What is the tripping method of microcomputer protection?
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During the test, I found that the tripping methods of microcomputer protection are different. If the quick-break current is continuously added, the tripping contacts of some protections will always operate. Some protections will operate instantaneously, and then instantaneously again every few seconds. Which one is reasonable? Are there any relevant standards?
Microcomputer protection generally has several types of protection that cooperate with each other, such as three-stage current protection. If the current stage acts, the current stage will return. When the previous stage acts and the overcurrent still exists during the next cycle of detection, the current level protection will act again. The test can add different signals based on the difference between the fixed values, and then you can test whether the various protections can operate reliably. Non-electricity protection is simpler, just add the switch value.
Usually it is a shunt movement. If it is moved for a long time and there is an accident, it may burn the coil.