Something a little differant

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Mark Bullard

Well-Known Member
Joined
Jan 26, 2004
Messages
1,780
This is for all you electric boaters and others. Just got this in for repair yesterday. Do not know what's wrong with it. This motor belongs to the city of Huntsville, AL. This is one of four river pumps that pump water to the treatment plant for process of drinking water. It is 700 HP , 884 rpm/8 pole, 2300 volts ac. I will post more pictures as it comes down. 700.JPG700 name plate.JPG
 
Very cool Mark. What's that expression you like to say when David and I show up to a SAW event "Smells like money!"
One of these days I need to swing by your shop.
 
Fill my pool in a heartbeat. 🤣 What's up with the Spitfire wing in the background?😉
So you like my 100" Spitfire in the background. It has a 60cc engine with electric start. The only way to go with big motors and props like that.
 
This is for all you electric boaters and others. Just got this in for repair yesterday. Do not know what's wrong with it. This motor belongs to the city of Huntsville, AL. This is one of four river pumps that pump water to the treatment plant for process of drinking water. It is 700 HP , 884 rpm/8 pole, 2300 volts ac. I will post more pictures as it comes down. View attachment 279770View attachment 279771
And if the pumps need rebuilding you can send them to me. I’ll let you balance the impellers ... hehe Jeff Lutz
 
Thermally protected. Maybe they are burned out. Would be interesting to see. 2300volts is way bigger than anything I have to deal with.
Mike
 
Thermally protected. Maybe they are burned out. Would be interesting to see. 2300volts is way bigger than anything I have to deal with.
Mike
Yes Mike we have means to test up 4160 volts in house. Here are some pictures of a motor that we worked on site. Had to replace the thermistors on the windings. It has six of them watching the temperature of the motor when it is running. This motor drives a air-compressor and it do make a lot of air for their process. There is a picture of the compressor from the drive end of the motor. his motor is 8000 HP, 1200 rpm and 13,000volts ac. This is a Synchronous motor also it will run at synchronous speed because of it's wound rotor poles. Being that the motor is 1200 rpm means it is a 6 pole motor and KIMG0468.JPGKIMG0469.JPGKIMG0470.JPGKIMG0471.JPG will have 6 rotor poles with dc put on them thru rings. This motor could be turn by another source and it will generate power. This is how all power plants make electric that we use.
 
Mark, Do you have to use special HV rated thermistors that are optically isolated or protected by some other means?
I also want to see the Genset you have in your shop for testing these motors.
 
Glad to see your business is up and running Mark! I got a chance to visit Marks shop last year and it's impressive to say the least. Not only do they repair huge motors they also have a warehouse of replacement motors to minimize down time for customers who have a breakdown. Really cool operation.
 
Mark, Do you have to use special HV rated thermistors that are optically isolated or protected by some other means?
I also want to see the Genset you have in your shop for testing these motors.
Not needed on the thermistors. The coil insulation is so thick we just glue them in place outside the coils and run the wires out. We did slide the thermistors thru glass tubing as you can see on one of the pictures.
We have a 1200 kw generator driven by a 149 series V12 Detroit diesel. It has two super chargers and four turbo chargers. The 149 series is a 149 cubic inches per cylinder. this engine is set up to run about 2000hp @ 1800 rpm. But it sound like its running 3600 rpm because of it being a two stroke.
 
Not needed on the thermistors. The coil insulation is so thick we just glue them in place outside the coils and run the wires out. We did slide the thermistors thru glass tubing as you can see on one of the pictures.
We have a 1200 kw generator driven by a 149 series V12 Detroit diesel. It has two super chargers and four turbo chargers. The 149 series is a 149 cubic inches per cylinder. this engine is set up to run about 2000hp @ 1800 rpm. But it sound like its running 3600 rpm because of it being a two stroke.
I used to be a Generator Tech and it always sounded like it was about to run away when you started those things. Lot of air moving through the enclosure from the 6 foot cooling fan.
 
I've had the opportunity to be in the same room as the Detroit while running. Its a little intimidating to say the least.
 
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