Voltage standards for solenoid valves in the world

voltage (voltage), also known as potential difference or potential difference, is a physical quantity that measures the energy difference generated by a unit charge in an electrostatic field due to the difference in electric potential. Its magnitude is equal to the work done by the unit positive charge moving from point A to point B due to the electric field force, and the direction of the voltage is specified as the direction from the high potential to the low potential. The International system of Units of voltage is volts (V, referred to as volts), and commonly used units are millivolts (mVV), microvolts (μV), kilovolts (KV) and so on. This concept is similar to the "water pressure" caused by a high or low water level. It should be pointed out that the term "voltage" is generally only used in circuits, and "potential difference" and "potential difference" are generally used in all electrical phenomena.

The solenoid valve has a control coil, and the working voltage of the control coil has DC and AC, taking the world-famous German WODE solenoid valve as an example, the commonly used voltage has DC 24V,48V, etc., AC 127V,220V,380V and so on.

But there are many kinds of voltages in the world, and the standards are not the same. Let's distinguish the following:

Voltage profiles of countries around the world

100V: Japan, North Korea

110 ~ 130V: Taiwan, USA, Canada, Panama, Cuba, Lebanon, Mexico

220 ~ 230V: United Kingdom, Germany, France, China, Singapore, Hong Kong (200V), Italy, Spain, Greece, Austria, Netherlands, Philippines, Thailand, Norway, Singapore, India, New Zealand, Australia

Note 1: In countries with 220 ~ 230V voltages, there are also situations where 110 ~ 130V voltages are used according to regional needs, such as Sweden and Russia.

Most countries use a voltage of 220 ~ 230V for indoor electricity, because high voltage has the advantages of power saving and high thermal efficiency. Recently, Japan proposed a plan to increase the voltage, which has caused wide discussion in the country.

Here are the voltages by country:

Argentina: Voltage: 220V(single-phase), 380V(three-phase), frequency: 50Hz

Brazil: Voltage: 110/220V(single-phase), 380/460V(three-phase), frequency: 60Hz

Canada: Voltage: 120/240V(single-phase), 208/240V(three-phase); Frequency: 60Hz

Mexico: Voltage: 127/220V(single-phase), 220V(three-phase); Frequency: 60Hz

United States: Voltage: 120/240V(single-phase), 208/240V(three-phase); Frequency: 60Hz

Australia/New Zealand: Voltage: 240/415V(single phase), 415V(three phase); Frequency: 50Hz

Hong Kong: Voltage: 120/220V(single-phase), 220V(three-phase); Frequency: 50Hz

India: Voltage: 230V; Frequency: 50Hz

Indonesia: Voltage: 230V(single-phase), 380V(three-phase); Frequency: 50Hz

Japan: Voltage: 100/200V(single phase), 200V(three phase); Frequency: 50Hz

South Korea: Voltage: 220(single-phase), 380(three-phase); Frequency: 60Hz

Malaysia: Voltage: 220-240V; Frequency: 50Hz

Philippines: Voltage: 220V; Frequency: 60Hz

Singapore: Voltage: 230V(single-phase)400V(three-phase); Frequency: 50Hz

Taiwan: Voltage: 110/220V(single-phase)220V(three-phase); Frequency: 60Hz

Thailand: Voltage: 220V(single-phase)380V(three-phase); Frequency: 50Hz

Vietnam: Voltage: 120/220V(single-phase)220V(three-phase); Frequency: 50Hz

Denmark: Voltage: 230V(single-phase)380V(three-phase); Frequency: 50Hz

Finland: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Germany: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Hungary: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Lithuania: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Poland: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Slovak Republic: Voltage: 230V(single-phase)380V(three-phase); Frequency: 50Hz

Slovenia: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Sweden: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Czech Republic: Voltage: 230V(single-phase)380V(three-phase); Frequency: 50Hz

Croatia: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Norway: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Switzerland: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Ukraine: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz

Russia: Voltage: 230V(single phase)380V(three phase); Frequency: 50Hz