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Ceiec Electric Technology
The PMC-630E provides the following energy measurements:
Active Energy
kWh Import
kWh Export
kWh Net
kWh Total
Reactive Energy
kvarh Import
kvarh Export
kvarh Net
kvarh Total
Apparent Energy
kVAh Total
Table 4-1 Energy Measurements
4.2.4 Demands
Demand is defined as the average power consumption over a fixed interval (usually 15 minutes). The
PMC-630E supports the sliding window demand calculation and has the following setup parameters:
# of Sliding Windows
:
1-15
Demand Period
:
1 to 99 minutes. For example, if the # of Sliding Windows is set
as 1 and the Demand Period is 15, the demand cycle will be
1×15=15min.
The PMC-630E provides the following Demand parameters:
Present Demand
Present Demand
Present Demand
Va Demand
kWa Demand
P.F.b Demand
Vb Demand
kWb Demand
P.F.c Demand
Vc Demand
kWc Demand
∑P.F. Demand
VLN average Demand
∑kW Demand
FREQ Demand
Vab Demand
kvara Demand
Voltage Unbalance Demand
Vbc Demand
kvarb Demand
Current Unbalance Demand
Vca Demand
kvarc Demand
Va THD Demand
VLL average Demand
∑kvar Demand
Vb THD Demand
Ia Demand
kVAa Demand
Vc THD Demand
Ib Demand
kVAb Demand
Ia THD Demand
Ic Demand
kVAc Demand
Ib THD Demand
I average Demand
∑kVA Demand
Ic THD Demand
I4 Demand
P.F.a Demand
Table 4-2 Demand Parameters
Note:
1) The Peak Demand of This Month can be reset manually through the front panel or via
communications.
4.2.5 Max/Min per Demand Period
The PMC-630E calculated the max/min value per demand period of the following measurements:
1)
3-phase Voltage and Frequency
2)
3-phase Current and Neutral Current (I4)
3)
3-phase Power and Power Factor
4)
Voltage and Current Unbalance
5)
Voltage and Current THD
All Max/Min data can be accessed through communication.