以及保护接地导体电流 protective earth conductor current
而保护意味着使用保持在与高阻抗电路相同电位的附加的低阻抗导体来阻止可能的干扰电压或电流。
Guarding implies the use of an added low impedance conductor, maintained at the same potential as the high impedance circuit, which will intercept any interfering voltage or current.
电气设备和载流导体的选择、继电保护、自动装置的整定、限制短路电流措施的确定都需进行短路电流的计算。
The short circuit current calculation is required for choosing equipment and current carrying conductor, setting of the rely and automation, confirmation of the short circuit current limiting method.
电力半导体器件故障电流(特别是短路电流)的确认与及时有效保护，对电力机车交流装置的可靠工作至关重要。
Acknowledge and in time effective protection of power semiconductors from fault current is of utmost importance for the reliable operation of AC equipment on electric locomotive.
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