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Low-voltage power capacitor

A technology of power capacitors and low-voltage power, applied in the direction of capacitors, electrical components, etc., can solve the problems of monitoring internal temperature, unable to reflect the working current of capacitors, etc., to achieve the effect of protection

Active Publication Date: 2013-12-04
ZHEJIANG NANDA ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention proposes a low-voltage power capacitor, which solves the problems in the prior art that the working current of the capacitor cannot be reflected and the internal temperature can be monitored

Method used

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0019] Such as Figure 1-3 As shown, a low-voltage power capacitor includes a capacitor top cover plate 1, and a current temperature signal integration terminal module 2 and a three-phase power supply terminal module 5 are respectively installed on the left and right sides of the upper end surface of the capacitor top cover plate 1. The center of the capacitor top cover plate 1 is provided with a grounding stud 18, which can ensure reliable grounding of the power c...

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Abstract

The invention provides a low-voltage power capacitor which comprises a current temperature signal integrated terminal module, a current transformer and a temperature sensor. The current temperature signal integrated terminal module is connected onto a top cover plate of the capacitor, the current transformer is connected with the current temperature signal integrated terminal module and used for detecting internal current signals of the power capacitor, the temperature sensor is used for detecting internal temperature signals of the power capacitor, and the current temperature signal integrated terminal module is connected with a detection control unit outside the capacitor to control and protect the capacitor. The low-voltage power capacitor has the advantages that internal operating current and temperature of the power capacitor can be monitored, feedback signals are rapidly collected, and the power capacitor is timely protected.

Description

technical field [0001] The present invention relates to the technical field of low-voltage power capacitors, in particular to a power capacitor that is convenient for detecting the internal current and temperature of the capacitor. Background technique [0002] In low-voltage power distribution, power capacitors are essential. The traditional power capacitor top cover only contains A, B, C three-phase power terminals and neutral terminal. Therefore, the power capacitor itself cannot provide the internal current signal and temperature signal of the capacitor. It cannot reflect the working current of the capacitor in real time, and provide real-time feedback on abnormal conditions such as harmonics and surges in the power system; it is also impossible to protect the capacitor by controlling the switching state of the capacitor. In addition, the temperature inside the capacitor cannot be measured in real time, and the real-time monitoring of the temperature change of the capa...

Claims

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Application Information

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IPC IPC(8): H01G2/14
Inventor 戴珏珺郑坚
Owner ZHEJIANG NANDA ELECTRICAL