Permanent magnetic mechanism switch

Abstract

The invention relates to a permanent magnetic mechanism switch which comprises a permanent magnetic type electromagnetic operating device, a disk-shaped switch, a baffle plate and a travel control switch, wherein the permanent magnetic type electromagnetic operating device is arranged above the baffle plate; the disk-shaped switch is arranged under the baffle plate; the disk-shaped switch is connected with one end of the permanent magnetic type electromagnetic operating device through a transmission mechanism; and the other end of the permanent magnetic type electromagnetic operating device is connected with the travel control switch. A push-pull electromagnet structure is adopted so that starting current is greatly reduced; the application range of the permanent magnetic mechanism switch is enlarged; an energy storing circuit is simplified; the cost is greatly reduced; positive and negative magnetic force perform action at the same time; and action reliability is greatly enhanced.

Description

technical field [0001] The invention relates to the field of power consumption and distribution, in particular to a permanent magnet mechanism switch. Background technique [0002] The existing on-load tap changer has complex structure, large volume and high cost. Taking the common 10kV / 0.4kV distribution transformer as an example, one end of the base is fixed with a motor, and the other end is like a cage placed horizontally , there is a rotating shaft connected to the motor. If it is a 3-speed voltage regulator, there are 3 insulating horizontal narrow strips on the cage, distributed along the circumference. There are three fixed contacts on each strip, which are connected to the same gear of the high-voltage three-phase coil. On the tap of the bit, the rotating shaft is the neutral point of the three phases. Three three-phase moving contacts are fixed on the rotating shaft, and each moving contact includes a main contact and an auxiliary contact. The main contact is conn...

AI Technical Summary

Problems solved by technology

Moreover, this kind of voltage regulating switch is expensive, and it is not suitable for large-scale promotion in 10kV power distribution occasions.

[0003] Although the off-excitation voltage regulation (no-load voltage regulation) switch is relatively low in cost, it has some inherent disadvantages: one is that it must be operated in the state of no excitation of the transformer, and it needs a certain power outage time to adjust, which interferes with normal production; the other is manual operation. Operation, the number of adjustments is limited, only periodic or seasonal adjustments can be made, and cannot be performed frequently, and the voltage fluctuations caused by daily peak and valley changes cannot be controlled, and the continuity and reliability of power supply cannot be well guaranteed

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