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50 hz systems

50 hz systems

50 hz systems

(OP)
utility power source 380/220 vac, 3 phase, wyn 50 hz with neutral. Question-is the neutral normally grounded in countries outside of the USA, such as the middle east for this type of power.

RE: 50 hz systems

The Continental Europe had this as a standard for many years while the UK had 415/240 V 50 Hz. Europe now has "harmonized" voltages and has 400/230 V 50 Hz througout. All these systems have a grounded neutral (TN-C) with a few exceptions. Norway being one that I am aware about.

The Middle East has inherited the 380/220 V TN-C and it is very common. But there might be exceptions.

Consult http://kropla.com/electric2.htm and similar sites for more information.

Gunnar Englund
www.gke.org

RE: 50 hz systems

(OP)
Thanks for the information it gives me a better understanding of this system.

RE: 50 hz systems

Skogsgurra,

You're correct on the middle east, and at least one exception being Saudi.  Last time I was there, they were still using 220/127V 60Hz.

A little gee-whiz FYI...

http://kropla.com/electric2.htm

Eric

RE: 50 hz systems

Oops, sorry about that.  Was going to delete the link before posting. (redundant)

RE: 50 hz systems


To complete the answer to your question, you should be advised that in USA and Canada the most commom low voltage distribution level is 208/120 V, 60 Hz. The utility provides for each of their residential customers two phases and a neutral, and the residential wiring is designed such as the appliances are to be fed phase-to-phase (208 V) while the rest of the receptacles are phase-to-neutral (120 V).

RE: 50 hz systems

vic3fan, the vast majority of US and Canadian residential services are 120/240V; two phase conductors 240V between them and a neutral at the mid-point.  The use of two phases of a 208Y/120V system for residential is generally confined to multi-dwelling buildings that would have needed something more that 800A of 120/240V.

RE: 50 hz systems

(OP)
The equipment for the project I am working on will require being powered from 380/220 vac 50 hz. I need to know more specifically information for dual rated 50 hz and 60 hz equipment and loads used on this system.

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