Carbon electrode convection is an important factor leading to ground faults. After a ground fault, connecting the sic in series between phases can play the role of electromagnetic interference shielding and prevent metal surface contact. At present, Agilent sic convective amplifiers are used in China, and there are also products for npn and pnp. However, the convection amplification efficiency of npn and pnp is not very high, so better sic products are Agilent's standard 4-wire grounding, and a wire is connected in series between phases. The grounding effect is much better than the direct grounding effect.
It's said above is too complicated, so I won't go into details. Keep it simple. Electronic equipment will have 3 pins grounded to the ground, which is mainly used to prevent lightning strikes and short circuits during overload operations. You'd better figure this out before going to the contact test.
What you need is overvoltage protection. When testing, hit the same ground point as the test equipment. Avoid because of the high and low temperatures between the two locations. For example, the equipment is 1.5kv high, and the test instrument is 0.4kv low. That is, the test on the shell is subjected to an overvoltage of 6.5v, but the test instrument is only subjected to an overvoltage of 0.4v. Then reverse the grounding resistance of this overvoltage. Can the test instrument not be grounded? Grounding can affect voltage planning. That depends on the size of the grounding resistance. Wherever the impact is greater, increase the grounding resistance. See if the temperature is enough. In addition, the fixed location is grounded. Only the equipotential grounding wire is safe.
laxative However, this is not my major, so what should I do? Look at the description is it a thyristor switch?
If the ground potential difference, strength, and current are not properly balanced, it can lead to disastrous consequences.
On the first floor, there is a request to increase the grounding resistance. However, if the grounding resistance is too high, it can result in inaccurate measurements. Although the grounding point may be functioning correctly, the equipment's temperature can become dangerously high, posing a risk to people's safety.
The third floor suggests that as long as a device is grounded, there won't be any problems. While it is true that grounding helps minimize voltage fluctuations and reduces current flow, it is not a comprehensive solution. Merely increasing the grounding resistance offers no benefits and only disadvantages. If the instrument suddenly loses its ground connection, the temperature will drop and the current will rapidly return to equilibrium from a high point. Once the temperature reaches a balanced state, the voltage will stabilize as well. However, if the instrument is connected to the ground, the temperature of the equipment will decrease more rapidly.
On the other hand, if both the grounding point and grounding resistance are too small, the previous measurement of ground resistance will be misleading. Enlarging the ground resistance suddenly after the initial measurement will render subsequent measurements inaccurate. The instrument will default to a moderate resistance temperature, undermining the accuracy of the measurements.
To summarize, it is crucial to maintain a proper balance between ground potential difference, strength, and current. Inappropriate grounding resistance can lead to dangerous situations, while excessively small values can compromise measurement accuracy. It is important to consider the specific requirements and limitations of each situation to ensure a safe and accurate grounding setup.