Total Aggregate Power; Power Demand; Peak Power Demand; Frequency - GE MicroVersaTrip Plus Series User Manual

Total Apparent Power
The value displayed for total apparent power, as
illustrated in Figure
total apparent power in volt-amperes flowing
through all three phases. The value is displayed from
0 to 999 kVA, then automatically switches units to
display 1 .00 to 999 MV A.
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Figure 53.

Trip Unit display for aggregate apparent power.

Power Demand

Power demand is the average of total power over the
selected interval (5, 10,
play is updated every minute. The power demand
display is illustrated in Figure 54.
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.. -
Figure 54.

Trip Unit display for power demand.

Peak Power Demand

Peak power demand is stored in nonvolatile mem­
ory. Every minute, the power demand is calculated
and compared against the stored peak power
demand. If the new power demand is greater than
the stored peak demand, the Trip Unit stores the
new power demand as the peak value. The display of
peak power demand is identical to the display illus­
trated in Figure 54, except that the units segment (in
this case, MW) flashes.
Peak demand is stored in nonvolatile memory. The
value in the display can be reset through the Trip
Unit keypad. To reset the peak demand to the pres-
53, represents the aggregate
MVA METER
. . . , 55, 60 minutes) . This dis­
MN METER
DEMAND
ent demand, hold down the
key.
SELECT

Frequency

This display, illustrated in Figure
quency of the line current. Either line voltage or
current must be present for this display to appear.
The frequency is calculated from the current and
voltage signals. If both are present, the voltage fre­
quency is displayed. If neither are present, this dis­
play does not appear.
The frequency is displayed in steps of 1 Hz .
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0
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Figure 55.

Trip Unit display for frequency.

29
3.
key and press the
VALU E
55, shows the fre­
\31
Hz
METER