6 Protection Functions
P50 Agile P15D
6-10
P15D/EN TM/B
2.5.1
Second Harmonic Blocking Implementation
Second harmonic blocking can be applied to the following overcurrent protection types:
•
Phase Overcurrent protection
•
Earth Fault protection
Second harmonic blocking is implemented in the GROUP (n) SYSTEM CONFIG column, where (n) is
the number of the setting group.
Second harmonic blocking is applicable to all stages of each of the elements.
The function works by identifying and measuring the inrush currents present at switch on. It does this
by comparing the value of the second harmonic current components to the value of the fundamental
component. If this ratio exceeds the set thresholds, then the blocking signal is generated. The
threshold is defined by the
2ndHarm Thresh
setting.
We only want the function to block the protection if the fundamental current component is within the
normal range. If this exceeds the normal range, then this is indicative of a fault, which must be
protected. For this reason there is another settable trigger
I> lift 2H
, which when exceeded, stops the
2nd harmonic blocking function.
Each overcurrent protection element has a
I>Blocking
setting with which the type of blocking is
defined.
Содержание MiCOM P50 Agile P15D
Страница 2: ......
Страница 3: ...P50 Agile P15D 1 Introduction P15D EN TM B 1 1 INTRODUCTION CHAPTER 1...
Страница 4: ...1 Introduction P50 Agile P15D 1 2 P15D EN TM B...
Страница 8: ...1 Introduction P50 Agile P15D 1 6 P15D EN TM B 2 3 Ordering information Figure 1 Ordering Information...
Страница 9: ...SAFETY INFORMATION CHAPTER 2...
Страница 10: ...Safety Information Pxxx 2...
Страница 21: ...P50 Agile P15D 3 Hardware Design P15D EN TM B 3 1 HARDWARE DESIGN CHAPTER 3...
Страница 22: ...3 Hardware Design P50 Agile P15D 3 2 P15D EN TM B...
Страница 28: ...3 Hardware Design P50 Agile P15D 3 8 P15D EN TM B...
Страница 29: ...P50 Agile P15D 4 Front Panel P15D EN TM B 4 1 FRONT PANEL CHAPTER 4...
Страница 30: ...4 Front Panel P50 Agile P15D 4 2 P15D EN TM B...
Страница 35: ...P50 Agile P15D 4 Front Panel P15D EN TM B 4 7 Figure 2 USB Port...
Страница 36: ...4 Front Panel P50 Agile P15D 4 8 P15D EN TM B...
Страница 37: ...P50 Agile P15D 5 Configuration P15D EN TM B 5 1 CONFIGURATION CHAPTER 5...
Страница 38: ...5 Configuration P50 Agile P15D 5 2 P15D EN TM B...
Страница 129: ...P50 Agile P15D 5 Configuration P15D EN TM B 5 93 2 4 18 2 View Error Log V00405 VIEW RECORDS Error Log 000 Fault Record...
Страница 130: ...5 Configuration P50 Agile P15D 5 94 P15D EN TM B...
Страница 131: ...P50 Agile P15D 6 Protection Functions P15D EN TM B 6 1 PROTECTION FUNCTIONS CHAPTER 6...
Страница 132: ...6 Protection Functions P50 Agile P15D 6 2 P15D EN TM B...
Страница 141: ...P50 Agile P15D 7 Protection Parametre Settings P15D EN TM B 7 1 PROTECTION PARAMETRE SETTINGS CHAPTER 7...
Страница 142: ...7 Protection Parametre Settings P50 Agile P15D 7 2 P15D EN TM B...
Страница 154: ...7 Protection Parametre Settings P50 Agile P15D 7 14 P15D EN TM B...
Страница 155: ...P50 Agile P15D 8 Monitoring Control P15D EN TM B 8 1 MONITORING CONTROL CHAPTER 8...
Страница 156: ...8 Monitoring Control P50 Agile P15D 8 2 P15D EN TM B...
Страница 162: ...8 Monitoring Control P50 Agile P15D 8 8 P15D EN TM B...
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...
Страница 168: ...10 Impulse Output for Tripping Coil P50 Agile P15D 10 2 P15D EN TM B...
Страница 171: ...P50 Agile P15D 11 Impulse for Flag Indicator P15D EN TM B 11 1 IMPULSE FOR FLAG INDICATOR CHAPTER 11...
Страница 172: ...11 Impulse for Flag Indicator P50 Agile P15D 11 2 P15D EN TM B...
Страница 175: ...P50 Agile P15D 12 SCADA Communications P15D EN TM B 12 1 SCADA COMMUNICATIONS CHAPTER 12...
Страница 176: ...12 SCADA Communications P50 Agile P15D 12 2 P15D EN TM B...
Страница 187: ...P50 Agile P15D 13 Installation P15D EN TM B 13 1 INSTALLATION CHAPTER 13...
Страница 188: ...13 Installation P50 Agile P15D 13 2 P15D EN TM B...
Страница 206: ...13 Installation P50 Agile P15D 13 20 P15D EN TM B...
Страница 207: ...P50 Agile P15D 14 Technical Specifications P15D EN TM B 14 1 TECHNICAL SPECIFICATIONS CHAPTER 14...
Страница 208: ...14 Technical Specifications P50 Agile P15D 14 2 P15D EN TM B...
Страница 219: ...P50 Agile P15D 15 Wiring Diagrams P15D EN TM B 15 1 WIRING DIAGRAMS CHAPTER 15...
Страница 220: ...15 Wiring Diagrams P50 Agile P15D 15 2 P15D EN TM B...
Страница 223: ......