单项选择题
Synchrocope and synchro light are located on （） of main switchboard.
A.load panel
B.emergency generator control panel
C.battery changing and discharging panel
D.paralleling panel
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相关考题
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单项选择题
To （） , the power is supplied by main switchboard directly not though sub-board.
A.save network cost
B.improve the reliability of supplying power to important load
C.prevent sequence reverse
D.increase the power factor of important load -
单项选择题
（）is not installed on the main switchboard.
A.Ammeter and changeover switch
B.Power factor meter
C.Synchroscope
D.Reverse sequence relay -
单项选择题
（）is used to control, modulate, monitor and protect generator set.
A.Control panel
B.Load panel
C.Paralleling panel
D.Busbar
