The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [delta]

The tag has no usage guidance.

10 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
60 views

3 Phase “Black Box” Load

I'm doing a few basic load calculations on a 3 phase circuit at work and I stumbled on a concept I'm not sure how to proceed. Let's say you have a 3 phase load and it is basically a black box. For ...
19 views

Brushless motor (Delta-wye switch or overvolting at lower current drown)

I have been playing with Motor CAD for a while and can't decide what to do. Here is my problem. I have a building a two-hub electric mountain board. I have motors that are rated for 350W 36V which I ...
253 views

Confusion with applying KCL to three phase delta connection

Below is a 3-phase delta connected for balanced loads Z: Since phase to phase voltages(voltage across loads) have 120 degrees phase differences and since the loads have the same impedance we can ...
124 views

Open Delta's “virtual” power factor

Open Delta yields 57% of power instead of the 86% it would yield if no 30-degree angle gets in the way. Can that 30-degree angle be corrected with a capacitor and an inductor (it requires a cap in one ...
48 views

Delta to delta 2000 kVA transformer

I have a delta to delta 2000 kVA transformer that on power up with no load except whatever is in the main switch gear I am getting 400 volts to ground on one phase 280 on another and 95 on another, ...
45 views

how to get the line voltage of 3 phase delta circuit with power factor known at first?

In the following picture, it shows that a black box at right. the circuit inside the black box is a 3 phase load balanced delta connection circuit. the line voltage of it is 500V and the power factor ...
73 views

Three-phase circuit with line impedance

I'm having some trouble with the first part of an exercise. If I only have V1, and Zl, how can I find what the line voltage V2 is equal to? So that, then I could calculate the phase currents A1,A2,A3....
154 views

I have a question about a problem in a textbook I can't exactly solve. It goes as follow: Given a message m(t) as input to a DM system $$m(t) = 3cos(890\pi t) - 0.7sin(1000\sqrt{3}t)$$ Determine ...