module, when an electric current passes through, will produce a certain pressure drop, while the existence of the pressure drop will produce certain power consumption, electric current, the greater the power, the greater the heat.
If you don't put these quantity of heat quickly melted away, will seize the thyristor chip problem.
Therefore requires the use of thyristor module, be sure to install the radiator.
The stand or fall of cooling conditions, is thyristor module can be an important factor of safety work.
Good heat dissipation conditions can not only ensure the thyristor module and reliable work, to prevent overheating module burned down, and can improve the current output ability of thyristor module.
Suggest that users in the use of large current thyristor module specifications as far as possible choose module with overheating protection function.
Of course, even if the thyristor module with overheating protection function, and the radiator and fan is also indispensable.
In use, when the cooling conditions do not conform to the specified requirements, such as room temperature for more than 40 ℃, the export of forced air cooling wind speed is less than 6 m/s, etc. , the rated current of the thyristor module shall immediately reduce use, otherwise the module will be damaged due to the chip junction temperature exceed allowable values.
For example, air-cooled module should be adopted according to the rules and using the cold, the current rating should be reduced to the original value of 30 ~ 40 [
And vice versa if instead of using water, the current rating can increase 30 ~ 40 [
In order to help users choose the radiator and fan, we determined the different models of thyristor module under its rated current working status, the environment temperature of 40 ℃ when the required length of the radiator, fan specification, quantity, basic parameters of the radiator, please refer to the instruction.
In addition, in the form issued by each type of thyristor module in the peak pressure drop, the maximum nominal current and impedance load under the condition of power consumption value, so that the user's own determining radiator size for your reference.
In practice, attention should be paid to the following: (
Axial flow fan wind speed should be & ge;
If the thyristor module short of a full, reduction the length of the radiator.
Before starting the device, should check whether all screw thyristor module and firm, if there is loose, tighten the screws, so that the module backplane and radiator surface and module can close contact between the electrodes and the terminals, to achieve the best cooling effect.
Using natural cooling form, must ensure that the ambient air to the natural convection radiator.
For water cooling effect is good, has a water cooling conditions, should be the preferred water cooling form.
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If interested in our thyristor module or there is doubt, welcome your consultation.
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