The measurement results displayed by the high-voltage switch characteristic tester or the printed current curve and the moving contact movement curve truly reflect the mechanical characteristics of the tested high-voltage circuit breaker. The meaning of the measurement result is grasped, and it can be adjusted quickly, which is helpful for judgment. Failure of the high-voltage circuit breaker. When using a switch characteristic tester, in addition to using the instrument correctly, you must also learn to determine the fault location of the high-voltage switch through the measurement data area of the instrument, which can be solved. This is the ultimate goal.

1. The instrument displays the seam sequence of the high-voltage circuit breaker, so as to provide the sequence of the measured fracture and point out the direction of synchronization of the high-voltage circuit breaker fracture. For example, the three-phase or the same phase of the tested high-voltage circuit breaker exceeded the standard in different periods. According to the sequence of joint fracture (min) displayed by the instrument, the fracture length of the combined (min) door* phase can be adjusted. The disconnection length of the slowest phase of the brake is shortened, that is, the three-phase or different time periods of the same phase of the tested high-voltage circuit breaker can be easily adjusted to the qualified range.

2. According to the instrument, the bounce time and printed current waveform diagram of the tested high-voltage circuit breaker can reflect whether the fixed contacts of the tested high-voltage circuit breaker are installed concentrically and the contact ablation, for example, if the tested high-voltage circuit breaker If the bounce time exceeds the standard time, the curve will have a breakpoint on the printed current waveform. At this time, according to the length of time the high-voltage circuit breaker works, it can be determined that the high-voltage circuit breaker is fixed. The contact installation is very different or the contact is severely ablated.

3. According to the stroke characteristic curve of the moving contact printed by the instrument, it can be judged whether the mechanism during the movement period of the joint (branch) of the high-voltage circuit breaker has been stuck. For example, if printed by the measured high-voltage circuit breaker, if there is a pause phenomenon in the recorded curve waveform, at this time, the moving contact stroke characteristic curve of the transmission of the electromagnetic mechanism or the high-voltage circuit breaker is reflected. There is a paper jam in the organization. According to the distance and time of the moving contact, when the paper jam is obtained, the position of the distance and the coordinate on the time travel characteristic curve can be roughly judged.