Why sub stations are rated as 11kw and 22kw why not as 10 kw or 13kw?

Substations are never rated for their power, their rating is of KV, normally we follow ANSI standard for ratings

Thanks for invitation

 

it is KV not KW

there are many standrads around the world, most famous is ANSI and IEC

each country follow one of this standard

standard in force in France UTE C18-510 defines the voltage levelsalternative

Hi... Thanks for invite. Nice question

Thanks for invite.but its not my speciality.