Tagged Questions
0
votes
1answer
54 views
Any Ideas for Understand one of the 3 phases has powered
I want to ask you about a situation which i couldnt find the exact solution or better way to do the job.
The situation is i have 3 phase (380V) induction motor and one of the phases to the motor had a ...
0
votes
1answer
129 views
Why is using a single phase device across phases of a 3 phase outlet OK?
My friend connected two wires to two "non-earth hole" in a 3 phase outlet (208V) to run a 220V single phase blower (Note: the outlet has four holes, one of them is earth). Basically, he used the ...
0
votes
1answer
160 views
3-phase power calculation when phase to phase voltages are different
I have a 3-phase power supply rated at 230VAC per phase. However, the phase to phase voltages are not equal. Suppose \$V_{RY}\$, \$V_{YB}\$ and \$V_{BR}\$ be the three phase-to-phase voltages between ...
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votes
3answers
1k views
How does a three-phase transformer work with phases sharing a common core?
Google search reveals a lot of pictures of three-phase transformers. Looks like a common setup is to have three pairs of winding and a shared core. The core typically consists of three "bars" in ...
1
vote
2answers
1k views
What causes unequal phase-to-neutral voltages in three-phase distribution systems?
A four-wires cable runs into an apartment building to supply it with three-phase 380/220V alternating current. Each apartment is connected to one phase, different apartments are connected to different ...
2
votes
1answer
248 views
Shortcircuited motorcycle alternator leads to RPM proportional losses?
I've had this puzzle for a couple of years but never been able to figure it out. Regulator manufacturers for typical 3-phase alternators provide the 14.4V by 'shorting' the phases. Obviously this ...
