×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Meat Grinder with 208V 3 Phase motor

Meat Grinder with 208V 3 Phase motor

Meat Grinder with 208V 3 Phase motor

(OP)
I purchased a meat grinder and had the option to set the voltage at either 208V 3 phase or 220V 3 phase, we chose 208V.

The problem is we have recently moved to a new location and now have 220V 3 phase service.   What can we do to fix this?  Is there a way to reset the voltage in the grinder?  Or can we use a transformer?

Thank you!

RE: Meat Grinder with 208V 3 Phase motor

Most likely, it should work fine at 220 V. Just measure the load current and see if it exceeds the nameplated current.

Muthu
www.edison.co.in

RE: Meat Grinder with 208V 3 Phase motor

(OP)
Thank you!

If it exceeds the nameplate current should I be looking at a transformer?

RE: Meat Grinder with 208V 3 Phase motor

It would depend on how much % the load current goes beyond the nameplate and the ambient temperature around the motor. Ultimately, it's the temperature that fries the winding. Use  a non-contact temperature meter to check on the motor body temperature and bearing house temperature.

Good luck.

Muthu
www.edison.co.in

RE: Meat Grinder with 208V 3 Phase motor

(OP)
Could I change the voltage on the machine?  When I purchased it they said that they would "set" it to a certain voltage before shipping.  How do they make this switch?
 

RE: Meat Grinder with 208V 3 Phase motor

I don't think you can set the voltage unless it's a dual voltage motor (like 460 V / 230 V). Can you post the motor nameplate details here ?

Muthu
www.edison.co.in

RE: Meat Grinder with 208V 3 Phase motor

(OP)
I will tomorrow when I'm back at the plant.  Thank you so much for your help so far!   

RE: Meat Grinder with 208V 3 Phase motor

Also need to know the exact voltage at the plant and the frequency (hz) of the electrical grid. As far as I know, "220" is no longer a standard utility voltage

There's 120/240 single phase, 208, 240, 480, 600 3 phase all at 60 hz in North America.
 
In EU, 230 single phase and 400 3 phase on 50 hz and probably others.

So what is it?

RE: Meat Grinder with 208V 3 Phase motor

The factory may have selected either a 200 Volt rated motor for 208 Volt service or a 230 Volt motor for 240 Volt service.
From your 208 Volt statement I will assume that you are in North America. Your possible voltage options would be:
1> In Canada, A legacy delta system at 220 V that is 60 or 75 or more years old. Not likely.
2> A legacy 230 Volt delta system (Open or full delta) that is about 50 years old. Still not likely in Canada. I understand that delta was more used in the US but still not common anymore.
3> Most likely by far, you have another 120/208 volt system and the person reporting the voltage doesn't know the difference between 208V, 220V and 240V. This is more common than many people realize.
Check your system voltage first hand. If you do need to adjust the voltage, report the actual nominal voltage and the motor spec's and we can supply economical suggestions.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

(OP)
We are in Vancouver, Canada.  The building is no more than 30 years old.

The nameplate on the machine is 208V 3 phase, 20/24.5A, 60Hz, 5/6Kw.

How can I find out the voltage at the plant?

Stefan
 

RE: Meat Grinder with 208V 3 Phase motor

Use a multimeter (preferably at the motor terminals) or see the panel meter.  

Muthu
www.edison.co.in

RE: Meat Grinder with 208V 3 Phase motor

Vancouver is and was 120:208 Volts. Use a multimeter between two receptacles on different phases. If your area was rural 30 years ago, you may have an open delta at 240 Volts but I strongly doubt it.  

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

Most likely, the motor is no different, people do make special 200V motors, but because 208V is so close to being within the +- 10% tolerances for 230V, most OEM don't bother using them. In fact the nameplate having two current ratings indicates to me that this is probably a "208-230V" motor; the higher current is the current draw at 208V, the lower being the current at 230V. What they sometimes do is wind the motor for 220V and add a little extra iron, figuring that is a middle ground compromise between 208 and 240V supply systems; in other words, they essentially make is a "230V +-15%" motor without calling it that.

What your OEM probably did was select or set your motor overload relays for the 208V current values and if you run it at 230V, they will allow too much current to flow to your motor in case of an overload, risking damage. It may be that all you need do is fix that issue.


"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln  
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies  

RE: Meat Grinder with 208V 3 Phase motor

(OP)
thank you everybody for your info!

jraef:  I think you are correct, because they did not change the motor, they stated that they were going to "set" the electric system to the voltage we requested.  There is a sticker from the dealer inside on one of the electrical boxes.  Could I get my electrician to change these relays?  Or do they just need to be switched?

Thank you!!

RE: Meat Grinder with 208V 3 Phase motor

Depends on the relay. Some have adjustable dials that you set for the FLA, some have replaceable "heater elements" that you select from a chart provided by each manufacturer. I have no way to know which one you have unless you post a part number or picture of the motor controller. If it's a soft starter, it may need reprogramming. If it's a VFD, you may not have to do a thing.


"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln  
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies  

RE: Meat Grinder with 208V 3 Phase motor

In Vancouver Canada, I SERIOUSLY DOUBT THAT YOU HAVE 220 VOLTS THREE PHASE. I worked in Vancouver for years and never saw 220 Volts three phase and never heard it mentioned seriously.
If you do have 220 Volts three phase I'd like to hear about it. It will be so rare that I would go out of my way to see it the next time I go through Vancouver.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

(OP)
I'm sorry Waross, I made a mistake...it is 240V 3 phase.  At least according to the panel.  Does this sound correct?

Thank you for your info!


It's actually port moody if that makes a difference, ahahha

RE: Meat Grinder with 208V 3 Phase motor

NO. The Frazer Valley is all served by BCHPA (Unless they have changed their name) 120:208Volt wye has been their standard for decades. Although 120:240Volt four wire delta systems are common in some areas of the US, they are unheard of in BCHPA territory. 240 Volt rated panels are used for 208 Volt service. Try a multimeter.  

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

I agree with Bill. One standard 3-phase building service in North America would be 120V line-to-neutral and 208V line-to-line unless you run into an old power system in certain areas of the continent. This is done so a standard 3-phase panel can provide power to both 120VAC single phase loads and 208VAC 3-phase loads.

The panels will be rated and tagged that it is rate for 240VAC, likely due to a few reasons, one being a very similar panel design for 120V/240V single phase services which means the same UL/CSA listings for both version.

So, until you measure the service with a meter don't believe the voltage it "might" be.

If the voltage actually is 240VAC, then you likely have to change the control power transformer from a 208V to 240V primary as well as reset the motor overload relay to the new motor FLA rating, 20A instead of 24.5A.
 

RE: Meat Grinder with 208V 3 Phase motor

(OP)
Now the only problem is I have a bunch of other machinery imported from the US that is 240V three phase.

the previous tenant in the building just plugged everything in without regard for voltage....obviously this is a mistake.

RE: Meat Grinder with 208V 3 Phase motor

How about you start measuring the actual system voltage and we go from there ?

Muthu
www.edison.co.in

RE: Meat Grinder with 208V 3 Phase motor


I thought I have seen on this site and elsewhere that it was not advisable to run a 208V motor on a 240V system since 240V is outside the 10% tolerence.  Even on a 230V system a 208V motor is right at 10% and any increase in the system voltage could lead to issues.  Is this a case only when we are dealing with a 208V rated motor and not one rated 208-230V as mentioned in this post?

I guess the fact that is has this 208-230V rating, it can handle anywhere in this range as well as a 240V system as others have mentioned?

RE: Meat Grinder with 208V 3 Phase motor

Hi Rockman;
It was common practice for many years to run 230V rated motors on 20 Volts. In more recent years, the design and construction of motors has become tighter and so dual rated (208:230V) and 200Volt rated motors have come on the market.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

Bill, you need to get the 8 key fixed.

RE: Meat Grinder with 208V 3 Phase motor

I'm saving for a new laptop. In the meantime, when I get home, I will be looking for an external keyboard to use.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

I meant to add a winky smile but hit submit too soon, but your keyboard leaves you making some strange statements about voltages, 230V motors on 20V indeed.  winky smile

RE: Meat Grinder with 208V 3 Phase motor

Guilty as charged! No offense taken.  

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

I have a PC keyboard at home that will frequently stop accepting the "i" keystrokes, just for a while, then it works fine again as soon as I think about junking it. Drives me crazy, reminds me of a Monty Python sketch where the guy couldn't say the letter B.


"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln  
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies  

RE: Meat Grinder with 208V 3 Phase motor

(OP)
It's 240V three phase as stated before.   

RE: Meat Grinder with 208V 3 Phase motor

How did you determine the voltage?
An anecdote;
Five or six yeas ago, I was living in an apartment building served by 120:208 Volts. The building manager was a retired industrial electrician. His office was on the second floor and just outside his office window was the three phase transformer bank.
I mentioned something about 208 Volts one day and he contradicted me. Like millions or other people living in apartment buildings, he had always assumed that the residential voltage was 120:240 Volts. He was a little embarrassed when I checked with a meter and showed him 208 Volts.
He was a competent electrician, but he had followed the common assumption on residential voltages.
To check the voltage at the receptacles, you have to check between two receptacles on different phases.
Does Port Moody have its own electric utility or are you on BC Hydro and Power?
 

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

240 Volts, three phase is so rare in the Vancouver area that I phoned BCHPA to seen what they had (From Central America!). I talked to a younger engineer who told me that it has been a long time since 240 volt three phase was installed on their system but there were still legacy delta 240 Volt installations on their system.
So 240 Volts is possible.
Have you measured the voltage with a meter?
You should be aware that if it is 240 Volts three phase the odds are overwhelming that it will be a four wire delta with a "Wild leg".
If so, your voltages to ground from the three phases will be, 120V, 120V, and 208V.
You should be aware of this. Normally only three phase loads are connected to the wild leg. Often every third breaker will be missing or not used in the part of the panel feeding the 120V loads.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

If you have a receptacle for an electric range or clothes drier that is a good place to check the voltage.  

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

(OP)
Hi Guys.  The voltage was checked with a meter at the panel mains.  Line to line line to neutral all 240V.

Apparently the building WAS 208V 3 phase but a cabinet maker moved in and requested 240V from the pole.  All the old switches say 208V.

Mystery solved.  Now we need a transformer for a couple machines.  We need one for a 6.5A 3ph 208V machine.  2.5kva?


 

RE: Meat Grinder with 208V 3 Phase motor

Bill -- You got me checking the supply to my own house (in California). 120V phase-to-neutral, 240V phase-to-phase. So not 2 phases of a 3-phase supply.

I believe this is called "split-phase" supply. Wikipedia says this is used "in the U.S. and parts of Canada and Latin America". But I guess not in Vancouver.

Curt Wilson
Delta Tau Data Systems

RE: Meat Grinder with 208V 3 Phase motor

"Line to line line to neutral all 240V."

What does that mean ?

Muthu
www.edison.co.in

RE: Meat Grinder with 208V 3 Phase motor

(OP)
edison123 sorry for the confusion I'm not too familiar with all this stuff.

I watched the electrician test it at the panel.  There were three leads going into the panel, and he tested between the two solid colored ones, and between the solid color and the striped cable.  All were 240V

 

RE: Meat Grinder with 208V 3 Phase motor

Then none of them were the neutral.  There is no possible 3-phase system where you have 240V both line-line and line-neutral unless it is a corner grounded 240V system and that would be a code violation in the US, don't know about Canada.

RE: Meat Grinder with 208V 3 Phase motor

(OP)
So what are my options?

I know I need a transformer but can someone show me one online that I could use?

The electrician told me to go get one over 2500 VA.

Basically I need to go from the 240V to 208V for 6.5 amps current.


THANKS EVERYBODY FOR ALL YOUR HELP!!!

 

RE: Meat Grinder with 208V 3 Phase motor

As I said in the start, run the motor as it is and note the load current. If it doesn't exceed the rated, you're good to go. If it is overloaded or overheating or fails, get the motor rewound to the actual supply voltage.

Adding a transformer is another source of loss and another potential source of failure.

Muthu
www.edison.co.in

RE: Meat Grinder with 208V 3 Phase motor

(OP)
The only problem is I have another machine that is to run on 208 as well, and the manufacturer will only honor the warranty if it is connected to the correct voltage.

Any suggestions for this situation?

Thanks again edison123 you, and everybody else on these forums have been great helps...and have sparked my interest in this topic.

Thank you so much.

RE: Meat Grinder with 208V 3 Phase motor

You need a pair of buck boost rated 240:36 Volt transformers.
 

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

Sorry, hit submit too soon.
With an auto transformer connection the magic of multiplication works for you.
The ratio of a 240:36V transformer is 6.667:1, call it 7:1.
The 36 Volt winding must carry the full 6.5 amps plus 1/7th to excite the 240 Volt winding.
Round it off to 7.5 amps.
7.5 Amps times 36 Volts equals 270 Volt Amps. Nearest size is 500 Volt Amps.
You need two 500 KVA, 240:36 Volt transformers that are buck/boost rated.
240V + 36V = 276V
276V /240V = 1.15
240V / 1.15 = 208.7 Volts
You will use an open delta auto transformer connection.
You may connect the transformers between the motor contactor and the motor overload devices. The motor will be protected and the transformer will only be energized when the motor is being used.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

(OP)
The 220V machine manufacturer says that 240V will not work.  That it is too high even though it is within the 10%.

Is there any way we can transform 240V to 220V?  for 6.5Amps draw?

Thank you for your help BIll.

If you are ever in BC you should stop by

www.moccia.ca

RE: Meat Grinder with 208V 3 Phase motor

Same solution, different transformers.
Buck boost rated 240:24 volt in open delta auto transformer configuration will drop 240 Volts to 218 Volts. Two transformers, 500VA each.
We used to service a plant that was part 480 Volts and part 600 volts.
The main service had a pair of auto transformers to drop the 600V to 480V. There was always machinery being moved, often from the 600V area to the 480V area or vice versa. We used a pair of small dry type transformers at each motor that needed a voltage adjustment.
I have done this before and it works well. It saves a lot on transformer costs.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

Bill

Do you have a schematic showing how these transformers would be connected?

RE: Meat Grinder with 208V 3 Phase motor

(OP)
There is no neutral.  The electrician was very surprised to see this...said he has only seen it once before (240 3ph no neutral)...years ago at a sawmill in quebec.


 

RE: Meat Grinder with 208V 3 Phase motor

(OP)
I just don't know if it is in open delta or wye...how can I find out?

RE: Meat Grinder with 208V 3 Phase motor

I just don't know if it is in open delta or wye...how can I find out?
It doesn't matter if there is no neutral, but look at the transformers. If the secondaries appear to be connected in series it's delta.
That's great, jraef. I blew the size calculation. You can go down to 150 VA x 2. That's a lot cheaper than the 2500 Va your electrician wanted to install.
Back to wye or delta. With a three transformer bank, wye will have one secondary terminal of each transformer connected together and a phase conductor from the other terminal of each transformer. Delta secondaries will be connected in a series ring with a phase conductor taken from each jumper from one transformer to the next. In some cases, two phase conductors may be physically connected to opposite terminals of the same transformer, but even so there will be one phase conductor from each jumper.
With wye, the common terminal is the neutral or the grounded conductor.
With a delta bank, the center terminal of a 120:240V transformer may be used to ground the system.
But, if there is no neutral, it doesn't matter.
Probably delta. A 240 Volt wye requires 139 Volt transformers. They are not common.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

I'd think it is delta. It would have been a 208V/120V service if it was Y connected. Utility probably just used 3 x 120V:240V single phase transformers connected delta. Otherwise, they would have needed special transformers and besides, the 139V line to neutral is useless so why install it?

If they used 3 x 120V:240V transformers they they might have fed a 120V panel from the same service transformers so look for a lighting panel that is fed from the same service. If so, the neutral is the middle point of one of the delta connected transformers. It was mentioned above. If you measured each phase to ground you would read 120V, 120V and 208V for this type of connection.
 

RE: Meat Grinder with 208V 3 Phase motor

"The 220V machine manufacturer says that 240V will not work."

Unless it is a very old piece of equipment (1960s or before), this seems suspect. And even then, the 220 rating was intended for both 208 and 240 V services. 220 does not match any modern standard nominal utilization or service voltage. ANSI C84 utilization voltages are 200 or 230, corresponding to service voltages of 208 and 240. Applying a little too much voltage is generally better than too little, since motors will draw less current and run cooler and more efficiently at higher voltage. I would try it without the buck transformer.    

RE: Meat Grinder with 208V 3 Phase motor

You have three choices if the nameplate says 220 volts.
1> It's over 50 years old.
2> It is an older (pre-harmonization) IEC motor for 50 Hz.
3> It was made in China.
Check to see if it is 50 Hz.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

(OP)
It's a japanese machine, new, and they said it will RUN on 240 but develops vibration.  It is an encrusting and forming machine so apparently that vibration causes it not to work properly.

RE: Meat Grinder with 208V 3 Phase motor

So return it and ask for a machine suitable for use in North America.

RE: Meat Grinder with 208V 3 Phase motor

Would a VFD be a good option here?  Can you set the maximum voltage output lower than the input from the line?  

It sounds as if a frequency difference might be part of the problem with the machine vibrating/not operating properly.  I cannot think of any reason it would tend to vibrate when exposed to higher than normal voltage.   

RE: Meat Grinder with 208V 3 Phase motor

Take the motor to a motor repair shop and ask them run it at voltages from 200 to 250 V and measure the corresponding no-load currents and vibrations. If either the current or the vibration increases drastically, time for a new motor rated for your measured site voltage, not some nominal voltage.

I recently had a case where a 4.5 KW motor whose vibration  would increase with the voltage (via an stepless auto). I located the problem to the shaft loose in the rotor core to the tune of 0.15 mm. With a new shaft with proper fit, the vibrations went away.

It's time you brought in a good motor repair shop.  

Muthu
www.edison.co.in

RE: Meat Grinder with 208V 3 Phase motor

Excellent suggestion ccjersey. You may have to add some filtering if the motor is not invertor rated.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

Surbani did not say the motor will vibrate, he said the machine will. My assumption is that the higher speed (lower slip) at the higher voltage will cause the unbalanced mechanical load to cause excessive vibration in the machine. Perhaps the frequency adds to this problem as well.

Again I say he needs a machine (including the proper gearing) suitable for NA voltage and frequency. A VFD is a possible solution, but why should he need to pay extra to make a new piece of equipment work?

RE: Meat Grinder with 208V 3 Phase motor

(OP)
edison123:  the problem is the machine has five motors not one.  i have attached electrical drawings.

stevenal:  I agree with you that the machine should be suitable for NA freq and V, but it is at 60hz and they don't seem to understand.  they say that 208V will work, but 220 is ideal.  there is a hell of a language barrier even though they are only in irvine, ca.  please see the attached drawings, and accept my thanks.

 

RE: Meat Grinder with 208V 3 Phase motor

That's a very wise move, showing the diagrams.

There are five motors. All are said to be 200 V.

Does that compute? Do the motor nameplates say the same thing?

Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

RE: Meat Grinder with 208V 3 Phase motor

And five inverters (VFDs). Seems like they should be settable for the higher voltage, or could be replaced with ones that can operate at that voltage.

RE: Meat Grinder with 208V 3 Phase motor

Going by your first attachment, these motors are VFD driven ?  

Muthu
www.edison.co.in

RE: Meat Grinder with 208V 3 Phase motor

(OP)
Hi guys thanks for the replies.  I'm going to try to check the nameplate voltage this afternoon.  If I do get a transformer should I get an auto or isolation?  This company beaverelectrical.com said they could make a custom transformer for 240 to 220.  But wanted to know auto or isolation.  Any suggestions?   Thanks again everybody.


What's a vfd?

RE: Meat Grinder with 208V 3 Phase motor

A Variable Frequency Drive. Used to supply motors if you need to run at other speed or voltage than the nameplate says.

Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

RE: Meat Grinder with 208V 3 Phase motor

(OP)
They also suggested that harmonics could be a problem with the transformer.  Any suggestions?

RE: Meat Grinder with 208V 3 Phase motor

If there are VFDs, chances are that you can stop ask all these questions. VFDs usually take care of it all. Get help from a professional if you feel unsecure.

Re harmonics. That is usually not a problem with VFDs. But you will certainly not need them.

The adjustment that the supplier did was an adjustment to grid voltage. It can be done again if you have another grid voltage now.

I think that it is about time to close this chatbox. Even if we are nice guys that like to help, we get tired when threads go on and on without getting anywhere.

Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

RE: Meat Grinder with 208V 3 Phase motor

(OP)
you're right youve all been great guys.

thank you for all your help and sorry for the thread going on and on.

I have one electrician hooking everything up, as well as a guy at the transformer company that is an electrical engineer.

I don't know who else to hire.

Stefan

RE: Meat Grinder with 208V 3 Phase motor

Welcome back with a report how it all went!

Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

RE: Meat Grinder with 208V 3 Phase motor

If that is the Beaver electric that I remember, they were a competent, reputable firm.
I am sure that they will give you what you need at a fair price.
Beaver was one of a couple of motor shops in Vancouver that I had good luck with, years ago.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Meat Grinder with 208V 3 Phase motor

Gunnar - The last nail. In future, if anyone comes here with a 'voltage problem', our first question should be, are there any bloody VFD's in the system ?

Muthu
www.edison.co.in

RE: Meat Grinder with 208V 3 Phase motor

(OP)
the VFD's are rated up to 240V so it is on the cusp.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources