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# 50 Hertz (Hz)

## What is 50 Hertz?

50 Hertz (Hz) means the rotor of the generator turns 50 cycles per second, the current changes 50 times per second back and forth, direction changes 100 times. That means the voltage changes from positive to negative, and from negative to positive voltage, this process converts 50 times/second. The electricity 380V AC and 220V AC, are both 50 Hz frequencies.

The speed of 50 Hertz 2 poles synchronous generator is 3000rpm. AC power frequency is determined by the pole number of the generator p and speed n, Hz = p*n/120. The grid standard frequency is 50Hz, which is a constant value. For a 2-pole motor, the speed n = 50 * 120 / 2 = 3000rpm; for a 4-pole motor, the speed n = 50 * 120 / 4 = 1500rpm.

Why use 50 Hertz?
When the frequency increases, the copper and steel consumptions of the generator and transformer decrease, along with the reduction of weight and cost, but will make the inductances of the electrical equipment and transmission line increase, reduce the capacitances and increase losses, thereby reduce the transmission efficiency. If the frequency is too low, the electrical equipment's materials will increase, along with heavy and high cost, and will make lights flashing obviously. Practices have proved using 50Hz, 60Hz frequencies are appropriate.

## Can a 50 Hertz motor run on 60 Hertz?

Since the formula for governing the synchronous speed of a three-phase motor is n = (120 * Hz)/p if this is a 4-pole motor then at 50 Hertz the speed would be 1500 RPM whereas at 60 Hertz the speed would be 1800 RPM. Since motors are constant torque machines then by applying the formula that HP = (torque*n)/5252 then you can see that with a 20% increase in speed the motor would also then be able to produce 20% more horsepower. The motor would be able to produce rated torque at both 50/60 Hertz frequencies only apply if the V/Hz ratio is constant, meaning that at 50Hz the supply voltage would need to be 380V and at 60Hz the supply voltage would need to be 460V. In both cases the V/Hz ratio is 7.6V/Hz.

I used to set a 50 Hz three phase motor to run on 60 Hz power supply many times per year, using frequency converters capable of full motor speed regulation. Use a 20% factor across the board in the programming.

For example, a motor at 1 hp, 50 Hz, 400V AC, set the motor Hertz in the frequency converter to 60Hz, then the motor voltage to 480V AC. This will increase the motor output to approx. 1.2 hp, with a corresponding increase in torque. Setting the motor speed (RPM) using the 20% factor is also essential. For example, if the motor speed at 50 Hertz is 1,400 RPM, dividing the RPM total by 0.8, results in a quotient of 1,750 RPM. By affording this balance of the Volts/Hz/RPM ratio, the motor design criteria is very closely matched in the conversion.

Where is 50 Hertz being used?

 Country Hertz Voltage 1 Phase 3 Phase Afghanistan 50 Hz 220V 220/380V Algeria 50 Hz 127/220V 220/380V Angola 50 Hz 220V 220/380V Antiqua 50 Hz 230V 230/400V Argentina 50 Hz 220V 220/380V Australia 50 Hz 240V 240/415V Austria 50 Hz 220V 220/380V Bahrain 50 Hz 110/230V Bangladesh 50 Hz 230V 230/400V Barbados 50 Hz 110/200V 120/208V Belgium 50 Hz 127/220V 220/380V Bolivia 50 Hz 115/230V 220/380V Brazil 50/60 Hz 127/220V 220/380V Bulgaria 50 Hz 220V 220/380V Burma 50 Hz 230V 230/440V Cameroon 50 Hz 220V 220/380V China 50 Hz 220V 220/380V Congo 50 Hz 220V 220/380V Cyprus 50 Hz 240V 240/415V Czech 50 Hz 220V 220/380V Danmark 50 Hz 220V 220/380V Egypt 50 Hz 220V 220/380V Equatorial Guinea 50 Hz 220V Faeroe Islands 50 Hz 220V 220/380V Fiji 50 Hz 240V 240/415V Finland 50 Hz 220V 220/380V France 50 Hz 220/127 220/380V Gabon 50 Hz 220V 220/380V Gambia 50 Hz 230V 230/400V Germany 50 Hz 230V 220/380V Ghana 50 Hz 220V 220/400V Gibraltar 50 Hz 240V 240/415V Greece 50 Hz 220V 220/380V Guinea 50 Hz 220V 220/240V Guiana 50 Hz 110/220V 220V Hong Kong 50 Hz 220V 200/346V Hungary 50 Hz 220V 220/380V Ice Land 50 Hz 220V 220/380V India 50 Hz 230V 220/380V 230/400V Indonesia 50 Hz 127/200V 220/380V Iran 50 Hz 110/220V 220/380V Iraq 50 Hz 220V 220/380V Ireland 50 Hz 220V 220/380V Israel 50 Hz 230V 230/400V Italy 50 Hz 127/220V 220/380V Jamaica 50 Hz 100/220V 220V Japan 50/60 Hz 110/220V 220V Jordan 50 Hz 220V 220/380V Kuwait 50 Hz 220V 220/380V
 Country Hertz Voltage 1 Phase 3 Phase Lebanon 50 Hz 110/190V 220/380V Libya 50 Hz 127/220V 220/230V 400V Luxembourg 50 Hz 120/208 220/380V Macao 50 Hz 115/220V 220/380V Majorca Island 50 Hz 127/220V 220/380V Malagasy Rep. 50 Hz 127/220V 220/380V Malaysia 50 Hz 115/240 240/415V Mali 50 Hz 220V 220/380V Malta 50 Hz 240V 240/415V Mauritania 50 Hz 220V 220V Mauritius 50 Hz 230V 230/400V Mexico 50/60 Hz 110/220V 208/220V Monaco 50 Hz 127/220V 220/380V Morocco 50 Hz 220V 220/380V Mozambique 50 Hz 220V 220/380V Nepal 50 Hz 230V 230/440V Netherlands 50 Hz 220V 220/380V New Zealand 50 Hz 230V 220/380V Oman 50 Hz 220V 220/440V Pakistan 50 Hz 230V 230/400V 220/380V Paraguay 50 Hz 220V 220V Poland 50 Hz 220V 220/380V Portugal 50 Hz 220V 220/380V Saudi Arabia 50/60 Hz 127/220V 220/380V Scotland 50 Hz 240V 240/415V Senegal 50 Hz 120/220V 220V Singapore 50 Hz 115/230V 230V Somalia 50 Hz 110/220V 220/380V South Africa 50 Hz 220/230 220/380V 230/400V Spain 50 Hz 127/220 220/380V Sri Lanka 50 Hz 230V 230/400V Sudan 50 Hz 240V 240/415V Sweden 50 Hz 220V 220/380V Switzer land 50 Hz 220V 220/380V Tanzania 50 Hz 230V 230/400V Thailand 50 Hz 220V 220/380V Tonga 50 Hz 240V 240/415V Tunisia 50 Hz 127/220V 220/380V Turkey 50 Hz 115/220V 220/380V Uganda 50 Hz 240V 240/415V Russia 50 Hz 127/220V 220V United Kingdom 50 Hz 240V 240/415V Uruguay 50 Hz 220V 220V Viet-Nam 50 Hz 127/220V 220/380V Western Samoa 50 Hz 230V 230/400V Yugoslavia 50 Hz 220V 220/380V Zambia 50 Hz 220V 220/380V

### Why use a 50 Hertz to 60 Hertz Converter?

Case 1: When you travel or move from one country (50 Hertz, e.g. UK, UAE, Malaysia) to another (60 Hertz, e.g. USA, Philippines, Peru), and bring some 50 Hertz electric appliances which are not compatible with running on 60 Hertz, or sometimes we just buy a device which is only available for 50 Hertz power system, in such cases, we need a 50 Hertz to 60 Hertz frequency converter to convert Hertz (or vice).

Case 2: Some multination enterprises make electrical home appliances, industrial machines outside the selling market countries, e.g. a Canada enterprise making an electric device in India (50 Hertz) and tend to sell the products in USA, Canada (60 Hertz), or a Australia (50 Hertz) enterprise exports electrical appliances to US, Philippines, the company will need a 50 Hertz to 60 Hertz converter (or 60 Hertz to 50 Hertz) to test the appliances' operation compatibility under expected Hertz.

There are much more cases we need to convert 50 Hertz to 60 Hertz, or from 60 Hertz to 50 Hertz, in case you are interesting to get one, just shopping on GoHz.com, we are selling:
Single phase frequency converters, generally for home appliances;
Three phase frequency converters, generally for industrial equipments.