module is the heart of the medium frequency power supply, its correct use is essential to the operation of intermediate frequency power supply.
A medium frequency power supply damage a year SanWuZhi MTC thyristor module is normal, if MTC thyristor module often burn, electric furnace lockout, affect the production, will cause alarm.
MTC the working current of thyristor module from several hundred to several thousand Ann Ann, usually in a couple of kv voltage, good master plate protection and good water conditions is essential.
Because the MTC thyristor module has overload characteristics, the damage of the thyristor is called the breakdown.
Under normal water condition, the current overload capacity can reach more than 110%, no voltage overload ability, that is to say, MTC thyristor module in overpressure situation, is certainly damage.
Again considering the surge voltage, many manufacturers in producing intermediate frequency power supply, usually 3 - according to the working voltage
Four times the value to select the MTC thyristor module.
Intermediate frequency, for example, ark of rated voltage is 750 v, choose 2 only withstand voltage 1400 v MTC thyristor module series, the equivalent of 2800 v voltage value.
Silicon controlled properly installed pressure, 150 -
In medium frequency power supply factory, general is to use hydraulic press pressure equipment.
Artificial with ordinary wrench with maximum strength also amounted to less than the value, so when people work pressure, unnecessary worry MTC thyristor module will be pressure bad, pressure is loose, it will burn out due to poor heat dissipation make MTC thyristor module.
MTC thyristor module structure of radiator, water cooling cavity + more copper column support.
If circulating water too hard, will be in the water chamber internal scale, due to poor heat dissipation, if the water cavity into the debris such as leaves, also can cause water not free.
MTC thyristor module factory test temperature is 100 ℃, and junction temperature, in general, medium frequency power supply loop water temperature below 40 ℃ can ensure that its normal work.
Remarkably portable infrared thermometer is useful, 350 ℃ temperature measuring instrument to hundreds of yuan, not too expensive.
Use it to measure the working power supply of MTC thyristor module and radiator temperature, can be found abnormal points in time, deal with failure.
It is important to note the mesa radiator must match the element size mesa, prevent partial pressure, pressure slanting, and damage to the device.
The radiator mesa must have high level off, smooth finish.
Suggested that the radiator surface roughness is less than or equal to 1.
6 microns, flatness less than or equal to 30 microns.
The thyristor module components and radiator mesa mesa when installation should keep clean, clean, no oil dirt, etc.
When installation should keep thyristor mesa mesa completely parallel, concentric with the radiator.
The installation process, the pressure on the request by the center line of the element, so that the pressure distribution in the contact area.
When user manual installation, it is recommended to use the torque wrench, tighten nut for all alternate uniform pressure, the size of the pressure to achieve specified requirements.
When repeated use water-cooled radiator, should pay special attention to check whether the surface bright and clean, smooth, if there is a scale water cavity and congestion, especially pay attention to whether mesa appear subsidence of circumstance, if the case should be replaced.
Zhejiang rectifier co. , LTD. , the production of various kinds of specifications models of thyristor module, MTC thyristor modules, solid state relay module, rectifier bridge module, such as supporting the radiator products, sincerely look forward to the cooperation with various companies and procurement staff, provide affordable, quality and reliable electronic components.
Consultation telephone: 0577 -
62627555, we serve you wholeheartedly!
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