High-voltage DC contactor for rail transit

Abstract

The invention discloses a high-voltage DC contactor for rail transit. The high-voltage DC contactor comprises a base, two housings, two assembly shells, a push mechanism assembly and a contact monomer assembly, wherein the push mechanism assembly is arranged at the middle position of the top end of the base; the top ends of the two housings are fixedly arranged at two sides of the bottom end of the contact monomer assembly respectively; the bottom ends of the housings are fixedly connected with the base; the contact monomer assembly is arranged at the top end of the push mechanism assembly and comprises a plurality of normally open contact monomers which are separated by partition plates side by side; the bottom ends of the partition plates are welded and fixed on the housings; and the two assembly shells are clamped at the front ends and the rear ends of the housings. The high-voltage DC contactor for rail transit is simple and compact in structure; a multi-circuit switch line is driven by use of a push plate; and the service life of the contactor is greatly prolonged through designing a bran-new arc extinguishing system.

Description

technical field [0001] The invention relates to the field of design and manufacture of electric switchgear, and specifically designs a high-voltage DC contactor for rail transit. Background technique [0002] With the rapid development of today's market industries (new energy vehicles, 4G communication power supply, wind power generation, rail transit), the requirements for the load and working voltage of high-voltage DC contactors are also increasing. Among them, the range of load voltage requirements for new energy vehicle high-voltage DC contactors In 450V ~ 600V, the load voltage requirement range of rail transit HVDC contactor is 1500V ~ 2000V, and its load capacity is also increased accordingly. In order to solve the arc generated when the traditional contactor is turned on and off at the high voltage load, it cannot be broken. , leading to the failure phenomenon of the main contact burning, in order to improve the service life of the high-voltage DC contactor, it is n...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to provide a high-voltage DC contactor for rail transit to solve the problem of the above-mentioned high-voltage DC contactor arc extinguishing cover not being extinguished in time in the existing contactor technology, causing damage to the contactor and being installed in rail transit lines. its cumbersome etc.

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