With the application of thyristor
module in the industry, the development of thyristor, the more happy.
Current capacity from a few to thousands of Ann, Ann stress levels increased from a few hundred volts to several kilovolts.
However, in use process, thyristor is very sensitive to overvoltage.
Over current also have tremendous damage effect to the thyristor.
What can you do to better to protect thyristor module?
Specific as follows: because of the semiconductor device has a smaller thermal capacity and small volume, especially such as thyristor module power at high voltage large current device, junction temperature must be strictly controlled, otherwise will have to completely damaged.
Flows when the thyristor module is greater than the current rating of the, no heat, make the junction temperature rise rapidly, will eventually lead to burn the knot layer.
Causes of over current is varied, for example, a thyristor module converter device itself is damaged, trigger circuit fails, the control system failure, etc. , as well as the ac power supply voltage is too high, too low, or lack of phase, overload or short circuit load, adjacent equipment failure.
Thyristor module overcurrent protection method is the most commonly used quick fuse.
Due to the common fuse fusing feature too slow, before the fuse fusing thyristor has been burned;
So can't be used to protect the thyristor.
Quick fuse by silver fuse is buried within the quartz sand, melting time very short, can be used to protect thyristor.
The performance of the quick fuse basically has the following several characterization.
Thyristor module true experts, in order to your satisfaction, we really heart.
If interested in our thyristor module or there is doubt, welcome your consultation.
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