Abstract
Based on the analysis of the existing classification of low-voltage electromechanical devices, it was proposed, on the basis of the functions performed, to unite into the group of electromagnetic mechanisms the indicating relays, vacuum contactors, time relays with clockwork, and executive bodies of circuit breaker releases. The definition of launching devices is given, the main feature of which is a mechanical characteristic, the change of which, with appropriate coordination with the traction characteristic of an electromagnet, can lead to an improvement of the most important characteristics of these devices, such as power consumption and resistance to mechanical influencing factors. On the example of the calculation of the index relay, it is shown and experimentally confirmed that a change in the initial force of the mechanical characteristic and its rigidity leads to a decrease in power consumption while maintaining shock stability.
Highlights
In the literature [1, 2], low-voltage electromechanical devices (EMA) are classified according to a number of signs.Selected [3] is a subclass of power electromagnetic mechanisms (EMM), which, according to its functional purpose, is divided into three characteristic groups: drive, holding and push.in our opinion, it is expedient to single out a group from the whole variety of EMM, which, according to its functions, does not quite fit into the classification given
The contact system (CS) and the pointing mechanism (PM) are in the cocked position due to a special protrusion on the disk of PM resting on the anchor of the EMM
A common feature that unites this group of EMMs is their mechanical characteristic, which, unlike EM-driven relays and contactors, has the form of a straight line, due to the action of the return spring only, which has a significant impact on the design methodology and performance
Summary
In the literature [1, 2], low-voltage electromechanical devices (EMA) are classified according to a number of signs.Selected [3] is a subclass of power electromagnetic mechanisms (EMM), which, according to its functional purpose, is divided into three characteristic groups: drive, holding and push.in our opinion, it is expedient to single out a group from the whole variety of EMM, which, according to its functions, does not quite fit into the classification given. Selected [3] is a subclass of power electromagnetic mechanisms (EMM), which, according to its functional purpose, is divided into three characteristic groups: drive, holding and push.
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