Home |
Search |
Today's Posts |
|
Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
|
LinkBack | Thread Tools | Display Modes |
#1
|
|||
|
|||
Phase converter puzzle!
Ignoramus9179 wrote:
I built a self starting phase converter with a 10 HP idler and two 92 mF capacitors. It works great and starts in under 2 seconds. I also have a very similar looking Century 7.5HP motor. They 10 HP and 7.5 HP look similar. This 7.5 HP motor would NOT spin up from two other capacitors. If I wire it with three capacitors (I have 5 total, 2 already used in the main phase converter), it would spin up, but it takes it about 5 seconds to do so and it warms up appreciably. What gives? Another tidbit is that the 7.5 HP motor starts just fine from 3 phase output of my phase converter. I do not think that it is a bad motor. Maybe some caps out of these three are in bad condition. i The inductance of the winding is different. The motor works. Different caps than those used would work. That is why the caps are approx and to adjust... Remember, "we" are finding a way to get around the normal ways. Different motors don't have to have the same specs, just have the power and voltage ratings listed on the plate. Martin -- Martin Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net NRA LOH, NRA Life NRA Second Amendment Task Force Charter Founder ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
My $45 homemade 10 HP phase converter is WORKING!!! | Metalworking | |||
My $45 homemade 10 HP phase converter is WORKING!!! | Home Repair | |||
Worked on output wiring and enclosure today... My $45 homemade 10 HP phase converter is WORKING!!! | Metalworking | |||
My $45 homemade 10 HP phase converter is WORKING!!! | Home Repair | |||
Motor capacitor sizing? | Metalworking |