Circutor CEM-C12c, Instruction Manual

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4.- OPERATION
The
CEM-C12c
measures in the 4 quadrants (consumption and generation).
0º
90º
180º
-90º
Capacitive
Capacitive
Inductive
Inductive
Generation
Power
Consumption
Power
Single-phase Three-phase
Single-phase
Single-phase
Single-phase Three-phase
Three-phase
Three-phase
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
Figure 6: Sign convention�
Table 4: CEM-C12c Measurement parameters�
Parameter Display
RS-485
Instantaneous Maximum Minimum
Voltage
   
Current
   
Frequency
 
- -
Active Power
   
Reactive Power
   
Inductive Reactive Power -
  
Capacitive Reactive Power -
  
Apparent Power
   
Power Factor
   
Maximum Active Power Demand -
 
-
Active Energy Consumed -

- -
Active Energy Generated -

- -
Total Active Energy
 
- -
Inductive Reactive Energy Consumed
 
- -
Inductive Reactive Energy Generated -

- -
Capacitive Reactive Energy Consumed -

- -
Capacitive Reactive Energy Generated -

- -
Reactive Energy Consumed -

- -
Reactive Energy Generated -

- -
Total Reactive Energy -

- -

Maximum demand
The maximum demand is the average instantaneous power over a specific time interval, usually 15
minutes. There are several ways to calculate this parameter:
10
CEM-C12c
Instruction Manual