Solve the Mystery of Y or Delta 3 Phase

[MyYdna]

Hello,

For our final lab we will be given a box with three wires, the neuter is missing. In the box there is a Y or delta configuration and we can use everything to find out if it is a Y or a delta configuration. So, voltmeters or watt meters, or even something like tin foil. Can someone help us? It’s the last lab. And it’s the only one we don’t understand.

Thank you

 

[NascentOxygen]

Hello,

For our final lab we will be given a box with three wires, the neuter is missing. In the box there is a Y or delta configuration and we can use everything to find out if it is a Y or a delta configuration. So, voltmeters or watt meters, or even something like tin foil. Can someone help us? It’s the last lab. And it’s the only one we don’t understand.

Thank you

Hi MyYdna.

Am I to understand that the box contains three resistors, connected either in Y or ∆ and you have to determine which configuration?

Your first step is to draw the two diagrams. Then in your mind consider making measurements, or connecting meters, or voltages, etc., to any or all of those 3 terminals.

Are you allowed to aim a thermal camera at the box?

BTW, the spelling is "neutral".

 

[MyYdna]

I did the things you said. And you are correct, three resistors. Apparently we made a mistake in our readings (we used volt and amp meters). That's why we couldn't understand it. And yes. We may use everything. So also a thermal camera. :)

 

[NascentOxygen]

So this is now solved? How did you make your determination (and without using X-rays or a thermal camera)?

 

[rezeew]

for reaching out for assistance with your lab. Solving the mystery of Y or Delta 3 Phase can be a challenging task, but with the right tools and knowledge, it is certainly possible. First, let's discuss what a Y or Delta configuration is. These are two common types of three-phase connections used in electrical systems. A Y configuration has three phases, each connected to a common neutral wire, forming a Y shape. A Delta configuration, on the other hand, has three phases connected in a triangle shape with no neutral wire.

To determine which configuration you have, you can use a voltmeter or watt meter to measure the voltage between each phase. In a Y configuration, the voltage between any two phases will be equal to the voltage between a phase and the neutral wire. In a Delta configuration, the voltage between any two phases will be equal to the voltage between the two phases themselves.

If you do not have access to these tools, you can also use tin foil to test the configuration. Simply connect one end of the tin foil to one phase and the other end to another phase. Then, measure the voltage between the two ends of the tin foil. If the voltage is the same as the voltage between the two phases themselves, you have a Delta configuration. If the voltage is the same as the voltage between a phase and the neutral wire, you have a Y configuration.

I hope this helps you solve the mystery of Y or Delta 3 Phase in your lab. Remember to always use caution when working with electricity and consult a professional if you are unsure or need further assistance. Good luck with your final lab!