A dual voltage device can accept both V and V. Luckily, many travel gadgets are dual voltage, so you'll only need a plug adapter, also called a travel adapter. Plug adapters are much smaller, lighter, and, thankfully, they're also pretty cheap. Many digital dual voltage devices adjust automatically.
Is v the same as v? Stuff Well-Known Member. Receptacle's rating is v but standard voltage in the US is considered v. Do I need a voltage converter for USA? This means that you will not need a converter or transformer but just a travel adaptor, because the USA operates on a V supply voltage, which is within the V range that the dual voltage appliance operates on.
How do I choose a voltage converter? The size of a voltage converter is defined by the wattage. Therefore, the size you'll need depends on which devices you'll be powering and the number of watts they use. Then finally in , the Electro-Technical Exposition in Frankfurt Germany marked the end of the DC era of power when three-phase current was born.
Originally V power was established. However, after World War II, Europe made the change to V power to improve power transmission efficiency and to adjust for available materials. The US would have likely made this change as well, however, this would have proven too costly. As a result, the voltage level also reverses along with the current. Below you will find a map of the planet showing each location's corresponding standard Voltage and Hertz.
Power delivered is voltage x current x power-factor. So it is possible to have considerable motor current in the wires with little power output. Fractional horsepower motors have a goodly amount of resistance compared to their reactive component and because of this have greater resistive losses. The debate between 50 and 60 hz can go on forever and from a practical sense, has existed since the dawn of electric power. Hysteresis losses in magnetic materials is a positive function of frequency, thereby increases with frequency.
But, at the same time, the peak magnetic flux required to transmit the same power increases with decreasing frequency. Aircraft systems uses hz to reduce weight.
Europe tends to use 50 hz while the US and Canada uses 60 hz. Sometimes it seems that this difference is maintained to make it more difficult to apply products from one side of the ocean to the other - e. Some things like hermetic compressors for refrigeration are only made at a few plants in the whole world.
Rather than maintain separate designs they just add the 'extra iron' needed to work at 50 Hz. The speed also changes, but that is easily accounted for in how the compressor is applied. The Europeans 'harmonized' their voltage specs by smearing them and most equipment had enough margin it did not create very many real changes. The "A. Wood", foot diameter, screw pumps that drain much of New Orleans had their own 25 Hz power plants.
They were installed ca. Higher voltage power does not make an easier-starting motor. Three-phase power makes an easier-starting motor. Larger industrial motors are usually three-phase. They are also less expensive to manufacture without so much extra equipment to make them start.
It's just a standard that developed, for "no" reason worth knowing. Also, 50 or 60 Hertz. Same process: a standard developed over time and there is "no" reason to dislike or prefer one over the other.
The differences have been well explained. Another difference is efficiency and thickness of wire. Not that big a deal. Good article on Gizmodo about this recently, and why attempts to standardize on a single voltage, frequency, and outlet have failed Electronic gadgets increasingly are supplied with wall warts or internal power supplies capable of operating from to volts. All you need is the proper plug adapter for your country.
BTW, most European standard plugs have shielded pins and recessed receptacles, so it's essentially impossible to contact a live pin when plugging or unplugging them. I think you could argue that this makes them safer than the usual 2-pin US v plug. If the standard 2-pin US plug were introduced today it would spark sorry lawsuits over its hazardous design, which makes contact with live pins much too likely when making or breaking connections.
I also often see old houses with worn-out receptacles and plugs hanging out of them, the pins partially exposed. Just plain lousy design. Three-pin grounded plugs are less likely to fall out of the wall receptacle, but it's still possible to contact live pins when making and breaking connections.
Higher voltage allows for less drop in the lines feeding the motor and faster starts with less heat buildup. A 3-phase motor has a non-zero starting torque. A single phase motor has zero starting torque and requires start windings, capacitors, and switches to activate and deactivate the start winding.
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Join as a Pro. Houzz TV. Houzz Research. Shop Featured Holiday Categories. Home Decor. Holiday Decor. Other parts of the world use a 50Hz standard. With the two legs feeding your house being out of phase, can you pick up V AC by using both legs rather than one leg and neutral.
The neutral wire is not utilized in a V circuit as the current is fed by one leg and returned on the other leg. A word of caution These voltages refer to 3-phase power systems, more typically found in commercial or industrial applications for large motors and other equipment.
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