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Transformer and apparatus configured to provide current limiting power supply and galvanic barrier

A technology of current limiting device and transformer, applied in emergency protection circuit devices, transformers, circuit devices, etc. for limiting overcurrent/overvoltage, and can solve problems affecting product and/or equipment performance, etc.

Pending Publication Date: 2022-04-15
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the CLR limits the available battery capacity, where figure 2 The battery life of products / equipment using CLR is shown in , where Vmin can be equal to the minimum voltage needed to help avoid circuit de-energization (i.e. shutdown), and Vbat is the output battery voltage over time, where if not for the CLR caused by the voltage drop, Vbat may be higher
Therefore, existing current limiting methods adversely affect the performance of IS-based products and / or equipment

Method used

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  • Transformer and apparatus configured to provide current limiting power supply and galvanic barrier
  • Transformer and apparatus configured to provide current limiting power supply and galvanic barrier
  • Transformer and apparatus configured to provide current limiting power supply and galvanic barrier

Examples

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Embodiment Construction

[0021] Before describing the exemplary embodiments in detail, it is noted that the embodiments reside primarily in combinations of equipment components and process steps that relate to current limiting devices and in particular transformers configured to provide a current limiting energy source.

[0022] Accordingly, components are indicated by conventional symbols where appropriate in the drawings, and only those specific details that are relevant to an understanding of the embodiments are shown so as not to obscure the disclosure from the perspective of those of ordinary skill in the art having the benefit of what is described herein. Obvious detail confusion. Like reference numerals refer to like elements throughout the specification.

[0023] As used herein, relative terms such as "first" and "second," "top" and "bottom" may only be used to distinguish one entity or element from another without necessarily requiring or implying any physical or A logical relationship or se...

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PUM

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Abstract

According to one or more embodiments, a current limiting device is provided. The current limiting device includes a transformer including: a primary winding configured to receive an input current; a core electromagnetically coupled to the primary winding; and a secondary winding electromagnetically coupled to the core. The secondary winding is configured to provide a current limiting energy source based on the input current, wherein the current limiting energy source is limited to a predetermined maximum current based on at least one characteristic of the core.

Description

technical field [0001] The present disclosure relates generally to a current limiting device and system, and in particular to a transformer and devices using the transformer, where the transformer is configured to provide a current limiting energy source and / or a galvanic barrier. Background technique [0002] For systems with one or more circuits operating from at least one system voltage, electrical design principles may suggest reducing impedance to minimize voltage drop and maximize use of available current. Conversely, intrinsically safe (IS) designs may suggest increased impedance to limit potential arcing current and minimize power delivered to circuit components. IS refers to the general guidelines / principles commonly used to manufacture gear for use in hazardous environments. One goal of IS equipment is to limit the energy in the equipment that can be used to ignite flammable fluids in hazardous environments. For example, electrical components in a self-contained ...

Claims

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Application Information

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IPC IPC(8): H02H9/02H02H9/00A62B7/02A62B9/00A62B9/02H02H7/04H01F38/02H01F27/24H01F27/28
CPCA62B7/02H01F38/02A62B9/00A62B9/006H02H9/008H01F29/14A62B9/022
Inventor 达林·K·汤普森马修·M·谢特尔大卫·艾伦·阿梅罗伊万·马特奥·德拉梅尔安德烈亚·杜克希尔
Owner 3M INNOVATIVE PROPERTIES CO
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