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Electric quantity acquisition circuit and device

A power acquisition and circuit technology, applied in voltage/current isolation, using AC to DC conversion for measurement, etc., can solve problems such as wasted man-hours and safety hazards, and achieve the effect of reducing safety hazards and saving man-hours

Pending Publication Date: 2022-07-01
VERTIV TECH (XIAN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a power collection circuit and device, which are used to solve the problems in the prior art of wasting man-hours and potential safety hazards when conducting reinforced insulation tests

Method used

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  • Electric quantity acquisition circuit and device
  • Electric quantity acquisition circuit and device
  • Electric quantity acquisition circuit and device

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Embodiment Construction

[0051] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. . Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0052]Insulation test, that is, insulation test, in the embodiment of the present invention, in order to perform insulation test on the primary side and the secondary side, a voltage is applied between the primary side and the secondary side step by step, and the leakage current is tested. After the voltage is added to a certain level, if If the leakage current tested is less than the current value specified in the standard,...

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Abstract

The invention discloses an electric quantity acquisition circuit and an electric quantity acquisition device, which are used for solving the problems of waste of working hours and existence of potential safety hazards when a reinforced insulation test is carried out in the prior art. The electric quantity acquisition circuit comprises an AC-DC conversion unit, an acquisition unit, a processing unit, a power supply isolation unit and a communication isolation unit, the power supply isolation unit isolates current between a power supply end of the acquisition unit and a power supply end of the processing unit, and the communication isolation unit isolates current when a communication end of the acquisition unit communicates with a communication end of the processing unit. Due to the existence of the power supply isolation unit and the communication isolation unit, the phenomenon of large current does not occur on the sampling unit side, so that a sampling terminal does not need to be pulled out for enhanced insulation test, thereby saving working hours and reducing potential safety hazards.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a power collection circuit and device. Background technique [0002] The monitoring host of the data center computer room needs to realize the integration of the environmental monitoring part and the power acquisition function. The power acquisition circuit commonly used in the industry usually adopts such as figure 1 circuit shown. [0003] figure 1 In the power acquisition circuit shown, the power acquisition chip uses high-impedance isolation for voltage signals when sampling signals, and isolation devices for sampling when sampling current signals, such as CT (Current Transformer, current transformer), Rogowski coils . The power supply and the communication part share an AC-DC (Alternating Current-Direct Current, AC-DC) power module with the secondary side. [0004] The power acquisition circuit, when the reinforced insulation test is carried out during the prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/22G01R15/18
CPCG01R19/22G01R15/18G01R1/36G01R19/2513G01R31/40G01R21/06G01R21/133G01R31/52H02M7/04H02M3/33561H02M3/335
Inventor 曹宏桂房继军薛波浪
Owner VERTIV TECH (XIAN) CO LTD