RESEARCH, DESIGN AND MANUFACTURE OF THE OIL TEST SET CALIBRATION METER

Nguyen Van Dua; Nguyen Hoang Long; Pham Dinh Kha; Le Dinh Tung; Le Quoc Tuan; Do Anh Tuan; Do Trong Tuan; Cao Xuan Thao

Nguyen Van Dua National Center for Technological Progress
Nguyen Hoang Long Vietnam Maritime University
Pham Dinh Kha Vietnam Maritime University
Le Dinh Tung Vietnam Maritime University
Le Quoc Tuan Vietnam Maritime University
Do Anh Tuan Hung Yen University of Technology and Education
Do Trong Tuan Vietnam Maritime University
Cao Xuan Thao Vietnam Metrology Institute

Abstract

This paper presents research, design and manufacture of the voltage measuring device in the range from 0 to 80kV. The device consists of 03 main components: a mechanical system connected to the insulation oil tester, a measurement circuit processing block and a central processing unit. In particular, the measurement circuit processing block uses a resistive voltage divider system combined with box made of Teflon material to ensure insulation. The test result show that the mechanical design of the box ensures insulation when the test voltage is up to 80kVrms, the error of the device is 0.458% of the reading

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