Abstract:

Aiming at the problem of leakage function failure caused by too large tripping force of circuit breaker,the output force of residual current release,as the key parameter of electronic residual current device(RCD),is the key point of improvement.This paper compared the design principle of the existing residual current release,focused on the design description and force value amplification principle analysis of this electronic residual current release amplification mechanism,and tested the improvement of residual current performance caused by the electronic residual current release amplification mechanism.It is hoped that this electronic residual current release amplification mechanism can provide a new design idea for domestic manufacturers.

Key words: residual current release, tripping force, design principle, amplification mechanism