I want to Develop an AC and DC side measurement system for solar inverters. Its my school project.

WHat are you trying to measure? Volts or Amps?

So you are inverting DC, as what a solar panel produces, to AC. DC measurement will be easy, just use a VOM, there is no voltage change. Some inverters are square wave, some sine wave, some half wave some full wave so you can get different readings for AC. What exactly are you trying to do and measure?

Thank you for your answers
I have to measure current and voltage for both :/
AC side
- current 0 - 10 A
- voltage 0 - 200 V

DC side
- current 0 - 10 A
- voltage 0 - 400 V

This better explains how to do it using hall effect sensors. I think you will find it interesting reading.

How to measure current and power -  using a hall effect transducer - clamp (http://www.scienceshareware.com/how-to-measure-AC-DC-current-with-a-hall-effect-clamp-.htm)