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9137200997 Rev D

BE1-51 Functional Description

3-1

SECTION 3

•

FUNCTIONAL DESCRIPTION

GENERAL

BE1-51 Time Overcurrent Relays are microprocessor-based devices that provide protection for the phase
or phase and neutral time and instantaneous overcurrent functions.

BLOCK DIAGRAM ANALYSIS

The following block diagram analysis is referenced to Figure 3-1. A microprocessor (not illustrated in
Figure 3-1) processes signals, performs logic functions, and all of the time overcurrent computations.

Figure 3-1. Functional Block Diagram

Courtesy of NationalSwitchgear.com

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Содержание BE1-51

Страница 1: ...TIMING T ENERGIZE OUTPUT 1 2 PUSH TO B ELEMENT A N TIME DIAL A OFF NEUTRAL INST FUNCTION POWER TIME 1 INST C TIMING 1 A TAP J INST 2 TAP TIME DIAL CAL A J NEUTRAL DEFEAT TAP CAL 2 INST INST PHASE 1 ON...

Страница 2: ...Courtesy of NationalSwitchgear com...

Страница 3: ...l Description Installation Tests and Adjustments WARNING To avoid personal injury or equipment damage only qualified personnel should perform the procedures in this manual NOTE Be sure that the relay...

Страница 4: ...ailability 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 I...

Страница 5: ...l design Added Note 3 to Figure 1 1 Corrected inductive output specification from 0 1 to 0 3 A Changed TOC specification Added instantaneous response time with graph 1 1 Deleted specification referenc...

Страница 6: ...iv BE1 51 Introduction 9137200997 Rev D This page intentionally left blank Courtesy of NationalSwitchgear com...

Страница 7: ...N 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 TESTS AND ADJUSTMENTS 5 1 APPENDIX A TIME OVERCURRENT CHARAC...

Страница 8: ...vi BE1 51 Introduction 9137200997 Rev D This page intentionally left blank Courtesy of NationalSwitchgear com...

Страница 9: ...rent Pickup Selection Range 1 5 Time Overcurrent Measuring Accuracy 1 5 Time Overcurrent Dropout Ratio 1 5 Instantaneous Overcurrent Pickup Range 1 5 Instantaneous Overcurrent Measuring Accuracy 1 5 I...

Страница 10: ...ii BE1 51 General Information 9137200997 Rev D This page intentionally left blank Courtesy of NationalSwitchgear com...

Страница 11: ...switch selectable Sixty nine characteristic curves and three timing options are available They are Characteristic curves Seven inverse time Nine I2 t Seven inverse time with extended timing range Nine...

Страница 12: ...hen a time trip output signal is generated This type of integrating time delay characteristic simulates the operating characteristics of an electromechanical overcurrent relay Built In Test A built in...

Страница 13: ...o instantaneous overcurrent outputs are optionally available Each is adjustable up to 40 times the time overcurrent pickup point When the sensed current exceeds the instantaneous overcurrent pickup po...

Страница 14: ...s H Three Phase and Neutral sensing 3 Sensing input range of 1 5 to 12 0 amperes for phase and 0 5 to 4 0 amperes for neutral E Normally open outputs Z1 Switch selectable time curves P Operating power...

Страница 15: ...tion Range Continuously adjustable over the current sensing input ranges specified in the Style Chart Figure 1 1 Time Overcurrent Measuring Accuracy 2 of pickup setting When the TAP CAL control is ful...

Страница 16: ...Power Supply Power for the internal circuitry may be derived from a variety of ac or dc external power sources as indicated in Table 1 1 Table 1 1 Power Supply Specifications Input Voltage Type Nomin...

Страница 17: ...perature The operating temperature range is from 40 C 40 F to 70 C 158 F Storage Temperature The storage temperature range is from 65 C 85 F to 100 C 212 F Shock In standard tests the relay has withst...

Страница 18: ...1 8 BE1 51 General Information 9137200997 Rev D This page intentionally left blank Courtesy of NationalSwitchgear com...

Страница 19: ...OF CONTENTS SECTION 2 CONTROLS AND INDICATORS 2 1 INTRODUCTION 2 1 Figures Figure 2 1 Location of Controls and Indicators 2 1 Tables Table 2 1 Controls and Indicators 2 2 Table 2 2 Sensing Input Range...

Страница 20: ...ii BE1 51 Controls and Indicators 9137200997 Rev D This page intentionally left blank Courtesy of NationalSwitchgear com...

Страница 21: ...25 I 3 25 9 75 H 3 00 9 00 G 2 50 7 50 F 2 25 6 75 E 1 75 5 25 D 1 50 4 50 C 1 00 3 00 B LOW HIGH TAP A 0 75 2 25 I B I B TIMING T ENERGIZE OUTPUT 1 2 PUSH TO B ELEMENT A N TIME DIAL A OFF NEUTRAL INS...

Страница 22: ...el G POWER Indicator LED illuminates to indicate that the Relay Power Supply is functioning H Target Reset Switch Manually resets all targets both element and function type I FUNCTION Targets TIME INS...

Страница 23: ...t Any change of the tap selector or calibration CAL controls will cause a directly proportional change of the instantaneous overcurrent levels Table 2 2 Sensing Input Ranges TAP Selector Current Sensi...

Страница 24: ...Input Range 8 Three Phase and Neutral Phase or Neutral 0 45 0 60 0 90 1 05 1 35 1 50 1 80 1 95 2 25 2 40 8 9 13 14 15 16 17 18 Sensing Input Range 9 All Other Sensing Types HIGH 0 45 0 60 0 90 1 05 1...

Страница 25: ...Multiplexor 3 2 Analog To Digital Converter and Level Detector 3 2 Time Trip Comparator and Scaler 3 2 Microprocessor Not Shown 3 2 Instantaneous Overcurrent Options 1 1 and 1 2 3 3 Timed and Instant...

Страница 26: ...ii BE1 51 Functional Description 9137200997 Rev D This page intentionally left blank Courtesy of NationalSwitchgear com...

Страница 27: ...on for the phase or phase and neutral time and instantaneous overcurrent functions BLOCK DIAGRAM ANALYSIS The following block diagram analysis is referenced to Figure 3 1 A microprocessor not illustra...

Страница 28: ...Analog dc voltages representing the sensed currents from the multiplexor are converted to binary numbers successive approximation and applied to the time trip comparator and scaler circuits Time Trip...

Страница 29: ...tput and the auxiliary relays will remain energized for the duration of the overcurrent condition Push to Energize Pushbuttons If either option 2 C or 2 E is present each individual output relay can b...

Страница 30: ...TE Prior to August 2007 BE1 51 target indicators consisted of magnetically latched disc indicators These mechanically latched target indicators have been replaced by the electronically latched LED tar...

Страница 31: ...unting Double Ended Case 4 5 Figure 4 5 Panel Drilling Dimensions Projection Mounting Double Ended Case 4 6 Figure 4 6 Typical External Connections Current Operated Targets DC Powered 4 7 Figure 4 7 T...

Страница 32: ...ii BE1 51 Installation 9137200997 Rev D This page intentionally left blank Courtesy of NationalSwitchgear com...

Страница 33: ...nt operated target operation a minimum current of 200 milliamperes must flow through the output trip circuit If a wiring insulation test is required remove the connection plugs and withdraw the relay...

Страница 34: ...4 2 BE1 51 Installation 9137200997 Rev D D2853 22 06 15 99 Figure 4 1 Outline Dimensions Side View Semi Flush Mounted Double Ended Case Courtesy of NationalSwitchgear com...

Страница 35: ...9137200997 Rev D BE1 51 Installation 4 3 Figure 4 2 Outline Dimensions Side View Projection Mounted Double Ended Case Courtesy of NationalSwitchgear com...

Страница 36: ...4 4 BE1 51 Installation 9137200997 Rev D Figure 4 3 Outline Dimensions Front View Case Cover Courtesy of NationalSwitchgear com...

Страница 37: ...9137200997 Rev D BE1 51 Installation 4 5 Figure 4 4 Panel Cutting and Drilling Dimensions Semi Flush Mounting Double Ended Case Courtesy of NationalSwitchgear com...

Страница 38: ...4 6 BE1 51 Installation 9137200997 Rev D Figure 4 5 Panel Drilling Dimensions Projection Mounting Double Ended Case Courtesy of NationalSwitchgear com...

Страница 39: ...igures 4 10 though 4 13 To prevent an inductive overload of the relay contacts it is necessary to break the trip circuit externally through the 52a contacts Relay circuitry is connected to the case te...

Страница 40: ...nstallation 9137200997 Rev D Figure 4 7 Typical Sensing External Connections Sensing Input Type G or K Figure 4 8 Typical Sensing External Connections Sensing Input Type I or X Courtesy of NationalSwi...

Страница 41: ...9137200997 Rev D BE1 51 Installation 4 9 Figure 4 9 Typical Sensing External Connections Sensing Input Type H or V Courtesy of NationalSwitchgear com...

Страница 42: ...4 10 BE1 51 Installation 9137200997 Rev D Figure 4 10 Typical Internal Diagram Sensing Input Type K Courtesy of NationalSwitchgear com...

Страница 43: ...9137200997 Rev D BE1 51 Installation 4 11 Figure 4 11 Typical Internal Diagram Sensing Input Type I or X Courtesy of NationalSwitchgear com...

Страница 44: ...4 12 BE1 51 Installation 9137200997 Rev D Figure 4 12 Typical Internal Diagram Sensing Input Type G Courtesy of NationalSwitchgear com...

Страница 45: ...9137200997 Rev D BE1 51 Installation 4 13 Figure 4 13 Typical Internal Diagram Sensing Input Type H or V Courtesy of NationalSwitchgear com...

Страница 46: ...coordinate repairs STORAGE This protective relay contains aluminum electrolytic capacitors which generally have a life expectancy in excess of 10 years at storage temperatures less than 40 C 104 F Typ...

Страница 47: ...5 8 TAP and TAP NEUTRAL Selector Setting 5 8 Time Overcurrent Curve Selection Timing Type Z1 Z2 and Z3 Only 5 9 Time Delay Selection 5 10 Neutral Time Delay Selection 5 10 INST 1 Control Setting 5 10...

Страница 48: ...ii BE1 51 Tests and Adjustments 9137200997 Rev D This page intentionally left blank Courtesy of NationalSwitchgear com...

Страница 49: ...y testing Step 1 Connect the relay test setup in accordance with Figures 5 1 through 5 4 depending upon the sensing input type for your relay see Figure 1 1 Style Number Identification Chart a Sensing...

Страница 50: ...cover Step 3 Set the front panel TIME DIAL selector and if present the front panel TIME DIAL NEUTRAL selector to 99 Step 4 Adjust the front panel INST 1 and INST 2 controls if present fully clockwise...

Страница 51: ...minimum and maximum overcurrent pickup points of the time overcurrent element Step 1 Perform the preliminary instructions Step 2 Set the front panel TAP selector to A Step 3 Adjust the test set for a...

Страница 52: ...as shown in Figure 5 4 each time repeating Steps 1 through 10 For neutral testing continue with Step 12 c Sensing Input Type G Three Phase Sensing Remove the power and reconnect the input sensing to e...

Страница 53: ...s if NC after appropriate time delay Step 7 Remove input current Timed Output Test This test checks the accuracy of the time overcurrent characteristic delay Step 1 Verify that the preliminary instruc...

Страница 54: ...nt panel TIMING NEUTRAL indicator illuminates Step 18 When the time delay ends the timed output relay is energized RESULTS 1 The front panel TIMING NEUTRAL indicator extinguishes 2 The test setup time...

Страница 55: ...0 times the front panel TAP selector A setting Step 9 Adjust the test set to approximately 35 times the front panel TAP selector A setting Step 10 Slowly adjust the test set further toward an overcurr...

Страница 56: ...igure 5 4 Because the relay front panel TIMING indicator provides the needed pickup indication do not connect the test setup to the output terminals The front panel TAP selector is ganged and the adju...

Страница 57: ...ame for all the phases Step 9 Remove input current Step 10 Reconnect the test set output to the neutral sense terminals See Figures 5 3 or 5 4 Step 11 Adjust the current to the desired time overcurren...

Страница 58: ...ulting front panel NEUTRAL TIME DIAL setting can differ Step 2 Set the front panel NEUTRAL TIME DELAY as follows a On the appropriate curve plot upward from the multiples of pickup current value until...

Страница 59: ...oximating the desired neutral instantaneous 1 overcurrent pickup point for the relay Step 11 Apply current to the relay Step 12 Rapidly increase the overcurrent input to the relay until the instantane...

Страница 60: ...5 12 BE1 51 Tests and Adjustments 9137200997 Rev D This page intentionally left blank Courtesy of NationalSwitchgear com...

Страница 61: ...tended Timing Range A 14 Figure A 25 Timing Type C5 I2 t with Limit 5 A 15 Figure A 26 Timing Type C5 I2 t with Limit 5 and Extended Timing Range A 15 Figure A 27 Timing Type C6 I2 t with Limit 6 A 16...

Страница 62: ...with Integrated Algorithm and Extended Timing A 32 Figure A 60 Timing Type C4 I2 t Limit 4 with Integrated Algorithm A 33 Figure A 61 Timing Type C4 I2 t Limit 4 with Integrated Algorithm and Extende...

Страница 63: ...any given relay either the standard or the extended range version will apply never both Table A 1 lists timing choices with available curves Table A 2 lists the positions of the timing curve selector...

Страница 64: ...Inverse 6 6 A 11 A 12 A 48 A 49 B7 Extremely Inverse 7 7 A 13 A 14 A 50 A 51 B8 I2 t 0 0 A 15 A 16 A 52 A 53 C1 I2 t with Limit 1 8 A 17 A 18 A 54 A 55 C2 I2 t with Limit 2 9 A 19 A 20 A 56 A 57 C3 I2...

Страница 65: ...BE1 51 Time Overcurrent Characteristic Curves A 3 P0049 02 1 5 Figure A 1 Timing Type B1 Short Inverse P0049 03 1 5 Figure A 2 Timing Type B1 Short Inverse with Extended Timing Range Courtesy of Natio...

Страница 66: ...ime Overcurrent Characteristic Curves 9137200997 Rev D P0049 04 Figure A 3 Timing Type B2 Long Inverse P0049 05 Figure A 4 Timing Type B2 Long Inverse with Extended Timing Range Courtesy of NationalSw...

Страница 67: ...v D BE1 51 Time Overcurrent Characteristic Curves A 5 P0049 06 Figure A 5 Timing Type B3 Definite Time P0049 07 Figure A 6 Timing Type B3 Definite Time with Extended Timing Range Courtesy of NationalS...

Страница 68: ...ercurrent Characteristic Curves 9137200997 Rev D P0049 08 Figure A 7 Timing Type B4 Moderately Inverse P0049 09 Figure A 8 Timing Type B4 Moderately Inverse with Extended Timing Range Courtesy of Nati...

Страница 69: ...97 Rev D BE1 51 Time Overcurrent Characteristic Curves A 7 P0049 10 Figure A 9 Timing Type B5 Inverse P0049 11 Figure A 10 Timing Type B5 Inverse with Extended Timing Range Courtesy of NationalSwitchg...

Страница 70: ...me Overcurrent Characteristic Curves 9137200997 Rev D P0049 12 Figure A 11 Timing Type B6 Very Inverse P0049 13 Figure A 12 Timing Type B6 Very Inverse with Extended Timing Range Courtesy of NationalS...

Страница 71: ...E1 51 Time Overcurrent Characteristic Curves A 9 P0049 14 Figure A 13 Timing Type B7 Extremely Inverse P0049 15 Figure A 14 Timing Type B7 Extremely Inverse with Extended Timing Range Courtesy of Nati...

Страница 72: ...E1 51 Time Overcurrent Characteristic Curves 9137200997 Rev D P0049 16 Figure A 15 Timing Type B8 I2 t P0049 17 Figure A 16 Timing Type B8 I2 t with Extended Timing Range Courtesy of NationalSwitchgea...

Страница 73: ...E1 51 Time Overcurrent Characteristic Curves A 11 P0049 18 Figure A 17 Timing Type C1 I2 t with Limit 1 P0049 19 Figure A 18 Timing Type C1 I2 t with Limit 1 and Extended Timing Range Courtesy of Nati...

Страница 74: ...vercurrent Characteristic Curves 9137200997 Rev D P0049 20 Figure A 19 Timing Type C2 I2 t with Limit 2 P0049 21 Figure A 20 Timing Type C2 I2 t with Limit 2 and Extended Timing Range Courtesy of Nati...

Страница 75: ...E1 51 Time Overcurrent Characteristic Curves A 13 P0049 22 Figure A 21 Timing Type C3 I2 t with Limit 3 P0049 23 Figure A 22 Timing Type C3 I2 t with Limit 3 and Extended Timing Range Courtesy of Nati...

Страница 76: ...vercurrent Characteristic Curves 9137200997 Rev D P0049 24 Figure A 23 Timing Type C4 I2 t with Limit 4 P0049 25 Figure A 24 Timing Type C4 I2 t with Limit 4 and Extended Timing Range Courtesy of Nati...

Страница 77: ...E1 51 Time Overcurrent Characteristic Curves A 15 P0049 26 Figure A 25 Timing Type C5 I2 t with Limit 5 P0049 27 Figure A 26 Timing Type C5 I2 t with Limit 5 and Extended Timing Range Courtesy of Nati...

Страница 78: ...vercurrent Characteristic Curves 9137200997 Rev D P0049 28 Figure A 27 Timing Type C6 I2 t with Limit 6 P0049 29 Figure A 28 Timing Type C6 I2 t with Limit 6 and Extended Timing Range Courtesy of Nati...

Страница 79: ...E1 51 Time Overcurrent Characteristic Curves A 17 P0049 30 Figure A 29 Timing Type C7 I2 t with Limit 7 P0049 31 Figure A 30 Timing Type C7 I2 t with Limit 7 and Extended Timing Range Courtesy of Nati...

Страница 80: ...vercurrent Characteristic Curves 9137200997 Rev D P0049 32 Figure A 31 Timing Type C8 I2 t with Limit 8 P0049 33 Figure A 32 Timing Type C8 I2 t with Limit 8 and Extended Timing Range Courtesy of Nati...

Страница 81: ...7 Rev D BE1 51 Time Overcurrent Characteristic Curves A 19 P0049 34 Figure A 33 Timing Type E2 BS 142 Long Inverse P0049 35 Figure A 34 Timing Type E4 BS 142 Inverse 1 3 Sec Courtesy of NationalSwitch...

Страница 82: ...51 Time Overcurrent Characteristic Curves 9137200997 Rev D P0049 36 Figure A 35 Timing Type E5 BS 142 Inverse 2 9 Sec P0049 37 Figure A 36 Timing Type E6 BS 142 Very Inverse Courtesy of NationalSwitch...

Страница 83: ...9137200997 Rev D BE1 51 Time Overcurrent Characteristic Curves A 21 P0049 38 Figure A 37 Timing Type E7 BS 142 Extremely Inverse Courtesy of NationalSwitchgear com...

Страница 84: ...ristic Curves 9137200997 Rev D P0049 39 Figure A 38 Timing Type B1 Short Inverse with Integrated Algorithm P0049 40 Figure A 39 Timing Type B1 Short Inverse with Integrated Algorithm and Extended Timi...

Страница 85: ...rent Characteristic Curves A 23 P0049 41 Figure A 40 Timing Type B2 Long Inverse with Integrated Algorithm P0049 42 Figure A 41 Timing Type B2 Long Inverse with Integrated Algorithm and Extended Timin...

Страница 86: ...ristic Curves 9137200997 Rev D P0049 43 Figure A 42 Timing Type B3 Definite Time with Integrated Algorithm P0049 44 Figure A 43 Timing Type B3 Definite Time with Integrated Algorithm and Extended Timi...

Страница 87: ...haracteristic Curves A 25 P0049 45 Figure A 44 Timing Type B4 Moderately Inverse with Integrated Algorithm P0049 46 Figure A 45 Timing Type B4 Moderately Inverse with Integrated Algorithm and Extended...

Страница 88: ...aracteristic Curves 9137200997 Rev D P0049 47 Figure A 46 Timing Type B5 Inverse with Integrated Algorithm P0049 48 Figure A 47 Timing Type B5 Inverse with Integrated Algorithm and Extended Timing Cou...

Страница 89: ...rent Characteristic Curves A 27 P0049 49 Figure A 48 Timing Type B6 Very Inverse with Integrated Algorithm P0049 50 Figure A 49 Timing Type B6 Very Inverse with Integrated Algorithm and Extended Timin...

Страница 90: ...ic Curves 9137200997 Rev D P0049 51 Figure A 50 Timing Type B7 Extremely Inverse with Integrated Algorithm P0049 52 Figure A 51 Timing Type B7 Extremely Inverse with Integrated Algorithm and Extended...

Страница 91: ...Overcurrent Characteristic Curves A 29 P0049 53 Figure A 52 Timing Type B8 I2 t with Integrated Algorithm P0049 54 Figure A 53 Timing Type B8 I2 t with Integrated Algorithm and Extended Timing Courte...

Страница 92: ...nt Characteristic Curves 9137200997 Rev D P0049 55 Figure A 54 Timing Type C1 I2 t Limit 1 with Integrated Algorithm P0049 56 Figure A 55 Timing Type C1 I2 t Limit 1 with Integrated Algorithm Courtesy...

Страница 93: ...rent Characteristic Curves A 31 P0049 57 Figure A 56 Timing Type C2 I2 t Limit 2 with Integrated Algorithm P0049 58 Figure A 57 Timing Type C2 I2 t Limit 2 with Integrated Algorithm and Extended Timin...

Страница 94: ...eristic Curves 9137200997 Rev D P0049 59 Figure A 58 Timing Type C3 I2 t Limit 3 with Integrated Algorithm P0049 60 Figure A 59 Timing Type C3 I2 t Limit 3 with Integrated Algorithm and Extended Timin...

Страница 95: ...rent Characteristic Curves A 33 P0049 61 Figure A 60 Timing Type C4 I2 t Limit 4 with Integrated Algorithm P0049 62 Figure A 61 Timing Type C4 I2 t Limit 4 with Integrated Algorithm and Extended Timin...

Страница 96: ...eristic Curves 9137200997 Rev D P0049 63 Figure A 62 Timing Type C5 I2 t Limit 5 with Integrated Algorithm P0049 64 Figure A 63 Timing Type C5 I2 t Limit 5 with Integrated Algorithm and Extended Timin...

Страница 97: ...rent Characteristic Curves A 35 P0049 65 Figure A 64 Timing Type C6 I2 t Limit 6 with Integrated Algorithm P0049 66 Figure A 65 Timing Type C6 I2 t Limit 6 with Integrated Algorithm and Extended Timin...

Страница 98: ...eristic Curves 9137200997 Rev D P0049 67 Figure A 66 Timing Type C7 I2 t Limit 7 with Integrated Algorithm P0049 68 Figure A 67 Timing Type C7 I2 t Limit 7 with Integrated Algorithm and Extended Timin...

Страница 99: ...rent Characteristic Curves A 37 P0049 69 Figure A 68 Timing Type C8 I2 t Limit 8 with Integrated Algorithm P0049 70 Figure A 69 Timing Type C8 I2 t Limit 8 with Integrated Algorithm and Extended Timin...

Страница 100: ...A 38 BE1 51 Time Overcurrent Characteristic Curves 9137200997 Rev D This page intentionally left blank Courtesy of NationalSwitchgear com...

Страница 101: ...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 Courtesy of NationalSwitchgear com...

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