Circuit breaker suitable for debugging delay tripping

Abstract

The invention relates to the technical field of circuit breakers, in particular to a circuit breaker suitable for debugging delay tripping, comprising a circuit breaker main body and a delay trippingassembly; the circuit breaker main body comprises a shell, a traction assembly rotationally arranged in the shell and an opening mechanism arranged in the shell; the delay tripping assembly comprisesa heating element, a bimetallic strip arranged on the heating element, a debugging fixed plate arranged in parallel with the heating element, a debugging piece movably arranged on the debugging fixedplate for being abutted against the heating element to swing, and a reset piece for driving the heating element to reset; a gap is formed between the debugging fixed plate and the heating element, andthe bimetallic strip is heated, bent and is abutted against the traction assembly to rotate so as to enable the rotating traction assembly to trigger the opening mechanism to be switched off. The position of the debugging piece in the invention on the debugging fixed plate is unchanged, thereby guaranteeing the position precision of the debugging piece, facilitating automatic debugging equipmentto be aligned with a debugging part; and the delay tripping assembly of the structure is suitable for automatic debugging of the circuit breaker.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a circuit breaker suitable for debugging time-delay tripping. Background technique [0002] Existing circuit breakers, especially single-breakpoint circuit breakers, are not convenient for automatic debugging of circuit breakers. The core reason is that they have design defects that are not suitable for automatic testing: 1. The bimetallic strip and The heating element is fixed, and secondly, the position of the adjusting screw on the bimetal sheet changes with the heating and deformation of the bimetal sheet, resulting in that the screw cannot be aligned with the adjusting screw for adjustment during the automatic test; 2. The bimetal sheet and its time-delay release assembly There are deviations in the position of self-assembly and inconsistency in the position of the adjusting screw, which makes it difficult for the screw rod of the automatic test to align with the ad...

AI Technical Summary

Problems solved by technology

[0002] Existing circuit breakers, especially single-breakpoint circuit breakers, are not convenient for automatic debugging of circuit breakers. The core reason is that they have design defects that are not suitable for automatic testing: 1. The bimetallic strip and The heating element is fixed, and secondly, the position of the adjusting screw on the bimetal sheet changes with the heating and deformation of the bimetal sheet, resulting in that the screw cannot be aligned with the adjusting screw for adjustment during the automatic test; 2. The bimetal sheet and its time-delay release assembly There are deviations in the position of self-assembly and inconsistency in the position of the adjusting screw, which makes it difficult for the screw rod of the automatic test to align with the adjusting screw, so the automatic debugging of the delayed tripping of the circuit breaker cannot be realized

Images