconds may be added with internal switches SW3-2 and -3. These delays apply to both phase and ground applications. Closing switch SW3-2 provides an additional delay of 0.1 second.
  • Page 15 Time Characteristics - Continued Refer to Tables 1-3 or 1-4 for the time characteristic curve constants. 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 available for use in computer relay setting programs.
  • Page 16 Table 1-4. Time Characteristic Curve Constants ( 200 Series Relays With SW3-3 Closed (ON) Curve Type Figure Constants Similar To Number GE IAC 55 1-16 0.0286 0.0208 1.000 0.9844 0.028 0.0940 GE IAC 66 1-17 2.3955 0.00000 1.000 0.3125 0.028 7.8001 ABB CO-6 0.4797...
  • Page 17 100.0 10.0 Multiple of Pickup This chart vertical axis xRD (Seconds) is applicable for all curves and is derived from multiplying the constant R for the curve selected times D (the TIME DIAL setting). Figure 1-6. Integrating Reset Characteristic Curve Magnetically latched, manually reset targets indicate that current of 0.2 Target Indicators amperes or greater was present in the trip circuit.

  • Page 18: Characteristic Curves

    200 relays. To order full-size drawings of these characteristic curves, contact Customer Service Department of the Power Systems Group, Basler Electric, and request publication number 9 2520 00 999 (Figures 1-7 through 1-20). These publications contain full size characteristic curves on transparent paper (vellum).
  • Page 19 MULTIPLES OF PICK-UP Figure 1-7. Time Characteristic Curve 99-1369, S-Short Inverse (SW3-3 OFF, Similar to ABB CO-2) 1-14 BE1-50/51M - General Information Courtesy of NationalSwitchgear.com...
  • Page 20 MULTIPLES OF PICK-UP Figure 1-8. Time Characteristic Curve, 99-1370, L-Long Inverse (SW3-3 OFF, Similar to ABB CO-5) BE1-50/51M General Information 1-15 Courtesy of NationalSwitchgear.com...
  • Page 21 MULTIPLES OF PICK-UP Figure 1-9. Time Characteristic Curve, 99-1371, D-Definite Time (Similar to ABB CO-6) 1-16 BE1-50/51M - General Information Courtesy of NationalSwitchgear.com...
  • Page 22 MULTIPLES OF PICK-UP Figure 1-10. Time Characteristic Curve, 99-1372, M-Moderately Inverse (Similar to ABB CO-7) BE1-50/51M General Information 1-17 Courtesy of NationalSwitchgear.com...
  • Page 23 MULTIPLES OF PICK-UP Figure 1-11. Time Characteristic Curve, I-Inverse (SW3-3 OFF, Similar to ABB CO-8) 1-18 BE1-50/51M - General Information Courtesy of NationalSwitchgear.com...
  • Page 24 MULTIPLES OF PICK-UP Figure 1-12. Time Characteristic Curve, 99-1374, V-Very Inverse (SW3-3 OFF, Similar to ABB C0-9) BE1-50/51M General Information 1-19 Courtesy of NationalSwitchgear.com...
  • Page 25 MULTIPLES OF PICK-UP Figure 1-13. Time Characteristic Curve, 99-1375, E-Extremely Inverse (SW3-3 OFF, Similar to ABB C0-11) 1-20 BE1-50/51M - General Information Courtesy of NationalSwitchgear.com...
  • Page 26 MULTIPLES OF PICK-UP Figure 1-14. Time Characteristic Curve B, 99-1376, BS142-B (BS142 Very Inverse) BE1-50/51M General Information 1-21 Courtesy of NationalSwitchgear.com...
  • Page 27 MULTIPLES OF PICK-UP Figure 1-15. Time Characteristic Curve, 99-1377, BS142-C (BS142 Extremely Inverse) 1-22 BE1-50/51M - General Information Courtesy of NationalSwitchgear.com...
  • Page 28 Figure 1-16. Time Characteristic Curve, 99-1595, S2-Short Inverse (SW3-3 ON, Similar to GE IAC 55) BE1-50/51M General Information 1-23 Courtesy of NationalSwitchgear.com...
  • Page 29 Figure 1-17. Time Characteristic Curve, 99-1594, L2-Long Inverse (SW3-3 ON, Similar To GE IAC 66) 1-24 BE1-50/51M - General Information Courtesy of NationalSwitchgear.com...
  • Page 30 Figure 1-18. Time Characteristic Curve, 99-1597, I2-Inverse (SW3-3 ON, Similar To GE IAC 51) BE1-50/51M General Information 1-25 Courtesy of NationalSwitchgear.com...
  • Page 31 Figure 1-19. Time Characteristic Curve, 99-1596, V2-Very Inverse (SW3-3 ON, Similar To GE IAC 53) 1-26 BE1-50/51M - General Information Courtesy of NationalSwitchgear.com...
  • Page 32 Figure 1-20. Time Characteristic Curve, 99-1598, E2-Extremely Inverse (SW3-3 ON, Similar To GE IAC 77) BE1-50/51M General Information 1-27 Courtesy of NationalSwitchgear.com...
  • Page 33 SECTION 2 • HUMAN MACHINE INTERFACE (Controls And Indicators) DESCRIPTION Table 2-1 lists and briefly describes the operator controls and indicators of the BE1-50/51M Overcurrent Relay. Reference the call-out letters to Figures 2-1 and 2-2. Table 2-1. BE1-50/51M Controls and Indicators (Refer to Figures 2-1 and 2-2 ) Locator Control or Indicator Function...
  • Page 34 Table 2-1. BE1-50/51M Controls and Indicators - Continued Locator Control or Indicator Function J - Cont. SW3-4 Provides selection of either instantaneous or integrating reset characteristic. SW3-4 closed (ON) provides integrating reset. SW3-4 open (OFF) provides instantaneous reset. Auxiliary Output Jumper Configures the auxiliary output contacts to close with either the Terminations instantaneous (50) trip and/or the timed (51) trip.
  • Page 35 Figure 2-2. Location of Controls and Indicators (100 And 200 Series Relays) BE1-50/51M - Human Machine Interface (Controls And Indicators) Courtesy of NationalSwitchgear.com...

  • Page 36: Section 3 Functional Description

    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 BE1-50/51M Overcurrent Relay at terminals eight and nine.

  • Page 37: Power-Off Sensing

    Power-Off Sensing In 200 series relays, the power-off sensing circuits measure the decaying voltage to determine the length of time that power is removed (zero current). This provides information for the integrating reset function even when power has been entirely removed. Outputs Instantaneous And Timed System circuit breakers controlled by the output contacts can be manually tripped by applying a short across the...

  • Page 38: Section 4 Installation

    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. Proper operation of the relay may be confirmed by performing the operational test procedure in Section 5. In the event the relay is not to be installed immediately, store the relay in its original shipping carton in a moisture and dust free environment.

  • Page 39: Outline Dimensions

    Figure 4-2. Outline Dimensions BE1-50/51M - Installation Courtesy of NationalSwitchgear.com...

  • Page 40: Panel Drilling Diagram, C1 Case

    Figure 4-3. Panel Drilling Diagram, C1 Case BE1-50/51M - Installation Courtesy of NationalSwitchgear.com...

  • Page 41: Connections

    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 the ground terminal is hard-wired to the relay panel with no smaller than 12 AWG copper wire attached to the ground terminal on the rear of the terminal strip.

  • Page 42: Dc Control Connections

    Figure 4-5. DC Control Connections BE1-50/51M - Installation Courtesy of NationalSwitchgear.com...

  • Page 43: Be1-50/51M Overcurrent Relay, Rear View

    Figure 4-6. BE1-50/51M Overcurrent Relay, Rear View BE1-50/51M - Installation Courtesy of NationalSwitchgear.com...

  • Page 44: Section 5 Testing

    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. Proper operation of the relay may be confirmed by performing the operational test procedure in this Section.

  • Page 45: Pickup And Timing Test Setup

    Figure 5-1. Pickup and Timing Test Setup T E S T S E T C U R R E N T A M P S S O U R C E B E 1 - 5 0 / 5 1 M T I M E I N S T S T A R T...

  • Page 46: Test Procedure, Models Be1-50/51M-X04 And -X09

    NOTES 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, Models BE1-50/51M-X04 and -X09 (Five Ampere Sensing Input) Time Pickup Test Perform preliminary setup: Connect test setup as shown in Figure 5-1.
  • Page 47 Step 4. Slowly increase current to terminals 8 and 9. INST contacts should close at an input current of 7.815 to 8.185 amperes. Step 5. Decrease input current until INST output contacts open. Time Dial Test Perform preliminary setup: Connect test setup as shown in Figure 5-1. Insure 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 48 Manual Trip Test Perform preliminary setup: Connect test setup as shown in Figure 5-2. Insure 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: Test Procedure, Models Be1-50/51M-X00 And -X08

    Test Procedure, Models BE1-50/51M-X00 and -X08 (One Ampere Sensing Input) Time Pickup Test Perform preliminary setup: Connect test setup as shown in Figure 5-1. Insure 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 50 Time Dial Test Perform preliminary setup: Connect test setup as shown in Figure 5-1. Insure 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 51: Setting The Relay

    NOTES 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. Step 1. Set target current source to 1.0 ampere, ac. Step 2. Apply 0.15 ampere input current to terminals 8 and 9. Step 3.

  • Page 52: Periodic Test

    Periodic Test Periodic testing should consist of the following procedures. Step 1. Verify that the instantaneous pickup is within ±2% of the value set on the dials. Pickup occurs when the INST output contacts close. Step 2. Verify that the time pickup is within ±2% of the value set on the dials. Pickup occurs when the LED changes from green to red.

  • Page 53: Section 6 Maintenance

    A recommended periodic test is provided in this section. If the relay fails to function properly, contact the Customer Service Department of the Power Systems Group, Basler Electric, for a return authorization number prior to shipping.
  • Page 54 Step 3. Verify that the time to trip for the curve and time dial settings at a multiple of six is the same as the time given on the characteristic curve. Refer to Section 1 for the characteristics curves. Step 4. Verify that the time to trip for the instantaneous element at a pickup multiple of 2 is not greater than the time given on the instantaneous characteristic curve.

  • Page 55: Section 7 Manual Change Information

    SECTION 7 • MANUAL CHANGE INFORMATION SUMMARY AND CROSS REFERENCE GUIDE This section contains information concerning the previous editions of the manual. The substantive changes to date are summarized in Table 7-1. Table 7-1. Changes Revision Summary of Changes ECA/ECO/Date Changed manual title to BE1-50/51M and incorporated engineering 12605/05-12-92 changes accordingly.
  • Page 56 Table 7-1. Changes - Continued Revision Summary of Changes ECA/ECO/Date Added new Figure 4-1 and bumped all following figures. Corrected 14479/09-06-94 old Figure 4-3, new Figure 4-4. Changed all sections to reflect 200 series relay additions and relay 14885/02-01-95 modifications that deleted P2 and P3 jumpers and added switch SW8.

  • Page 57: Section 8 Relay Differences

    SECTION 8 • 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 following locations for controls and indicators.
  • Page 58 Figure 8-1. Location of Controls and Indicators for unit revisions Q and Previous, 100 Series Relays BE1-50/51M - Relay Differences Courtesy of NationalSwitchgear.com...
  • Page 59 BE1-50/51M 100 series relays, unit revisions R and S and 200 series relays, unit revisions H and previous have the following locations for controls and indicators. Table 8-2 lists and briefly describes the operator controls of these relays. Reference the callout letters to Figure 8-2. Table 8-2.
  • Page 60 C R 1 8 / C 3 8 E 1 A E 1 B C R 4 C R 1 C R 2 U 1 5 C 1 4 C 5 2 T P 3 U 1 1 U 1 0 C R 1 7 C 1 2 T P 2...

This manual is also suitable for:

Be1-50/51m-200 seriesBe1-50/51m-108 seriesBe1-50/51m-208 seriesBe1-50/51m-104 seriesBe1-50/51m-204 seriesBe1-50/51m-109 series ... Show all

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