【文章內(nèi)容簡介】 ters in the design should pay attention to the following issues 1) heat: Inverter fever is the internal loss. In the frequency converter in the main part of the loss mainly to the main circuit, or about 98 percent, accounting for 2% of control circuits. In order to ensure reliable operation of the normal inverter, Thermal must inverter are usually used for cooling fan。 converter fan of the contents of the converter box can be removed internal heat, if the fan does not work, should immediately stop inverter Operation。 the highpower inverter also need to increase control Guishang fan, Control of the wind, to design a reasonable, all outlet into the to set up dust, exhaust open, to avoid over the counter in a swirl, in a fixed location dust Accumulation, according to the statement converter ventilation fans to select the match, fans installed to the attention of earthquake problems. 2) the problem of electromagic interference Converter in its work due to rectification and frequency, produce around a lot of electromagic interference, these highfrequency electromagic waves in the vicinity of the instrument, apparatus, a certain interference, and will produce high harmonics, the high harmonics will be available for adoption Xinhua loop into the whole power supply work, thus affecting other instruments. If the power inverter system as a whole lot of more than 25 percent, to be considered the antijamming measures to control supply. When the system in the highfrequency welding machine such as the impact load, electroplating power, the converter itself will appear as interference protection, to consider the whole system of power quality problems. 3) protection issues need to pay attention to the following points Waterproof anticondensation: If the converter on the scene, the need to pay attention to the frequency converter Guishang not have the flange or other pipeline leak, the inverter can not be near the water splash, sum up the scene OEM Switchgear Kits amp。 level of security to IP43 above. BOOT: All outlet into the to set up dust debris into the barrier floc, dust work should be designed to be removable, to facilitate the cleanup, maintenance. Dust of the grid work in accordance with the specific circumstances at the scene determined that dust around the and Control Department to handle the bination of tight. Anticorrosive gases: the chemical industry in this relatively Most of this can be on the frequency counters in the control room. (4) converter cable norms Signal lines and power lines must be separately alignment: the use of analog signal converter for remote control, in order to reduce the analog converter and other equipment from the interference, please control signal converter line with the strong electric circuit (H Circuitandloop) separate alignment. Distance should be 30 cm above. Even in the control cabi, the same connection to maintain such a standard. The signal converter and the control should not be longer than the road back to 50 m. Signal lines and power lines must be placed in different metal pipe or metal hose internal: connect PLC and the signal converter if not placed in metal tubes, Drives and vulnerable to external interference equipment。 because the converter No builtin the reactor, so the converter input and output level of external power line will have a very strong interference, placing the signal lines of metal or metal hose has to be extended to the inverter control terminal, to ensure that the signal Line and the plete separation of power lines. 1) analog control signal line should use twostrands shielding line, cable specifications for mm2. When the wiring mus