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A-10 BE1-50/51B-237/-238

Characteristic Curves

9252000899 Rev —

Figure A-9. BS142 Very Inverse (BS142-B) Time Characteristic Curve

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Summary of Contents for BE1-50/51B-237

Page 1: ...INSTRUCTION MANUAL FOR OVERCURRENT RELAYS BE1 50 51B 237 and BE1 50 51B 238 Publication 9252000899 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...

Page 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...

Page 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...

Page 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...

Page 5: ...following information provides a historical summary of the changes made to this instruction manual 9252000899 Revisions are listed in reverse chronological order Manual Revision and Date Change 04 08...

Page 6: ...iv BE1 50 51B 237 238 Introduction 9252000899 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...

Page 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...

Page 8: ...vi BE1 50 51B 237 238 Introduction 9252000899 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...

Page 9: ...e 1 5 Transient Response 1 5 Harmonic Rejection 1 5 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 Curve BE1 50...

Page 10: ...ii BE1 50 51B 237 238 General Information 9252000899 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...

Page 11: ...are self powered compatible with 50 or 60 Hz power systems and have three protection elements one time overcurrent 51 element and two instantaneous overcurrent 50 elements The 51 element offers timing...

Page 12: ...nd lists the applicable constants Curve Types Short Inverse Long Inverse Definite Time Moderately Inverse Inverse Very Inverse Extremely Inverse BS142 Very Inverse BS142 Extremely Inverse Fixed Time T...

Page 13: ...of 2 and 5 mAac Dropout Dropout occurs at 95 of pickup value Time Delay Fixed at no intentional delay Appendix A Characteristic Curves illustrates the characteristic curve for the 50 A and 50 B elemen...

Page 14: ...3 2 40 20 0 20 40 60 Ambient Temperature C Current Aac Figure 1 2 Current Sensing Input Derating Curve BE1 50 51B 238 BE1 50 51B 237 Burden Figure 1 3 illustrates the current sensing input burden char...

Page 15: ...nput Current Amps Burden in VA rms Figure 1 4 Current Sensing Input Burden BE1 50 51B 238 Frequency Response A change of 5 Hz from the nominal 50 60 Hz current causes 0 5 change in the current require...

Page 16: ...d 2 0 9 to 2 25 A Jumper Position Pins 2 and 3 80 mA to 200 mA Minimum operating current values See Output Contacts for the maximum acceptable levels of trip circuit currents Output Contacts Output co...

Page 17: ...90 1 Radiated Interference IEEE C37 90 2 Electrostatic Discharge IEEE C37 90 3 Vibration IEC 255 21 1 Shock and Bump IEC 255 21 2 Environment Operating Temperature 40 to 70 C 40 to 158 F Storage Temp...

Page 18: ...1 8 BE1 50 51B 237 238 General Information 9252000899 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...

Page 19: ...CIRCUIT BOARD CONTROLS 2 3 Figures Figure 2 1 Front Panel Controls and Indicators 2 1 Figure 2 2 Circuit Board Controls 2 3 Figure 2 3 View of 50 B Pickup Selector Switches BE1 50 51B 237 2 5 Figure 2...

Page 20: ...ii BE1 50 51B 237 238 Controls and Indicators 9252000899 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...

Page 21: ...s are located 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 des...

Page 22: ...current functions instantaneous pickup settings of 00 will affect the calibration of the time functions Time pickup settings of 00 also affect instantaneous functions F Target Indicators Red target in...

Page 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...

Page 24: ...Pickup Selector Switches These two screwdriver adjusted rotary switches select the instantaneous overcurrent B 50 B pickup current setting in amperes The 50 B pickup switches are accessed on the top s...

Page 25: ...51B 237 238 Controls and Indicators 2 5 Figure 2 3 View of 50 B Pickup Selector Switches BE1 50 51B 237 Figure 2 4 View of 50 B Pickup Selector Switches BE1 50 51B 238 w w w E l e c t r i c a l P a r...

Page 26: ...2 6 BE1 50 51B 237 238 Controls and Indicators 9252000899 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...

Page 27: ...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...

Page 28: ...ii BE1 50 51B 237 238 Functional Description 9252000899 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...

Page 29: ...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...

Page 30: ...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...

Page 31: ...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...

Page 32: ...ii BE1 50 51B 237 238 Installation 9252000899 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...

Page 33: ...ntegrating 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 current of 80 to 200 mA INSTALLATION Select the desired relay...

Page 34: ...50 51B 237 238 Installation 9252000899 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...

Page 35: ...51B 238 is configured with the following settings Integrating reset enabled SW3 4 ON GE IAC type curves selected SW3 3 ON The feeder reclosing relay is set for two reclose attempts at 3 and 15 second...

Page 36: ...alue TA because rewind has not gone to zero Figure 4 3 Coordination Timing Diagram MAINTENANCE BE1 50 51B 237 and BE1 50 51B 238 relays require no preventative maintenance other than periodic checking...

Page 37: ...51B 238 One Ampere Sensing Input 5 6 Time Overcurrent 51 Pickup 5 6 Time Dial 5 6 Integrating Reset 5 7 Instantaneous Overcurrent A 50 A Pickup 5 7 Instantaneous Overcurrent B 50 B Pickup 5 8 Target I...

Page 38: ...ii BE1 50 51B 237 238 Testing 9252000899 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...

Page 39: ...target operation Timer or counter Model BE1 50 51B 237 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 Fi...

Page 40: ...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...

Page 41: ...l the 50 A output contacts open 4 Set INST PICKUP 50 A to 08 5 Slowly increase the current applied to terminals 5 and 6 until the 50 A output contacts close The applied current should be between 7 815...

Page 42: ...50 B Pickup Test Setup Target Indicators 1 Connect and configure the relay for target indicator testing a Connect the test setup shown in Figure 5 3 b Set circuit board switch SW3 as follows SW3 1 ON...

Page 43: ...antaneous target operates at the level of current determined by the Target Operating Current Jumpers 9 Remove the target and sensing current and reset the target Figure 5 3 Target Indicator Test Setup...

Page 44: ...6 until the Active Pickup LED turns red The applied current should be no greater than 0 11 Aac 3 Decrease the applied current until the Active Pickup LED changes from red to green and then off 4 Set T...

Page 45: ...tantaneous Overcurrent A 50 A Pickup 1 Connect and configure the relay for 50 A pickup 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...

Page 46: ...haracteristic c Set TIME DIAL to 0 0 d Set CURVE to S e Set TIME PICKUP to 3 18 f Set INST PICKUP 50 A to 18 0 g Set INST PICKUP 50 B accessed at the top side of the assembly to 20 0 4 Aac 2 Apply and...

Page 47: ...ime target operates at the level of current determined by the Target Operating Current Jumpers The Target Operating Current Jumpers are located on the circuit board and identified as J1 and J2 J1 sets...

Page 48: ...t INST PICKUP 50 B accessed at the top side of the assembly at 20 0 4 Aac 2 Apply 0 18 Aac to terminals 5 and 6 0 18 Aac provides relay operating power but is below the pickup threshold 3 Connect a ju...

Page 49: ...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...

Page 50: ...ii BE1 50 51B 237 238 Characteristic Curves 9252000899 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...

Page 51: ...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...

Page 52: ...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...

Page 53: ...teristic Curves Figures A 2 through A 15 illustrate the BE1 50 51B 237 and BE1 50 51B 238 time overcurrent characteristic curves Figure A 2 Short Inverse S Time Characteristic Curve SW3 3 Off Similar...

Page 54: ...A 4 BE1 50 51B 237 238 Characteristic Curves 9252000899 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...

Page 55: ...9252000899 Rev BE1 50 51B 237 238 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...

Page 56: ...A 6 BE1 50 51B 237 238 Characteristic Curves 9252000899 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...

Page 57: ...9252000899 Rev BE1 50 51B 237 238 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...

Page 58: ...A 8 BE1 50 51B 237 238 Characteristic Curves 9252000899 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...

Page 59: ...252000899 Rev BE1 50 51B 237 238 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...

Page 60: ...A 10 BE1 50 51B 237 238 Characteristic Curves 9252000899 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...

Page 61: ...9252000899 Rev BE1 50 51B 237 238 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...

Page 62: ...A 12 BE1 50 51B 237 238 Characteristic Curves 9252000899 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...

Page 63: ...9252000899 Rev BE1 50 51B 237 238 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...

Page 64: ...A 14 BE1 50 51B 237 238 Characteristic Curves 9252000899 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...

Page 65: ...9252000899 Rev BE1 50 51B 237 238 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...

Page 66: ...16 BE1 50 51B 237 238 Characteristic Curves 9252000899 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...

Page 67: ...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 237 and B...

Page 68: ...50 51B 237 238 Characteristic Curves 9252000899 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...

Page 69: ...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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