The wiring of the current transformer should follow the series principle: that is, the primary winding should be connected in series with the circuit under test, while the secondary winding should be connected in series with all instrument loads.

If the main wiring is single busbar, single busbar segment, double busbar, etc., install three-phase voltage transformer on the busbar; when there is power on its outlet, it needs to be reclosed to check the synchronization or no voltage, and it needs to be parallel in the same period. Single-phase or two-phase voltage transformers should be installed on the line side.

​The principle of the current transformer is based on the principle of electromagnetic induction. Its primary winding often has all the current of the line flowing through it. When the current transformer is working, its secondary circuit is always closed.

The models of low voltage current transformers are LMZ1-0.5, LMZ1-0.66, LMZJ1-0.5, LMK-0.66, BH-0.66, SDH-0.66 and so on. There are also some special enterprise models, such as ALH-0.66, AKH-0.66 and so on.

In many work links, such as quotation, after-sales, logistics, etc., during the epidemic, we did not completely press the pause button, but all departments worked together and cooperated to promote the promotion and development of business and various tasks.

Because the voltage transformer is prone to loosening of bolts or rupture of porcelain bushings due to vibration during transportation, it needs to be checked before formal installation to ensure that there is no damage before installation and use. Next, let's take a look at what to check and the steps to install.

Preventive testing is an important link in the operation and maintenance of power equipment, and it is one of the effective programs to ensure the safe operation of power equipment.

In many electronic application scenarios, people will use step-up transformers, but you may not know the working principle of step-up transformers, so it is very troublesome to choose.

Amorphous strips are mainly used to replace transformer core materials (silicon steel, ferrite), and belong to a new generation of transformer cores. Transformers can be divided into frequency power frequency (50hz or 60hz), intermediate frequency (60hz to 20khz), high frequency (above 20khz) according to frequency.

In many electronic application scenarios, people will use various types of transformers, whether it is a high-frequency transformer or a low-frequency transformer, the manufacturing process is similar. Next, Zou Gong, a senior design engineer from Shenzhen Yingzhe Technology Co., Ltd., will introduce the general production process of transformers.