Hello everyone, and thanks in advance for viewing.
I have an industrial control panel that is powering a VFD, pilot lights, relays, digital panel meters, and some other devices. There is one(1) power feed powering the panel: it is 460VAC, 3-phase from a motor control center (MCC) bucket.
The panel contains the following:
I know how much current / power each device draws - I have this information readily available.
Suppose you are asked to calculate the power usage of this panel. I am looking for the proper method to do this. What is the proper method for calculating the power usage of this panel?
I have an industrial control panel that is powering a VFD, pilot lights, relays, digital panel meters, and some other devices. There is one(1) power feed powering the panel: it is 460VAC, 3-phase from a motor control center (MCC) bucket.
The panel contains the following:
- (1) VFD. It is 460VAC, 3-phase and is running a 20HP pump.
- (1) 500VA transformer for transforming 460VAC, 3-phase to 120VAC, 1-phase. A few loads in the panel are 120VAC, 1-phase.
- (1) 24VDC power supply that is powered by the aforementioned 120VAC, 1-phase. Several loads in the panel are 24VDC. 24VDC loads include pilot lights and digital panel meters.
I know how much current / power each device draws - I have this information readily available.
Suppose you are asked to calculate the power usage of this panel. I am looking for the proper method to do this. What is the proper method for calculating the power usage of this panel?