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Edit PQ Trigger (
#
)
−
Category Screen
Choose a value for each category where applicable. Generally, you can
select each category using the up/down cursor keys and select a value
in that category using the left/right cursor keys. Numerical values (e.g.
Limit) are entered directly from the numeric keypad.
7.3.2
Power Quality Trigger Parameter Definitions
Channel
: AV, AI, CV, CI, BV, BI, NI - includes all of the input voltages
and currents, including neutral. Set the Channel value to the input signal
you want to compare to the Limit.
Limit Ftn.
: (Limit Function)
x > Limit
,
x < Limit
; the first indicates a
measured value greater than the limit, and the second indicates a measured
value less than the limit.
Limit
: Floating point value; constantly being compared to the input
Channel value (x) in order to capture an event trigger.
For example,
Limit = 130 and
x > Limit
would mean that a trigger would occur if the
measured input voltage became greater than 130 Vrms (i.e.
x >
130).
Limit Mode
: Absolute or Percent; choose the limit mode that suits your
application.
For Absolute, the limit is the same number as the value
entered in for Limit. For example, a Limit of 130 could generate an event
trigger if the voltage swings above 130 Volts. For Percent, the measured
value is compared to a percentage of the measured signal. Ten percent
above nominal would be entered as 1.1.
Ref.
Mode
:
(Reference Mode) choose either Absolute or Sliding.
Absolute means that the reference value is fixed and compared directly.
Sliding means that Reference value is not fixed (or absolute) and can
change slowly, such as with a gradually rising or dropping voltage. See
page 111.
Hysteresis
:
a floating point value; reduces extraneous records from
accumulating when a measured value wavers around a limit or reference.
Hyst.
Mode
: (Hysteresis Mode) Absolute or Percent; absolute refers
to a fixed value for hysteresis, and percent refers to a percentage of the
measured value.
As the measured value increases or decreases, so the
hysteresis will change according to the given percentage of hysteresis.
Multiphase
: B, C, BC or OFF; means that the trigger parameters can
also apply to B phase, C phase or both B and C phase, without defining
108
Содержание Portable Power Sentinel 933A
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Страница 35: ...Figure 2 2 Front Panel Description 17 ...
Страница 128: ...Figure 7 9 Power Quality Reference Selection Softkey Figure 7 10 Configuring the Power Quality Reference 110 ...
Страница 163: ...Chapter 10 Connection Diagrams 145 ...