Basler BE1-50/51B-217 Instruction Manual
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Basler BE1-50/51B-217 Instruction Manual

Overcurrent relay
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INSTRUCTION MANUAL
OVERCURRENT RELAY BE1-50/51B-217
MANUAL TRIP
TIME DIAL
0
+
UNITS
TENTHS
D2718-16.vsd
12-14-99
FOR
Basler Electric
Highland, Illinois
R
SOLID STATE PROTECTIVE RELAY
TIME
PICKUP
PICKUP
(0.5 MIN. SET)
0
S
0
0
+
CURVE
UNITS
TENTHS
BE1-50/51B-217
OVERCURRENT RELAY
INST
MANUAL TRIP
PICKUP
RESET
0
0
TIME
INST
+
TENS
UNITS
Publication: 9 2520 00 980
Revision: A
12/99

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Summary of Contents for Basler BE1-50/51B-217

  • Page 1 INSTRUCTION MANUAL OVERCURRENT RELAY BE1-50/51B-217 Basler Electric Highland, Illinois SOLID STATE PROTECTIVE RELAY INST TIME MANUAL TRIP PICKUP MANUAL TRIP PICKUP TIME DIAL (0.5 MIN. SET) PICKUP RESET TIME INST UNITS TENTHS CURVE UNITS TENTHS TENS UNITS BE1-50/51B-217 OVERCURRENT RELAY D2718-16.vsd...
  • Page 2 INTRODUCTION This manual provides information concerning the operation and installation of the BE1-50/51B-217 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 1996 Printed in USA © 1995, 1999, Basler Electric Co., Highland, IL 62249 December 1999 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

    50 hertz or 60 hertz power systems. BE1-50/51B-217 Overcurrent Relay is a special, modified relay with software for a Load Demand Characteristic Curve in place of the short inverse standard curve.
  • Page 7 BE1-50/51B-217 General Information Basler Electric Highland, Illinois T I M E I N S T ST TRIP P I C K U P T E S T T R ME DIAL P I C K U P P I C K U P...

  • Page 8: Load Demand Curve

    Select preferred time pickup level INST PICKUP Select preferred instantaneous pickup level SPECIFICATIONS BE1-50/51B-217 Overcurrent Relay has the following features and capabilities. Current Sensing Input Continuous current: 14 amperes. One second current: 400 amperes. TIME PICKUP Range 0.5 to 15.9 amperes in 0.1 ampere steps. Setting the TIME PICKUP to the minimum pickup (0.5 ampere), places the relay in the most sensitive...
  • Page 9 BE1-50/51B-217 General Information 1 0 0 0 0 1 0 0 0 1 0 0 Time Tap = 1amp. Curve S Time Dial 4.0 Instantaneous Tap = 5 amps. 0.01 M U L T I P L E O F P I C K U P...
  • Page 10 BE1-50/51B-217 General Information INST PICKUP Accuracy ±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. INST Transient Response...
  • Page 11 BE1-50/51B-217 General Information Harmonic Response BE1-50/51B 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 12 Closing SW8-4 selects the integrating reset characteristic. The integrating reset characteristic simulates the disk reset of electromechanical relays. BE1-50/51B-217 relays provide the integrating reset function even when input current falls to zero. Integrating reset characteristics are shown in Figure 1-6.
  • Page 13 BE1-50/51B-217 General Information Output contacts are surge protected and rated as follows: 50/51 Output Resistive: 120/240 Vac Make and carry 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3 amperes continuously, and break 5 amperes. 125/250 Vdc Make and carry 30 amperes for 0.2 seconds, carry 7 amperes for 2...

  • Page 14: Characteristic Curves

    To order full-size drawings of these characteristic curves, contact the Customer Service Department of the Power Systems Group, Basler Electric, and request the 99-(4 digit) number associated with each graph. These graphs are full size characteristic curves on transparent paper (vellum).
  • Page 15 BE1-50/51B-217 General Information MULTIPLES OF PICK-UP Figure 1-7. Time Characteristic Curve 99-1610, Load Demand Curve 1-10...
  • Page 16 BE1-50/51B-217 General Information MULTIPLES OF PICK-UP Figure 1-8. Time Characteristic Curve, 99-1370, L-Long Inverse 1-11...
  • Page 17 BE1-50/51B-217 General Information MULTIPLES OF PICK-UP Figure 1-9. Time Characteristic Curve, 99-1371, D-Definite Time 1-12...
  • Page 18 BE1-50/51B-217 General Information MULTIPLES OF PICK-UP Figure 1-10. Time Characteristic Curve, 99-1372, M-Moderately Inverse 1-13...
  • Page 19 BE1-50/51B-217 General Information MULTIPLES OF PICK-UP Figure 1-11. Time Characteristic Curve, I-Inverse 1-14...
  • Page 20 BE1-50/51B-217 General Information MULTIPLES OF PICK-UP Figure 1-12. Time Characteristic Curve, 99-1374, V-Very Inverse 1-15...
  • Page 21 BE1-50/51B-217 General Information MULTIPLES OF PICK-UP Figure 1-13. Time Characteristic Curve, 99-1375, E-Extremely Inverse 1-16...
  • Page 22 BE1-50/51B-217 General Information MULTIPLES OF PICK-UP Figure 1-14. Time Characteristic Curve B, 99-1376, BS142-B 1-17...
  • Page 23 BE1-50/51B-217 General Information MULTIPLES OF PICK-UP Figure 1-15. Time Characteristic Curve, 99-1377, BS142-C 1-18...

  • Page 24: Section 2 Controls And Indicators

    SECTION 2 CONTROLS AND INDICATORS GENERAL Table 2-1 lists and briefly describes the BE1-50/51B-217 controls and indicators. Reference the callouts to Figures 2-1 and 2-2. Table 2-1. BE1-50/51B Controls and Indicators (Refer to Figures 2-1, 2-2, and 2-3) Locator Control or Indicator...
  • Page 25 BE1-50/51B-217 Controls and Indicators SW8-3 SW8-3 closed (ON) provides an additional instantaneous delay of 0.2 seconds. Closing both switches SW8-2 and -3 provides an additional instantaneous delay of 0.3 seconds. Table 2-1. BE1-50/51B Controls and Indicators - Continued Locator Control or Indicator...
  • Page 26 BE1-50/51B-217 Controls and Indicators Figure 2-2. Location of Controls and Indicators...

  • Page 27: Section 3 Functional Description

    SECTION 3 FUNCTIONAL DESCRIPTION GENERAL BE1-50/51B-217 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 BE1-50/51B Overcurrent Relay at terminals eight and nine.

  • Page 28: Power-Off Sensing

    BE1-50/51B-217 Functional Description The microprocessor performs the program operations based on the inputs and the internal software program. When the sensed current exceeds the TIME PICKUP setting, the TIME PICKUP LED is turned ON. TIME contacts (51 and 51 AUX) are closed in accordance with the time characteristic curve. If the sensed current exceeds the INST PICKUP setting, the INST contacts (50) are closed.
  • Page 29 BE1-50/51B-217 Functional Description Figure 3-1. Functional Block Diagram...

  • Page 30: 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 31: Panel Drilling Diagram, S1 Case, (Semi-Flush Mount)

    BE1-50/51B-217 Installation Figure 4-1. Panel Drilling Diagram S1 Case, (Semi-Flush Mount)

  • Page 32: Outline Dimensions For S1 Case (Semi-Flush Mount)

    BE1-50/51B-217 Installation D2750-24.vsd 12-17-99 NUMBERS IN PARENTHESES INDICATE METRIC DIMENSIONS (MILLIMETERS). ALL OTHER DIMENSIONS ARE IN INCHES. Figure 4-2. Outline Dimensions For S1 Case, (Semi-Flush Mount)

  • Page 33: Panel Drilling Diagram, S1 Case, (Projection Mount)

    BE1-50/51B-217 Installation Figure 4-3. Panel Drilling Diagram S1 Case, (Projection Mount)
  • Page 34 BE1-50/51B-217 Installation 2.40 (62.48) 1.95 6.19 (157.2) (49.53) M O U N T I N G P A N E L 5/16-18 STUD 2 PLACES 4.03 (102.4) (6.4) P A N E L C A S E DETAIL A-A S H O W I N G T H E A D D I T I O N O F W A S H E R S O V E R T H E B O S S T O T I G H T E N T H E RELAY AGAINST THE PANEL.

  • Page 35: Outline Dimensions, Be1-50/51B, S1 Case (Projection Mount)

    BE1-50/51B-217 Installation Figure 4-4. Outline Dimensions BE1-50/51B, S1 Case (Projection Mount)

  • Page 36: Connections

    BE1-50/51B-217 Installation %100'%6+105 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 terminal strip.
  • Page 37 BE1-50/51B-217 Installation...
  • Page 38 BE1-50/51B-217 Installation Figure 4-6. DC Control Connections And Jumper Configuration Terminals...
  • Page 39 BE1-50/51B-217 Installation O V E R C U R R E N T G N D A U X D 1 1 4 6 - 1 6 04-23-96 4-10...
  • Page 40 BE1-50/51B-217 Installation Figure 4-7. BE1-50/51B-217 Overcurrent Relay, Rear View 4-11...

  • Page 41: Section 5 Testing

    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 42: Pickup And Timing Test Setup

    BE1-50/51B-217 Testing 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 BE1-50/51B T I M E I N S T S T A R T 1.0Aac...

  • Page 43: Test Procedure

    BE1-50/51B-217 Testing 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 Time Pickup Test Perform preliminary setup: Connect test setup as shown in Figure 5-1.
  • Page 44 BE1-50/51B-217 Testing 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.
  • Page 45 BE1-50/51B-217 Testing Manual Trip Test Perform preliminary setup: Connect test setup as shown in Figure 5-2. Insure that SW8 switches are set correctly: SW8-1 for operating frequency, SW8-2 to OFF (no instantaneous delay), SW8-3 to OFF (no instantaneous delay), and SW8-4 to OFF (selects instantaneous reset).

  • Page 46: 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-217 are normally used in groups of four (three phase and ground) on the protected circuit. Only three are required at any one time to provide complete protection.

  • Page 47: Section 6 Maintenance

    All relays should be tested periodically to identify and correct any problems that are found. Single phase relays such as the BE1-50/51B-217 are normally used in groups of four (three phase and ground) on the protected circuit. Only three are required at any one time to provide complete protection.

  • Page 48: Periodic Test

    BE1-50/51B-217 Maintenance This protection scheme also allows one unit at a time to be withdrawn from service for testing purposes without loosing protection during the test. Refer to Section 5 for recommended test setups. Periodic Test Periodic testing should consist of the following procedures.

  • Page 49: 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 the Table 7-1. Table 7-1. Changes Revision Summary of Changes ECO/Date Deleted all references to the service manual, corrected Figures 3-1 7476/12-17-99 and 5-2, and changed all drawings showing the front cover to portray...

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