How to connect the reverse installation wiring of the high voltage current transformer?

If it is installed in reverse, it is best to use a screwdriver to remove it and reinstall it, otherwise it is likely to cause poor contact.

How to connect the reverse installation wiring of the high-voltage current transformer is, of course, necessary to carry out complementary docking, which can make his installation more scientific and safer to use. Therefore, we must have a professional understanding of him, so that we can be accurate.

The high-voltage current transformer is installed in the reverse installation and wiring, you can check the product instruction manual, and there is a concealed installation in the product manual, and the introduction can be operated according to the operation.

Hello friends, the reverse installation and wiring of the high-voltage current transformer requires professional people to install, and there is no way to operate it yourself, otherwise there may be danger.

High voltage current transformer um, he his um, this installation electrician, if you want to find a way to install the cables, you should turn off their power supply and connect it, and then you can turn on the power.

2. The V-shaped wiring of two single-phase voltage transformers can measure the interphase line voltage, but can not measure the phase voltage, and it is widely used in the power grid where the neutral point below 20kV is not grounded or grounded by arc suppression line diagram. See Figure 1(b).

How to connect the reverse installation wiring of the flow transformer? Oops, this one is not afraid of reverse wiring. Did you collect it? You can't take it like that.

Generally speaking, I think that the high-voltage current transformer is installed in the reverse line, and the wisdom is to dry the drawings to connect it.

The wiring of this installation must have a regular electrician to be able to install it safer.

If the current is installed in the reverse direction, it should be difficult to connect it.

How to connect the high-voltage current transformer to the return to school Android machine line? It is recommended that you log in to the electrician's master.

The high-voltage current transformer is reverse-mounted and wired, and this reverse installation is really not very good.

The high-voltage current transformer is reverse-mounted and wired, and you should follow his. color to pick up.

The high-voltage current transformer can be wired in reverse mounting.

Correct installation method of current transformer:2.The main wire induces a magnetic field on the core, and the secondary has many coils, which induce high voltage and low current, and is used by power supply current meters.

3.The base of the transformer has 4 screw holes, which are used to fix the current transformer.

4.The secondary grounding wire of the transformer. The reason is to prevent high-voltage discharges from causing harm.

5.For safe use, disconnect the power supply during installation. All parts should be fixed and strong.

The current transformer is an instrument that converts the large current on the primary side into a small current on the secondary side according to the principle of electromagnetic induction. A current transformer is made up of a closed core and windings.

How to calculate multiples is very simple. The current transformer nameplate tells you all about it.

For example, if you see 100 5

, then the multiple is 100 divided by 5, which is equal to 20 times.

If you see a current transformer with 50 1, then the multiple is 50 divided by 1, which is 50 times.

The above is the case when the number of core-piercing turns is a standard number. The standard number of cores on most transformer nameplates is 1, and your actual number of cores is also 1. If not, the magnification is to be converted.

Suppose your standard grommets are 1 and your actual grommets are 2, then although the nameplate may say 100 5, your actual multiplier is not 20, but 10 times.

Hello, I have seen your question and am sorting out the answer, please wait a while Oh dear.

A current transformer is a power supply that supplies the current used to start up measuring instruments and protective relays. At the same time, due to transportation, handling and other reasons, before installing the current transformer, it is necessary to carry out a visual inspection; Check whether the surface of the porcelain is falling, cracked and other phenomena; Whether there are cracks in the flange; Whether the conductive rod is fixed firmly, etc. The installation of the current transformer depends on the configuration of the equipment.

Generally, there are the following situations: (1) The current transformer is installed on a metal frame (such as a bus frame). 2) At the place where the bus passes through the wall or floor, fix the current transformer directly on the wall or floor with foundation screws, or make the angle steel into a rectangular frame first, and then fix the current transformer on the frame.

3) Installed in the complete set of power distribution cabinets. This current transformer is not installed on the body, only the wiring is checked.

Preparation tools: current transformer, manual.

Specific installation process:

1. The metal frame (such as the bus frame in the distribution cabinet) must be firm, and the exposed metal part of the transformer shell must be reliably grounded.

2. Correct wiring according to the description diagram of the manual, the digital marks at both ends of the wire should be clear, and the marking range should meet the requirements of the rules.

3. The same group of current transformers should be installed in the same direction, and the current transformer group should be installed in the same direction to ensure that the positive direction of the primary and secondary circuit currents of the current transformer group is the same, and the nameplate should be easily observed as much as possible.

4. The secondary side of the current transformer is not allowed to open the circuit. When only one secondary circuit is used in the second-round transformer, the other secondary circuit should be reliably shorted.

5. Copper wire should be used for the conductor or cable of the secondary circuit, and the cross-section of the conductor of the current transformer circuit should not be less than that, and the cross-section of the conductor of the voltage transformer circuit should not be less than.

6. The first row at the exit of the current transformer should choose a special current terminal, and the secondary winding not used by the current transformer should be short-circuited and grounded on the terminal board. Filial piety.

7. There should be no joints in the secondary circuit conductors in the disc and cabinet, and there should be no joints in the middle of the control cable or conductor. If a splice must be present, a stronger terminal should be used for the transition connection.

8. The polarity of the current transformer cannot be reversed, and the phase difference and phase difference should meet the requirements of the design and regulations. For transformer wiring for differential protection, the phasor diagram of the current in both arms must be measured before it is put into operation to check the correctness of the wiring.

9. The secondary circuit wire should be arranged neatly and beautifully, the connecting screws between the wire and the electrical components and the terminal row shall not be loosened, and the distance between the wire and the clamping point shall meet the requirements of this rule.

10. The insulation of the secondary circuit to the ground should be good, and the voltage circuit and the current circuit should not be mixed.

11. The current and voltage circuits should be grounded at the secondary side outlet of the transformer. (Note: The secondary side of the low-voltage current transformer cannot be grounded.) Since the wires, energy meters and variable ridge voltage generators used in low-voltage metering devices have the same insulation level, the maximum voltage that can be withstood is basically the same.

When the other secondary windings are grounded, the insulation level of the primary circuit of the whole device is reduced, and it is easy to damage the insulation weaknesses of the energy meter or transformer (such as being struck by induced lightning). To reduce the damage caused by lightning strikes, it is best not to ground on the secondary side. ）

12. The current transformer should be installed in a complete distribution cabinet. This kind of current transformer is not installed in the body, and finally check whether the installation wiring is correct. <>