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# 400Hz

#### Why we use 50Hz, 60Hz or 400Hz frequency?

##### Thursday, January 12, 2017

Why the frequency of power supplies in European and Asian countries is 50Hz, while American countries use 60Hz power supplies? What is the basic of the standard? What are the advantages and disadvantages of 50Hz and 60Hz power supply? In addition, why the airport and aircraft use 400Hz frequency?

In fact, there is no big difference between 50Hz and 60Hz, only the generator speed has slightly difference. Ch ...

#### Why we use 115v 400Hz power supply in aircraft?

##### Saturday, January 30, 2016

Aircraft electrical components operate on many different voltages both AC and DC. However, most of the aircraft systems use 115 volts AC at 400 hertz or 28 volts DC. 26 volts AC is also used in some aircraft for lighting purposes, where the power is generated by a commutator which regulates the output voltage of 28 volts DC. AC power, normally at a phase voltage of 115V, is generated by an alternator, g ...

#### GoHz Frequency Converter Operation Guide

##### Wednesday, December 24, 2014

GoHz frequency converter is a great solution for converting 50Hz to 60Hz among different countries, also can convert 60Hz to 50Hz, in additional of frequency adjusting, the output voltage is changeable from 0-300 volts for single phase power supply, 0-520 volts for three phase power supply. This article shows the basic operation guidelines of GoHz static frequency converter, you can easy set up a converter by following this guide. ...

#### Operating 50Hz transformer on 60Hz supply

##### Wednesday, December 24, 2014

You can run the 50Hz transformer on a 60Hz supply. Now since the frequency has changed the only variable thing in the existing transformer that can change (assuming simple one input and one output) is the flux density. In its simple form we are operating the transformer (60Hz/50Hz = 1.2) at 20% lower flux density.

If the things were reversed the flux density would be 20% higher and may saturate depending on design. You can even run the transformer at 400Hz providing that the volta ...

#### What frequencies are used in AC power system?

##### Monday, December 1, 2014

AC power systems around the world have different frequencies. Inverter grid synchronization with phase locked loops handles frequency and phase variation. What AC power system frequencies do you expect your power converter to deal with?

"Utility side" frequencies: 25 Hz, 50 Hz, 60 Hz, 240 Hz, and 400 Hz. Include a +/- 5 percent range for each, to cover system instabilities. "Harmonic" frequencies found on incoming line: 5th, 7th ...