An overcurrent protection relay

Abstract

The present invention relates to the field of relays, specifically an overcurrent protection relay, including a storage structure, a fixed plate, a filter structure, a limit structure, an on-off structure, a control structure, a reset structure and a heat dissipation structure; the filter structure is in conflict with The on-off structure is convenient to drive the filter structure to vibrate through the on-off structure, and it is convenient to intuitively reflect the on-off situation of the on-off structure according to the deformation of the filter structure, and at the same time effectively prevent dust from entering the filter structure. The interior of the storage box, thereby greatly improving the stability of use, when the push rod touches the filter, the filter has a wave-shaped structure, which increases the dust filtering area and makes the deformation of the filter more Large; the control structure is set inside the on-off structure, thereby improving the heat dissipation performance inside the storage structure, and effectively preventing the on-off structure from being damaged by collision with the control structure, thus greatly improving the stability performance.

Description

technical field [0001] The invention relates to the field of relays, in particular to an overcurrent protection relay. Background technique [0002] The overcurrent protection relay integrates protection, single-phase current measurement and control functions, and realizes data sharing and remote control with the remote host through the in-com interface, and realizes data sharing and remote control with the remote host through the in-con interface Function, the overcurrent protection relay realizes the protection of the components through the overcurrent protection action, and the overcurrent protection is generally divided into definite time limit and inverse time limit overcurrent protection, current quick break protection, single-phase grounding protection of the neutral point ungrounded system, It consists of a current relay, a time relay and a signal relay. The current transformer and the current relay form a measuring element, which is used to judge whether the current...

AI Technical Summary

Problems solved by technology

[0003] However, when the traditional over-current protection relay is used in a closed power distribution room, because the signal plate on the over-current protection relay is connected to the inside of the body, dust can easily enter the inside of the over-current relay. When the coil current is too large, The heating of the coil will cause the internal circuit to burn out, and it is inconvenient to dissipate heat inside the relay in a timely manner. When using multiple sets of circuit wiring, when the internal circuit has an overcurrent condition, it is impossible to quickly repair the inside of the relay.

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