Fan does not turn, recyclers to only five dollars, fan capacitor

Electric fan isn't in the home, most of these situations capacitance is broken, today we meet capacitor on the fan. Have a look at how to according to the fan power distribution capacity? How to judge the stand or fall of capacitance?

CBB capacitor

first of all, we look at the information above, polystyrene capacitor CBB is nonpolar, is its model 61, 1. 5 uf is its capacity, plus or minus 5% error is its capacity, SH it is self-healing capacitor. 450 vac shows that it is the withstand voltage value of ac 450 v, 50/60 hz is working power supply frequency, 25/70/21 is its working environment, low temperature 25 degrees below zero to high temperature of 70 degrees can be normal work, 21 is the number of days under the condition of temperature and humidity test, corresponding to the level of its C CBB61 capacitor has A, B, C three levels, the corresponding capacitor is life, respectively for 3000 h C, B 10000 h, A level 30000 h. P0 is its level of explosion-proof, if the number is 0 is certainly not explosion-proof, if it is 1, 2 is the corresponding level.

CBB capacitor

this marking is slightly different, but the information is similar.

pick capacitance

motors usually have three lines, use multimeter two measure resistance, the two largest wire resistance capacitance directly.

the wiring diagram

this is wiring diagram for your reference, the connection with slightly different electric fans.

if the fan is not identified as capacitance is broken, can according to the model with a bad capacitor, if have no capacitance, can reference I give value.

about 40 w fan 1 - can be used - 1. 5 uf capacitance, around 70 w electric fan can use 2 uf capacitance, around 180 w electric fan can use about 3 uf capacitance. If too much capacitance motor burning, capacitance is too small start up, as long as no more than 20% of the standard distribution capacity can be.

multimeter capacitance profile measuring capacitance

test must first discharge, these are a few small capacity of the capacitor, can the poles quick touch a few times. After discharge the multimeter to capacitance, direct red and black pens and each contact with a capacity can be measured. If abnormal capacity or reduce a lot of it needs to replace.

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