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KB2VXA > INFO 23.07.02 21:30l 43 Lines 1551 Bytes #999 (0) @ WW
BID : 52477_WT3V
Read: DB0FHN GUEST
Subj: Re: ZL1AWA > ELEC. PWR
Path: DB0FHN<DB0ZWI<DB0HDF<DB0ERF<DB0ROF<DB0CWS<DB0ZDF<DB0LJ<LX0HST<HA3PG<
WB7AWL<N7FSP<KB6LE<KB6LE<W0RLI<W7LT<N7QDN<N7QDN<K1UOL<K1UOL<K2PUT<
WA2SNA<KC2COJ<WT3V
Sent: 020722/0222Z @:WT3V.#JS.NJ.USA.NOAM #:52477 [Lakehurst] $:52477_WT3V
From: KB2VXA@WT3V.#JS.NJ.USA.NOAM
To : INFO@WW
Hello Sandy and Zedders,
Ah, go ahead and read it even if you're in the UK. (;->)
Seems to me you have pretty much the US power distribution system with
two minor differences.
First is the voltage as expected, but what's the frequency Kenneth?
The other is how the transformers are connected to homes. Here, a 4800V
trio (between phases) is run and instead of the wye or star as it is
sometimes called being taken off the secondary, it's taken off the
primaries. A single phase transformer primary is connected from phase to
neutral and the 230V center tapped secondary feeds typically 4 to 6 homes
from a 500A winding. 230 is taken between the outer ungrounded legs and
115V from an outer leg to grounded center tap, neutral. In a 230V
appliance, the case is connected to neutral for ground fault protection
and a ganged breaker employed to shut down the circuit entirely. A short
to ground trips one side and it mechanically switches the other.
The transformers are staggered on the phases to balance the load instead
of staggering the seconaries as you do. Same difference. (;->)
In residential light load areas, a single primary feeder is connected to
one phase in the main trio and those are also staggered.
***********************************************
LID: Wants to work ground wave, buries antenna.
***********************************************
73 de Warren, KB2VXA
e-mail: kb2vxa@juno.com
Message timed: 02:24 on 22 Jul 02 UTC
[ Received via HF CLOVER at KB6LE ]
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