At present, there are many test transformer manufacturers and distribution units in the domestic market. The quality of test transformers varies greatly, and the price difference is also very large. However, the quality of test transformers is determined mainly by silicon iron sheets, high-voltage bushings, insulating materials, and manufacturing processes. Control part of the electrical components. Among them, silicon iron pieces, high voltage bushings, insulating materials, and the quality of electrical components are important. Silicon wafers are made of high-twist non-oriented silicon wafers, high-voltage bushings, nylon, epoxy and silicone rubbers, and silicone rubbers are of good quality. Why is the price of test transformers in the market so much different?
In order to pursue great interests, some manufacturers use a lot of inferior materials on materials to injure many users.
1. The use of scrap silicon iron. This kind of material can be purchased at 5000-8000 yuan/ton on the market, and the positive material is about 36,000 yuan/ton, and the price difference between the two is 5-7 times.
2. The difference between high-voltage bushing nylon and silicone rubber is 2 times.
3. The electrical and electronic components of electrical materials use inferior products. The price difference between the two is 3-6 times.
4. Insulation materials are not replaced by other materials instead of good quality telephone paper.
5. Cutting corners in craftsmanship.
So how do users look at the quality of high-voltage test transformer?
1. When users purchase high-voltage test transformers, first high-voltage test transformer as much as possible to force the high voltage test transformer in all directions repeatedly, and then open the transformer oil valve, down a part of the transformer oil to see if the transformer oil becomes red or turbid, if the transformer oil was Red or cloudy. Explain that the manufacturer must have used a scrap of silicon iron. Why? Because a large amount of rust is attached to the old silicon iron scraps, these scrap iron scraps with rust can't be processed in any way. The scrap ferrosilicon with rust After processing the transformer core iron, it is immersed in the transformer oil and repeatedly washed by the transformer oil. The iron rust is scattered in the transformer oil, making the transformer oil red, especially after long-distance transportation. This phenomenon is more obvious, and the rust in the oil The insulation of the transformer causes serious hidden troubles, and the service life of this transformer is certainly not long.
2. When users purchase high-voltage test transformers, they can also go to the manufacturer's request to see the use of materials. Semi-finished products, you can also go to the factory to freely select a transformer immediately (must be right away, otherwise they have time to deceive you) open to see whether the use of waste silicon Iron plates, if the manufacturers hesitate or disagree with a variety of reasons, it means that they must use scrap silicon iron.
3. When users purchase high-voltage test transformers, they can also request the manufacturers to conduct power test. If the no-load current is unqualified, it indicates that the materials and manufacturing processes used by them are problematic, but no long-distance transportation or silicon-silicon sheet is visible. Ferroelectric silicon good or bad use of the above two methods to distinguish
4. Look at the materials used for the high-voltage bushings.
5. Look at electrical components.
Supermarket Basket,Grocery Basket Cart,Grocery Cart Basket,Basket For Shopping Grocery
Suzhou Malltek Supply China Co.,Ltd. , https://www.malltekcart.com