6-20
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
METERING
CHAPTER 6: ACTUAL VALUES
6
V
AB
and V
CB
are phase-to-phase voltage phasors
Î is the conjugate of I
6.4.4.7 Energy metering
ACTUAL VALUES
METERING
SOURCE SRC 1
ENERGY
This menu displays metered values for real and reactive energy. The "SRC 1" text is replaced by the name programmed by
the user for the associated source (see
SETTINGS
SYSTEM SETUP
SIGNAL SOURCES
). Because energy values are
accumulated, record them and then reset them immediately prior to changing CT or VT characteristics.
6.4.4.8 Frequency metering
ACTUAL VALUES
METERING
SOURCE SRC 1
FREQUENCY
The metered frequency values are displayed in this menu. The "SRC 1" text is replaced by the name programmed by the
user for the associated source (see
SETTINGS
SYSTEM SETUP
SIGNAL SOURCES
).
SOURCE FREQUENCY
is measured via software-implemented zero-crossing detection of an AC signal. The signal is either a
Clarke transformation of three-phase voltages or currents, auxiliary voltage, or ground current as per source configuration
(see the
SYSTEM SETUP
POWER SYSTEM
settings). The signal used for frequency estimation is low-pass filtered. The final
frequency measurement is passed through a validation filter that eliminates false readings due to signal distortions and
transients.
6.4.5 Sensitive directional power
ACTUAL VALUES
METERING
SENSITIVE DIRECTIONAL POWER
DIRECTIONAL POWER 1(2)
The effective operating quantities of the sensitive directional power elements display here. The display is useful to calibrate
the feature by compensating the angular errors of the CTs and VTs with the use of the
RCA
and
CALIBRATION
settings.
6.4.6 Broken rotor bar
ACTUAL VALUES
METERING
BROKEN ROTOR BAR
ENERGY
SRC 1
SRC 1 POS WATTHOUR:
0.000 Wh
SRC 1 NEG WATTHOUR:
0.000 Wh
SRC 1 POS VARHOUR:
0.000 varh
SRC 1 NEG VARHOUR:
0.000 varh
FREQUENCY
SRC 1
SRC 1 FREQUENCY:
0.00 Hz
DIRECTIONAL
POWER 1
DIRECTIONAL POWER 1
3
Φ
: 0.000 W
BROKEN ROTOR BAR
COMPONENT LEVEL:
-60.0 dB
COMPONENT FREQ.:
61.85 Hz
MOTOR LOAD AT BRB
CALC.: 0.81 x FLA
Содержание M60
Страница 9: ...TABLE OF CONTENTS M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL ix INDEX ...
Страница 10: ...x M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL TABLE OF CONTENTS ...
Страница 14: ...1 4 M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL FOR FURTHER ASSISTANCE CHAPTER 1 INTRODUCTION 1 ...
Страница 208: ...4 88 M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL FLEXLOGIC DESIGN USING ENGINEER CHAPTER 4 INTERFACES 4 ...
Страница 494: ...5 286 M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL CONTROL ELEMENTS CHAPTER 5 SETTINGS 5 Figure 5 158 Time out mode ...
Страница 552: ...5 344 M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Страница 596: ...7 14 M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 602: ...9 4 M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL SATURATION DETECTOR CHAPTER 9 THEORY OF OPERATION 9 ...
Страница 652: ...C 6 M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL COMMAND LINE INTERFACE APPENDIX C COMMAND LINE INTERFACE C ...
Страница 660: ...iv M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...