Intermediate frequency furnace startup thyristor trigger pulse discharge

by:Hengyang Furnace     2020-10-08
Intermediate frequency furnace startup thyristor trigger pulse discharge technology encyclopedia 2 tons of intermediate frequency furnace KK thyristor often burn out is what reason medium frequency furnace startup thyristor trigger pulse discharge answer: I think is a problem of circuit board, also encountered a similar situation before, some time ago I saw a similar article, you can search the website of the divine radiation electric furnace technology information, should be able to find a solution. Intermediate frequency furnace thyristor inverter how to understand? Intermediate frequency furnace startup thyristor trigger pulse discharge a: : intermediate frequency voltage is AC square-wave dc voltage, dc signal is both no comparability and, in the inverter AC - DC - AC - ac - Dc dc stage if there are two such a process, intermediate frequency voltage and level off first, before it is intermediate frequency voltage amplitude = power grid after the rectifier voltage if the intermediate frequency with the relationship between the output dc voltage. How thyristor medium frequency furnace with a: according to the P = U * I calculate can thyristor needs to consider two basic factors: 1, 2, current withstand voltage. Intermediate frequency electric furnace silicon controlled thyristor how good or bad is measured with a digital multimeter intermediate frequency furnace startup thyristor trigger pulse discharge a: ha ha, hit the diode conduction gear. Whether the positive and negative conduction, as bad. Then use pens and the emitter, the fine of the conductor. Then the side across the electrodes and conduction. If with the side as well, if only blocked or all bad. I forgot is with the very general, anyway I am such a test. But all attachment have taken away. Or inaccurate. Failure 1 failure phenomenon: intermediate frequency furnace large dc current when starting, low voltage dc voltage and frequency and over-current protection device and start the deep voice. Analysis: there is a bridge inverter bridge arm of the thyristor may cause short circuit or open circuit inverter bridge running three arm bridge. Oscilloscope were observed four bridge inverter bridge thyristor (tube voltage waveform on the arm of the if there is a bridge. If the test medium frequency electric furnace SCR is normal in the tank? Intermediate frequency furnace startup thyristor trigger pulse discharge a: element to take off the open circuit. RX10K multimeters resistance measurement of silicon controlled two main line, black, red pens and switch time, two measuring resistance should be infinity, the silicon controlled 99% basic is good, because the damage is breakdown SCR short circuit state. If you don't trust, can be measured again trigger conduction ability, with RX1, measuring single phase SCR, meet the positive black pen. How the online measurement of intermediate frequency electric furnace thyristor is good or bad? Everyone help answer: online should pay attention to safety, not to teach you the method of electricity, stop the heating time, high temperatures for short circuit, high heating temperature for a period of time the bottom open, novice had better not charged detection. Thyristor medium frequency furnace type KK with KP, alternative? Thank you to answer: can not be replaced in the intermediate frequency furnace, KP type silicon controlled rectifier used for rectifier circuit. KK type used in inverter circuit. Thyristor inverter cabinet, intermediate frequency furnace is how it works? Answer: the unidirectional and bidirectional silicon controlled silicon controlled thyristor points two kinds, are three electrodes. One-way thyristor is cathode ( K) And the anode ( 一) And control ( G) 。 Bidirectional thyristor is equivalent to two single SCR reverse in parallel. Is one of the one-way silicon anode and cathode in the other side, said the terminal T2, one of the one-way silicon cathode and anode the other. What are the fault medium frequency furnace control circuit? Intermediate frequency furnace startup thyristor trigger pulse discharge a: summary of intermediate frequency electric furnace maintenance with instance thyristor medium frequency power supply device referred to as the thyristor intermediate frequency device, is the use of thyristor switch features of 50 hz power frequency current into intermediate frequency current of a power supply device ( 20KHz- - 80千赫) Mainly in the induction melting, induction heating, induction quenching and so on are widely used in the field. Its advantages are: high efficiency thyristor power supply. Intermediate frequency furnace startup thyristor trigger pulse discharge ask ace: technical data about the related knowledge of intermediate frequency furnace, rectifier, inverter, intermediate frequency furnace startup thyristor trigger pulse discharge a: medium frequency furnace is will power frequency 50 hz alternating current into intermediate frequency ( More than 300 hz and 20 KHZ) Electricity, will the frequency of the current change, live to step is the rectifier and inverter, rectifier is 50 hz alternating current into direct current, direct use of the whole bridge rectifier bridge, rectifier bridge model there are many online, according to the size of the current selection. Inverter is to change to dc back to alternating current (ac).
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