Fortune Telling Collection - Free divination - What do you mean by three-stage protection without time limit and with time limit?
What do you mean by three-stage protection without time limit and with time limit?
The three-level protection is (overload, overcurrent, quick break).
Paragraphs 2 and 3 can be used as near backup protection for this section of the line, and also as far backup for the next section of the line. Of course, for the sake of reliability, paragraph 3 is necessary. When this section of the line fails, 1 section will act first, and if the fault is protected, it will act after two sections of time limit, which is why there is a time limit.
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