Hitachi Relion 670 Series Applications Manual page 353

1MRK506375-UEN Rev. N
tDelayAlm4thHD: It defines the alarm time limit for the calculated fourth harmonic distortion which is
applied after the warning signal pickup and depends on its sustainability.
WrnLimit5thHD: It defines the warning limit for the calculated fifth harmonic distortion. According to
standard IEEE 519-2014, harmonic voltage distortions on power system 161 kV and above is limited
to 1.0% for each individual harmonic.
tDelayAlm5thHD: It defines the alarm time limit for the calculated fifth harmonic distortion which is
applied after the warning signal pickup and depends on its sustainability.
WrnLimit6thHD: It defines the warning limit for the calculated sixth harmonic distortion. According to
standard IEEE 519-2014, harmonic voltage distortions on power system 161 kV and above is limited
to 1.0% for each individual harmonic.
tDelayAlm6thHD: It defines the alarm time limit for the calculated sixth harmonic distortion which is
applied after the warning signal pickup and depends on its sustainability.
WrnLimit7thHD: It defines the warning limit for the calculated seventh harmonic distortion. According
to standard IEEE 519-2014, harmonic voltage distortions on power system 161 kV and above is
limited to 1.0% for each individual harmonic.
tDelayAlm7thHD: It defines the alarm time limit for the calculated seventh harmonic distortion which
is applied after the warning signal pickup and depends on its sustainability.
WrnLimit8thHD: It defines the warning limit for the calculated eighth harmonic distortion. According to
standard IEEE 519-2014, harmonic voltage distortions on power system 161 kV and above is limited
to 1.0% for each individual harmonic.
tDelayAlm8thHD: It defines the alarm time limit for the calculated eighth harmonic distortion which is
applied after the warning signal pickup and depends on its sustainability.
WrnLimit9thHD: It defines the warning limit for the calculated ninth harmonic distortion. According to
standard IEEE 519-2014, harmonic voltage distortions on power system 161 kV and above is limited
to 1.0% for each individual harmonic.
tDelayAlm9thHD: It defines the alarm time limit for the calculated ninth harmonic distortion which is
applied after the warning signal pickup and depends on its sustainability.
15.13 Fault current and voltage monitoring function
FLTMMXU
15.13.1 Function revision history
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Railway application RER670
Application manual
Product History
revision
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Section 15
Monitoring
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