为提高系统的可靠性，还设计了对电源控制保护器功能模块的自检测电路和采取了有效的硬件与软件抗干扰措施。

To improve the system reliability, the buildintest circuits are also designed, and the effective hardware and software antidisturbance methods are adopted.

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为提高系统的可靠性，还设计了对电源控制保护器功能模块的自检测（BIT）电路和采取了有效的硬件与软件抗干扰措施。

To improve the system reliability, the build-in-test( BIT) circuits are also designed, and the effective hardware and software anti-disturbance methods are adopted.

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保护器的工作电源应与电动机的控制回路电源相同。

The working power supply of the potector shoud be same with the control circuit power supply of the motor.

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