At present, there are two kinds of voltage used in the world: 100V ~ 130V, and 220 ~ 240V. 100V ~ 130V is classified into low pressure, such as in US, Japan, and the voltage on board which pay more attention to safety;220 ~ 240V are high pressure which includes China and many European countries.
South Africa Sabs Pin Plug, also can be called SANS pin plug. South African national standard plugs are divided into large South African plugs and small South African plugs. It usually contains three round pins.
BS 546 standard evolved from the British standard 546