For 10KV low-current grounding systems, should people use arc suppression and harmonic elimination cabinets or arc suppression coils?
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In 10KV systems with low current grounding, we have traditionally used arc suppression coils; in the previous project, arc suppression and harmonic elimination cabinets were used, and it is said that the State Grid is promoting the use of such cabinets on a large scale. So, are arc suppression and harmonic elimination cabinets the mainstream products these days, or arc suppression coils? The difference between the two? For the petrochemical industry, which product is more suitable to choose?
According to the practices of owners and design institutes, it is necessary to calculate the capacitive current that occurs when the system experiences single-phase grounding; in the petrochemical industry, arc suppression coils are generally used.