Calculating KVA delivered on 3 phase feed

  • Thread starter Thread starter evang
  • Start date Start date
  • Tags Tags
    3 phase Phase
AI Thread Summary
To estimate the power available for 120V and 208V loads from a 3-phase feed delivering 200A at 600V, it is clarified that the 200A is per phase, resulting in a total of 360 KVA. The calculation for power is based on the assumption of a phase-to-ground voltage of 120V and a load current of 200A, yielding 72 KVA. The voltage supplied to the building is confirmed to be 600V per phase. Therefore, the total power available for the loads can be accurately calculated using these parameters. Understanding the phase and voltage specifications is crucial for proper power estimation.
evang
Messages
2
Reaction score
0
For a building powered by a 3-phase feed, I need to estimate the amount of power available to 120v & 208v loads in the building.

If the feed delivers 200A at 600v, is this 200A per phase (meaning 360 KVA total) or a third of that?

TIA.
 
Engineering news on Phys.org
you have not clearly mentioned supply voltage. from where the 600v comes into picture?

assuming phase to ground voltage as 120 (phase to phase voltage 208) and load current as 200A
Power = 3 * 120V * 200A
= 72000 VA
= 72 KVA
 
Correct, the voltage supplied to the building is 600v per phase.
200A is the max current available on the 600v feed.
 

Thread '3-terminal device external modeling'

Very basic question. Consider a 3-terminal device with terminals say A,B,C. Kirchhoff Current Law (KCL) and Kirchhoff Voltage Law (KVL) establish two relationships between the 3 currents entering the terminals and the 3 terminal's voltage pairs respectively. So we have 2 equations in 6 unknowns. To proceed further we need two more (independent) equations in order to solve the circuit the 3-terminal device is connected to (basically one treats such a device as an unbalanced two-port...
View full post »
Thread 'Weird near-field phenomenon I get in my EM simulation'

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
View full post »

Similar threads

A little help understanding 3 phase waveforms and summation
Replies
5
Views
2K
Calculating 208V Power: 3 Methods Explained
Replies
14
Views
16K
Induction motor windings, number of turns per phase and per pole
Replies
2
Views
3K
Determining inductive reactance from a 3-phase AC circuit
Replies
17
Views
3K
Metering a Single Phase 208 VAC Circuit
2
Replies
77
Views
7K
US 2-phase conversion to EU one phase
Replies
41
Views
17K
Calculating 208V load, purpose of sqrt(3) and power factor?
Replies
11
Views
4K
3 Phase Harmonics and Solid State Relay Issues
Replies
26
Views
3K
Building a three phase motor -- figuring out how many poles
Replies
22
Views
5K
Required current rating of 3-phase power system
Replies
1
Views
6K

Hot Threads

Recent Insights

Back
Top