What are the common protection devices for power capacitors?
Power capacitors are widely used as one of the z economic ways of reactive power compensation. However, due to the high failure rate of capacitors, which are directly connected to the power grid, any problems may cause economic losses or more serious casualties. Therefore, each capacitor manufacturer will set certain protection devices for capacitors according to the relevant technology when producing capacitors, which is also one of the selling points of capacitors.
What are the common protection devices for power capacitors? What is the working principle? How to choose the Motor Run Capacitor Manufacturers focus according to your needs? Come and see today's article! Common power capacitor protection measures: 1. Over-voltage pull-off protection Over-voltage pull-off is one of the common protection devices for power capacitors Z. It adds connection points to the top cover terminals and internal terminals of the power capacitor. When the top cover pressure rises gradually, the following connection points will be separated gradually.
It manifests itself in the form of active disconnection of the capacitor to avoid the undesirable consequences of a fault. Once the power capacitor has common faults such as oil leakage, bulging, breakdown aging, etc., it will lead to a large amount of gas generated by the metal film inside the capacitor, increasing the internal pressure and thus triggering the overpressure pull-off protection.
2, protection of high current fuse In addition to overvoltage operation, the grid harmonics will also have a certain impact on the capacitor. Once there is a large current in the capacitor, the fuse will immediately disconnect the capacitor link. 3, equal pressure explosion-proof protection permeable hole power capacitor bulging, oil leakage and other faults are common faults of capacitors, timely replacement can be properly solved. Once there is high current in the capacitor, the fuse will immediately disconnect the capacitor link.
3、Equal pressure explosion-proof protection permeability hole power capacitor bulging, oil leakage and other faults are common faults of capacitors, which can be properly solved by timely replacement. Capacitor explosion is what everyone does not want to see, and once it happens, it will not be able to recover to the original state in a short time.
Therefore, some manufacturers in the market design and produce power capacitors with unique vent design, which can always keep the pressure balance inside and outside and completely eliminate the possibility of capacitor explosion. Such explosion-proof power capacitors are more suitable for scenarios with complex working conditions or unfortunate explosions.












