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汉语拼音：èr cì huí lù

在电气系统中由互感器的次级绕组、测量监视仪器、继电器、自动装置等通过控制电缆联成的电路。用以控制、保护、调节、测量和监视一次回路中各参数和各元件的工作状况。

• sec The pumps in the secondary loop shut down automatically, due to a slight malfunction.

  秒二次回路中的水泵因为一个小故障而自动关闭。

• Voltage transformer one or two fuses complete, two circuit without short circuit.

  电压互感器一、二次熔断器完整，二次回路无短路。

• 8 min An operator notices that the valves for the backup pumps in the secondary loop are off. He opens the valves.

  8分钟一个操作员注意到二次回路备用水泵的阀门是关的，于是打开了阀门。

• The CAI can visually demonstrate the action process of the secondary circuit, which is very helpful to improve experimental inching quality.

  该课件能直观地演示距离保护二次回路的动态过程，时提高实验教学质量是非常有帮助的。

• 4 sec Backup pumps within the secondary loop automatically turn on.

  4秒二次回路中的备用水泵自动启动。

• Draw the secondary circuit diagram the protection of.

  绘出了保护的二次回路图。

• Electromagnetic Interference of Power System Secondary Circuit and Its Countermeasures

  电力系统二次回路电磁干扰及防范措施

• Analysis of the second circuit breaking blocking operation of a CT of differential protection for transformer

  变压器差动保护电流互感器二次回路断线闭锁分析

• Connection Improvement of Prevention Voltage Transformer Secondary Circuit Parallel Operation

  防止电压互感器二次回路并列运行的接线改进