The weather conditions that most easily lead to corona flashover incidents in power grids are ( ).
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The weather conditions that most easily lead to corona flashover incidents in power grids are ( ). A. Heavy rain B. Strong wind C. Dense fog D. High temperature 3. Under the same current intensity, in terms of the likelihood of causing death, which type of current is the most dangerous? A. Power-frequency current B. High-frequency current C. Direct current D. Impulse current 5. A substation must have a complete grounding system, and its grounding resistance should meet the grounding requirements for electrical equipment of different types and voltages ( ). A. Maximum value B. Minimum value C. Average value D. Any value
The weather condition that most easily causes pollution flashover in power grids is (heavy rain). A. B. Strong wind C. Dense fog D. High temperature. 3. Under the condition of the same current intensity, in terms of the likelihood of causing death, the most dangerous type of current is (power frequency current). A. B. High-frequency current C. Direct current D. Impulse current 5. A substation must have a complete grounding system, and its grounding resistance should meet the (minimum) requirements for grounding electrical equipment of different types and voltages. A. Maximum value B. C. Average value D. Any value
The weather condition that most easily causes corona flashover in power grids is (C). A. Heavy rain B. Strong wind C. Dense fog D. High temperature 3. Under the same current intensity, in terms of the likelihood of causing death, the most dangerous type of current is (A). A. Power-frequency current B. High-frequency current C. Direct current D. Impulse current 5. A substation must have a complete grounding system, and its grounding resistance should meet the grounding requirements for electrical equipment of different purposes and voltages (B). A. Maximum value B. Minimum value C. Average value D. Any value
The weather condition that most easily causes corona flashover in power grids is (C). A. Heavy rain B. Strong wind C. Dense fog D. High temperature 3. Under the same current intensity, in terms of the likelihood of causing death, the most dangerous type of current is (A). A. Power-frequency current B. High-frequency current C. Direct current D. Impulse current 5. A substation must have a complete grounding system, and its grounding resistance should meet the grounding requirements for electrical equipment of different purposes and voltages (B). A. Maximum value B. Minimum value C. Average value D. Any value
The weather condition that most easily causes corona flashover in power grids is (C). , g) v) w; G0 ]3 qA. Heavy rain B. Strong wind C. Dense fog D. High temperature % r% `; B& y" U3. Under the condition of the same current intensity, in terms of the likelihood of causing death, the most dangerous type of current is (C). 2 [& f2 j- V( g- N y+ Z% M A. Power-frequency current B. High-frequency current C. Direct current D. Impulse current $ @ y0 \+ Z0 {3 P! o5. A substation must have a complete grounding system, and its grounding resistance should meet the requirements for grounding electrical equipment of different types and voltages (B). ; A# [+ l7 J6 W) n" \A. Maximum value B. Minimum value C. Average value D. Any value
The weather condition that most easily causes corona flashover in power grids is (C). A. Heavy rain B. Strong wind C. Dense fog D. High temperature. Under the same current intensity, in terms of the likelihood of causing death, the most dangerous type of current is (C). A. Power frequency current B. High-frequency current C. Direct current D. Impulse current A substation must have a complete grounding system, and its grounding resistance should meet the requirements for grounding electrical equipment of different types and voltages (B). A. Maximum value B. Minimum value C. Average value D. Any value
Hehe, heavy fog is the main cause of pollution flashover accidents.