What is Line Voltage? What does line voltage mean

It is usually specified that the positive direction of the voltage from the beginning to the end is specified. The voltage between the phase wires is called the line voltage.

The voltage at the opposite end of each phase coil is called the phase voltage. It is usually expressed by UA, UB, and UC, respectively. The voltage between the end wires and the end wires is called the line voltage.

It is generally expressed by UAB, UBC, UCA. The current that flows through each phase coil is called the phase current, and the current that flows through the end wire is called the line current.

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In the three-phase circuit, the voltage between the end lines is called the line voltage, which is generally recorded as UAB, and the corresponding is the phase voltage, which refers to the voltage at both ends of the original in the circuit.

u, v, w, the voltage between phases is the phase voltage.

The phase and zero (between the center line) is called the line voltage.

The line voltage is the voltage between two live wires, and the phase voltage is the voltage between the first and neutral wires.

The voltage at both ends of each phase coil is called the phase voltage. It is usually expressed by UA, UB, and UC, respectively. The voltage between the end wires and the end wires is called the line voltage. It is generally expressed by UAB, UBC, UCA.

It is the voltage between two live wires.

Line voltage is the voltage between two phase [line] conductors at a given point in a multiphase AC circuit. The magnitude of the line voltage of the star connection is 3 times the root number of the phase voltage. The phase voltage of a delta power supply is equal to the line voltage.

For alternating current, the phase voltage is the voltage between either phase line (live wire) and the neutral line, which is 220V. Three-phase alternating current has three phase voltages: the voltage of the three is the same, the frequency is the same, and the phase difference between them is 120°.

The voltage between any two phase wires, known as the line voltage, is 380V. Three-phase alternating current has three phase voltages, so there are also three line voltages: the voltage and frequency of the three line voltages are the same, and the phase difference between them is 120°.

Line voltage = (root number 3) phase voltage.

For the three-phase four-wire power grid, the voltage between any two of the three phase wires is called the line voltage, the voltage between the phase line and the neutral line of any one is called the phase voltage, the phase difference of the three-phase voltage is 120 degrees, and the line voltage is the vector difference of the phase voltage of the two phases. For mains, the phase voltage is 220V, and the line voltage is 3 times the root number of 220V, that is, 380V.

Phase voltage wiring method:

The star connection of the three-phase voltage is to connect one end of each phase power supply or load to one point, and the other end of them is used as a lead-out line, which is the three phase wires of the three-phase voltage. For the star connection, the midpoint (called the neutral point) can be drawn out as a neutral line, forming a three-phase four-wire system. It can also be drawn out without drawing out to form a three-phase three-wire system.

Of course, with or without a neutral wire, you can add a ground wire to become a three-phase five-wire system or a three-phase four-wire system, respectively.

The triangle connection method of three-phase voltage is to connect each phase power supply or load end to end in turn, and lead each connected point out as the three phase wires of three-phase voltage. The triangular connection has no neutral point and cannot lead to a neutral line, so there is only a three-phase three-wire system. When the ground wire is added, it becomes a three-phase four-wire system.

The above content refers to Encyclopedia - Line Voltage.

Encyclopedia - Phase voltage.

Electrician Knowledge: What is Line Voltage? What is Phase Voltage? What's the difference? How to distinguish.

1. Line voltage.

Line voltage) is the voltage between the two lines of the multi-phase power supply system, taking the three-phase as an example, the voltage between the three-phase lead lines of A, B and C is also known as the line voltage. The magnitude of the line voltage of the star connection is the phase voltage.

3 times the root number. Triangle.

The phase voltage of the power supply is equal to the line voltage.

2. Any phase wire in the three live wires.

The voltage between the neutral line is called the phase voltage UA, UB, UC, and in China's low-voltage power supply system, the voltage between the three phase wires and the neutral line is 220 volts.

The voltage between the three phase wires is called the line voltage. In a symmetrical three-phase system, the magnitude of the line voltage is a multiple of the phase voltage. In China's low-voltage power supply system, the line voltage is 380 volts.

Extended information: 1. Calculation rules of line voltage.

The relationship between the line voltage and the phase voltage of the three-phase power supply is (taking the power supply side as an example):

For triangular wiring, the line voltage is equal to the phase voltage.

Electrician Knowledge: What is Line Voltage? What is Phase Voltage? What's the difference? How to distinguish.

1. In the three-phase four-wire circuit, the voltage of the phase line and the center line is the phase voltage.

2. The voltage between any two phase lines is the line voltage; The line voltage is 3 times that of the phase voltage.

3. The current flowing through each phase load is the phase current; The current flowing through the phase is a line current.

4. The phase voltage is the voltage of each phase of three-phase alternating current relative to the ground, and the line voltage is the voltage between every two phases of three-phase alternating current; For example, the civil low-voltage electricity is generally 380V, the line voltage between each two phases is 380V, and the phase voltage is 380 220V, and the residents generally use 220V single-phase electricity, and the low-voltage power electricity used by enterprises and institutions is generally 380V three-phase electricity.

Expand knowledge: 1. The capacity of the three-phase transformer SE=3 * the capacity of each phase = 3 * phase voltage * phase current.

2. Three-phase transformer three-phase: when the star is connected, the phase voltage = 1 3 line voltage, phase current = line current.

3. When the triangle is connected, the phase voltage = line voltage, and the phase current = 1 3 line current.

4. Therefore, no matter which connection method, the capacity of the three-phase transformer SE = 3 * line voltage * line current.

5. So with Li, there is the above formula you said. Usually the rated voltage and rated current of the transformer we call refer to the line voltage and line current.

732 is the divisor of 3.

The voltage between two phase wires of different phases is called the line voltage. For example, the three-phase motor line voltage is 380 volts, the 220 volt front voltage of the electric welding machine and the 380 volt line voltage power supply of the Li Hail Hail are ......