Electrical Technology 2020-5-24
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This post was last edited by sdscj0122 on 2020-5-24 08:43. It deals with multiple-choice questions related to the \"Power Safety Work Procedures\"; please indicate whether the answer is correct or incorrect. 3 points are awarded for correct answers, 2 points for incorrect ones, and 5 points for a detailed explanation of the reasons. When maintaining 220kV equipment, the safe distance between the workers’ normal working area and the live equipment is 3 meters. ( ) Correct
Correct. According to Table 4–1 of the electrical safety regulations, the distance that must be maintained between workers and live equipment during normal operations is as follows: 0.4 M for 10 KV and below, 0.6 M for 35 KV, 1.5 M for 110 KV, 3.0 M for 220 KV, and 5 M for 550 KV ； The safety distance when the equipment is not powered off takes into account a certain safety margin and unexpected situations; it is not based solely on the discharge distance, nor is it the minimum safety distance.
Correct. The required distance that staff must maintain from equipment carrying electrical charge during normal activities is: 0.4 M for 10 KV and below, 0.6 M for 35 KV, 1.5 M for 110 KV, 3.0 M for 220 KV, and 5 M for 550 KV ； The safety distance when the equipment is not powered off takes into account a certain safety margin and potential unexpected situations; it is not based solely on the discharge distance, nor is it the minimum safety distance.