High voltage test transformer adopts a single-frame core type iron core. The primary winding is wound on the iron core, while the measuring winding and high-voltage winding are wound on insulating cylinders and placed outside the primary winding, forming a coaxial structure. By adjusting the output voltage of the voltage regulator in the control box (cabinet) and applying it to the primary winding of the transformer, the required high voltage can be obtained based on the principle of electromagnetic induction.
The gas-filled characteristics or advantages of this product are quite good: firstly, this type of product has a very light weight and its volume is also quite small. It can be said that its lightness is between 40% and 65% of oil-immersed transformers of the same level. In addition, it is worth noting that its cleanliness and freedom from oil contamination are excellent, and under normal circumstances, no maintenance operations are required. Generally, this machine is not affected by external weather conditions, and during testing, there is no need to worry about whether it is in a static state. One of its main features is its insulation strength, which is much stronger than that of oil-immersed test transformers to some extent, and its corresponding corona is also very small.
High voltage test transformers are applied in many fields, among which the more important ones include power systems, scientific research departments, etc. They are also used in daily life. The reason why the above-mentioned departments need to use this type of transformer is mainly for testing, in order to develop voltage transformers more suitable for the power system departments in our country, especially under high-voltage environments, to test whether the insulation strength of the transformer meets actual needs. As an indispensable device in high-voltage testing, its importance is self-evident. It is precisely because of its wide application and its own importance that it needs to be controlled to ensure its quality, avoid abnormal situations during testing, and prevent affecting test results and the development and use of transformers.
Product features of high voltage test transformers:
◆ The product adopts a high-voltage bushing formed in one pressing process
◆ The bushing is completely isolated from the gas cylinder, and all connecting parts are sealed with imported O-ring seals, thoroughly solving the common problem of transformer gas leakage
◆ Horizontal iron core design effectively improves the product's seismic resistance
◆ All products can pass the 1.1 times induced overvoltage withstand test
◆ Pure SF6 is used as the insulating medium
◆ High and low voltage wires use high-strength polyester and oxygen-free copper rod enameled wire
◆ The iron core uses brand-new WISCO two-silicon cold-rolled silicon steel sheets
High voltage test transformers can not only be used for AC power frequency withstand voltage tests, but if equipped with capacitors, silicon stacks, and high-voltage DC microammeters of the same voltage level and capacity, they can be assembled into DC high-voltage test devices to measure high-voltage DC leakage current.
