Method for evaluating the mechanical performances of a switchgear device and switchgear device for implementation of said method

摘要

The invention relates to a method for evaluating the mechanical performances of a switchgear device comprising at least one pole. Each pole comprises:
a pair of contacts (12, 14);a support arm (16) for a first contact (14);a mechanism (22) for driving the support arm (16) comprising a rotary poles shaft (20) and energy accumulation means capable of driving a movement of the said arm in order to place the contacts (12, 14) in an open position.;The method consists in:
measuring the angle of rotation (θ) of the poles shaft (20) over a period of opening the contacts (12, 14);retrieving from the measurements at least one specific value;comparing the said specific value with specific initial operational specifications of the switchgear device;diagnosing the mechanical wear performances of the drive mechanism (22) as a function of a comparative state between the specific values obtained and those of the operational specifications.

主权项

1. A method for evaluating mechanical performances of a switchgear device comprising at least one pole, each pole comprising:
a pair of contacts that are mobile with respect to each other between an open position and a closed position; a support arm for a first contact; a drive mechanism configured to drive the support arm, comprising:
a rotary poles shaft and at least one rod which couples the drive mechanism to the support arm in a pivoting manner,an energy accumulator configured to drive a movement of the said arm in order to place the contacts in an open position; wherein the method comprises:
measuring an angle of rotation of the poles shaft over a period of opening the contacts;retrieving from the measurements at least one specific value depending on a first point of inflection on a curve of variation of the angle of rotation of the poles shaft, the said point of inflection corresponding to the time at which the poles shaft reaches a maximum speed of rotation and where the electrical contacts lose contact;comparing the said specific value with initial operational specifications of the switchgear device;diagnosing the mechanical wear performances of the drive mechanism as a function of a comparative state between the specific values obtained and those of the operational specifications.