US 11,342,127 B2 · Transformer for vacuum capacitor type instrument

Abstract

A vacuum-capacitor-type instrument voltage transformer (1) is equipped with a main capacitor (2) and an insulating tube (3) that accommodates the main capacitor (2). A voltage dividing capacitor (4) is connected to the main capacitor (2) in series. The main capacitor (2) is equipped with a plurality of vacuum capacitors (2a) to (2c) that are connected in series. A high-voltage-side electrode (6) is provided on a high-voltage side of the insulating tube (3), and a ground-side electrode (7) is provided on its low-voltage side. The high-voltage-side electrode (6) is equipped with a high-voltage shield (8). Electrostatic capacity of the vacuum capacitor (for example, the vacuum capacitor (2a)) disposed on the high-voltage side is set to be greater than electrostatic capacity of the vacuum capacitor (for example, the vacuum capacitor (2b)) disposed on the low-voltage side.

Claims1

Dependent claims

A vacuum-capacitor-type instrument voltage transformer, comprising:

a main capacitor that provides a connection between a primary line-path side and a voltage dividing point;
a voltage dividing capacitor that is connected with the main capacitor in series and provides a connection between the voltage dividing point and a ground-side terminal;
and
an insulating tube accommodating the main capacitor,
wherein the main capacitor comprises a plurality of vacuum capacitors that are connected in series between the primary line-path side and the voltage dividing point, and
wherein the plurality of vacuum capacitors are arranged such that electrostatic capacity of a vacuum capacitor disposed at a high-voltage side is greater than electrostatic capacity of a vacuum capacitor disposed at a low-voltage side.

3 more elements

Dependencies are inferred from the claim text.

Transformer for vacuum capacitor type instrument

Life of this patent

Transformer for vacuum capacitor type instrument

Life of this patent

Abstract

Claims1