Questions tagged [star]
The star tag has no usage guidance.
31
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Star delta connection blower motor
I have a star delta motor connection. I just want to confirm if the current from the motor going to the overload and contactor is the same as the contactor going to the breaker? Because the reading I ...
2
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2
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Delta star, beginner question
Hi, can someone tall me why the line comes from behind the motor and comes back in front of it.
Is it because internal connection is crossed? for example, u->x v-y w->z. What am I missing?
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Why connect a 3-phase alternator's star-point to a rectifier bridge?
I noticed while troubleshooting a Denso alternator that the stator's star point was connected to the rectifier bridge. While probing with a multimeter, I think the schematic looks something like the ...
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2
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Three-phase motor Delta/YY connection diagram and windings troubleshooting
I am trying to troubleshoot this 1.4 kW three-phase motor and I'm unsure how its internal windings are interconnected or whether they are shorted.
On the plate it says "Delta/YY 400 V", and ...
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Why this motor shows delta 220 / star 380 which is usually the other way round from what I know? [closed]
Brand new induction motor arrived in the factory,it comes with gearbox on top controlled by VFD, but I could not understand it's nameplate, it should have shown just delta / star without voltage ...
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574
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3-phase star transformer connection with no neutral for wind turbine
I built a wind turbine a while back and have been using it to power lights in my house. It gives out 3-phase in star setup with no neutral. Neutral is buried in epoxy resin in the casting.
It feeds ...
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2
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304
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Multiple ground
In my design I have four different ground:
Ground: from USB for step up and battery charger IC.
Ground1: for a split supply (virtual ground).
Ground2: for the input signal reference.
Ground3: for the ...
- 225
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4
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1k
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LTspice error, "Matrix is singular" for 3 phase circuit
I have been searching about it online but all I can find is info about a transformer. Am I missing something?
Here is the circuit:
This is the circuit I am trying to make:
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Torque developed by Star Connected rotor
The current in each phase of a Y-connected rotor winding is 200 amperes. The resistance per leg is 0.003 ohm. Determine the torque developed by the rotor at a slip of 3%.
I don't understand how to ...
1
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1
answer
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How to solve this star delta problem?
Please help me solve this star delta problem:
My attempt:
What to do next to solve this completely?
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207
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Problem figuring star delta starter circuit
I know the basic functioning of star delta motor starter configuration but kind of stuck on my current project which uses old L&T starter panel. I can't figure out the terminals like A1, A2 (coil ...
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CAN bus expander circuit
I am trying to design a CAN bus expander. In this case I could implement star topology of multiple buses in parallel. It would avoid having problems with reflections and delay.
For this purpose I ...
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47
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Power measurement in star three phase balanced load
I had a doubt, in a balanced star three phase arrangement:
Using two wattmeter method, we obtain power readings as W1 and W2. (which may be unequal).
Let us take W1=5 watt and W2= 6 watt for instance ...
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1
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1k
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Only 3 wires in 3 phase motor terminal box
I have a 3 phase motor with the nameplate below
At the terminal box you have your standard 6 pins labelled u, v, w, u1, v1, w1. However, the u1, v1, w1 is not connected on the terminal block but ...
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2
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763
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3 pole SSR with Neutral connection
I am designing a heater block using 12 heaters. Each one has 200W/230V ratings.
I have decided to use 3 pole SSR for control heaters with help of PID temperature controller.
The SSR manufacture ...
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