Capacitor start may have failed from:
bad capacitor
bad centrifugal switch mechanism
bad centrifugal switch contact(s)
Internal motor problem:
Motor bearings failed
Start winding insulation failure
Overload on output of motor
from gearbox problem
from load problem
Low voltage supply to motor...
A resister is frequently applied across the start capacitor terminals to reduce contact erosion when the relay opens. This is done more on motors that start frequently and have to operate reliably for long periods. Refrigeration compressors and submensible pumps are two applications where I...
Hardly seems likely to be the cause of the dead batteries. Any chance it is sending a lot more often for some reason? One thing you could do is test the state of charge of the two batteries next time they are dead. Of course if it's only one dead, it isn't likely it will even attempt to start...
Using a common neutral (the 5th wire in your case) can result in overloading that conductor since unbalanced current on both transformers Line-neutral loads will have to return to the 2 transformer bank on a single wire. Balanced line-neutral currents on each transformer do not return on the...
I would look at converting the supply transformers now and install new 3 phase compressors/motors. This thing is giving you warning!
Too big of a project? Then I see no reason not to use the 115 Volt single phase motors on both compressors assuming the existing transformer, starters and...
You'll need to register, but this is the place for that kind of question
http://www.smokstak.com/forum/forumdisplay.php?f=6
On the tank there is usually a manufacturing date. That would help date it unless it is a replacement motor. It can't be from before 1964, it's T frame motor instead of...
I have seen 4 batteries connected in a so called "series-parallel" arrangement.
This consisted of 2 pairs of 6 volt batteries, each pair connected in series for 12 volts and then the two series groups connected in parallel to supply 12 volts to the load (starter).
This was in 1970's heavy...
Wiring the 12 leads properly is only part of the process of reconnecting for different voltages.
You may/most likely also need to configure the voltage regulator/exciter supply/reference voltage sources for the higher voltage! Just depends on the design of the generator controls.
Be very...
If the lubricant doesn't work, then use a quick application of heat to the hub. If you take too long to get it hot, then the shaft will get hot and expand too.
It's very likely you can take off the cover on the opposite end of the motor and access the wiring. I don't know of any motor that is designed to be disassembled to reconnect for different voltages. The connections you need to make should be in an easily accessable connection box somewhere on...
I hope there is some kind of market for used meters.
Our local REA cooperative is replacing all theirs with new "smart" meters that will eliminate reading the meter among other things. Right now that project is on hold, all the crews are in other areas repairing damage done by the recent...
I would if at all possible use a single generator to backup the whole facility, matching whatever the utility voltage/phase supply is. If they really want something just to backup those machines, and to have it automatic, I would guess that the cost of installing an automatic transfer switch in...
OK, look at this logically......
Your compressor can handle a certain amount of refrigerant per hour while on high speed. You charge the system and clear up the sight glass. The sight glass gets clear because the compressor has accumulated enough liquid refrigerant in the condenser and line...
In my limited experience, phase monitor units are not very robust. The ones I have used frequently fail when nothing else has been damaged. I would not put much emphasis on what caused them to fail since it seems to take very little.
I do think it's unlikely that they failed before the...
A 3 phase motor used strictly as a phase converter needs the capacitor(s) only to get it started. If it can be spun up with a cord wound around a pulley for example, it doesn't have to have capacitors to regenerate the 3rd phase.
A 3 phase motor used on single phase supply can do more work if...
Lots of manufacturers make them. Rain tight versions are commonly used for something like a well or other small load which has no conceivable potential for "growth". Some have 2 slots, some 4.
I would think any electrical supply has some on the shelf.
With the shaft getting slightly longer when the rotor temperature comes up, something has to allow axial movement. Usually the bearing is allowed to slide in the end bell and perhaps a spring washer used to ensure preload on the bearing.
If the bearing seizes in the end bell, then every...
If you mean motors rated 208-230/460, the wiring plan is either a series delta or series Y for the high voltage and a 2 parallel delta or 2 parallel Y for the low voltages.
In either the delta or Y motors, there are permanent splices inside the stator which allow the series/parallel...
