-------- In message <[email protected]>, jimlux writes:
>In EU, where 240V is the default line voltage, I wonder what the 3 phase >distribution is? Is it 415 delta / 240 star 230V actually, and yes, it is universally 400 delta / 230 star. That's also why you only ever see an auto-tranformer if somebody imported gear (typically computers) from USA. The most important difference from US is that co-poling of LV and MV has almost never been practiced over here, so transients almost only happen in thunder. For the same reason MV (typically 10kV) to LV transformers are typically larger than the polemounted "buckets" used in USA. Her in DK MV/LV's are usually around 1MW, and they will supply about a square kilometer of town or ten square kilometers of rural landscape. An advantage of the large number of installations per trafo is that load is even across the three phases, so you can run the transformer closer to spec than any utility in USA would be happy with. Protective grounding differs, between countries and in countries, depending on how hard it is to drive a good PE electrode (DK: Trivial, NO: Forget it) On the flip side, while we have agreed on the voltage, there are 13 different national standards for the plugs and sockets on consumer-stuff... -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
