The ground wire, the ground wire, plays multiple important roles in the electrical system . The following are the main functions of the ground wire:
Protect electrical appliances and personnel safety :
The ground conductor can quickly introduce the leakage or static electricity from the shell of the electrical equipment to the ground, preventing electric shock accidents .
When the insulation performance of electrical equipment is poor or the operating environment is humid, the ground conductor can effectively release static electricity to prevent electric shock accident .
If an electric shock occurs, the grounding cable can divert the current to the ground to reduce the current passing through the human body and protect human life .
lightning protection :
As part of lightning protection measures, the ground conductor can divert lightning to the ground to prevent electrical equipment from being damaged .
Ensure the normal work of the machine :
For some electrical appliances that must rely on electric power, especially medical equipment, the ground wire can ensure that the equipment can still run some small load potential in the case of sudden power failure, to ensure its normal work .
Construct a zero potential reference point :
In the circuit, the ground wire can be used as a zero potential reference point, used to determine the level of various potentials in the circuit and the voltage waveform .
Reduce electromagnetic interference :
Grounding wires can help reduce electromagnetic interference in the circuit, directing noise and interference in the circuit to the ground, thereby reducing interference with other equipment or systems .
Prevent damage to electrical equipment :
In electrical systems, a ground wire can also provide a path to direct undesired currents, such as fault currents, to the ground, thereby preventing damage to electrical equipment .
To sum up, the ground wire plays a crucial role in the electrical system, it is not only a way of electrical protection, but also the cornerstone to ensure the safety of personnel and equipment .
