Method for measuring contact depth of movable and stationary contacts of breaker handcart

Abstract

The invention provides a method for measuring contact depth of movable and stationary contacts of a breaker handcart. The method comprises the following steps: preparing a measuring paper board; measuring contact depth of the movable and stationary contacts, sleeving the measuring paper board on the stationary contact so that the distance from the measuring paper board to the end face of the stationary contact is 4mm to 5mm; charging the breaker handcart in a rocking manner so that the breaker handcart reaches a position connected with a valve mechanism, pushing the measuring paper board to move on the stationary contact by using a quincuncial contact so that the measuring paper board can finally reach a maximum depth contact position of the quincuncial contact and the stationary contact; discharging the breaker handcart in a rocking manner, and measuring the size from the left end face of the stationary contact to the measuring paper board by using a millimeter steel plate ruler. The method disclosed by the invention has the effects that by utilizing the normal working position of the handcart, the contact depth can be obtained by just measuring one distance size, the measurement error is + / -0.5mm and reduced, and the measurement accuracy is improved. The measurement can be implemented by operation time of one-step charging and discharging of the breaker handcart in a rocking manner; with addition of the preparation time of the measuring paper board, the total measurement time is only 2 minutes, so the measurement speed is five times the original speed.

Description

technical field [0001] The invention relates to a method for measuring the contact depth of moving and static contacts of a handcart of a circuit breaker, which is suitable for the installation of the moving and static contacts of a handcart of an armored removable AC metal-enclosed switchgear circuit breaker. Background technique [0002] At present, when assembling the armored and removable AC metal-enclosed switchgear, in order to ensure that the electrical contact meets the requirements, it is necessary to check or adjust the contact depth between the plum blossom contact 2 and the static contact 4 of the handcart. The common method is to select the benchmark and calculate the size Poor method of measurement, the measurement is cumbersome, and the error is large. Therefore, there is a need for a convenient, fast and effective method for measuring the contact depth. Contents of the invention [0003] Aiming at the structural deficiencies of the prior art, the purpose o...

AI Technical Summary

Problems solved by technology

[0002] At present, when assembling the armored and removable AC metal-enclosed switchgear, in order to ensure that the electrical contact meets the requirements, it is necessary to check or adjust the contact depth between the plum blossom contact 2 and the static contact 4 of the handcart. The common method is to select the benchmark and calculate the size Poor method of measurement, the measurement is cumbersome, and the error is large

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