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Table of Contents
Chapter 1
Introduction
Instruction Book Contents ................................................................... 1–1
M-3520 Intertie Protection ................................................................... 1–2
Accessories ........................................................................................ 1–4
Chapter 2
Application
System Diagrams ................................................................................ 2–2
Configuration ....................................................................................... 2–4
Functions ............................................................................................ 2–4
Special Input/Output Considerations ................................................... 2–4
System Setup ..................................................................................... 2–5
Setpoints and Time Settings ............................................................... 2–7
21 Phase Distance .............................................................................. 2–7
25 Sync Check ................................................................................... 2–11
27 Undervoltage, 3-Phase ................................................................... 2–16
32 Directional Power ........................................................................... 2–17
46 Negative Sequence Overcurrent .................................................... 2–20
47 Negative Sequence Overvoltage .................................................... 2–22
50 Instantaneous Overcurrent, 3-Phase ............................................. 2–23
50G Instantaneous Overcurrent, Neutral ............................................. 2–24
51V Inverse Time Overcurrent with
Voltage Control or Voltage Restraint ................................................ 2–25
51G Inverse Time Neutral Overcurrent ............................................ 2–28
59I Peak Overvoltage ....................................................................... 2–29
59 Overvoltage, 3-Phase .................................................................. 2–30
59G/27G Overvoltage/Undervoltage,
Neutral Circuit or Zero Sequence ..................................................... 2–31
60FL Fuse Loss ................................................................................ 2–35
67 Phase Directional Overcurrent .................................................... 2–36
67N Residual Directional Overcurrent .............................................. 2–39
78 Out of Step ................................................................................... 2–41
79 Reconnect Enable Time Delay .................................................... 2–43
81 Frequency .................................................................................... 2–45
81R Rate of Change of Frequency ................................................... 2–47
2.5
Oscillograph Recorder ...................................................................... 2–48
Target History Recorder ...................................................................... 2–49
IRIG-B Time Synchronization .............................................................2–49
TABLE OF CONTENTS
M-3520 Intertie Protection
Instruction Book
Содержание M-3520
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