Patent ID: 11047882

Abstract:
Provided are a non-contact voltage measurement device and diagnosis system capable of acquiring the voltage of an electric wire without disconnecting the wire. The non-contact voltage measurement device (100) includes: a cylindrical fixing part (110) for holding an electric wire (10) by clipping the same from both sides; a first electrode (121) and a second electrode (122) provided on the inner peripheral surface of the electric-wire-holding side of the fixing part (110) so as to be separated by a distance (D2); a first measurement capacitor (C3) and a voltage division capacitor (C2) connected to the first electrode (121); a second measurement capacitor (C3′) connected to the second electrode (122); a terminal (131) for measuring the voltage (V1) applied to the first measurement capacitor (C3); and a terminal (132) for measuring the voltage (V2) applied to the second measurement capacitor (C3′).