EET PMC-33M-A User Manual

CET Electric Technology
31
4.2 Power and Energy
4.2.1 Basic Measurements
The PMC-33M-A provides the following basic measurements which are available through the LCD
display or communications.
Parameter
Phase A
Phase B
Phase C
Total
Average
Uln
●
●
●
-
●
Ull
●
●
●
-
●
Current
●
●
●
-
●
Neutral Current
-
-
-
In (Calculated)
-
kW
●
●
●
●
-
kvar
●
●
●
●
-
kVA
●
●
●
●
-
Power Factor
●
●
●
●
-
Frequency
●
-
-
-
-
U Fundamental
●
●
●
I Fundamental
●
●
●
Table 4-2 Basic Measurements
4.2.2 Energy Measurements
The PMC-33M-A provides Energy parameters for active energy (kWh), reactive energy (kvarh) and
apparent energy (kVAh) with a resolution of 0.01k and a maximum value of ±10,000,000.00. When the
maximum value is reached, the energy registers will automatically roll over to zero. The energy can be
reset manually or preset to user-defined values through the front panel or via communications.
The PMC-33M-A provides the following energy measurements:
3-Phase Energy
kWh Import/Export/Net/Total
kvarh Import/Export/Net/Total
kvarh of Q1/Q2/Q3/Q4
kVAh Total
Per-Phase Energy
(Phase A/B/C):
kWh Import/Export/Net/Total
kvarh Import/Export/Net/Total
kvarh of Q1/Q2/Q3/Q4
kVAh
Table 4-3 Energy Measurement
4.2.3 Demand Measurements
Demand is defined as the average power consumption over a fixed interval (usually 15 minutes) based
on the sliding window method. The PMC-33M-A provides Present Demand and Predicted Demand for
Ia, Ib, Ic, kW Total, kvar Total and kVA Total. Predicted Demand is typically used for pre-alarming and to
help users reduce power consumption using a Setpoint to warn that the Demand limit may be exceeded.
The PMC-33M-A provides the following setup parameters:
Setup Parameter
Definition
Options/Default*
Demand Period
1 to 60 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.
1 to 60 min
15*
# of Sliding
Windows
Number of Sliding Windows.
1* to 15
Self-Read Time
The Self-Read Time allows the user to specify the time and
day of the month for the Maximum Demand Self-Read
operation. The Self-Read Time supports three options:
 A zero value means that the Self-Read will take place at
00:00 of the first day of each month.
 A non-zero value means that the Self-Read will take place
at a specific time and day based on the formula: Self-
Read Time = Day * 100 + Hour where 0 ≤ Hour ≤ 23 and 1
≤ Day ≤ 28. For example, the value 1512 means that the
Self-Read will take place at 12:00pm on the 15th day of
each month.
 A 0xFFFF value will disable the Self-Read operation and
Default=0xFFFF

EET PMC-33M-A Specifications

General

Brand	EET
Model	PMC-33M-A
Category	Measuring Instruments
Language	English