Vakuums ķēde pārtraucējs atlēciens laiks

The closing bounce time of a circuit breaker is the time from the beginning of contact when the circuit breaker is closed, follow by separation, who may come come into contact and then separate, to its stable contact.
This parameter is not explicitly specified in foreign standards. At the end of 1989, the Electric Power Department of the Ministry of Energy proposed that the closing and bouncing time of vacuum circuit breakers must be less than 2ms. Why is the closing bounce time less than 2ms? The main reason is that the moment of closing and bouncing can cause L.C high-frequency oscillation in the power system or equipment, and the overvoltage generated by the oscillation may cause damage or even damage to the insulation of electrical equipment. When closing and bouncing; When it is less than 2ms, there will be no significant overvoltage, the equipment insulation will not be damaged, and there will be no fusion welding between the moving and stationary contacts during closing.
dažādi periodika of aizvēršana ir pārāk liels, kas var viegli cēlonis atlēciens kad aizvēršana, jo kustība impulss izeja by mehānisms ir tikai borne by pirmais aizvēršana fāze kontakts. The variying periodiskums of atvēršana var prolong the arcing time of rear open phase pipe and reduce the breaking capacity.
atšķirīgais periodiskums of aizvēršana un atvēršana parasti pastāv vienlaicīgi, so pielāgošana atšķirīgais periodiskums of aizvēršana nodrošina the different periodiskums of atvēršana. Prasība in the product is that the asynchrony of closing and opening should less than 2ms.

aizvēršana un atvēršana spoles ir projektēts īstermiņa operācija, ar a ieslēgšanas laiks mazāk nekā 100ms for the aizvēršanas spole un mazāk nekā 60ms for the opening coil. The opening un closing times are general set when the circuit breaker leaves the factory and do not need to be moved again.
Kad a ķēde pārtraucējs is lietots in a power ģenerācija sistēma un īssavienojums tuvu the power source, the vājināšanās of fault current is slow. If the opening time is short, the fault current that the circuit breaker opens may contain a large DC component, and the opening conditions are even worse, who is very unselfable for the opening of the circuit breaker. Tāpēc, for vakuums ķēde slēdži lietoti in power generation systems, it is adviceable to design to opening time as long as possible.