SINGLE-POLE KILOVOLT-METER Russian patent published in 2017 - IPC G01R19/00 

FIELD: measuring equipment.

SUBSTANCE: present invention relates to measurement equipment, in particular, to electric instruments, which can be used for high voltages measuring, including in high alternating voltage single wire lines in liquid media. Present invention objective is development of device, enabling to measure high alternating voltage using single-wire technique. Assigned task is solved by fact, that for high-voltage measuring device has only one measuring terminal and uses single-wire technique. Kilovolt-meter has plastic housing, on front panel of which only one input terminal and measuring head are installed. Inside housing circuit is arranged, which contains first selenium stack VD1, capacitor C1 and opposite connected second selenium stack VD2. Selenium stacks VD1, VD2 and capacitor C1 form closed loop, and measuring head PA1 is connected in parallel to capacitor C1. At that, input terminal X1 is connected both to first stack VD1, and to second stack VD2. High voltage measurement is made based on magnetoelectric system microammeter.

EFFECT: technical result consists in improvement of safety, simplification of design by means of avoiding bipolarity and using only one pole for measurement of high voltage.

1 cl, 1 dwg