84-40
9424200996
Settings Calculation Examples
BE1-11
m
Figure 84-50. User Programmable Alarms Screen
Navigate to Alarm Configuration, Alarms, and enable Programmable Alarm 1 as a non-latching minor
alarm as shown in Figure 84-51. This alarm will show in the sequence of events and alarm reporting as
“Unbalance Alarm”.
Figure 84-50 and Figure 84-51 also show the Differential Alarm programmed at the end of the Current
Differential (87) subsection.
Figure 84-51. Alarm Settings Screen
50-5 - Overload Protection
The 50-5 element is used for overload protection while the motor is running. This protection is configured
according to the service factor of the motor. The pickup setting should be 115-125 percent of the service
factor per IEEE C37.96-2000,
IEEE Guide for AC Motor Protection
. If the service factor is 1.0, then
overload pickup should be 115% of FLA. The pickup setting should be 130 percent of FLA for a service
factor of 1.15. (If the service factor is unknown, use 1.0.)
In this example, the service factor is 1.15 and the pickup setting is calculated using Equation 84-32.
𝑃𝑃𝑅𝑅𝑠𝑠𝑘𝑘𝐹𝐹𝐴𝐴
=
𝐹𝐹𝐿𝐿𝐴𝐴 ∙
1
𝐶𝐶𝐶𝐶𝑅𝑅
∙
1.30 = 205
𝐴𝐴 ∙
1
60
∙
1.30 = 4.44
𝐴𝐴
𝐴𝐴𝑠𝑠𝑠𝑠𝐿𝐿𝑠𝑠𝐿𝐿𝐿𝐿𝑠𝑠𝑠𝑠
Equation 84-32. 50-5 Pickup
A delay prevents the BE1-11
m
from operating for temporary overloads while the motor is running.
Typically, the delay is set short, but can be set longer if the process is significant or if an operator is
regulating the load. The NEMA MG-1 standard states that a large motor can withstand an occasional
overload of 1.5
•
FLA for 30 seconds. A conservative time delay (using a factor of 1) is calculated in
Equation 84-34. The hot safe stall time is found in the motor manufacturer data.
𝐶𝐶𝑅𝑅𝐴𝐴𝑠𝑠
𝑅𝑅𝑠𝑠𝐹𝐹𝐿𝐿𝑠𝑠
= 1
∙ 𝐻𝐻𝐿𝐿𝑅𝑅
𝑆𝑆𝐿𝐿𝑆𝑆𝑠𝑠
𝑆𝑆𝑅𝑅𝐿𝐿𝐹𝐹𝐹𝐹
𝐶𝐶𝑅𝑅𝐴𝐴𝑠𝑠
(8.5
𝐴𝐴
) = 8.5
𝐴𝐴𝑠𝑠𝑠𝑠𝐿𝐿𝑠𝑠𝐿𝐿𝐴𝐴
Equation 84-33. 50-5 Time Delay
Select three-phase mode, set the Pickup setting to 4.44 Secondary A, and set the Time Delay to 8.5
seconds as shown in Figure 84-18.
Summary of Contents for BE1-11m
Page 8: ...vi 9424200996 Revision History BE1 11m...
Page 12: ...x 9424200996 Contents BE1 11m...
Page 21: ...9424200996 1 9 BE1 11m Introduction Figure 1 1 Style Chart...
Page 22: ...1 10 9424200996 Introduction BE1 11m...
Page 40: ...3 6 9424200996 Controls and Indicators BE1 11m Figure 3 3 Front Panel Display Setup Screen...
Page 54: ...5 6 9424200996 Phase Undervoltage 27P Protection BE1 11m...
Page 56: ...6 2 9424200996 Negative Sequence Voltage 47 Protection BE1 11m...
Page 61: ...9424200996 7 5 BE1 11m Phase Overvoltage 59P Protection Figure 7 3 Overvoltage Settings Screen...
Page 62: ...7 6 9424200996 Phase Overvoltage 59P Protection BE1 11m...
Page 68: ...8 6 9424200996 Auxiliary Overvoltage 59X Protection BE1 11m...
Page 80: ...12 4 9424200996 Instantaneous Overcurrent 50 Protection BE1 11m...
Page 84: ...13 4 9424200996 Breaker Failure 50BF Protection BE1 11m...
Page 92: ...14 8 9424200996 Inverse Overcurrent 51 Protection BE1 11m...
Page 105: ...9424200996 18 3 BE1 11m Power Factor 55 Protection Figure 18 2 Power Factor Settings Screen...
Page 106: ...18 4 9424200996 Power Factor 55 Protection BE1 11m...
Page 110: ...19 4 9424200996 Resistance Temperature Detector 49RTD Protection BE1 11m...
Page 118: ...20 8 9424200996 Thermal Curve 49TC Protection BE1 11m...
Page 122: ...22 2 9424200996 Starts per Time Interval 66 Protection BE1 11m...
Page 124: ...23 2 9424200996 Restart Inhibit Protection BE1 11m...
Page 140: ...28 4 9424200996 Breaker Control Switch 101 BE1 11m...
Page 148: ...29 8 9424200996 Setting Groups BE1 11m...
Page 156: ...30 8 9424200996 Metering BE1 11m Figure 30 11 RTD Meter Screen...
Page 158: ...31 2 9424200996 Digital Points BE1 11m Figure 31 2 Digital Points Monitor Screen...
Page 177: ...9424200996 34 5 BE1 11m Motor Reporting Figure 34 9 Learned Motor Data Screen...
Page 178: ...34 6 9424200996 Motor Reporting BE1 11m...
Page 184: ...35 6 9424200996 Alarms BE1 11m...
Page 186: ...36 2 9424200996 Differential Reporting BE1 11m...
Page 196: ...38 4 9424200996 Demands BE1 11m...
Page 198: ...39 2 9424200996 Load Profile BE1 11m...
Page 208: ...41 6 9424200996 Trip Circuit Monitor 52TCM BE1 11m...
Page 212: ...42 4 9424200996 Fuse Loss 60FL BE1 11m...
Page 218: ...43 6 9424200996 BESTnet Plus BE1 11m Figure 43 8 Power Quality Page...
Page 221: ...9424200996 44 3 BE1 11m Mounting Figure 44 3 Case Side Dimensions...
Page 235: ...9424200996 45 5 BE1 11m Terminals and Connectors Figure 45 7 Example of Reversed CT Polarity...
Page 236: ...45 6 9424200996 Terminals and Connectors BE1 11m...
Page 269: ...9424200996 48 15 BE1 11m BESTlogic Plus Figure 48 4 Logic Page 1 for Default Logic...
Page 288: ...49 10 9424200996 Communication BE1 11m Figure 49 14 Modbus Mapping Screen...
Page 306: ...52 4 9424200996 Device Information BE1 11m...
Page 314: ...53 8 9424200996 Configuration BE1 11m Figure 53 3 Display Units Screen...
Page 318: ...54 4 9424200996 Introduction to Testing BE1 11m...
Page 330: ...56 6 9424200996 Commissioning Testing BE1 11m...
Page 336: ...58 4 9424200996 Phase Undervoltage 27P Test BE1 11m...
Page 340: ...59 4 9424200996 Phase Overvoltage 59P Test BE1 11m...
Page 352: ...60 12 9424200996 Auxiliary Overvoltage 59X Test BE1 11m...
Page 360: ...61 8 9424200996 Frequency 81 Test BE1 11m...
Page 364: ...62 4 9424200996 Instantaneous Undercurrent 37 Test BE1 11m...
Page 376: ...63 12 9424200996 Instantaneous Overcurrent 50 Test BE1 11m...
Page 396: ...65 16 9424200996 Inverse Overcurrent 51 Test BE1 11m...
Page 408: ...67 6 9424200996 Power 32 Test BE1 11m...
Page 412: ...68 4 9424200996 Loss of Excitation Reverse Var Based 40Q Test BE1 11m...
Page 426: ...70 10 9424200996 Thermal Curve 49TC Test BE1 11m...
Page 432: ...72 4 9424200996 Starts per Time Interval 66 Test BE1 11m...
Page 436: ...73 4 9424200996 Restart Inhibit Test BE1 11m...
Page 440: ...74 4 9424200996 Virtual Control Switches 43 Test BE1 11m...
Page 450: ...75 10 9424200996 Logic Timers 62 Test BE1 11m...
Page 464: ...79 8 9424200996 Troubleshooting BE1 11m...
Page 480: ...80 16 9424200996 Specifications BE1 11m...
Page 600: ...84 56 9424200996 Settings Calculation Examples BE1 11m Figure 84 70 Logic Page 4 Part 1...
Page 602: ...84 58 9424200996 Settings Calculation Examples BE1 11m...
Page 608: ...85 6 9424200996 BESTCOMSPlus Settings Loader Tool BE1 11m...
Page 609: ......