Depending on the ME meter version, meter will automatically select the appropriate units and therefore it is not possible to modify the energy units. From 40/5 to 150/5 CT ratio, the energy unit display is KWh and from 200/5 to 6000/5 CT ratio, the energy unit display is MWh.
To change the CT settings hold down the button on the Front Face of the ME Meter for more than 5 sec when on the CT Rating display. After approximately 5 sec the display will start blinking, now enter the CT setting. Once again hold the button till the display stop flashing, to ensure that the entry is saved.