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BE1-50/51B-233 General Information 

9252000897 Rev A 

P0048-11

 

Figure 1-3. Burden Characteristics 

 

Frequency Response 

A change of ±5 Hz from the nominal 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 shows that a relay set for 1 ampere pickup would pick up at 0.96 amperes with a current 
containing 40% seventh harmonic. This corresponds to a 10:1 rejection ratio. Other conditions may be 
evaluated in the same manner. 

 

Summary of Contents for BE1-50/51B-233

Page 1: ...INSTRUCTION MANUAL FOR OVERCURRENT RELAY BE1 50 51B 233 Publication 9252000897 Revision A 03 08...

Page 2: ......

Page 3: ...d Indicators Functional Description Installation and Maintenance Testing WARNING To avoid personal injury or equipment damage only qualified personnel should perform the procedures in this manual NOTE...

Page 4: ...peration The availability and 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...

Page 5: ...ng information provides a historical summary of the changes made to this instruction manual 9252000897 Revisions are listed in reverse chronological order Manual Revision and Date Change A 03 08 Updat...

Page 6: ...iv BE1 50 51B 233 Introduction 9252000897 Rev A This page intentionally left blank...

Page 7: ...233 Introduction v 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 TIM...

Page 8: ...vi BE1 50 51B 233 Introduction 9252000897 Rev A This page intentionally left blank...

Page 9: ...ient Response 1 6 Harmonic Response 1 6 Target Indicators 1 7 Output Contacts 1 7 Type Tests 1 7 Environment 1 8 Agency Recognition 1 8 Physical 1 8 Figures Figure 1 1 Integrating Reset Characteristic...

Page 10: ...ii BE1 50 51B 233 General Information 9252000897 Rev A This page intentionally left blank...

Page 11: ...l covers 15 popular time characteristics a wide range of pickup settings and field selectable instantaneous or integrating reset FEATURES A wide range of pickup settings and front panel selectable tim...

Page 12: ...Pickup Setting Range 0 5 to 15 9 Aac Setting Increment 0 1 Aac Accuracy 2 25 milliamperes at or above 0 5 ampere setting Dropout Dropout occurs at 95 of pickup value Timing Range 0 0 to 9 9 seconds in...

Page 13: ...losed On Curve Type Constants BE1 Similar To Figure Number A B C N K R S GE IAC 55 A 10 0 0286 0 0208 1 000 0 9844 0 028 0 0940 L GE IAC 66 A 11 2 3955 0 00002 1 000 0 3125 0 028 7 8001 D ABB CO 6 A 3...

Page 14: ...relay in the most sensitive state and may be used as a safety setting Pickup Setting Range 1 to 99 Aac Setting Increment 1 Aac Accuracy 2 25 milliamperes at or above 1 0 ampere setting Dropout Dropout...

Page 15: ...lays and still have the same reach This is because the BE1 50 51B 233 instantaneous element effectively eliminates the fault current transient overreach components When calculating BE1 50 51B 233 rela...

Page 16: ...auses 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 shows that a relay set for 1 ampere pickup would...

Page 17: ...2 minutes 3 amperes continuously and break 5 amperes 125 250 Vdc Make 30 amperes for 0 2 seconds carry 7 amperes for 2 minutes 3 amperes continuously and break 0 3 ampere Inductive Ratings 120 240 Va...

Page 18: ...f three mutually perpendicular planes swept over the range of 10 to 500 Hz for a total of 6 sweeps 15 minutes each sweep Shock Withstands 15 G in each of three mutually perpendicular planes Environmen...

Page 19: ...ROLS AND INDICATORS TABLE OF CONTENTS SECTION 2 CONTROLS AND INDICATORS 2 1 INTRODUCTION 2 1 Figures Figure 2 1 Front Panel Controls and Indicators 2 1 Figure 2 2 Location of SW3 2 2 Tables Table 2 1...

Page 20: ...ii BE1 50 51B 233 Controls and Indicators 9252000897 Rev A This page intentionally left blank...

Page 21: ...Figure 2 1 illustrates the front panel controls and indicators of the BE1 50 51B 233 Figure 2 2 illustrates the location of switch SW3 Both illustrations have lettered call outs that correspond to th...

Page 22: ...2 2 BE1 50 51B 233 Controls and Indicators 9252000897 Rev A P0053 50 SW3 Figure 2 2 Location of SW3...

Page 23: ...me provided by an electromechanical relay at its maximum dial setting G TIME MANUAL TRIP Test Points When shorted the test points provide a secure means to manually trip the controlled breaker Jacks a...

Page 24: ...2 4 BE1 50 51B 233 Controls and Indicators 9252000897 Rev A This page intentionally left blank...

Page 25: ...SCRIPTION TABLE OF CONTENTS SECTION 3 FUNCTIONAL DESCRIPTION 3 1 GENERAL 3 1 FUNCTIONAL DESCRIPTION 3 1 Sensing Input 3 1 Power Supply 3 1 Instantaneous Signal 3 1 Time Signal 3 1 Microprocessor 3 1 P...

Page 26: ...ii BE1 50 51B 233 Functional Description 9252000897 Rev A This page intentionally left blank...

Page 27: ...the microprocessor supervisor circuit When the microprocessor is active and executing code the ACTIVE PICKUP LED is green When the input current falls below an acceptable level the supervisor circuit...

Page 28: ...he TIME or INST MANUAL TRIP front panel test points Current flow in the trip circuit is indicated by the operation of the target The targets will not operate without adequate operating power for the r...

Page 29: ...NTENTS SECTION 4 INSTALLATION 4 1 GENERAL 4 1 FACTORY SETTINGS 4 1 INSTALLATION 4 1 APPLICATION COORDINATION 4 1 CONNECTIONS 4 3 MAINTENANCE 4 4 STORAGE 4 4 Figures Figure 4 1 Coordination Timing Diag...

Page 30: ...ii BE1 50 51B 233 Installation 9252000897 Rev A This page intentionally left blank...

Page 31: ...ile the relay is in service may cause tripping Perform the following procedures to install the BE1 50 51B 233 relay Select the desired relay settings on your new BE1 50 51B 233 relay Remove the existi...

Page 32: ...tic curve equation K BD C M AD T N Trip 028 0 2 02758 0 1 10 2 7624 7 0938 2 028 0 05516 0 1 10806 124 5248 15 seconds 0 29 From the reset characteristic curve equation 1 M RD T 2 Reset seconds 15 5 1...

Page 33: ...ind Trip Full T Occurence This Trip Second Operation 15 5 3 0 209 TB seconds 0 040 TB Third Operation 15 5 11 96 0 209 TC seconds 0 161 TC CONNECTIONS Typical ac input and dc control connections are s...

Page 34: ...ould be performed according to scheduled practices A recommended periodic test is provided in Section 5 If the relay fails to function properly contact the Technical Sales Support Department of Basler...

Page 35: ...ESTING 5 1 GENERAL 5 1 DIELECTRIC TEST 5 1 OPERATIONAL TEST PROCEDURE 5 1 Test Equipment Required 5 1 Test Procedure 5 3 SETTING THE RELAY 5 5 PERIODIC TESTS 5 5 General 5 5 Periodic Test 5 5 Figures...

Page 36: ...ii BE1 50 51B 233 Testing 9252000897 Rev A This page intentionally left blank...

Page 37: ...ng procedures verify operation of relays BE1 50 51B 233 The test setup of Figures 5 1 and 5 2 are intended primarily as an illustration of the principles involved Other test setups known to be capable...

Page 38: ...5 2 BE1 50 51B 233 Testing 9252000897 Rev A Figure 5 1 Pickup and Timing Test Setup Figure 5 2 Target Operational Test Setup...

Page 39: ...minals 8 and 9 PICKUP LED should turn RED at a maximum input current of 0 550 ampere Step 2 Decrease input current until PICKUP LED turns GREEN then OFF Step 3 Set TIME PICKUP to 2 2 Step 4 Slowly inc...

Page 40: ...VE to S Set TIME PICKUP to 1 0 Set INST PICKUP to 90 Step 1 Prepare to apply 1 5 amperes input current to terminals 8 and 9 and record the elapsed time from when current is applied until TIME output c...

Page 41: ...ing PERIODIC TESTS General All relays should be tested periodically to identify and correct any problems that are found Single phase relays such as the BE1 50 51B 233 are normally used in groups of fo...

Page 42: ...5 6 BE1 50 51B 233 Testing 9252000897 Rev A Step 5 Verify that the targets operate with one ac ampere of trip current in the trip circuits and that they can be reset using the RESET BUTTON...

Page 43: ...imilar to ABB CO 8 A 5 Figure A 6 Time Characteristic Curve V Very Inverse SW3 3 OFF Similar to ABB CO 9 A 6 Figure A 7 Time Characteristic Curve E Extremely Inverse SW3 3 OFF Similar to ABB CO 11 A 7...

Page 44: ...ii BE1 50 51B 233 Time Characteristic Curves 9252000897 Rev A This page intentionally left blank...

Page 45: ...X A TIME CHARACTERISTIC CURVES TIME CHARACTERISTIC CURVES Figures A 1 through A 14 illustrate the time characteristic curves that are programmed into the nonvolatile memory of this relay Figure A 1 Ti...

Page 46: ...A 2 BE1 50 51B 233 Time Characteristic Curves 9252000897 Rev A Figure A 2 Time Characteristic Curve L Long Inverse SW3 3 OFF Similar to ABB CO 5...

Page 47: ...9252000897 Rev A BE1 50 51B 233 Time Characteristic Curves A 3 Figure A 3 Time Characteristic Curve D Definite Time Similar to ABB CO 6...

Page 48: ...A 4 BE1 50 51B 233 Time Characteristic Curves 9252000897 Rev A Figure A 4 Time Characteristic Curve M Moderately Inverse Similar to ABB CO 7...

Page 49: ...9252000897 Rev A BE1 50 51B 233 Time Characteristic Curves A 5 Figure A 5 Time Characteristic Curve I Inverse SW3 3 OFF Similar to ABB CO 8...

Page 50: ...A 6 BE1 50 51B 233 Time Characteristic Curves 9252000897 Rev A Figure A 6 Time Characteristic Curve V Very Inverse SW3 3 OFF Similar to ABB CO 9...

Page 51: ...9252000897 Rev A BE1 50 51B 233 Time Characteristic Curves A 7 Figure A 7 Time Characteristic Curve E Extremely Inverse SW3 3 OFF Similar to ABB CO 11...

Page 52: ...A 8 BE1 50 51B 233 Time Characteristic Curves 9252000897 Rev A Figure A 8 Time Characteristic Curve BS142 B BS142 Very Inverse...

Page 53: ...9252000897 Rev A BE1 50 51B 233 Time Characteristic Curves A 9 Figure A 9 Time Characteristic Curve BS142 C BS142 Extremely Inverse...

Page 54: ...A 10 BE1 50 51B 233 Time Characteristic Curves 9252000897 Rev A Figure A 10 Time Characteristic Curve S2 Short Inverse SW3 3 ON Similar to GE IAC 55...

Page 55: ...9252000897 Rev A BE1 50 51B 233 Time Characteristic Curves A 11 Figure A 11 Time Characteristic Curve L2 Long Inverse SW3 3 ON Similar to GE IAC 66...

Page 56: ...A 12 BE1 50 51B 233 Time Characteristic Curves 9252000897 Rev A Figure A 12 Time Characteristic Curve I2 Inverse SW3 3 ON Similar to GE IAC 51...

Page 57: ...9252000897 Rev A BE1 50 51B 233 Time Characteristic Curves A 13 Figure A 13 Time Characteristic Curve V2 Very Inverse SW3 3 ON Similar to GE IAC 53...

Page 58: ...A 14 BE1 50 51B 233 Time Characteristic Curves 9252000897 Rev A Figure A 14 Time Characteristic Curve E2 Extremely Inverse SW3 3 ON Similar to GE IAC 77...

Page 59: ...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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