【Daily Topic】【Electrical Edition 20160711】
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This post was last edited by hesonchang214 on 2016-7-12 at 10:48. Reward for participation: 2 Wealth. Reward for correct answer: 9 Wealth. Question: What are the “five protections” of interlock devices designed to prevent accidental operations?
1) Prevent incorrect opening or closing of circuit breakers. (2) Prevent opening or closing of isolators while under load. (3) Prevent opening or closing of grounding switches while they are energized. (4) Prevent opening or closing of circuit breakers while a grounding wire is connected to them. (5) Prevent entering an energized compartment by mistake
⑴Prevent accidental opening and closing of circuit breakers； ⑵Prevent accidental opening and closing of isolating switches under load ； ⑶Prevent closing the grounding isolator while it is energized ； ⑷Prevent closing with a ground wire connected ； ⑸Prevent accidental entry into live compartments.
⑴Prevent accidental opening and closing of circuit breakers； ⑵Prevent accidental opening and closing of isolating switches under load ； ⑶Prevent closing the grounding isolator while it is energized ； ⑷Prevent closing with a ground wire connected ； ⑸Prevent accidental entry into live compartments.
⑴Prevent accidental opening and closing of circuit breakers； ⑵Prevent accidental opening and closing of isolating switches under load ； ⑶Prevent closing the grounding isolator while it is energized ； ⑷Prevent closing with a ground wire connected ； ⑸Prevent accidental entry into live compartments.
⑴Prevent accidental opening and closing of circuit breakers； ⑵Prevent accidental opening and closing of isolating switches under load ； ⑶Prevent closing the grounding isolator while it is energized ； ⑷Prevent closing with a ground wire connected ； ⑸Prevent accidental entry into live compartments.
⑴Prevent accidental opening and closing of circuit breakers； ⑵Prevent accidental opening and closing of isolating switches under load ； ⑶Prevent closing the grounding isolator while it is energized ； ⑷Prevent closing with a ground wire connected ； ⑸Prevent accidental entry into live compartments.
⑴Prevent accidental opening and closing of circuit breakers； ⑵Prevent accidental opening and closing of isolating switches under load ； ⑶Prevent closing the grounding isolator while it is energized ； ⑷Prevent closing with a ground wire connected ； ⑸Prevent accidental entry into live compartments.
⑴Prevent accidental opening and closing of circuit breakers； ⑵Prevent accidental opening and closing of isolating switches under load ； ⑶Prevent closing the grounding isolator while it is energized ； ⑷Prevent closing with a ground wire connected ； ⑸Prevent accidental entry into live compartments
1〉. Prevent pulling or closing the switch while under load; 2〉. Prevent closing the switch with grounding applied; 3〉. Prevent closing the grounding switch or installing a ground wire while live; 4〉. Prevent entering a live compartment by mistake; 5〉. Prevent accidental pulling or closing of the switch.
⑴Prevent accidental opening and closing of circuit breakers； ⑵Prevent accidental opening and closing of isolating switches under load ； ⑶Prevent closing the grounding isolator while it is energized ； ⑷Prevent closing with a ground wire connected ； ⑸Prevent accidental entry into live compartments.