Measure 10kV with 600V rated multimeter
10 kV AC is measured using a voltage transformer.



Figure 1. Source: gfuve.com.


  The Model GFJDZX0978-10BG voltage transformer is single-phase multi-winding whole sealing epoxy pouring product. It is used both indoor and outdoor for measurement of voltage and electric energy as well as relay protection in the electric system of rated frequency 50/60Hz and rated voltage 12kV or below.


10 kV measurement is not something you do with a few 1/4 W resistors and a hobby multimeter.