Is quick switching a current trend?
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In the petrochemical industry, is quick switching in 10/0.4kv systems currently a trend? Is there any with too fast cutting? How’s it working?
In the petrochemical industry, is quick switching in 10/0.4kv systems currently a trend? Fast switching for low-voltage systems is something that has been used only in recent years. As for whether this represents a trend, it depends on the stability of your power grid; if there are frequent power fluctuations, then fast switching is indeed very useful! If so, and if it’s relatively stable, then it’s necessary to consider whether to adopt it or not! After all, it’s a significant investment cost! I have used many different models of fast cutters, including those from Dongda Jinzhi, Nanzi and NARI Relay Protection, as well as Shenzhen Smart. In short, using Dongda Jinzhi is the most reliable option – after all, it was the first to be invented and put into use in China – but it’s also the most expensive!
The success of a quick switch also seems to be related to the degree of decay of your residual voltage.
Quick switching function; prevents ring formation between different power grids, used for switching operations and power disconnection； It is possible to switch to another section for operation in case of a problem on one line of the power grid ； If there is a need, then use it. Consider the line PT and switching time.