江苏春晨电缆有限公司生产卷筒扁电缆 春晨YCB扁电缆，在实现等电位的过程中，将发生较大的暂态电容放电电流，其等值电路如上图所示。
In the process of realizing equipotential, a large transient capacitor discharge current will occur, and its equivalent circuit is shown in the figure above.
Uc为人体与带电体之间的电位差，这一 电位差作用在人体与带电体所形成的电容C上，在等电位的过渡过程中，形成一个放电回路，放电瞬间相当于开关S接通瞬间，此时 限制电流的只有人体电阻Rr，冲击电流初始值可由欧姆定律求得：Ich=Uc/Rr
UC is the potential difference between the human body and the charged body. This potential difference acts on the capacitance C formed by the human body and the charged body. In the process of equipotential transition, a discharge circuit is formed. The moment of discharge is equivalent to the moment when switch S is turned on. At this time, only the human body resistance RR restricts the current. The initial value of impulse current can be obtained by Ohm's Law: ICH = UC / RR
在等电位作业中，重要的是进入或脱离等电位过程中的安全防护。我们知道,在带电导线周围的空间中存在着电场，一般来说，卷筒扁电缆 春晨YCB扁电缆距带电导线的距离越近，空间场强越高。当把一个导电体置于电场之中时，在靠近高压带电体的一面将感应出与带电体极性相反的电荷。当作业人员沿绝缘体进入等电位时，由于绝缘体本身的绝缘电阻足够大，通过人体的泄漏电流将很小。但随着人与带电体的逐步靠近，感应作用越来越强烈，人体与导线之间的局部电场越来越高。当人体与带电体之间距离减小到场强足以使空气发生游离时，带电体与人体之间将发生放电。当人手接近带电导线时，就会看见电弧和啪啪的放电声，这是正负电荷中和过程中电能转化成声、光、热能的缘故。当人体完全接触带电体后，中和过程完成，人体与带电体达到同一电位。
In equipotential operation, the most important is the safety protection in the process of entering or leaving equipotential. We know that there is an electric field in the space around the electrified wire. Generally speaking, the closer the distance from the electrified wire is, the higher the spatial field strength is. When a conducting body is placed in an electric field, a charge opposite to the polarity of the charged body will be induced on the side near the high-voltage charged body. When the operator enters the equipotential along the insulator, the leakage current through the human body will be very small because the insulation resistance of the insulator itself is large enough. However, with the gradual approach of human and electrified body, the induction effect is more and more intense, and the local electric field between human body and conductor is higher and higher. When the distance between the human body and the charged body is reduced to the field strength enough to make the air free, the discharge will occur between the charged body and the human body. When the human hand is close to the electrified wire, it will see the arc and the sound of electric discharge, which is the reason why the electric energy is converted into sound, light and heat energy in the process of positive and negative charge neutralization. When the human body completely contacts the electrified body, the neutralization process is completed, and the human body and the electrified body reach the same potential.
