4
1. The Power Xpert Release trip unit
Power XPert® release triP unit for MagnuM PXr circuit breakers
MN013015EN January 2022 www.eaton.com
Table 4. Metering data (continued).
Power metering in the PXr 25
units
accuracy
Real
kW
± 1% of reading
Over the range of 20% to 120% x In, 102 to 690 Vac
line-to-line PF: 0.8 leading to 0.5 lagging at 25°C
(77°F).
Apparent
kVA
Reactive
kvar
Real demand
kW
Apparent demand
kVA
Reactive demand
kvar
Real demand (peak)
kW
Apparent demand (peak)
kVA
Reactive demand (peak)
kvar
energy metering in the PXr 25
units
Real total (f reverse)
kWh
Real net (forward – reverse)
kWh
Real forward (delivered by source to load)
kWh
Real reverse (delivered by load to source)
kWh
Apparent energy
kVAh
Reactive received (in quadrant 3 & 4)
kvarh
Reactive delivered (in quadrant 1 & 2)
kvarh
Reactive total (del received)
kvarh
Reactive net (delivered – received)
kvarh
Note:
a
Neutral current accuracy for internal sensor (4 pole) breakers.
Please note that maximum and minimum values are held
until reset using PXPM or the display. Demand values
are on a configurable fixed or sliding window of 5 to 60
minutes.
The power and energy metering and the protection func-
tions are calculated with the convention that power flow is
from line to load through the circuit breaker. This assumes
the top side conductor to be the line side. If the distribution
system is configured such that the bottom side is the line
side, the power values will indicate reverse power. This
can be changed by using the display and navigation button.
Navigate to the Edit Settings menu and under Power Feed,
select Forward or Reverse.