Air compressor motor burned Situation Analysis - short circuit caused by metal particles

Inclusion winding metal chips are limited circuit and floor insulation price is very low culprit. Vibration during the course of natural procedure on the compressor, and every time you start winding by electromagnetic force and twist, will boost inclusion in between the winding and winding enameled metallic shavings in between the relative movement and friction. Sharp edges will scratch enameled steel shavings insulation, causing a brief circuit.

Sources include the development of metallic shavings still left powering brass scrap, slag, compressor deterioration inner wear and spare pieces (which include broken valve) is slipping steel chips. For full-hermetic compressors (as well as hermetic scroll compressor), these steel shavings or crushed will slide relating to the windings. For semi-hermetic compressors, some particles while using the gas circulation inside of the strategy additionally, the lubricating oil, and at last gathered considering the magnetic windings; and (manufactured this sort of bearing use and motor rotor and stator wear (sweep chamber) when) some metal shavings will straight relating to the winding. Winding metal shavings gathered after the small circuit occurs only a make a difference of time.

We need to attract unique recognition towards the two-stage compressor. Inside the two-stage compressor, the return air and return to standard oil directly in to the primary stage (low amount) cylinder, compressed through the force tube in the motor winding cooling chamber, then, and ordinary single-stage compressor, as being the next stage (high-grade cylinder). Again gas with oil, to ensure that the compression practice has become skating on slender ice, if we've again to liquid, the primary phase from the cylinder valve can easily be broken. Broken valve following the tension tube can enter the winding. So, two-stage compressor motor shorter circuit takes place because of metallic shavings a lot easier than single-stage compressors.

Sadly i must say, factors are often times conspire, compressor difficulty at boot time information channel assessment is usually lubricating oil burning. Badly worn steel surface temperature is extremely large, also, the lubricating oil 175 & ordm; C over at the beginning of coking. Structure, if there is added moisture (vacuum pits just isn't ideal, lubricants and refrigerants good sized drinking water content, air enters negative return pipe rupture, and so forth.), lubricants may occur acidity. Acidic oil will corrode the brass as well as coil winding insulation, about the just one hand, it could cause copper phenomenon; relating to the other hand, the poor operation of copper atoms containing insulation acidic lubricating oil provided the issues for the winding short.