By: Henk Pasman
Electrical equipment is made by the manufacturer only for a certain
frequency and cannot be used on an other frequency!
In some cases it is made to be used for
both frequencies and in that case specifically mentioned on the type
plate: 50/60 Hertz.
Battery charger for a laptop computer.
On the type plate is mentioned: 100-240 Volt and 50/60 Hertz
(which means any voltage between 100 and
240 volt plus can be used on either 50 or 60 Hertz)
Why you cannot use it on the other
- because the internal current goes up
and this might cause faster deterioration of the insulation on the
wiring, which causes short circuit and this may lead to fire, which can
burn down your house!
In transformers (like input transformer
of the equipment) the current goes up.
In motors (like cooling ventilator or
compressor) also the current goes up, the turns of the motor depends on
the frequency, which means the turns are 17% higher if you go from 50
Hertz to 60 Hertz and 17% lower if you go from 60 Hertz to 50 Hertz,
plus in this case the internal cooling is lower!
Can I do anything in order to still
use the equipment on an other frequency?
Yes you can but at your own risk, you
still cannot change the effect of higher or lower turns, but you can
lower the current:
Lower the voltage to the equipment with
about 20% as mentioned on the type plate, buy means of a transformer.
Europe model 230 Volt 50 Hertz to be
used in the States on 60 Hertz: connect it with a transformer from 120
Volt on the electrical outlet in the States to 180 Volt for the
equipment. (instead of the mentioned 230 Volt)
USA model 120 Volt 60 Hertz to be used
in Europe on 50 Hertz:
connect it with a transformer from 230
Volt on the electrical outlet in Europe to 90 Volt for the equipment.
(instead of the mentioned 120 Volt)
Can women use there hairdryer on
vacation on an other frequency? Only if on the type plate is mentioned
50/60 Hz and if it can be adjusted to the other voltage of either 120
Volt or 230 Volt. Do not think you can buy a universal adapter, because
this is only possible if the adapter can handle the wattage (around 1200
Watt or VA). An adapter like this is quite heavy if it based on a
transformer, if it is based on electronics it is not heavy but it might
damage the equipment and should only be used for a short period of time.