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PowerLogic™ PM5300 series user guide | Chapter |
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IEEE mode
In IEEE mode, the PF sign is determined by the type of load (inductive or capacitive) contributing to the reactive power component of apparent power. PF sign is positive (+) for capacitive loads (leading power factor). PF sign is negative
Related topics
•To change the HMI mode, see “Setting up regional settings” on page 39.
•To learn how the meter calculates power factor, see “Power factor” on page 77.
Demand
Demand is a measure of average consumption (typically power or current) over a fixed programmed time interval.
The meter measures instantaneous consumption and can calculate demand using various methods.
Related topics
•For instructions on configuring demand using the front panel, see “Demand setup” on page 43
Power demand calculation methods
Power demand is calculated by dividing the energy accumulated during a specified period by the length of that period. How the power meter performs this calculation depends on the method and time parameters you select (for example, timed rolling block demand with a
To be compatible with electric utility billing practices, the power meter provides the following types of power demand calculations:
•Block interval demand
•Synchronized demand
•Thermal demand
You can configure the power demand calculation method from the front panel or using
ION Setup.
Block interval demand
For block interval demand method types, you specify a period of time interval (or block) that the power meter uses for the demand calculation. Select/configure how the power meter handles that interval from one of these different methods:
•Timed Sliding Block: Select an interval from 1 to 60 minutes (in
•Timed Block: Select an interval from 1 to 60 minutes (in
•Timed Rolling Block: Select an interval and a subinterval. The subinterval must divide evenly into the interval (for example, three
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