Question about Ingersoll Rand Stationary Air Cooled Rotary Screw Compressor 10 Hp, 35 Cfm At 125 Psi, Model# Ep

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Hi...in the display say " stared fault" i see the auxiliar and its ok. its wye delta.

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Check 5 auxiliary contact of the magnetic contactor

Posted on Aug 22, 2012

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3phase to 1phase transformer


when your dealing with a high leg as long as your using two phase wires it is balanced. any two legs will give you 240 volts a.c.

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Wiring schematic for a 1971 Reuland 3 phase # Hp. electric motor for a grinder pump


Its going to depend on whether you are connecting to 240 volt or 440 volts...

It also depends on whether it is a 'wye' wound motor or a 'delta' wound motor.

A nine wire motor is probably a multi-voltage motor capable of running on either 240 or 440 volts. For operation on low voltage, 240 v, the windings must be connected in parallel whereas hi voltage operation makes it necessary to have the windings wired in series.

I will not give the details on the winding connections because the process to determine whether it is a 'delta' or 'wye' wound motor is too involved to derscribe on a forum. But..... if it is a 'wye' wound motor, there will be three additional wire connections 10, 11, and 12, that are wired together and under the end bell and not accessible.

We don't want to 'smoke' your motor, so let the suggestion be to contact a reputable and qualified electrician who you trust to determine what's required and to connect it without the potential for damage.

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1 Answer

Wiring a dimmer switch with 208vac, single pole


208 Volt 2-wire is generally achieved by pulling two hot wires off 3-phase 120/208 Wye or 208 Delta, or Highleg to center tap off high leg delta.
http://waterheatertimer.org/How-to-wire-3-phase-electric.html
http://waterheatertimer.org/images/3-phase-timer-diagram3-T104-208-240.jpg

Since each of these three phase systems also offers 120volt for lights, and a dimmer can be used for lights, then I wonder what you are using dimmer for?

208 volts.can be controlled by turning off one hot of the two hot wires.
Install dimmer on one of the hot wires, and see what happens.
Is the dimmer rated for 208 volts?

Add a comment and say what you discover.

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1 Answer

Wye wont my vizio tv display anything?


that problem is usually cause of bad T-con board,,simply replacing that board can possibly fix the problem

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1 Answer

What is the use of wye delta?


I don't know why your question is bound to this special breaker.

If your question is common, the wye/delta is a way to reduce the starting current of a large three phase asinchronous motor.
When a three phase motor is first connected in wye (star), the starting (peak) current is about 3 times less than this in delta. When already in motion the electromotive force will make the peak current when turned in delta much less, than that with a stopped motor.

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1 Answer

Make a connection of a 6-leads, 3-phase motor in delta and wye connection


connection would be easier in the wye. single phase current is easier to pull of of one leg in the wye to get your common that you would not have in a delta connection. three phase doesnt require a nuetral. just 3 phase 120degrees out of phase from each other

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1 Answer

I have a 15kw motor driven off a siemens micromaster 440. I cannot get the motor to run in delta. I have to run it in star. I have similar drives on site and these motors are connected in delta. what...


Why do you want to run the motor in the delta configuration? The VFD will change the speed to anything you want to do. The delta and Wye connections are normally used to change the speed of a motor. That's what the VFD is for...??

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