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一般35/10KV变电所操作电源应采用( )方式
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一般35/10KV变电所操作电源应采用( )方式
A、蓄电池直流
B、硅整流
C、交流
D、装设补偿电容器的硅整流
时间:2021-09-01 20:45
关键词:
联大
河南理工大学
电气工程及其自动化
供电技术
答案解析
B
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当35/10kV终端变电所需限制10kV侧短路电流时,一般情况下可采取下列哪些措施?( )
A cabinet or space containing the controls or valves for the fixed firefighting system must be().
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A cabinet or space containing the controls or valves for the fixed firefighting system must be().
一般35/10KV变电所操作电源应采用( )方式
某企业变电所,进线电压35kV,经降压变压器后,以10kV向厂区高压电气设备及用户供电,再经10/0.4kV配电变压器向附近低压用户供电。现已知10kV系统全部以电缆馈电,其中截面95mm2的电流纵长15km,截面120mm2的长10km,试计算10kV系统单相接地电容电流最接近的数值为()A。
某企业变电所,进线电压35kV,经降压变压器后,以10kV向厂区高压电气设备及用户供电,再经10/0.4kV配电变压器向附近低压用户供电。假设上述系统单相接地电容电流计算值为32A,若需在接地故障下运行时,试分析10kV系统选择()中性点接地方式最合适。
Mainly east 3 or 4 partly cloudy to overcast occasional rain()slowly south moderate or good.
()any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local quarantine officer must be notified immediately.
Should any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local Quarantine Officer must be()immediately.
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
If he is a common carrier,he is absolutely responsible to the owner of the goods carried ()any loss or damage to them unless caused by an Act of God or the Queen’s enemies,or the inherent vice in the goods themselves,or the negligence of the owner of the goods,or a general average sacrifice.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
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