Radio influence voltage is high frequency voltage that appears at the terminals
of high voltage electrical equipment. It is used along with partial discharge as
a measure of the dielectric properties of insulation and to determine if there
is the potential for leakage current in your test sample that could lead to
The DDX9121-RIV is partial discharge testing equipment that offers single or
multi-phase partial discharge and RIV testing of all transformers, rotating
machines, switchgear, surge arrestors.