There are more than 10 of different power outlet standards. Different shapes, pins configuration and voltage. How to manage it?
Many producers are using detachable power cords in order to minimize differences between machines produces for separate worlds regions.
Most countries use voltage in 220V-240V range. Check this map for voltage and current frequency details:
Depending of country, there is number of different plugs and sockets. See this map to check plug and socket standards in specific regions.
