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Maximum Demand Indicator(MDI) is an instrument which measures the maximum amount of electrical energy required by a specific consumer during a given period of time. == Construction == MDI instruments are designed in such a way that they record the base load requirement of electrical energy. They can also measure the peak load but are unable to record sudden short circuit or High motor Starting Currents. Its main construction parts are: # A Dial connected with moving system # A pointer on dial # Reset device # Fraction device # Indicating pin Maximum demand indicator is often available as a built in feature of three phase energy meters, included in a single case. Maximum Demand is calculated by Maximum Demand(KW)= 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Maximum demand indicator」の詳細全文を読む スポンサード リンク
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