What is the voltage requirement for an electric rapid-transit car motor to operate?

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Electric rapid-transit car motors typically operate at a voltage requirement of around 600 volts. This voltage level is standard in many urban transit systems, allowing for the efficient operation of the motors that drive the trains. The higher voltage, such as 600 volts, is advantageous because it reduces the amount of current needed to achieve the necessary power levels, leading to thinner and lighter wiring, which is beneficial in terms of weight savings and ease of installation.

Lower voltages, like 120 or 480 volts, might not provide sufficient power for the high-torque demands of rapid transit systems. While 1000 volts is a higher voltage that can be used in some applications, it is less common for rapid transit systems primarily due to the infrastructure compatibility and safety concerns. Thus, the requirement of 600 volts reflects a balance of efficiency, power delivery, and compatibility with conventional urban transit systems.

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