Hi Carlos, Yes, many changes. Stainless wheels thinned out to pass more water and develop 25% more power (and more welding). High pressure low volumn governors. Static exciters. Scada -data aquisition. Digital relays. The new relaying is much better. Parts from all over the world. Just as you have learned all there is, the technology changes, the heads hurts! Your river with 20 units is five times the volumn of ours. We have to build multiple plants per river. Costs have become too high now, so they have gone to upgrading and conserving. Cheers, Ken west coast Canada ----- Original Message ----- From: "Carlos Marcano" To: Sent: Thursday, July 08, 2004 10:38 AM Subject: Re: [EE:] Harmonics in a Generator. De: Ken Reid >32 years with machines ranging in age from 70 years to 30 years. A lot of >change in the last two decades. Retired now Great, lot of experience! I have just begun here (6 months) and it4s been amazing. I have learned and seen so many things these last months. Here we have some old machines also, most Mitsubishis (804s), Canadian GE(804s) and three "antique" Westinghouse generators (from the 604s). We are involved in major overhauls at the turbines and gobernor systems and in the next couple of years we will work on the excitation systems. Regards, *Carlos* --Guri, Venezuela-- --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.716 / Virus Database: 472 - Release Date: 05/07/04 -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu