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9252000898 Rev —

BE1-50/51B-235/-236 Functional Description

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SECTION 3

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FUNCTIONAL DESCRIPTION

TABLE OF CONTENTS

FUNCTIONAL DESCRIPTION ........................................................................................... 3-1

INTRODUCTION.................................................................................................................................... 3-1

FUNCTION BLOCK DESCRIPTIONS ................................................................................................... 3-1

Current Sensing Input ........................................................................................................................ 3-1

Power CT and Power Supply ............................................................................................................. 3-1

Signal Conditioning ............................................................................................................................ 3-1

Microprocessor ................................................................................................................................... 3-1

Outputs ............................................................................................................................................... 3-2

Target Indicators ................................................................................................................................ 3-2

Figures

Figure 3-1. Function Block Diagram .......................................................................................................... 3-1

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Содержание BE1-50B-235

Страница 1: ...INSTRUCTION MANUAL FOR OVERCURRENT RELAYS BE1 50 51B 235 and BE1 50 51B 236 Publication 9252000898 Revision 04 08 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 2: ...w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 3: ...ctional Description Installation and Maintenance Testing WARNING To avoid personal injury or equipment damage only qualified personnel should perform the procedures in this manual NOTE Be sure that th...

Страница 4: ...nd design of all features and options are subject to modification without notice Should further information be required contact Basler Electric BASLER ELECTRIC ROUTE 143 BOX 269 HIGHLAND IL 62249 USA...

Страница 5: ...following information provides a historical summary of the changes made to this instruction manual 9252000898 Revisions are listed in reverse chronological order Manual Revision and Date Change 04 08...

Страница 6: ...iv BE1 50 51B 235 236 Introduction 9252000898 Rev This page intentionally left blank w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 7: ...ENTS 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 CHARACTERISTIC CURVES A 1...

Страница 8: ...vi BE1 50 51B 235 236 Introduction 9252000898 Rev This page intentionally left blank w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 9: ...y Response 1 6 Transient Response 1 6 Harmonic Rejection 1 6 Target Indicators 1 6 Output Contacts 1 6 Type Tests 1 7 Environment 1 7 Physical 1 7 Figures Figure 1 1 Current Sensing Input Derating Cur...

Страница 10: ...ii BE1 50 51B 235 236 General Information 9252000898 Rev This page intentionally left blank w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 11: ...50 elements The 51 element offers timing characteristic curves similar to those used by GE IAC and ABB relays FEATURES A wide range of pickup settings and front panel selectable time characteristics...

Страница 12: ...0 51B 236 Pickup Setting Range 0 1 to 3 18 Aac Setting Increment 0 02 Aac Accuracy Sum of 2 and 5 mAac Dropout Dropout occurs at 95 of pickup value Characteristic Curves Available curve types follow I...

Страница 13: ...tic Curves illustrates the characteristic curve for the 50 A and 50 B elements Instantaneous Overcurrent B 50 B Element BE1 50 51B 235 Pickup Setting Range 1 to 15 9 Aac Setting increment 0 1 Aac Accu...

Страница 14: ...0 20 40 60 Ambient Temperature C Current Aac Figure 1 1 Current Sensing Input Derating Curve BE1 50 51B 235 BE1 50 51B 236 Continuous Rating 2 8 Aac 1 Second Rating 80 Aac Continuous rating is 2 8 Aac...

Страница 15: ...ent Amps Burden in VA rms Figure 1 3 Current Sensing Input Burden BE1 50 51B 235 BE1 50 51B 236 Burden Figure 1 4 illustrates the current sensing input burden characteristic At 0 1 Aac 57 0 At 1 0 Aac...

Страница 16: ...put The level of trip circuit current required to operate each target is individually controlled by a circuit board jumper See Section 2 Controls and Indicators for jumper locations and function assig...

Страница 17: ...ssignments 51 Element 1 10 50 A Element 1 10 50 B Element 2 10 Type Tests Isolation IEEE C37 90 Transient Surge IEEE C37 90 1 Radiated Interference IEEE C37 90 2 Electrostatic Discharge IEEE C37 90 3...

Страница 18: ...1 8 BE1 50 51B 235 236 General Information 9252000898 Rev This page intentionally left blank w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 19: ...CATORS 2 1 INTRODUCTION 2 1 FRONT PANEL CONTROLS AND INDICATORS 2 1 CIRCUIT BOARD CONTROLS 2 3 Figures Figure 2 1 Front Panel Controls and Indicators 2 1 Figure 2 2 Circuit Board Controls 2 3 Tables T...

Страница 20: ...ii BE1 50 51B 235 236 Controls and Indicators 9252000898 Rev This page intentionally left blank w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 21: ...on the front panel and circuit board FRONT PANEL CONTROLS AND INDICATORS Front panel controls and indicators are illustrated in Figure 2 1 and described in Table 2 1 The locators and descriptions of...

Страница 22: ...s are reset by pressing the target reset button locator I D Time Overcurrent Pickup Selector Switches These two rotary switches select the time overcurrent pickup current setting in amperes UNITS and...

Страница 23: ...tary selector switches a four position slide switch and two jumpers Circuit board controls are illustrated in Figure 2 2 and described in Table 2 2 The locators and descriptions of Table 2 2 correspon...

Страница 24: ...ion selects an instantaneous reset characteristic C Instantaneous Overcurrent B Pickup Selector Switches These two screwdriver adjusted rotary switches select the instantaneous overcurrent B 50 B pick...

Страница 25: ...ION 3 FUNCTIONAL DESCRIPTION 3 1 INTRODUCTION 3 1 FUNCTION BLOCK DESCRIPTIONS 3 1 Current Sensing Input 3 1 Power CT and Power Supply 3 1 Signal Conditioning 3 1 Microprocessor 3 1 Outputs 3 2 Target...

Страница 26: ...ii BE1 50 51B 235 236 Functional Description 9252000898 Rev This page intentionally left blank w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 27: ...of the power supply serves as a reference for automatic calibration Signal Conditioning Current from the signal CT is rectified and applied to three independent sets of scaling resistors controlled b...

Страница 28: ...r tripping duty A system circuit breaker controlled by the 51 or 50 A output contacts can be manually tripped by connecting a jumper across the Time Overcurrent Manual Trip jacks or the Instantaneous...

Страница 29: ...ON 4 1 GENERAL 4 1 FACTORY SETTINGS 4 1 INSTALLATION 4 1 CONNECTIONS 4 2 APPLICATION COORDINATION 4 3 MAINTENANCE 4 4 STORAGE 4 4 Figures Figure 4 1 Typical AC Connections 4 2 Figure 4 2 Typical DC Co...

Страница 30: ...ii BE1 50 51B 235 236 Installation 9252000898 Rev This page intentionally left blank w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 31: ...FF Westinghouse ABB type characteristic curves SW3 4 ON Integrating reset characteristics J1 pins 2 3 50 A minimum target operating current of 80 to 200 mA J2 pins 2 3 51 minimum target operating curr...

Страница 32: ...50 51B 235 236 Installation 9252000898 Rev CONNECTIONS Typical ac and dc connections are shown in Figures 4 1 and 4 2 Figure 4 1 Typical AC Connections w w w E l e c t r i c a l P a r t M a n u a l s...

Страница 33: ...0 51B 236 is configured with the following settings Integrating reset enabled SW3 4 ON ABB type curves selected SW3 3 OFF The feeder reclosing relay is set for two reclose attempts at 3 and 15 seconds...

Страница 34: ...alue TA because rewind has not gone to zero Figure 4 3 Coordination Timing Diagram MAINTENANCE BE1 50 51B 235 and BE1 50 51B 236 relays require no preventative maintenance other than periodic checking...

Страница 35: ...51B 236 One Ampere Sensing Input 5 6 Time Overcurrent 51 Pickup 5 6 Time Dial 5 6 Integrating Reset 5 6 Instantaneous Overcurrent A 50 A Pickup 5 7 Instantaneous Overcurrent B 50 B Pickup 5 8 Target...

Страница 36: ...ii BE1 50 51B 235 236 Testing 9252000898 Rev This page intentionally left blank w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 37: ...t operation Timer or counter Model BE1 50 51B 235 Five Ampere Sensing Input Time Overcurrent 51 Pickup 1 Connect and configure the relay for 51 pickup testing a Connect the test setup shown in Figure...

Страница 38: ...ord the elapsed time from when current is applied until the 51 output contacts close 3 Apply the current step from 0 to 1 5 Aac and record the elapsed time The elapsed time should be between 0 345 and...

Страница 39: ...wly increase the current applied to terminals 8 and 9 until the 50 A output contacts close The applied current should be between 7 815 and 8 185 Aac 6 Reduce the applied current to zero Figure 5 1 51...

Страница 40: ...e ABB type characteristic curves SW3 4 ON integrating reset characteristic c Set TIME DIAL to 0 0 d Set CURVE to S e Set TIME PICKUP to 1 0 f Set INST PICKUP 50 A to 90 g Set INST PICKUP 50 B accessed...

Страница 41: ...istic curves SW3 4 ON integrating reset characteristic c Set TIME DIAL to 0 0 d Set CURVE to S e Set TIME PICKUP to 1 0 f Set INST PICKUP 50 A to 90 g Set INST PICKUP 50 B accessed at the top side of...

Страница 42: ...or time dial testing a Connect the test setup shown in Figure 5 4 b Set circuit board switch SW3 as follows SW3 1 ON for 50 Hz operation or OFF for 60 Hz operation SW3 2 OFF no additional time delay f...

Страница 43: ...SW3 2 OFF no additional time delay for the 50 A element SW3 3 ON Westinghouse ABB type characteristic curves SW3 4 ON integrating reset characteristic c Set TIME DIAL to 0 0 d Set CURVE to S e Set TIM...

Страница 44: ...il the 50 B output contacts close The applied current should be between 0 387 and 0 413 Aac 3 Decrease the applied current until the 50 B output contacts open 4 Set INST PICKUP 50 B to 80 1 6 Aac 5 Sl...

Страница 45: ...ins 2 and 3 gives a minimum operating current of 80 to 200 mA 4 Remove the target and sensing current and reset the target 5 Set TIME PICKUP to 1 8 6 Set INST PICKUP 50 A to 0 2 7 Apply 0 4 Aac to ter...

Страница 46: ...r to the Time Overcurrent Manual Trip jacks Verify that the stop input of the test set timer recognizes a 51 contact closure 4 Remove the jumper and the current applied at relay terminals 8 and 9 5 Ap...

Страница 47: ...ff Similar to ABB CO 8 A 7 Figure A 7 Very Inverse V Time Characteristic Curve SW3 3 Off Similar to ABB CO 9 A 8 Figure A 8 Extremely Inverse E Time Characteristic Curve SW3 3 Off Similar to ABB CO 11...

Страница 48: ...ii BE1 50 51B 235 236 Characteristic Curves 9252000898 Rev This page intentionally left blank w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 49: ...be set for no intentional delay switch SW3 2 open or a fixed delay of 100 ms SW3 2 closed Figure 2 2 illustrates the location of SW3 The time delay of the 50 B element is not switch selectable and is...

Страница 50: ...1 000 0 5000 0 028 1 750 I ABB CO 8 A 6 8 9341 0 17966 1 000 2 0938 0 028 9 000 V ABB CO 9 A 7 5 4678 0 10814 1 000 2 0469 0 028 5 500 E ABB CO 11 A 8 7 7624 0 02758 1 000 2 0938 0 028 7 750 B BS142...

Страница 51: ...teristic Curves Figures A 2 through A 15 illustrate the BE1 50 51B 235 and BE1 50 51B 236 time overcurrent characteristic curves Figure A 2 Short Inverse S Time Characteristic Curve SW3 3 Off Similar...

Страница 52: ...A 4 BE1 50 51B 235 236 Characteristic Curves 9252000898 Rev Figure A 3 Long Inverse L Time Characteristic Curve SW3 3 Off Similar to ABB CO 5 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 53: ...9252000898 Rev BE1 50 51B 235 236 Characteristic Curves A 5 Figure A 4 Definite Time D Time Characteristic Curve Similar to ABB CO 6 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 54: ...A 6 BE1 50 51B 235 236 Characteristic Curves 9252000898 Rev Figure A 5 Moderately Inverse M Time Characteristic Curve Similar to ABB CO 7 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 55: ...9252000898 Rev BE1 50 51B 235 236 Characteristic Curves A 7 Figure A 6 Inverse I Time Characteristic Curve SW3 3 Off Similar to ABB CO 8 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 56: ...A 8 BE1 50 51B 235 236 Characteristic Curves 9252000898 Rev Figure A 7 Very Inverse V Time Characteristic Curve SW3 3 Off Similar to ABB CO 9 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 57: ...252000898 Rev BE1 50 51B 235 236 Characteristic Curves A 9 Figure A 8 Extremely Inverse E Time Characteristic Curve SW3 3 Off Similar to ABB CO 11 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 58: ...A 10 BE1 50 51B 235 236 Characteristic Curves 9252000898 Rev Figure A 9 BS142 Very Inverse BS142 B Time Characteristic Curve w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 59: ...9252000898 Rev BE1 50 51B 235 236 Characteristic Curves A 11 Figure A 10 BS142 Extremely Inverse BS142 C Time Characteristic Curve w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 60: ...A 12 BE1 50 51B 235 236 Characteristic Curves 9252000898 Rev Figure A 11 Short Inverse S2 Time Characteristic Curve SW3 3 On Similar to GE IAC 55 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 61: ...9252000898 Rev BE1 50 51B 235 236 Characteristic Curves A 13 Figure A 12 Long Inverse L2 Time Characteristic Curve SW3 3 On Similar to GE IAC 66 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 62: ...A 14 BE1 50 51B 235 236 Characteristic Curves 9252000898 Rev Figure A 13 Inverse I2 Time Characteristic Curve SW3 3 On Similar to GE IAC 51 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 63: ...9252000898 Rev BE1 50 51B 235 236 Characteristic Curves A 15 Figure A 14 Very Inverse V2 Time Characteristic Curve SW3 3 On Similar to GE IAC 53 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

Страница 64: ...16 BE1 50 51B 235 236 Characteristic Curves 9252000898 Rev Figure A 15 Extremely Inverse E2 Time Characteristic Curve SW3 3 On Similar to GE IAC 77 w w w E l e c t r i c a l P a r t M a n u a l s c o...

Страница 65: ...figured for integrating or instantaneous type reset Integrating reset simulates the disk reset of electromechanical relays and begins when the current decreases below 95 of pickup BE1 50 51B 235 and B...

Страница 66: ...50 51B 235 236 Characteristic Curves 9252000898 Rev Instantaneous Reset Reset occurs within 16 ms of when the current decreases to 95 of the pickup level w w w E l e c t r i c a l P a r t M a n u a l...

Страница 67: ...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 w w w E l e c t r i c a l P a r t M a n u a l s c o m...

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