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Three-phase meter magnetic latching relay with manganin shunt

A technology of magnetic latching relays and manganin shunts, which is applied in the direction of electromagnetic relays, electromagnetic relay details, relays, etc., can solve the problem of manganin shunt resistance to power frequency magnetic field interference, and transformer measurement schemes are susceptible to constant magnetic fields and DC components Effects and other issues, to improve the ability to resist constant magnetic field and DC component, reduce design difficulty and cost

Inactive Publication Date: 2021-01-12
QINGDAO TOPSCOMM COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a three-phase magnetic latching relay with a manganin shunt, which solves the problem that the measurement scheme of the transformer is easily affected by a constant magnetic field and a DC component while maintaining a low cost, and at the same time solves the problem of the manganin shunt The problem of anti-power frequency magnetic field interference

Method used

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  • Three-phase meter magnetic latching relay with manganin shunt
  • Three-phase meter magnetic latching relay with manganin shunt
  • Three-phase meter magnetic latching relay with manganin shunt

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Embodiment Construction

[0016] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0017] Such as Figure 1 to Figure 3 As shown, this embodiment provides a three-phase magnetic latching relay with a manganin shunt, including: a three-phase magnetic latching relay 1 , an external magnetic shield, a manganin shunt 2 and brass terminals 3 .

[0018] The three-phase magnetic latching relay has three-phase load on-off capability, and performs on-off control and state feedback through the drive control line and state feedback line 6 .

[0019] When the three-phase magnetic latching relay is in the closing and conducting state, the manganese-copper shunt provides the current sampling signal, and the measurement of the electric energy meter is realized by connecting the current sampling line to the measurement chip on the PCB board. The manganin shunt includes manganese copper sheet, red copper sheet and current sa...

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Abstract

The invention discloses a three-phase meter magnetic latching relay with a manganin shunt. The three-phase meter magnetic latching relay is characterized by comprising a three-phase magnetic latchingrelay body, an external antimagnetic cover, the manganin shunt and a brass terminal. Compared with the prior art, the design scheme of integrating the three-phase magnetic latching relay and the manganin shunt is realized, the metering anti-interference capability of the three-phase electric energy meter is improved, and the design difficulty and cost of a metering circuit of the three-phase electric energy meter are reduced.

Description

technical field [0001] The invention relates to the technical field of three-phase smart meters, in particular to a three-phase meter magnetic latching relay with a manganin shunt. Background technique [0002] There are mainly two types of current measurement solutions for smart energy meters: current transformers and manganin shunts, which are usually integrated with magnetic latching relays. The current transformer scheme is to use the principle of electromagnetic induction to convert the large current on the primary side into a small current on the secondary side for measurement. Since the transformer contains a magnetic core and a winding inside, this scheme is relatively susceptible to the influence of a constant magnetic field and a DC component, and generally requires An antimagnetic design is added to the transformer, so there is no advantage in volume and cost. The manganese-copper shunt scheme uses manganese-copper resistor voltage divider for measurement. The di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H50/16H01H50/54H01H51/01
CPCH01H51/01H01H50/54H01H50/16
Inventor 刁瑞朋孙广鑫刘祥波
Owner QINGDAO TOPSCOMM COMM
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