What are the main parameters of the transformer?

2022-06-29

There are corresponding technical requirements for different types of transformers, which can be expressed by corresponding technical parameters. For example, the main technical parameters of power transformers are: rated power, rated voltage and voltage ratio, rated frequency, operating temperature class, temperature rise, voltage regulation rate, insulation performance and moisture-proof performance. For general low-frequency transformers, the main technical parameters are: Transformer ratio, frequency characteristics, nonlinear distortion, magnetic and electrostatic shielding, efficiency, etc.

Classification and causes of common fault phenomena of low frequency transformers

2022-06-29

Some digital multimeters have the function of measuring capacitance, and their ranges are divided into five ranges: 2000p, 20n, 200n, 2μ and 20μ. When measuring, the two pins of the discharged capacitor can be directly inserted into the Cx jack on the meter board. After selecting the appropriate range, the displayed data can be read and the transformer can be judged.

Inspection of power transformers

2022-06-29

Check whether there is any obvious abnormal phenomenon by observing the appearance of the transformer. Such as whether the coil lead is broken, desoldered, whether the insulating material has scorch marks, whether the iron core fastening screw is loose, whether the silicon steel sheet is rusted, whether the winding coil is exposed, etc.

What are the unique characteristics of potting transformers?

2022-06-29

The potting transformer has the function of temperature setting, supports manual/automatic start and stop of the fan, and has functions such as failure, over-temperature sound and light signal alarm, and over-temperature automatic tripping. Of course, the characteristics of potting transformers are not limited to this. Let's introduce it to you in detail, continue to read below:

Briefly describe the operation principle of three-phase isolation transformer

2022-06-29

Three-phase isolation transformer refers to a transformer whose input winding and output winding are electrically isolated to avoid the danger of accidental contact with live objects and the ground. The principle is the same as that of ordinary dry-type transformers. The secondary circuit floats to the ground to ensure electrical safety.

How to improve the problem of high temperature rise of switching power supply transformer

2022-06-29

In the working process of switching power supply transformers, engineers not only need to comprehensively consider the rationality of its design and structure, but also strictly control its temperature rise range, so as to avoid the problem of excessive temperature rise and reduced work efficiency. In the actual application process, the high temperature rise often occurs in the MOS tube of the power transformer and the transformer design itself. Today we will start from these two aspects and see how to effectively solve the temperature rise of the switching power transformer. too high problem.