Guarding implies the use of an added low impedance conductor, maintained at the same potential as the high impedance circuit, which will intercept any interferingvoltage or 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。
2
The harmonic problems, such as distorting supply voltage, decreasing power factor, increasing energy loss, interfering with communication systems etc. are discussed in the part one.