Three-phase magnetic latching relay with symmetrically distributed input and output

Abstract

The invention discloses a three-phase magnetic latching relay with symmetrically distributed input and output. The structure of the three-phase magnetic latching relay comprises three parts: a housingpart, a control loop part, and a magnetic circuit system part; the housing part consists of a housing, an upper cover, and a lower cover. The control loop part comprises an L1 control group loop, anL2 control group loop, an L3 control group loop and a mutual inductor; each set of control loop consists of a movable contact, a movable spring seat, a movable reed, a static contact and a static spring seat. The magnetic circuit system part comprises a coil rack, a support, a pushing sheet, a magnetic steel assembly, an enameled wire, an iron core and a yoke. A traditional interval type wiring three-phase electric meter connecting terminal is inconvenient to connect if a novel electric meter design scheme is adopted. Symmetrical wiring three-phase electric meter connecting terminals are adopted, so that the novel electric meter is adopted to be matched with the symmetrical three-phase magnetic latching relay, the design scheme is convenient, materials are saved, and cost is greatly reduced.

Description

【Technical field】 [0001] The invention belongs to the technical field of relay equipment, and in particular relates to a three-phase magnetic latching relay whose input and output are symmetrically distributed. 【Background technique】 [0002] With the continuous development of the national smart grid, prepaid meters are more and more widely used in the power grid. The use of three-phase meters is extremely extensive. The models and specifications of three-phase meters are different. They can be classified into two types according to the wiring. One is The traditional spaced wiring three-phase ammeter, the other is the new symmetrical wiring three-phase ammeter, the traditional spaced wiring three-phase ammeter connection port is that the L1 phase is distributed at the port input port output, and the L2 phase is distributed at the port input port Port output, the L3 phase is distributed in the port input port output, and the neutral line is distributed in the port and port. T...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a three-phase magnetic latching relay with symmetrical distribution of input and output to solve the problem that the traditional three-phase relay wiring used in the built-in three-phase electric meter with symmetrical wiring is cumbersome and not conducive to the user's design scheme, and the manufacturing cost will also be high. The problem of increased magnitude

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