DOCA0265EN-03

Calculating Current Demand Values (MicroLogic Active E/EP)

Presentation

The MicroLogic Active E/EP control unit calculates the demand values of phase and average currents.

Each maximum demand value (peak) is stored in memory.

Definition

The demand value is the average value of a quantity over a specified period of time (interval).

Current Demand Value Calculation

The current demand is calculated using the thermal method. The thermal current demand calculates the demand based on a thermal response which mimics the analog thermal demand meters, as shown in the following illustration:

The time constant of integration (current demand calculation interval) is fixed and set at 15 minutes.

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