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9252000892 Rev A 

BE1-50/51B-229 Functional Description 

i 

SECTION 3 

•

 FUNCTIONAL DESCRIPTION 

TABLE OF CONTENTS 

 

SECTION 3 

•

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

 

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

 

RELAY FUNCTIONS AND OPERATING FEATURES .......................................................................... 3-1

 

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

 

Power Supply ..................................................................................................................................... 3-1

 

Instantaneous Signal.......................................................................................................................... 3-1

 

Time Signal......................................................................................................................................... 3-1

 

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

 

Power-Off Sensing ............................................................................................................................. 3-2

 

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

 

Figures 

Figure 3-1. BE1-50/51-229 Function Block Diagram................................................................................. 3-1 

 

Summary of Contents for BE1-50/51B-229

Page 1: ...INSTRUCTION MANUAL FOR OVERCURRENT RELAY BE1 50 51B 229 Publication 9252000892 Revision A 03 08 ...

Page 2: ......

Page 3: ...nd 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 Be sure that the relay is hard wired to earth ground with no smaller than 12 AWG copper wire attached to the ground terminal on the rear of the unit case When the relay is configured in a system wit...

Page 4: ...eration 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 269 HIGHLAND IL 62249 USA http www basler com info basler com PHONE 1 618 654 2341 FAX 1 618 654 2351 CONFIDENTIAL INFORMATION of Basler Electric Highland Illinois USA It is loaned for confidential us...

Page 5: ...ical summary of the changes made to this instruction manual 9252000892 Revisions are listed in reverse chronological order Manual Revision and Date Change A 03 08 Updated front panel drawings Added publication number and revision level to the footer of each page Added GOST R to Section 1 06 03 Initial release ...

Page 6: ...iv BE1 50 51B 229 Introduction 9252000892 Rev A This page intentionally left blank ...

Page 7: ... 229 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 TIME CHARACTERISTIC CURVES A 1 ...

Page 8: ...vi BE1 50 51B 229 Introduction 9252000892 Rev A This page intentionally left blank ...

Page 9: ...sponse 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 Patent 1 8 Figures Figure 1 1 Integrating Reset Characteristic Curve 1 4 Figure 1 2 Instantaneous Characteristic Curves 1 5 Figure 1 3 Harmonic Rejection 1 7 Figure 1 4 BE1 50 51B 229 Burden Characteristics 1 6 Tables Table 1 1 Type SFC Relays Suitable for D...

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Page 11: ...y 3 Attach the cover adapter plate to the existing case 4 Insert the BE1 50 51B 229 relay into the case 5 Install the existing SFC connection plug 6 Install the new Basler Electric relay cover FEATURES BE1 50 51B 229 Overcurrent Relays have the following standard features Independent time and instantaneous elements Secure breaker tripping from the relay front panel Direct reading front panel contr...

Page 12: ...e Timing Range 0 0 to 9 9 seconds in 0 1 second steps Timing Accuracy The timing accuracy is the sum of 1 cycle 2 percent over the range of 1 3 to 40 times tap This accuracy is for a given measured multiple of tap The measurement of the multiple of tap has an accuracy that is the sum of 2 percent 25 milliamperes Timing Accuracy Example Pickup Setting 5 Aac Current Applied 6 5 Aac Multiple Toleranc...

Page 13: ... A 4 0 3022 0 12840 1 000 0 5000 0 028 1 7500 I GE IAC 51 A 12 0 2747 0 1042 1 000 0 4375 0 028 0 8868 V GE IAC 53 A 13 4 4309 0 0991 1 000 1 9531 0 028 5 8231 E GE IAC 77 A 14 4 9883 0 0129 1 000 2 0469 0 028 4 7742 B BS142 B A 8 1 4636 0 00000 1 000 1 0469 0 028 3 2500 C BS142 C A 9 8 2506 0 00000 1 000 2 0469 0 028 8 0000 F None N A 0 0000 1 00000 0 000 0 0000 0 000 1 0000 Notes for Tables 1 2 ...

Page 14: ...ng Range 1 to 99 Aac Setting Increment 1 Aac Accuracy 2 25 mAac at or above 1 0 Aac setting Dropout Dropout occurs at 95 of pickup value Curve Characteristics The instantaneous characteristic curves of the BE1 50 51B 229 are similar to those of standard electromechanical relays However the trip time may be slightly longer in applications where the initial current through the relay is less than 0 4...

Page 15: ...t in the BE1 50 51B 229 relay may be set lower than the instantaneous element in SFC relays and still have the same reach This is because the BE1 50 51B 229 instantaneous element effectively eliminates the fault current transient overreach components When calculating BE1 50 51B 229 instantaneous element settings calculate the symmetrical value without any adder for transient overreach Instantaneou...

Page 16: ... the current required for pickup Transient Response 10 overreach with system time constants up to 40 ms Harmonic Response Figure 1 4 illustrates harmonic rejection and shows that a relay with a 1 ampere pickup setting would pick up at 0 96 amperes when the current contains 40 percent seventh harmonic This corresponds to a 10 1 rejection ratio Other conditions may be evaluated in the same manner ...

Page 17: ...r 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 Vac 125 250 Vdc Make and carry 30 amperes for 0 2 seconds carry 7 amperes for 2 minutes 3 amperes continuously and break 0 3 ampere L R 0 04 Type Tests Isolation Meets IEC 255 5 and exceeds IEEE C37 90...

Page 18: ...ndicular 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 Environment Operating Temperature 40 F to 158 F 40 C to 70 C Storage Temperature 50 F to 122 F 58 C to 50 C Agency Recognition GOST R Certification GOST R certified No POCC US ME05 B03391 complies with the relevant standards of Goss...

Page 19: ...ENTS SECTION 2 CONTROLS AND INDICATORS 2 1 INTRODUCTION 2 1 FRONT PANEL 2 1 CIRCUIT BOARD 2 2 Figures Figure 2 1 Front Panel Controls and Indicators 2 1 Figure 2 2 Circuit Board Controls 2 3 Tables Table 2 1 Front Panel Control and Indicator Descriptions 2 2 Table 2 2 Circuit Board Control Descriptions 2 3 ...

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Page 21: ...N BE1 50 51B 229 controls and indicators are located on the front panel and on the relay circuit board FRONT PANEL Front panel controls and indicators are shown in Figure 2 1 The locator letters in Figure 2 1 correspond to the descriptions listed in Table 2 1 Figure 2 1 Front Panel Controls and Indicators ...

Page 22: ...t its maximum time dial setting E Curve Switch This switch selects one of nine inverse time functions or one fixed time function F Time 51 Pickup Switches Two selector switches units and tenths set the time overcurrent pickup level in amperes Changing the pickup setting while the relay is in service may cause tripping G Targets Gravity latched target indicators are provided for the time over curre...

Page 23: ...or the instantaneous element Placing SW3 2 in the on closed position adds 100 milliseconds to the instantane ous time delay SW3 3 selects either GE IAC type curves see Table 1 4 or ABB type curves see Tables 1 3 and 1 4 Placing SW3 3 in the on closed position selects GE IAC type curves Placing SW3 3 in the off open position selects ABB type curves SW3 4 selects either instantaneous or integrating ...

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Page 25: ...CONTENTS SECTION 3 FUNCTIONAL DESCRIPTION 3 1 INTRODUCTION 3 1 RELAY FUNCTIONS AND OPERATING FEATURES 3 1 Sensing Input 3 1 Power Supply 3 1 Instantaneous Signal 3 1 Time Signal 3 1 Microprocessor 3 1 Power Off Sensing 3 2 Relay Outputs 3 2 Figures Figure 3 1 BE1 50 51 229 Function Block Diagram 3 1 ...

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Page 27: ...ng power A precision 5 Vdc output from the Power Supply serves as a reference for automatic calibration Instantaneous Signal Current from the Signal CT is rectified and applied to the Instantaneous Scaling Resistors controlled by the Instantaneous Pickup Selector Switches SW1 and SW2 The analog voltage of the instantaneous input signal developed across the Instantaneous Scaling Resistors is filter...

Page 28: ... SW5 the Active Pickup LED changes from green to red and the Time 51 output contacts close in accordance with the time characteristic equation If the sensed current exceeds the setting of the Instantaneous Pickup Selector Switches SW1 and SW2 the Instantaneous 50 output contacts close Power Off Sensing Power Off Sensing circuitry measures the voltage across a capacitor at power up and power down T...

Page 29: ... OF CONTENTS SECTION 4 INSTALLATION 4 1 RECEIPT AND INSPECTION 4 1 CONNECTIONS 4 1 SETTING THE RELAY 4 2 Application Coordination Example 4 2 INSTALLING THE RELAY 4 3 Figures Figure 4 1 AC Connections 4 1 Figure 4 2 DC Connections 4 2 Figure 4 3 Coordination Timing Diagram 4 3 ...

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Page 31: ...lectric If the relay will not be installed immediately place the relay in its original shipping carton and store in a dry dust free environment Proper relay operation may be confirmed by performing the test procedures of Section 5 Testing CONNECTIONS Typical ac connections for the BE1 50 51B 229 relay are shown in Figure 4 1 Figure 4 2 shows typical dc connections for the relay Figure 4 1 AC Conne...

Page 32: ...oviding primary protection for a radial distribution feeder An electromechanical overcurrent relay with extremely inverse timing provides protection for the transformer and bus To improve coordination with the electromechanical relay the BE1 50 51B 229 relay with integrating reset characteristic has the time characteristic curve E extremely inverse selected SW3 3 open or off and the time dial set ...

Page 33: ...before relay is reset is FullRewind RewindTime FullTrip T Occurance This Trip Second Operation seconds 0 040 T 5 15 3 209 0 B B T Third Operation seconds 0 161 T 5 15 96 11 209 0 c C T INSTALLING THE RELAY Once the BE1 50 51B 229 relay is configured with the desired settings it can be installed by performing the following steps 1 Remove the existing SFC relay from the case 2 Attach the cover adapt...

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Page 35: ...ECTRIC TESTING 5 1 OPERATIONAL TESTING 5 1 Test Equipment Required 5 1 Time Pickup Test 5 1 Instantaneous Pickup Test 5 3 Time Dial Test 5 3 Target Test 5 3 Manual Trip Test 5 3 Integrating Reset Test 5 4 PERIODIC TESTING 5 4 Figures Figure 5 1 Pickup and Timing Test Setup 5 2 Figure 5 2 Target Operational Test Setup 5 2 ...

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Page 37: ...operation Timer or counter Time Pickup Test 1 Perform the following preliminary steps a Connect test setup as shown in Figure 5 1 b Configure SW3 as follows SW3 1 off for 60 Hz operation on for 50 Hz operation SW3 2 off SW3 3 on and SW3 4 on c Set the time dial at 0 0 d Set the curve at S e Set the time pickup at 0 5 f Set the instantaneous pickup at 90 2 Slowly increase the current applied to ter...

Page 38: ...NT SOURCE INPUT STOP TIMER START AMPS TEST SET D1148 25 12 09 99 Figure 5 1 Pickup and Timing Test Setup BE1 50 51B 6 5 CURRENT SOURCE INPUT STOP TIMER START AMPS TEST SET 1 0A CURRENT LIMITER TARGET CURRENT 2 3 INST 1 TIME D1148 24 12 09 99 Figure 5 2 Target Operational Test Setup ...

Page 39: ...rve at S e Set the time pickup at 1 0 f Set the instantaneous pickup at 90 2 Prepare to apply 1 5 Aac to terminals 5 and 6 and record the elapsed time from when current is applied until the time 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 0 424 seconds This tolerance is greater than 2 because it is the ac...

Page 40: ...e BE1 50 51B 229 are normally used in groups of four three phases and ground on the protected circuit This scheme allows one relay to be withdrawn and tested without losing protection Only three relays are required at any given time to sense all types of faults on a grounded wye system Refer to Figures 5 1 and 5 2 for recommended test setups Periodic testing should consist of the following procedu...

Page 41: ...lar to ABB CO 7 A 4 Figure A 5 I Inverse SW3 3 Off Similar to ABB CO 8 A 5 Figure A 6 V Very Inverse SW3 3 Off Similar to ABB CO 9 A 6 Figure A 7 E Extremely Inverse SW3 3 Off Similar to ABB CO 11 A 7 Figure A 8 BS142 B Very Inverse A 8 Figure A 9 BS142 C Extremely Inverse A 9 Figure A 10 S2 Short Inverse SW3 3 On Similar to GE IAC 55 A 10 Figure A 11 L2 Long Inverse SW3 3 On Similar to GE IAC 66 ...

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Page 43: ...urves A 1 APPENDIX A TIME CHARACTERISTIC CURVES INTRODUCTION Figures A 1 through A 14 illustrate the characteristic curves that are programmed into the nonvolatile memory of the BE1 50 51B 229 relay Figure A 1 S Short Inverse SW3 3 Off Similar to ABB CO 2 ...

Page 44: ...A 2 BE1 50 51B 229 Time Characteristic Curves 9252000892 Rev A Figure A 2 L Long Inverse SW3 3 Off Similar to ABB CO 5 ...

Page 45: ...9252000892 Rev A BE1 50 51B 229 Time Characteristic Curves A 3 Figure A 3 D Definite Time Similar to ABB CO 6 ...

Page 46: ...A 4 BE1 50 51B 229 Time Characteristic Curves 9252000892 Rev A Figure A 4 M Moderately Inverse Similar to ABB CO 7 ...

Page 47: ...9252000892 Rev A BE1 50 51B 229 Time Characteristic Curves A 5 Figure A 5 I Inverse SW3 3 Off Similar to ABB CO 8 ...

Page 48: ...A 6 BE1 50 51B 229 Time Characteristic Curves 9252000892 Rev A Figure A 6 V Very Inverse SW3 3 Off Similar to ABB CO 9 ...

Page 49: ...9252000892 Rev A BE1 50 51B 229 Time Characteristic Curves A 7 Figure A 7 E Extremely Inverse SW3 3 Off Similar to ABB CO 11 ...

Page 50: ...A 8 BE1 50 51B 229 Time Characteristic Curves 9252000892 Rev A Figure A 8 BS142 B Very Inverse ...

Page 51: ...9252000892 Rev A BE1 50 51B 229 Time Characteristic Curves A 9 Figure A 9 BS142 C Extremely Inverse ...

Page 52: ...A 10 BE1 50 51B 229 Time Characteristic Curves 9252000892 Rev A Figure A 10 S2 Short Inverse SW3 3 On Similar to GE IAC 55 ...

Page 53: ...9252000892 Rev A BE1 50 51B 229 Time Characteristic Curves A 11 Figure A 11 L2 Long Inverse SW3 3 On Similar to GE IAC 66 ...

Page 54: ...A 12 BE1 50 51B 229 Time Characteristic Curves 9252000892 Rev A Figure A 12 I2 Inverse SW3 3 On Similar to GE IAC 51 ...

Page 55: ...9252000892 Rev A BE1 50 51B 229 Time Characteristic Curves A 13 Figure A 13 V2 Very Inverse SW3 3 On Similar to GE IAC 53 ...

Page 56: ...A 14 BE1 50 51B 229 Time Characteristic Curves 9252000892 Rev A Figure A 14 E2 Extremely Inverse SW3 3 On Similar to GE IAC 77 ...

Page 57: ...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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