because alternators which is used in generating station are desiged for 50 hz heigher or lower fequencies are not possible
It is an AC supply with an rms voltage of 230 v and a frequency of 50 Hz, as used throughout Europe.
As of 2000, Australian power points supply AC 230v at 50hz. Pre-2000, it was 240v at 50hz.
The standard domestic electricity supply in Ireland is 230 volt AC (frequency 50hz). The most common plug used is the 13 amp three-pin plug.
220v 50Hz
Mains refer to the general-purpose alternating current (AC) electric power supply. In the UK, households receive 230v of electricity for normal house hold use at a frequency of 50Hz. The advantage attached with the use of alternating current is the ease with which it can be stepped up or down to suit the purpose using a transformer.
240V AC 50HZ
AC supply means the supply voltage is alternating one. Supply has some particular frequency and magnitude. e.g. usual power supply to domestic use DC supply means the supply voltage (or current) is not alternating. It is fixed one. i.e. frequency is zero. e.g. batteries
Alternating current (AC) is easier to transmit over long distances than is direct current (DC).
The voltage used in Ireland is 220V AC, at 50Hz.
iMacs can operate on a power supply ranging between 100-240V AC (50Hz to 60Hz, single phase frequency) which means they will work in most countries. An adapter may be required to connect to the local power supply.
220VAnswer220 V @ 50 Hz, Plug is G.
AC supply of 220V for domestic use. So appliances normally have the range of 220Vac - 240Vac.