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為何東鐵綫、馬鞍山綫及西綫列車行駛途中,有集電弓引電的車卡會間中發出類似輕微爆炸的聲音?
答:

其實該車卡是剛駛過"中性區",即兩個交流電網之間的空檔位置,電力供應突然中斷了。不過列車並不會因此停一停動力的,因為不只一個車卡有集電弓,而且全列列車電力都可以互相穩定地轉傳,燈也不會閃... 理論上不少 EMU 列車只有一個車卡去集電也能行駛的,只是效率會不太高。

*EMU = 分散式電力動車組

 
 

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