GE Industrial Solutions WavePro Low-Voltage Power Circuit Breakers - Manual (Page 32)

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 3. Metering Mode
24
Power Demand
Power demand is the average of total power over the
selected interval (5, 10, …, 55, 60 minutes). This display is
updated every minute. The power demand display is illus-
trated in Figure 48.
Figure 48. Trip Unit display for power demand.
Peak Power Demand
Peak power demand is stored in nonvolatile memory.
Every minute, the power demand is calculated and com-
pared 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 illustrated in Figure 48, 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 present demand, hold
down the
VALUE key and press the SELECT key.
Frequency
This display, illustrated in Figure 49, shows the frequency
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 frequency is dis-
played. If neither are present, this display does not appear.
The frequency is displayed in steps of 1 Hz.
Figure 49. Trip Unit display for frequency.