Advantages and disadvantages of current transformer V-connection and split-phase connection - News - Global IC Trade Starts Here Free Join

Probe current voltage pin, 420*4450 head diameter 5.0, over current and voltage pin

Inductance

1V wiring

Advantages: This method allows for a reduction in the number of secondary cable cores, enabling the third phase (phase B) current to be measured effectively.

Disadvantages: Since only two current transformers are used, if one of the phases is reversed, the current in the common line becomes the phasor difference of the other two-phase currents, which can lead to incorrect measurements. This increases the risk of wiring errors, making it more challenging to verify the energy meter using a single-phase method on-site.

2 phase separation wiring

Disadvantages: This approach increases the number of cable cores in the secondary circuit, which may complicate installation and maintenance.

Advantages: It significantly reduces the chance of wiring errors, enhances measurement reliability and accuracy, and makes on-site inspection of the energy meter and detection of wiring mistakes much easier. As a result, this method is often the preferred choice for electrical installations.

In summary, choosing the right wiring configuration depends on the specific application requirements. While the 1V wiring method offers simplicity and reduced cabling, it comes with higher risks of errors. On the other hand, the 2-phase separation wiring provides greater accuracy and safety but at the cost of increased complexity. For optimal performance and reliability, especially in critical environments, the 2-phase separation method is usually recommended.