At present, AC-DC test transformers are mainly divided into four types: inflatable test transformers (AC-DC test transformers), oil-immersed test transformers (AC-DC test transformers), oil-immersed epoxy barrel test transformers (AC-DC test transformers), and Dry epoxy casting test transformer.
The following are the respective characteristics of these four test transformers (AC and DC test transformers), so that when choosing the test transformer, you can choose an ideal device according to your own needs.
First, inflatable test transformer ( AC and DC test transformer )
Model YDJ is currently a hot product in the high pressure field because SF6 gas is a kind of material with high dielectric strength. It has arc extinguishing, colorless, odorless, non-toxic and other characteristics. Using it as a medium makes the product compact, lightweight and has good performance. It is more convenient to work on site. And because of its high dielectric strength, using it as a high voltage power transformer without partial discharge can easily achieve standard PD parameters. And can do high voltage, large-capacity test and no partial discharge AC transformer.
Disadvantages: Because of its complicated process, and SF6 gas is more expensive, this product is slightly more expensive than other products on the market.
Second, oil-immersed test transformer ( AC and DC test transformer )
Model YDQ This product is a traditional product used in China in the 1960s. It has mature technology, low cost, low price, and easy maintenance. Now there are many customers using this product.
Disadvantages: bulky, bulky, easy to leak and cause pollution. After a long time, the oil changes, the insulation decreases, and the service life is short.
Third, the epoxy cylinder test transformer ( AC and DC test transformer )
This test transformer model: YDT, is the introduction of the former Soviet Union technology, this test change, without casing, is a cylinder type, the overall height can be reduced, can design large-capacity, high-voltage products, can be unlimited increase.
Disadvantages: bulky, bulky.
Fourth, epoxy casting dry test transformer ( AC and DC test transformer )
Model: GTB type, is the epoxy resin will be high pressure coil casting, no shell, so that the product can be made compact, no leakage.
Disadvantages: Can not do high voltage, large capacity products, heat is not good, easy to burst. Inconvenient maintenance
respected user:
Thank you for your attention to our products. In addition to this product introduction, the company also has insulation ladders, high-voltage insulation mats, cable fault testers, high-voltage measuring instruments, pressure test equipment for insulated boots gloves, power safety equipment cabinets, etc. If you are interested in our products, welcome to inquire. Thank you!
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