EN
FR
DE
ES
-
27 07,2024
How is the understanding of withstand voltage and test voltage?
Transformers and choke coils face dangerous transient overvoltages from power switching (8-10× normal voltage) and lightning strikes (up to 3000V). This guide explains why withstand voltage tests apply 2× working voltage +500V (for
-
19 07,2024
How does wind speed affect the operation of transformers?
How does wind speed affect the operation of transformers? Typically, the maximum wind speed at a certain distance above the ground is specified over a specific period. For example, at a height of 10 meters above the ground, the wind speed reaches 35 m...
-
17 07,2024
What are the inspection tasks for dry-type transformers?
What are the inspection tasks for dry-type transformers? Check for abnormal sounds and vibrations. Look for signs of local overheating, such as insulation surface tracking and discoloration caused by harmful gas corrosion and carbonization. Ve...
-
23 04,2024
How to analyze and dissect three-phase transformers?
How to analyze and dissectthree-phasetransformers? A transformer is a device that transforms AC voltage, current, and impedance. When an AC current flows through the primary coil, an alternating magnetic flux is generated in the core (or magnetic core...
-
22 04,2024
What protective devices does a three-phase transformer have?
What protective devices does a three-phase transformer have? Microcomputer Protection Device: The microcomputer protection device for three-phase transformers consists of highly integrated components, chip-on-bus single-chip micro-controllers, hi...
-
30 03,2024
How to choose the cooling method for oil-immersed and dry-type forced air-cooled transformers?
How to choose the cooling method for oil-immersed and dry-type forced air-cooled transformers?Oil-immersed forced air-cooled transformers offer two selectable cooling methods: oil-immersed forced air cooling (ONAF) and oil-immersed self-cooling (ONAN). Ge...
-
29 03,2024
Why is vacuum drying and impregnation necessary for windings?
Why is vacuum drying and impregnation necessary for windings?Drying the winding helps to remove moisture from the insulation components. This not only enhances the insulation's withstand voltage level but also causes the insulation to contract to its ...
-
28 03,2024
What are the main insulation and longitudinal insulation in a winding?
What are the main insulation and longitudinal insulation in a winding? The main insulation in a winding includes components such as the paper cylinder, wooden cylinder, winding end insulation, and the insulation between the static ring and the ground....
-
27 03,2024
What is a split winding? What are its requirements?
What is a split winding? What are its requirements?A split winding refers to the division of the low-voltage winding of a transformer into multiple parts that are electrically independent. These divided low-voltage winding sections are each connected to t...
-
26 03,2024
In an interleaved manner, how is the leakage flux of the winding distributed, and what kind of electromagnetic force is generated?
In an interleaved manner, how is the leakage flux of the winding distributed, and what kind of electromagnetic force is generated?In the case of a winding arranged in an interleaved manner, the distribution of leakage flux is different from the concentric...
