| Is there a North American standard voltage between 600 and 2400? I believe
| 1320V is a standard voltage, but is it used much?
There is 1000Y/577 that has traditionally been used only in mine operations.
Manufacturers like Square-D and Cutler-Hammer make some equipment rated for
that voltage system.
A few years ago I was looking through service guides for various power
companies in the USA. I found one that offered a 831Y/480 service.
I'm guessing the only use of it would be 480 volt loads wired L-N, such
as specially wired motors, or street lighting. Circuit breakers for it
would probably have to be the ones for 1000Y/577.
| Phil Howard KA9WGN (ka9wgn.ham.org) / Do not send to the address below |
I think fort he US and for premise wiring systems covered by the NEC
the following applies.
Voltage, Nominal. A nominal value assigned to a circuit or
system for the purpose of conveniently designating its voltage
class (e.g., 120/240 volts, 480Y/277 volts, 600 volts).
The actual voltage at which a circuit operates can vary from
the nominal within a range that permits satisfactory operation
FPN: See ANSI C84.1-1995, Voltage Ratings for Electric
Power Systems and Equipment (60 Hz).
There are many other systems. For example, railway, ships, mines,
autombiles, and aircraft equipment to name a few.
Yes, 1000V is used on some underground mining equipment, as well as
1500V. Both of these are very specialized and not considered common
however. Medium voltage is considered to be anything 1000V and over,
up to 25kV, but the first jump in common utilization is 2400V
By the way, you said 1320V, but there is no such thing. I think you
dropped a zero off of 13,200V, which is a common distribution voltage.
On 10 Oct 2006 10:23:07 GMT, email@example.com wrote:
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