Tropicalization, refers to treating the windings to inhibit fungus and mildew growth. It is a common requirement for electrical equipment that is shipped to remote tropical areas that will not be immediately energized. I seen some awful thick fungus growth on windings appear in just a couple...
Customers often ask for cooling time constant for our machine, where MULTILIN protection is used. The time constant should be defined as removing the heat to a level of 1/e (i.e. 36.8%)…or 63.2% total heat removed.
The temperature drops at an exponential rate. The time constant is based on...
How about the motor at Arnold Air Force base. Two 83,000HP coupled to two 60,000HP for a total of 286,000HP http://www.arnold.af.mil/shared/media/document/AFD-070131-089.pdf.
This high humidity environment most certainly requires space heaters. Also, per NEMA 20.29.3, salt-laden air and damp locations are considered as “Unusual Service Conditions”. Meaning that by not specifying space heaters for this area [AND using them!] could be considered has faux pas on the...
NEMA protects the user from such manufacturing errors. I suggest that your supplier read it.
Reference:
Section I GENERAL STANDARDS APPLYING TO ALL MACHINES
Part 4—DIMENSIONS, TOLERANCES, AND MOUNTING
…
4.9 TOLERANCES ON SHAFT EXTENSION DIAMETERS AND KEYSEATS
4.9.1 Shaft Extension Diameter...
Referring to IEEE 112-5.2.2.5
Briefly, this is a test designed to determine efficiency. But it can also be used to investigate “hot” conditions using shaft loading. Two machines are coupled together and connected to two separate power sources with the frequency of one of the sources being...
If you are still looking for another source, I suggest that you go ahead and give TECO/Westinghouse a shout. On a motor this size, they can do the back-to-back test using one of their 1000hp, 2pole production units that happens to be going done the line at the same time you need the test done. I...
Be careful which direction you choose to push the shaft out. That is because when the core laminations are stamped, the die produces a burr. When the core is stacked, the manufacture knows which side of the punching the burr is on and insures that the burrs are all going in the same direction...
The Westinghouse 5000, 5800 and 6800 frame series vertical motors used non-contact, labyrinth shaft seals. So there is no seal lip to wear out and no chamber vent to get clogged.
If you only notice the drips after the machine has just been shut down from a run but not when the machine has been...
I apologize for the long winded answer and the repeating of your original questions but felt it was the best way to respond and not forcing everybody to have to scroll up and down.
“This is an indoor 4kv vertical motor manufactured by Westinghouse with oil-lubricated upper and lower bearings “...
We use these. A little expensive for one time use.
http://www.martindaleco.com/html/CommutatorGrinders/CommutatorGrindingandTurningTools.htm
A comment about hooking up to a welder. Yes, it works but watch out for dangerous, blinding, flash over. Many years ago I watched a service engineer do...
For efficiency testing, IEEE 112, Method F uses the equivalent circuit of the induction motor to determine its performance from circuit parameters established by test measurements. This test provides acceptable accuracy for starting and running performance. It also should yield the most...
