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Power Quality Analyzer Model 3945
6.7.4 Alarm Conditions Confi guration
The Alarm Conditions window allows you to set up 10 alarm confi gurations.
Figure 6-6
Hysteresis:
This value for alarms is set to prevent multiple recordings of an event
that goes above the threshold and a certain percentage below it at times.
Disable All Alarms:
When this box is checked, all alarms will be disabled even if
the individual alarm enable box is checked.
Enabled:
When check box is checked, alarm is enabled.
Capture Parameter:
The Alarm will be triggered based on the value of the
selected parameter.
Choices include:
None:
no alarm
Vrms:
voltage root mean squared
Urms:
voltage phase minus phase
root mean squared
Arms:
current root mean squared
VPST:
voltage short term fl icker
Vcf:
voltage crest factor
Ucf:
voltage phase minus phase
crest
factor
Acf:
current crest factor
Vunb:
voltage unbalance
Aunb:
current unbalance
Hz:
frequency
Akf:
current K factor
Vthd:
voltage total harmonic distortion
Uthd:
voltage phase minus phase
total harmonic distortion
Athd:
current total harmonic distortion
W:
active power