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Electrolytic capacitor discharge

by:SMiLer     2022-01-08
How electrolytic capacitor discharge power failure in the electric circuit, the capacitor stored has a certain amount of voltage, there are some other load in the circuit or component is slow discharge, can also be artificially with small resistance or wire ( Low pressure) Short circuit rapid discharge. How to operate? Capacitor power failure in the electric circuit, the capacitor stored has a certain amount of voltage, there are some other load in the circuit or component is slow discharge, can also be artificially with small resistance or wire ( Low pressure) Short circuit rapid discharge. Low voltage capacitor discharge resistance, is commonly used in high voltage capacitor discharge is commonly used in coil. Small capacity, short circuit directly discharge line, if high voltage large capacity can only use resistor slowly discharge, or use 100 w incandescent light and electric stove wire electric discharge, the water line (also Is not recommended, however, too large will make water explosion energy) Is ok, remember, don't be short circuit discharge directly, otherwise the instantaneous energy infinity, spark is quite bright, noise and artillery as big, ha ha, not scare you, but I tried, will make people aghast, have life risk. How is the capacitance discharge is safe? Methods: 1, high voltage capacitor discharge to unplug electric power; Using a 200000 ohm, 2 watt resistor, the probe resistor and capacitor terminal together, a capacitor discharge, If the capacitor has three terminal, please put resistor with a rely on outside the terminal and the terminal connection, and then the outside with the rest of the terminal and the terminal connection. Methods: 2, low-voltage capacitor discharge resistance discharge of the multimeter. Large capacity with 100 k / 200 k large file by capacitance discharge, such as you will see the Numbers or pointer has been down, until the 0, it is discharge generally as long as a few seconds, disconnect pens and immediately upon completion of discharge, otherwise it will reverse charge; Small capacity can use 10 k / 20 k, discharge faster. Note: due to the polar capacitor is associated with the characteristics of residual charge, so, first of all, should try to put the charge, otherwise easy to get an electric shock accidents. When handling fault capacitor, should first open capacitor group of circuit breaker and isolating switch, such as the fuse protection, should be removed first fuse tube. At this point, the capacitor Banks is after discharge resistance to discharge, but still have some residual charge, therefore, must carry out artificial discharge. Discharge, should first will fasten the earthing end of the grounding line and ground net. through, reoccupy grounding rods of capacitor discharge for many times, until no spark and discharge sound, finally to fasten on earth wire. At the same time, also note that if the capacitor has internal disconnection, blown fuse or lead poor contact between the two poles may also have residual charge, and in the automatic discharge or artificial discharging, the residual charge will not be put off. Good insulating gloves should be worn and short route short fault poles of the capacitor to discharge. In addition, using serial connection mode of capacitors to discharge should be separate. Non-polar capacitors short-circuit rapid discharge operation skills 1, guide lines of small specifications of aluminum electrolytic capacitors, short circuit discharge line directly, but we do not recommend commonly. Type 2, horn of larger capacity electrolytic capacitor, can get one 220 v / 60 - 100 w bulb, or use a resistor slowly discharge. 3, bolt type high voltage large capacity, we recommend the use of electrolytic capacitor discharge coil can not only put all the electrical capacitance, and also is very good helper when short-circuit fault repair. Remember, large electrolytic capacitors do not short circuit discharge directly, otherwise the instantaneous energy infinity, spark is quite bright, noise and artillery as big, ha ha, not scare you, but I tried, take people aghast, have life risk. Our suggestion, all capacitance use discharge coil, security, namely don't hurt, also won't hurt to the device. There is a very simple solution, to find a short wire, probably around 5 m, winding up, two head with alligator clips, directly on the capacitor is negative, can discharge. But remember one thing: the one is the wire can't be too short, 2 it is must be winding up. Especially aluminum electrolytic capacitor with high pressure, high capacity, discharge end, you will find that the wires is hot.
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