module is often called a power semiconductor module, when SCR damage needs to be checked after analyzing its causes, can turn from the cooling tube core, open the core box and remove chips, observe its traces of damage, here small make up teach you four small coup, allows you to quickly distinguish the bidirectional thyristor module damage reason.
1, breakdown voltage, the bidirectional thyristor as cannot withstand voltage and damage, there is a bright holes in its chips, sometimes need to expand mirror to see, the reason may be that the pipe pressure drop itself or by circuit disconnect when the high voltage breakdown.
2, current is damaged, the trace of the current damage is characterized by chip was burned into a pit, and rough, its position in the far away from the control cabinet.
3, current rising rate is damaged, it marks the same as the current damage, and its position in the control of extremely near or on the control cabinet.
4, the edge is damaged, he in chip cylindrical chamfering, with small bright and clean pores, with a magnifying glass to see the chamfer surface finely metal scratches, it lead to the breakdown voltage.
Related to the cause of identifying damage of bidirectional thyristor module is introduced, in this paper, we have to explain more clearly, we can generally understand the, hope to help you, if you have any questions, please continue to focus on our website.
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