1500 watt COTEK

[inetdog]

You connect theis to your Battery. plus and minus. for a 24 volt BATTERY.
Here is the part that YOU missed. the inverter [unit] has its OWN ....ELECTRIC MOTOR .... that TURNS what i think is an alternator.

I have seen a lot of motor-generator sets that work the way you describe, and I have seen inverters that are no more than a 12 volt vibrator driving a transformer, maybe with a little filtering.
But I have never seen a motor-generator, even one that goes from DC to AC, called an inverter.

Another example used to be common in telco service. It was a DC motor that drove an alternator that produced the low frequency 90V AC that was used to ring the telephones. That was called, logically enough, a ringing machine. It also included the interrupters to provide different phase on and off connections to provide the ringing cadence, driven by a reduction gear.
Similar motor-generators provided the dial tone frequency also.

[conntaxman]

It is probably an electric generator, similar to this make

http://www.alternatorstarter.com/redi-line_dc_to_ac_electric_generators.php

they show up on Ebay from time to time

I wouldn't pay a lot for it as you never know the number of hour on it and just like
any other electric motor / generator you never know the shape the bearings and coils
are in unless you take it apart and check them

Legacy that sounds just like what the person told me. Well that cant be a Eff. as a reg inverter, to me to run a motor is a big waste of power.

[SunEagle]

It is probably an electric generator, similar to this make

http://www.alternatorstarter.com/redi-line_dc_to_ac_electric_generators.php

they show up on Ebay from time to time

I wouldn't pay a lot for it as you never know the number of hour on it and just like
any other electric motor / generator you never know the shape the bearings and coils
are in unless you take it apart and check them

Well that certainly looks like what is being described using a DC motor to run an AC generator. What bothers me is that there is no reference to Honeywell or the word "inverter" in the description of the Redi-Line device which makes me leery of the seller's intentions.

[conntaxman]

It is probably an electric generator, similar to this make

http://www.alternatorstarter.com/redi-line_dc_to_ac_electric_generators.php

they show up on Ebay from time to time

I wouldn't pay a lot for it as you never know the number of hour on it and just like
any other electric motor / generator you never know the shape the bearings and coils
are in unless you take it apart and check them

...................
I got the info for that motor/alt.
Honeywell redi-line DA12L. Motor generator.

http://store.phonetx.com/32082000.html

Now i dont know if I want it or not. It sure wouldn't be good to run a computer, I don't think.The way it starts on demand. But one good thing about it, when their isnt anything drawing it dosent use ANY ele from the batteries like most inverters.
John
It might be good to hoop up to my Boiler [heat for house] and well pump.

[SunEagle]

...................
I got the info for that motor/alt.
Honeywell redi-line DA12L. Motor generator.

http://store.phonetx.com/32082000.html

Now i dont know if I want it or not. It sure wouldn't be good to run a computer, I don't think.The way it starts on demand. But one good thing about it, when their isnt anything drawing it dosent use ANY ele from the batteries like most inverters.
John
It might be good to hoop up to my Boiler [heat for house] and well pump.

I guess I was in error. While that link did not have the word Honeywell anywhere in it I did find a few older models of the Redi-line with the Honeywell name on it. There were more Redi-line products that had the Pacific Scientific name on it.

My guess is that Redi-Line made the product and then had Pacific and Honeywell market it.

[inetdog]

The way it starts on demand. But one good thing about it, when their isnt anything drawing it dosent use ANY ele from the batteries like most inverters.

Take that with a small grain of salt. The Advanced Demand Start system has to be able to detect that the load has been plugged in or switched on somehow. Since there is no electronic inverter as part of the assembly, it would have to either spin up the m/g periodically to check or else try to send DC over the wiring to see if a switch has been closed.
This could end up not being any better than the autostart mode of a conventional inverter in terms of battery life.

[conntaxman]

Take that with a small grain of salt. The Advanced Demand Start system has to be able to detect that the load has been plugged in or switched on somehow. Since there is no electronic inverter as part of the assembly, it would have to either spin up the m/g periodically to check or else try to send DC over the wiring to see if a switch has been closed.
This could end up not being any better than the autostart mode of a conventional inverter in terms of battery life.

--------
sunegale
here is what the guy emailed me" Honeywell redi-line DA12L. Motor generator. 12volt in 120 out 1600 watts"
I didn't go look at it yet.All i'll offer him is $75.00 and see if he'll let it go for that.
John

[inetdog]

--------
sunegale
here is what the guy emailed me" Honeywell redi-line DA12L. Motor generator. 12volt in 120 out 1600 watts"
I didn't go look at it yet.All i'll offer him is $75.00 and see if he'll let it go for that.
John

I took another look at the DA12 data on their website. The output AC is 65Hz +/- 5%. Make sure that will not be a problem for any motors you want to drive.

[conntaxman]

I took another look at the DA12 data on their website. The output AC is 65Hz +/- 5%. Make sure that will not be a problem for any motors you want to drive.

-------
interdog, the motors are on my Boiler [heating sys] burner and circulator, and a 220 well pump.For the well pump I had bought a large transformer from a companty awhile back,it will supply enough amp and it changes the 120ac input to 220ac output.
I don't know if the 65 hz will hurt the motors. I know they are calling for 60hz
John

[SunEagle]

-------
interdog, the motors are on my Boiler [heating sys] burner and circulator, and a 220 well pump.For the well pump I had bought a large transformer from a companty awhile back,it will supply enough amp and it changes the 120ac input to 220ac output.
I don't know if the 65 hz will hurt the motors. I know they are calling for 60hz
John

A lot of motors that have a 60hz rating can be pushed to higher frequencies even as high as 120hz for short periods. Varying the frequency on motors to change their speed is common. This is done using a Variable Frequency Drive. The big issue is at the low speed end. Going slower than 30hz can cause the motor to build up heat. The fan that is attached to the motor shaft no longer turns fast enough to provide cooling so over heating can result.

Unless the tolerance on your motor is real tight I don't believe the 65hz will hurt it.

[inetdog]

-------
interdog, the motors are on my Boiler [heating sys] burner and circulator, and a 220 well pump.For the well pump I had bought a large transformer from a companty awhile back,it will supply enough amp and it changes the 120ac input to 220ac output.
I don't know if the 65 hz will hurt the motors. I know they are calling for 60hz
John

For a pump or fan motor, running at 65 instead of 60 Hz will be a an 8% speed difference but potentially a 27% power difference (goes as speed cubed.)
For some applications this could overload a tightly specified motor or cause too much air noise in an air-circulation heating system. For those specific applications, changing the fan belt pulley ratio may be necessary.
When you add the worst case +5% tolerance to that, you get a 13% speed increase and a 44% power increase. That will be bad for just about any motor which is normally fully loaded.

[SunEagle]

For a pump or fan motor, running at 65 instead of 60 Hz will be a an 8% speed difference but potentially a 27% power difference (goes as speed cubed.)
For some applications this could overload a tightly specified motor or cause too much air noise in an air-circulation heating system. For those specific applications, changing the fan belt pulley ratio may be necessary.
When you add the worst case +5% tolerance to that, you get a 13% speed increase and a 44% power increase. That will be bad for just about any motor which is normally fully loaded.

I understand your concern about the motor possibly being over loaded at the higher speed but most motors are not sized for the exact work load. Usually the motor is over sized which is less efficient and creates a poorer power factor.

A lot of Industrial organizations have been changing the fixed speed pumps and fans on their cooling towers over to variable frequency driven. While the main reason is to slow down the motors to the correct load so it saves on energy there are times that speeding them up will result in a little more cooling.

[Sunking]

...................
I got the info for that motor/alt.
Honeywell redi-line DA12L. Motor generator.
http://store.phonetx.com/32082000.html

I know what those are, a very antiquated UPS called Motor-Generator or M-G's for short. When used as a 50 or 60 Hz UPS Commercial power was supplied to Rectifiers. Rectifiers kept a large bank of batteries charged up and enough power to run a DC motor which turned a Generator to produce 50/60 Hz power to critical equipment. When commercial power failed the batteries ran the DC motor.

With that said most all of them in commercial use we used as a UPS as above with 1 major difference the generator produced 400 Hz power. They were mostly used in data center running the ole IBM Main Frame computers or auxiliary power on ships and aircraft. There are still som eold rust buckets ships that still use them.