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Remote control relay

A technology of relays and current transformers, applied in the direction of relays, electromagnetic relays, detailed information of electromagnetic relays, etc., can solve problems such as the influence of current detection, heat and electromagnetic noise generated at contacts, and achieve the goal of reducing the number of components and reducing manufacturing costs Effect

Inactive Publication Date: 2009-12-02
PANASONIC CORP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0006] However, when the contacts of the remote control relay are opened and closed (that is, when the fixed contact and the movable contact are close or far away), heat and electromagnetic noise will be generated at the contact.
In addition, when the current transformer is housed in the case of the remote control relay, the above-mentioned heat and electromagnetic noise may also affect the current detection by the current transformer.

Method used

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Embodiment Construction

[0031] Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

[0032] Such as figure 1 As shown, this embodiment has: a contact, which is composed of a fixed contact 11 and a movable contact 12; an electromagnet device 2, which drives the movable contact 12 to approach or move away from the fixed contact 11 according to a control signal input from the outside ( That is, the contact 1 is turned on and off); the current transformer 3 detects the current flowing between the fixed contact 11 and the movable contact 12 (that is, the contact 1); the housing 4 accommodates the contact 1 and the electromagnetic Iron device 2 and current transformer 3. below, up, down, left, right figure 1 (a) as a basis, the figure 1 The up-down direction in (b) is referred to as the front-back direction.

[0033] The housing 4 includes: a main body 41 with a recessed portion opened on the front; The main body 41 and the cover 42 are e...

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Abstract

The invention provides a remote control relay that hard to bring influence to current detection by heat and electromagnetic noise generated accompanying adjacency or distance of a fixed contact point and a mobile contact point. The invention is provided with the following components: the fixed contact point; the mobile contact point; a electro-magnet apparatus, which drives the mobile contact point to get close to or far away from the fixed contact point according to control signal input from outside; a current mutual inductor, which detects electrical current between the fixed contact point and the mobile contact point; and a housing, which collects the fixed contact point, the mobile contact point, the electro-magnet apparatus and the current mutual inductor respectively. The current mutual inductor is arranged at the opposite side of the fixed contact point and the mobile contact point inside the housing separated by the electro-magnet apparatus. Regarding to the electro-magnet apparatus, comparing with the current mutual inductor arranged at the same side with the fixed contact point and the mobile contact point, the heat and electromagnetic noise generated by getting close to or away from the fixed contact point and the mobile contact point is hard to bring impact to current detection.

Description

technical field [0001] The present invention relates to remote control relays. Background technique [0002] In the past, there have been provided remote control relays in which contacts and electromagnet devices are respectively accommodated in a housing. The contacts are composed of movable contacts and fixed contacts. The input control signal drives the movable contact to make the contact open and close (on and off) so as to turn on and off the power supply to the load. [0003] In addition, in the feeding system provided with a remote control relay and a control device that sends a control signal to the remote control relay to control the remote control relay on and off, it is equipped with: a current transformer that detects the current flowing in the remote control relay; The current detected by the transformer is used to determine whether there is an abnormality. If it is determined that there is an abnormality, it is an abnormality detection device that reports the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H50/16H01H50/44H01F7/06
Inventor 佐佐木知明中野进今井崇文
Owner PANASONIC CORP
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