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BE1-51/27R - Functional Description

3-5

held open by the installed connection plug. When the relay is removed from service by removing the
connection plug, the shorting bars are closed.

Target Indicator Circuits

When specified, a front panel target indicator for each type of monitoring (i.e., time overcurrent or instan-
taneous) will be supplied. Two types of target drive circuits are available:

Internally Operated Targets

Outputs from the overcurrent elements are directly applied to drive the appropriate target indicator. Each
indicator is tripped regardless of the current level of the trip circuit.

Current Operated Targets

This target will operate only when a minimum of 0.2 A flows in the output circuit. A special reed relay in
series with the output contact provides the signal to the target indicator.

Note that the front panel function targets (TIMED, INST 1, etc.) may be of either type. Phase and neutral
indicators are current operated only if the instantaneous options are not included and if current operated
targets are specified.

Each target, when operated, is magnetically latched and must be reset manually. Target configurations for
the various models are provided in Section 2.

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Содержание BE1-51/27R

Страница 1: ...INSTRUCTION MANUAL FOR TIME OVERCURRENT RELAY WITH VOLTAGE RESTRAINT MODEL BE1 51 27R Publication 9 1372 00 999 Revision B 09 99...

Страница 2: ...rocedures presented in this manual INTRODUCTION This Instruction Manual provides information concerning the operation and installation of BE1 51 27R Time Overcurrent with voltage restraint Relays To a...

Страница 3: ...ctric Co Highland IL 62249 September 1999 It is not the intention of this manual to cover all details and variations in equipment nor does this manual provide data for every possible contingency regar...

Страница 4: ...ions 1 8 Style Number Identification Chart 1 9 Time Overcurrent Characteristic Curves 1 12 SECTION 2 HUMAN MACHINE INTERFACE Controls And Indicators 2 1 SECTION 3 FUNCTIONAL DESCRIPTION 3 1 General 3...

Страница 5: ...ement Backup Settings 4 20 SECTION 5 TESTS AND ADJUSTMENTS 5 1 General 5 1 Required Test Equipment 5 1 Operational Test 5 1 Preliminary Instructions 5 1 Time Overcurrent Pickup Test 5 5 Timed Output T...

Страница 6: ...uipped with differential protection Phase overcurrent units should be supplied on all three phases Either three single phase relays or one three phase relay when the objective is to protect for phase...

Страница 7: ...e same as the setting At voltages below 25 percent of nominal the pickup will be 25 percent of the setting Note that the BE1 51 27R is designed to trip at currents less than the setting if the voltage...

Страница 8: ...0 377 0 506 0 649 0 831 1 50 6 00 0 159 0 220 0 285 0 347 0 474 0 599 0 790 1 75 7 00 0 151 0 204 0 263 0 320 0 435 0 553 0 727 2 00 8 00 0 142 0 191 0 246 0 300 0 412 0 520 0 683 2 25 9 00 0 136 0 1...

Страница 9: ...2 741 3 610 4 443 4 50 18 00 0 958 1 392 1 818 2 243 2 667 3 514 4 328 5 00 20 00 0 944 1 372 1 786 2 200 2 619 3 454 4 252 STANDARD FEATURES Time Overcurrent Time overcurrent elements pick up over a...

Страница 10: ...n integrating inverse time with extended timing range Nine integrating I2 T with extended timing range Characteristic curves are shown by the graphs in Figures 1 2 through 1 70 Note that each graph i...

Страница 11: ...pon option 2 selection Sensing Input Type When single phase two phase and neutral three phase or three phase and neutral sensing has been specified the front panel TAP selector and the front panel TAP...

Страница 12: ...ernally operated Outputs Optional normally opened normally closed or SPDT auxiliary output contacts may be selected Contacts actuate when the timed output relay is energized Internally operated front...

Страница 13: ...or phase 0 5 to 4 0 A for neutral E N O outputs Z1 Sixteen position switch selects B and C curves B1 B8 and C1 C8 time overcurrent characteristic curves P Operating power derived from 125 Vdc or 100 1...

Страница 14: ...BE1 51 27R General Information 1 9 Figure 1 1 Style Number Identification Chart...

Страница 15: ...Tap value VN Nominal voltage V Applied voltage level Time Overcurrent Dropout Better than 92 of pickup level Ratio Instantaneous Overcurrent Continuously adjustable over the range of 1 to 40 times th...

Страница 16: ...seconds carry 7 A continuously and break 0 3 A 500 Vdc Make and carry 15 A for 0 2 seconds carry 7 A continuously and break 0 1 A Inductive 120 240 Vac Make and carry 30 A for 0 2 seconds carry 7 A co...

Страница 17: ...time overcurrent functions individually as options or selected by switch if the Z1 Z2 or Z3 timing option is specified Z1 option can select any of the timing types designated as B1 through B8 and C1 t...

Страница 18: ...BE1 51 27R General Information 1 13 Figure 1 2 Timing Type B1 Short Inverse Drawing No 99 0932 Figure 1 3 Timing Type B1 Short Inverse With Extended Timing Range Drawing No 99 0944...

Страница 19: ...1 14 BE1 51 27R General Information Figure 1 4 Timing Type B2 Long Inverse Drawing No 99 0931 Figure 1 5 Timing Type B2 Long Inverse With Extended Timing Range Drawing No 99 0946...

Страница 20: ...BE1 51 27R General Information 1 15 Figure 1 6 Timing Type B3 Definite Time Drawing No 99 0933 Figure 1 7 Timing Type B3 Definite Time With Extended Timing Range Drawing No 99 0942...

Страница 21: ...1 16 BE1 51 27R General Information Figure 1 8 Timing Type B4 Moderately Inverse Drawing No 99 0930 Figure 1 9 Timing Type B4 Moderately Inverse With Extended Timing Range Drawing No 99 0945...

Страница 22: ...BE1 51 27R General Information 1 17 Figure 1 10 Timing Type B5 Inverse Drawing No 99 0929 Figure 1 11 Timing Type B5 Inverse With Extended Timing Range Drawing No 99 0943...

Страница 23: ...1 18 BE1 51 27R General Information Figure 1 12 Timing Type B6 Very Inverse Drawing No 99 0928 Figure 1 13 Timing Type B6 Very Inverse With Extended Timing Range Drawing No 99 0941...

Страница 24: ...BE1 51 27R General Information 1 19 Figure 1 14 Timing Type B7 Extremely Inverse Drawing No 99 0927 Figure 1 15 Timing Type B7 Extremely Inverse With Extended Timing Range Drawing No 99 0940...

Страница 25: ...1 20 BE1 51 27R General Information Figure 1 16 Timing Type B8 I2 T Drawing No 99 0926 Figure 1 17 Timing Type B8 I2 T With Extended Timing Range Drawing No 99 0947...

Страница 26: ...BE1 51 27R General Information 1 21 Figure 1 18 Timing Type C1 I2 T With Limit 1 Drawing No 99 0956 Figure 1 19 Timing Type C1 I2 T With Limit 1 and Extended Timing Range Drawing No 99 0948...

Страница 27: ...1 22 BE1 51 27R General Information Figure 1 20 Timing Type C2 I2 T With Limit 2 Drawing No 99 0957 Figure 1 21 Timing Type C2 I2 T With Limit 2 and Extended Timing Range Drawing No 99 0949...

Страница 28: ...BE1 51 27R General Information 1 23 Figure 1 22 Timing Type C3 I2 T With Limit 3 Drawing No 99 0958 Figure 1 23 Timing Type C3 I2 T With Limit 3 and Extended Timing Range Drawing No 99 0950...

Страница 29: ...1 24 BE1 51 27R General Information Figure 1 24 Timing Type C4 I2 T With Limit 4 Drawing No 99 0959 Figure 1 25 Timing Type C4 I2 T With Limit 4 and Extended Timing Range Drawing No 99 0951...

Страница 30: ...BE1 51 27R General Information 1 25 Figure 1 26 Timing Type C5 I2 T With Limit 5 Drawing No 99 0960 Figure 1 27 Timing Type C5 I2 T With Limit 5 and Extended Timing Range Drawing No 99 0952...

Страница 31: ...1 26 BE1 51 27R General Information Figure 1 28 Timing Type C6 I2 T With Limit 6 Drawing No 99 0961 Figure 1 29 Timing Type C6E I2 T With Limit 6 and Extended Timing Range Drawing No 99 0953...

Страница 32: ...BE1 51 27R General Information 1 27 Figure 1 30 Timing Type C7 I2 T With Limit 7 Drawing No 99 0962 Figure 1 31 Timing Type C7E I2 T With Limit 7 and Extended Timing Range Drawing No 99 0954...

Страница 33: ...1 28 BE1 51 27R General Information Figure 1 32 Timing Type C8 I2 T With Limit 8 Drawing No 99 0963 Figure 1 33 Timing Type C8E I2 T With Limit 8 and Extended Timing Range Drawing No 99 0955...

Страница 34: ...BE1 51 27R General Information 1 29 Figure 1 34 Timing Type E2 BS 142 Long Inverse Drawing No 99 1093 Figure 1 35 Timing Type E4 BS 142 Inverse 1 3 Sec Drawing No 99 1094...

Страница 35: ...1 30 BE1 51 27R General Information Figure 1 36 Timing Type E5 BS 142 Inverse 2 9 Sec Drawing No 99 1095 Figure 1 37 Timing Type E6 BS 142 Very Inverse Drawing No 99 1096...

Страница 36: ...BE1 51 27R General Information 1 31 Figure 1 38 Timing Type E7 BS 142 Extremely Inverse Drawing No 99 1097...

Страница 37: ...R General Information Figure 1 39 Timing Type B1 Short Inverse With Integrated Algorithm Drawing No 99 1397 Figure 1 40 Timing Type B1 Short Inverse With Integrated Algorithm and Extended Timing Drawi...

Страница 38: ...neral Information 1 33 Figure 1 41 Timing Type B2 Long Inverse With Integrated Algorithm Drawing No 99 1399 Figure 1 42 Timing Type B2 Long Inverse With Integrated Algorithm and Extended Timing Drawin...

Страница 39: ...R General Information Figure 1 43 Timing Type B3 Definite Time With Integrated Algorithm Drawing No 99 1401 Figure 1 44 Timing Type B3 Definite Time With Integrated Algorithm and Extended Timing Drawi...

Страница 40: ...Information 1 35 Figure 1 45 Timing Type B4 Moderately Inverse With Integrated Algorithm Drawing No 99 1403 Figure 1 46 Timing Type B4 Moderately Inverse With Integrated Algorithm and Extended Timing...

Страница 41: ...51 27R General Information Figure 1 47 Timing Type B5 Inverse With Integrated Algorithm Drawing No 99 1405 Figure 1 48 Timing Type B5 Inverse With Integrated Algorithm and Extended Timing Drawing No...

Страница 42: ...neral Information 1 37 Figure 1 49 Timing Type B6 Very Inverse With Integrated Algorithm Drawing No 99 1407 Figure 1 50 Timing Type B6 Very Inverse With Integrated Algorithm and Extended Timing Drawin...

Страница 43: ...neral Information Figure 1 51 Timing Type B7 Extremely Inverse With Integrated Algorithm Drawing No 99 1409 Figure 1 52 Timing Type B7E Extremely Inverse With Integrated Algorithm and Extended Timing...

Страница 44: ...1 27R General Information 1 39 Figure 1 53 Timing Type B8 I2 T With Integrated Algorithm Drawing No 99 1411 Figure 1 54 Timing Type B8E I2 T With Integrated Algorithm and Extended Timing Drawing No 99...

Страница 45: ...7R General Information Figure 1 55 Timing Type C1 I2 T Limit 1 With Integrated Algorithm Drawing No 99 1413 Figure 1 56 Timing Type C1E I2 T Limit 1 With Integrated Algorithm and Extended Timing Drawi...

Страница 46: ...neral Information 1 41 Figure 1 57 Timing Type C2 I2 T Limit 2 With Integrated Algorithm Drawing No 99 1415 Figure 1 58 Timing Type C2E I2 T Limit 2 With Integrated Algorithm and Extended Timing Drawi...

Страница 47: ...7R General Information Figure 1 59 Timing Type C3 I2 T Limit 3 With Integrated Algorithm Drawing No 99 1417 Figure 1 60 Timing Type C3E I2 T Limit 3 With Integrated Algorithm and Extended Timing Drawi...

Страница 48: ...neral Information 1 43 Figure 1 61 Timing Type C4 I2 T Limit 4 With Integrated Algorithm Drawing No 99 1419 Figure 1 62 Timing Type C4E I2 T Limit 4 With Integrated Algorithm and Extended Timing Drawi...

Страница 49: ...7R General Information Figure 1 63 Timing Type C5 I2 T Limit 5 With Integrated Algorithm Drawing No 99 1421 Figure 1 64 Timing Type C5E I2 T Limit 5 With Integrated Algorithm and Extended Timing Drawi...

Страница 50: ...neral Information 1 45 Figure 1 65 Timing Type C6 I2 T Limit 6 With Integrated Algorithm Drawing No 99 1423 Figure 1 66 Timing Type C6E I2 T Limit 6 With Integrated Algorithm and Extended Timing Drawi...

Страница 51: ...7R General Information Figure 1 67 Timing Type C7 I2 T Limit 7 With Integrated Algorithm Drawing No 99 1425 Figure 1 68 Timing Type C7E I2 T Limit 7 With Integrated Algorithm and Extended Timing Drawi...

Страница 52: ...neral Information 1 47 Figure 1 69 Timing Type C8 I2 T Limit 8 With Integrated Algorithm Drawing No 99 1427 Figure 1 70 Timing Type C8E I2 T Limit 8 With Integrated Algorithm and Extended Timing Drawi...

Страница 53: ...es the terminal connections high or low used to select the current sensing input range Refer to Table 2 2 for sensing input ranges D TIME DIAL NEUTRAL If present Determines the time delay between sens...

Страница 54: ...2 2 BE1 51 27R Human Machine Interface Controls And Indicators Figure 2 1 Location of Controls and Indicators...

Страница 55: ...INST 1 trip setting over the range of 1 to 40 times the selected phase time overcurrent pickup TAP value P INST 1 NEUTRAL Control Options 1 1 and 1 2 Only A four turn potentiometer provides adjustmen...

Страница 56: ...0 0 8 9 13 14 15 16 Neutral 0 75 1 00 1 50 1 75 2 25 2 50 3 00 3 25 3 75 4 00 17 18 Range 4 Three Phase and Neutral Phase 0 75 1 00 1 50 1 75 2 25 2 50 3 00 3 25 3 75 4 00 8 9 13 14 15 16 Neutral 2 2...

Страница 57: ...with Limit 2 9 1 20 1 21 1 57 1 58 C3 I2 T with Limit 3 A 1 22 1 23 1 59 1 60 C4 I2 T with Limit 4 B 1 24 1 25 1 61 1 62 C5 I2 T with Limit 5 C 1 26 1 27 1 63 1 64 C6 I2 T with Limit 6 D 1 28 1 29 1 6...

Страница 58: ...power supplies A benefit of this new design increases the power supply operating ranges such that the 48 125 volt selector is no longer necessary Specific voltage ranges for the three new power suppli...

Страница 59: ...3 2 BE1 51 27R Functional Description Figure 3 1 Functional Block Diagram...

Страница 60: ...the required time delay before the timed output relay will be energized Time delay characteristics are shown in the curves located in Section 1 If extended timing range options 2 D or 2 E is present...

Страница 61: ...aneous overcurrent element will always be from 1 to 40 times above the front panel TAP and TAP NEUTRAL settings of the time overcurrent element If target type A or B is present the front panel INST 1...

Страница 62: ...propriate target indicator Each indicator is tripped regardless of the current level of the trip circuit Current Operated Targets This target will operate only when a minimum of 0 2 A flows in the out...

Страница 63: ...relay is disconnected from the operating circuit and will not provide system protection Always be sure that external operating monitored conditions are stable before removing a relay for inspection t...

Страница 64: ...m each relay 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 terminals by...

Страница 65: ...BE1 51 27R Installation 4 3 Figure 4 2 Typical Sensing External Connections Sensing Input Type M or N Figure 4 3 Typical Sensing External Connections Sensing Input Type R or S...

Страница 66: ...4 4 BE1 51 27R Installation Figure 4 4 Typical Sensing External Connections Sensing Input Type U or W Figure 4 5 Typical Sensing External Connections Sensing Input Type B or C...

Страница 67: ...BE1 51 27R Installation 4 5 Figure 4 6 Typical Sensing External Connections Sensing Input Type E or F Figure 4 7 Typical Sensing External Connections Sensing Input Type Y or Z...

Страница 68: ...ses the power supply operating ranges such that the 48 125 volt selector is no longer necessary Specific voltage ranges for the three new power supplies and a cross reference to the style number ident...

Страница 69: ...BE1 51 27R Installation 4 7 Figure 4 8 Typical Internal Diagram Sensing Input Type M or N...

Страница 70: ...4 8 BE1 51 27R Installation Figure 4 9 Typical Internal Diagram Sensing Input Type Y or Z With Power Supply Status...

Страница 71: ...BE1 51 27R Installation 4 9 Figure 4 10 Typical Internal Diagram Sensing Input Type B or C With Power Supply Status...

Страница 72: ...4 10 BE1 51 27R Installation Figure 4 11 Typical Internal Diagram Sensing Input Type R or S With Power Supply Status...

Страница 73: ...BE1 51 27R Installation 4 11 Figure 4 12 Typical Internal Diagram Sensing Input Type E or F With Power Supply Status...

Страница 74: ...4 12 BE1 51 27R Installation Figure 4 13 Typical Internal Diagram Sensing Input Type U or W With Power Supply Status...

Страница 75: ...for a solidly grounded system Lower settings are appropriate and safe for impedance grounded systems or for ungrounded protected equipment connections When choosing the time delay setting in a genera...

Страница 76: ...4 14 BE1 51 27R Installation Figure 4 14 Relay Signals and Current Pickup Example For 3 Phase Fault XE 0 65 X D...

Страница 77: ...ay Signals and Current Pickup Example For 3 Phase Fault XE 2 X D Setting Example Figure 4 16 illustrates generator relay elements that are to be set in this example Plant 11 kV feeders are supplied by...

Страница 78: ...51 27R elements must coordinate The currents are the changes resulting from the fault assuming a driving point voltage of 11 kV Actual currents will be the sum of the table values plus the pre fault l...

Страница 79: ...6 960 7 6 Relay 51 time at 7 6 multiples from B6 curves 08 time dial 0 31 seconds Set 51 27 relay pickup 1 75 3700 11 1 73 340 A Primary 340 300 5 5 7 A Secondary Set 51 27 relay time to provide 0 3 s...

Страница 80: ...current and any pre fault load current will add to the fault current values For a phase to phase fault the decay will be less Steady state level calculation 67 multiples at steady state level with T2...

Страница 81: ...aker R fails to interrupt the fault Redundant line relaying will minimize the need for generator tripping Use of a breaker failure timer set at 0 25 seconds would avoid generator tripping for failure...

Страница 82: ...milar CT saturation during an external three phase fault In a like manner the time setting of the time overcurrent element must ride through this transient resulting from CT saturation Ground current...

Страница 83: ...BE1 51 27R Installation 4 21 Figure 4 18 Panel Drilling Diagram Semi Flush Mounting Figure 4 19 Outline Dimensions Semi Flush Mounting...

Страница 84: ...vsd 09 02 99 DETAIL A A SHOWING THE ADDITION OF WASHERS OVER THE BOSS TO TIGHTEN THE RELAY AGAINST THE PANEL CASE PANEL Figure 4 20 Panel Drilling Diagram Projection Mounting Rear View Figure 4 21 Ou...

Страница 85: ...stment is listed below Refer to Figures 5 1 through 5 6 for test setups a Appropriate ac or dc power source for relay operation b Appropriate ac source 50 or 60 Hz as appropriate for voltage and curre...

Страница 86: ...with Neutral Sensing Refer to Figure 5 5 Ensure that the timed output terminals 1 and 10 are connected Also verify that either A B or current sense terminals are connected initially N terminals will b...

Страница 87: ...BE1 51 27R Tests And Adjustments 5 3 Figure 5 2 Test Setup for Sensing Input Type R or S Three Phase Sensing Figure 5 3 Test Setup for Sensing Input Type U or W Three Phase with Neutral Sensing...

Страница 88: ...BE1 51 27R Tests And Adjustments Figure 5 4 Test Setup for Sensing Input Type B or C Three Phase Delta Configuration Figure 5 5 Test Setup for Sensing Input Type E or F Three Phase with Neutral Sensi...

Страница 89: ...el TAP selector to A Step 3 Adjust the test set for an overcurrent threshold having one of the following values a 0 5 A for relays with Sensing Input Range 1 2 or 4 b 1 5 A for relays with Sensing Inp...

Страница 90: ...b Sensing Input Type Y or Z Two Phase and Neutral Sensing Remove the power and reconnect the input sensing to the remaining phases as shown in Figure 5 6 each time repeating Steps 1 through 10 For neu...

Страница 91: ...the overcurrent threshold toward the value of the front panel TAP NEUTRAL selector J setting until the front panel TIMING NEUTRAL indicator just illumi nates Do not disturb this setting Step 21 Recor...

Страница 92: ...y value in seconds should be within 5 of the timer reading from step 7 2 Step 10 Adjust the front panel TIME DIAL to 40 60 and 99 each time repeating Steps 6 through 9 Step 11 Remove the power and rec...

Страница 93: ...us Overcurrent Pickup Test This test checks the minimum overcurrent pickup points for Instantaneous 1 and if present Instantaneous 2 outputs Step 1 Perform the preliminary instructions Step 2 Reconnec...

Страница 94: ...sensing connect the relay as shown in Figures 5 3 and 5 5 then repeat Steps 2 through 11 substituting the following a The front panel TAP NEUTRAL selector instead of the front panel TAP selector Step...

Страница 95: ...fol lows a Sensing Input Type M or N Refer to Figure 5 1 Because the relay front panel TIMING indicator provides the needed pickup indication do not connect the test setup to the output terminals The...

Страница 96: ...TAP CAL control fully CW Step 7 Apply current to the relay Step 8 Slowly adjust the front panel TAP CAL control CCW until the front panel TIMING indicator just illuminates which indicates the desired...

Страница 97: ...opriate curve plot upward from the multiples of pickup current value until the horizontal line opposite the desired time delay time in seconds is reached The setting curve nearest the plot point shoul...

Страница 98: ...panel NEUTRAL TIME DIAL c For a lesser overcurrent difference from the pickup point the time delay will be greater so that for a multiple of 3 times the pickup current the time delay for the previous...

Страница 99: ...meter Step 13 Remove the input current Step 14 Reset the INST TARGET if present Step 15 If the overcurrent threshold reading from Step 13 was too high or low adjust the front panel INST 1 NEUTRAL cont...

Страница 100: ...s required 1 Relay model and style number 2 Relay serial number 3 Board or assembly a Part number b Serial number c Revision letter 4 The name of the board or assembly STORAGE This protective relay co...

Страница 101: ...ase terminals the test plug is inserted with the numbers 1 through 10 facing up Similarly when using the test plug in the upper part of the relay the numbers 11 through 20 are faceup It is impossible...

Страница 102: ...of the B and C curves in Section 1 Changed Specifications Time Overcurrent Pickup Accuracy Time Overcurrent Dropout Ratio and Isolation Added formula for pickup current and Chart 1 1 Instantaneous Re...

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