How to distinguish neutral wire, live wire and ground wire among the three wires: 1. Blue or black is neutral wire, yellow and green two-color wire is ground wire and the red or ** or green is the live wire. 2. When measuring with an electric pen, the light on the electric pen is the live wire, otherwise it is the neutral wire and ground wire. 3. Connect the bulb to be tested. After determining the live wire with an electric pen, connect the neutral wire and live wire to the lamp head respectively, the bright wire is the neutral wire, and the slightly darker wire is the ground wire. .
How to distinguish between zero fire and ground with three wires
However, the first method is only for reference, because many times electricians do not use wires necessarily conform to standards and errors may occur using this method.
Ground wire, short for grounding device, refers to a wire that is connected to ground, hull, or has zero reference potential in an electrical system or electronic equipment. This is a safety earth protection. thread.
Neutral line is a line extending from the neutral point on the secondary side of the generator or transformer. Normally, the neutral line is repeatedly grounded with the protective ground wire at the neutral point on the secondary side of the generator. the transformer. Double protection.
What do the four uvwn lines coming out of the diesel generator represent?
There are two lines coming out of the 220V generator. Take one and connect it to the case. then ground it. The neutral wire goes to the hull and is grounded;
There are four wires coming out of the 380V generator, and the neutral wire runs from the star point neutral wire, which is connected to thegenerator shell, ground wire, etc.
6-10KV is a non-grounding operating system. Directly powered high voltage loads are three phase and do not require a neutral line. There is no neutral line in the angular connection and the neutral line in. there is no need to remove the star connection. If low voltage electricity is supplied and the voltage is reduced by the transformer, there will be a neutral line.
As shown in the picture, which wire of the generator is considered as the neutral wire and the live wire respectively?
UVW is the three live wires and N is the neutral wire. If your equipment is 220V, connect it to UN, and the maximum cannot exceed 1.7 kilowatts.
A diesel generator is a small power generation equipment, which refers to an electric machine that uses diesel as fuel and a diesel engine as motemain engine to drive the generator to produce electricity.
Development history
The world's first diesel engine was born in Augsburg, Germany in 1897. It was invented by Rudolf Diesel, the founder of MAN. The English name for the diesel engine is Diesel, the name of the founder.
MAN is the most professional diesel engine manufacturing enterprise in the world today, with a maximum single engine capacity of 15,000 kW. It is a major supplier of energy to the shipping industry. China's large diesel power plants also rely on MAN, such as the Dongjiang Power Plant in Huizhou, Guangdong (100,000 kW). Foshan power plant (80,000 kW) are all units supplied by MAN.
How to connect the four wires of the generator in the car?
The neutral wire also comes from the power plant, the zero line is the neutral line. The generator only hasthree phases, but when passing through the step-down transformer (DY connection), the secondary side of the transformer brings out a cable from the neutral point. This is called the neutral line, which is also the zero line. mentioned by the poster.
The fact that the poster can think about the final destination of the neutral line shows that the poster is also a person who likes to think. Our electrical network is a mesh structure, and the neutral line comes out of it. this transformer will eventually be connected to another transformer.
I also suggest that the poster take a look at the TN system. The neutral line must be grounded.
The generator in the car has four wires, which are the B+ battery positive terminal, the regulator positive terminal, the regulator ground wire, and the generator ground wire. Connect these four wires and the. generator It will work normally. The specific steps are as follows:
1. Placez the generator on the table.
2. The B+ pin on the far left is the wire connecting the positive terminal of the battery.
3. Pin F is connected to the positive pole of the regulator.
4. Pin E is the ground connecting the regulator.
5. The last thing left is to connect the pins to vehicle ground.