In different meanings of 220V electricity, which is what you call big electricity, the neutral wire is connected to ground, so when testing with an electrical test pen, only the live wire is under voltage and the neutral wire is not.
The winding of your single-phase generator is not connected to earth, so there is no distinction between live and neutral wires. In other words, your generator is isolated from ground, so both pins have voltage to ground and there is no difference.
Regarding the UPS server which you said is not working, the reason may be that the electrical voltage or frequency emitted by your generator exceeds the operating requirements of the UPS, and it has nothing to do with whether it is grounded or not. not.
Can you measure if the voltage is too low or too high? Also, does UPS have corresponding alarms?
Single live wire problem at zero AC
1. In AC, the voltage from the live wire ends after passing through the load to the neutral wire and does not return to the live wire from the neutral wire.
2. A single-phase generator has two output lines, one hot and one zero. Simply connect two of the two lines in parallel and pass through the diode excitation coil.
3. In three-phase alternating current, the phase voltage refers to the voltage of the phase line and the neutral line, so the direction of the phase voltage points to the neutral line.
Electromotive force refers to the power supply, which is the force inside the power supply that drives the current.
The vector sum of the phase voltages is zero, which refers to the vector sum of the zero line in star connection, not at the end of the load.
To understand these problems, yous must have solid basic knowledge of electrical engineering.
The potential of the neutral wire is fixed. When the potential of the live wire is greater than the potential of the neutral wire, current flows from the live wire to the neutral wire when the potential of the neutral wire is reached. The live wire is lower than the neutral wire, the current flows in the opposite direction. For example, you sit still and receive an infusion from the IV tube. When the infusion bottle is up, the infusion is infused from the infusion bottle into your body. When the infusion bottle is low, the flow in the infusion tube is reversed. direction. You are always stationary, equivalent to the neutral line, and the height of the hanging bottle always changes up and down based on the sine wave, so the direction and magnitude of the current always changes. The potential of the neutral line is always consistent with the potential of the twanders (unless left floating), so it doesn't shock people. The potential of the live wire is either high or low at every instant (only the two moments are equal), so the live wire is the cause of the potential difference (between the neutral wire and ground), and is also The cause of the current is what is called live wire propagation. You touch the live wire, and at any moment either current is poured from the live wire through you to the ground, or current is poured from the earth through you to the live wire, sawing d back and forth, sawing you 100 times per second. , why not electrocute people?
Also, you are wrong that the live wire has a fixed tension. 220 V is only an effective value. The potential of the live wire changes all the time. Take a look at the electrician's book for. see how the live wire changes during a cycle. Commany times is it at zero potential, how many times is it at 220V, how many times is it maximum value, what is maximum value, please tell me.