P50 Agile P15D
6 Protection Functions
P15D/EN TM/B
6-7
K:
Thermal overload equal to (Ieq. / k* IFLA)
Where:
Ieq:
Equivalent current corresponding to the largest phase current
IFLA:
Full load current rating (settable)
k :
Settable (1 to 1.5 step 0.01)
A:
Initial thermal state. If the initial thermal state is 30% then A =0.3
Th. Trip:
Trip thermal state. If the trip thermal state is set at 100%, then Th. Trip is 1
The calculation of the thermal state is given by the following formula:
È
i+1 = (Ieq /k*IFLA) ² · [1 – exp (-t/Te)] +
È
i · exp (-t/Te)
TRIPPING CURVE FUNCTION OF THE PREFAULT LOAD (K = 1.1 & Te = 10 Mins)
TIME IN SEC
10000.00
1000.00
100.00
10.00
1.00
0.10
1
10
MULTIPLES OF THERMAL THRESHOLD SETTINGS I
θ>
A: No. of prefault load, thermal state = 0%
B: Thermal state = 30%
C: Thermal state = 50%
D: Thermal state = 70%
E: Thermal state = 90%
P5005ENa
Figure 1: Thermal Overload curve
Содержание MiCOM P50 Agile P15D
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Страница 3: ...P50 Agile P15D 1 Introduction P15D EN TM B 1 1 INTRODUCTION CHAPTER 1...
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Страница 9: ...SAFETY INFORMATION CHAPTER 2...
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Страница 29: ...P50 Agile P15D 4 Front Panel P15D EN TM B 4 1 FRONT PANEL CHAPTER 4...
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Страница 37: ...P50 Agile P15D 5 Configuration P15D EN TM B 5 1 CONFIGURATION CHAPTER 5...
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Страница 155: ...P50 Agile P15D 8 Monitoring Control P15D EN TM B 8 1 MONITORING CONTROL CHAPTER 8...
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Страница 163: ...P50 Agile P15D 9 External Battery Backup P15D EN TM B 9 1 EXTERNAL BATTERY BACKUP CHAPTER 9...
Страница 164: ...9 External Battery Backup P50 Agile P15D 9 2 P15D EN TM B...
Страница 167: ...P50 Agile P15D 10 Impulse Output for Tripping Coil P15D EN TM B 10 1 IMPULSE OUTPUT FOR TRIPPING COIL CHAPTER 10...
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Страница 171: ...P50 Agile P15D 11 Impulse for Flag Indicator P15D EN TM B 11 1 IMPULSE FOR FLAG INDICATOR CHAPTER 11...
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Страница 175: ...P50 Agile P15D 12 SCADA Communications P15D EN TM B 12 1 SCADA COMMUNICATIONS CHAPTER 12...
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Страница 187: ...P50 Agile P15D 13 Installation P15D EN TM B 13 1 INSTALLATION CHAPTER 13...
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Страница 207: ...P50 Agile P15D 14 Technical Specifications P15D EN TM B 14 1 TECHNICAL SPECIFICATIONS CHAPTER 14...
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