Intermediate frequency furnace starting with no response

by:Hengyang Furnace     2020-10-07
Intermediate frequency furnace starting without big shock when an intermediate frequency furnace startup reaction technology, current couldn't get on. Excuse me, is what reason. Intermediate frequency furnace starting the unresponsive answer: electric capacitance breakdown probability, then have a current without intermediate frequency voltage, frequent starting; Intermediate frequency feedback signal after the will appear this kind of problem. What is the principle of intermediate frequency furnace? A: the working principle of intermediate frequency power supply for: the three-phase bridge type all control the ac rectifier for dc rectifier circuit, after the flat wave reactor, became a constant dc current source, then through single phase inverter bridge, the dc current inverter with a certain frequency ( Generally between 1000 and 8000 hz) The single-phase medium frequency current. Load is composed of induction coil and compensating capacitor, connection. Starting igbt medium frequency furnace, the dc current is normal, but the master board shows a: drive generally only under-voltage fault and fault, if you do not determine both fault, try using block driver. Starting dc intermediate frequency furnace, the main control panel display driver fault, after the reset can answer: if the test normal check display board is a 24 foot patch around 2138, is a coding IC is easy to bad, but not necessarily have a long time not repair the machine remember not too clear, hope to help you. Intermediate frequency furnace and maintenance of the principle of intermediate frequency furnace starting the unresponsive answer: the working principle of intermediate frequency power supply as follows: the three-phase bridge type all control will ac rectifier for dc rectifier circuit, after the flat wave reactor, became a constant dc current source, then through single phase inverter bridge, the dc current inverter with a certain frequency ( Generally between 1000 and 8000 hz) The single-phase medium frequency current. Load is composed of induction coil and compensating capacitor, connection. Intermediate frequency furnace current w1 couldn't get on the circuit boards also have no reaction, I remember a: before the feedback resistance increasing on the transformer. Over 500 kg of intermediate frequency furnace current tuning is what problem a: well, what do you mean, in a minute after whether iron oxide red, if it is, for two reasons. First after more than seven hundred and thirty degrees Celsius temperature more than Curie temperature, the hysteresis effect of iron didn't, current will decrease, and the second iron red after eddy current reduced, because red iron oxide resistance increased, so the drop in current. Ha ha if not assemble themselves. Who know how to judge it pulse of intermediate frequency furnace medium frequency furnace starting the unresponsive answer: whether pulse rectifier ( On the control panel of six small pulse transformer) , or the inverter pulse ( Installed in other places, according to each intermediate frequency furnace manufacturers use different pulse pulse transformer, a single transformer, there are also two transformer in a small circuit board, there are four transformer on a circuit board) 。 But the edge of each transformer has a red. What are the common faults intermediate frequency furnace? A: common fault analysis and processing method of intermediate frequency furnace: first: fault phenomenon: equipment cannot be started, started only dc ammeter have instructions, dc voltage no instructions, intermediate frequency voltage. Analysis: a has short pulse trigger inverter phenomenon; B thyristor inverter breakdown; C capacitor breakdown; D load has a short circuit, grounding phenomenon; E intermediate frequency signal. Crane remote control whether there is interference of intermediate frequency furnace, in driving up and down or starting up a: phenomenon of interference is not recommended for control driving easy out of control or no response. Intermediate frequency furnace starting no response technical data
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