Hello from San Diego:
Chris Dupres commented that the committee that wrote IEC 1000-3-2 was comprised mostly of members from the European power generating industry. True. Others, especially ITE industry members, became aware of the work and joined the committee. However, by this time the work was done and the ITE inputs were largely ignored. Likewise for the high- power audio industry. As Chris said, the principle was set that any problems with the mains supply is the users, not the makers. Craig Britland commented that the harmonic requirements serves the consumer by providing an efficient power distribution system. This is desirable. However, my comment was that the power generating industry assumes ownership of efficiency due to linear phase correction by strategically installing capacitors on the power lines. But, for non-linear phase correction, the industry (in Europe) forces the efficiency ownership onto the consumer. The power generating industry CAN correct for non-linear phase problems with strategically placed inductors (e.g., zig-zag transformers). And that is my point. On the one hand, the power generating industry assumes ownership of one kind of phase correction, but declines ownership of another kind of phase correction. This isn't exactly a customer-friendly kind of action. Instead, its more like Henry Ford, "You can have any color you want as long as it's black." Best regards, Rich ------------------------------------------------------------- Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group San Diego Division (SDD) Tel : 619 655 3329 16399 West Bernardo Drive FAX : 619 655 4979 San Diego, California 92127 e-mail: [email protected] -------------------------------------------------------------
