For systems to operate, a rated (DC) voltage (URdc) of 2000V must be applied internally.In order to power systems, you must have a rated (AC) voltage of 700V (URac).
R76UN21005030K Features
a rated (DC) voltage (URdc) of 2000V an internal rated (AC) voltage (URac) of 700V
R76UN21005030K Applications
There are a lot of KEMET R76UN21005030K applications of film capacitors.