What is Power Factor Correction in HMIs

[Hal Smith]

Here's a sort of poor man's three phase rig, or maybe two and a half phase:

 

http://www.metalwebnews.com/howto/ph-conv/ph-conv.html

 

What do you think of it?

 

I think the self starting design is very close to how my client's Phasemaster works. When my client took over the station the transmitter building was a trash heap inside and a lot of the trash was dead Phasemaster electrolytic capacitors. The original installation design was overloading the Phasemaster, I replaced a three phase driver transmitter with a modern single phase solid-state transmitter and modified/upgraded the amplifier so the only thing on three phase power is the high power plate transformer itself. With a lot less three phase load now I don't think the pile of dead capacitors is going to regrow itself quite as fast as the original was created.

[JD Hartman]

Here's a sort of poor man's three phase rig, or maybe two and a half phase:

 

http://www.metalwebnews.com/howto/ph-conv/ph-conv.html

 

What do you think of it?

 

 

 

 

 

 

-- J.S.

 

Just fine, a workable design. Most RPC are based on the Fitch-Williams self starting design. PFC caps being optional and with multiple machines, the amount of caps in the circuit needs to be altered depending on what machines are running.

Edited January 15, 2010 by JD Hartman