Darui Electric recommends for you
Working Principle:
1. AC, AC/DC Test Transformer:
Input the power frequency power supply into the operation box (or operation console), and adjust the voltage through the auto voltage regulator to input into the primary winding of the test transformer. According to the principle of electromagnetic induction, power frequency high voltage can be obtained in the secondary (high voltage) winding. This power frequency high voltage can be rectified by high-voltage silicon stack and filtered by capacitor to obtain DC high voltage, whose amplitude is 1.4 times the effective value of the power frequency high voltage. However, when using DC, the short-circuit rod should be pulled out; when using AC, insert the short-circuit rod.
2. Test Transformer with Taps:
In order to simultaneously satisfy the contradiction between higher voltage and smaller current, and lower voltage and larger current, the high-voltage winding is divided into two windings: one with larger current and the other with smaller current. Then the two windings are connected in series and led out separately. Schematic diagram is shown.
3. Cascade Test Transformer:
To obtain a test transformer with higher voltage, the cascade method can also be used to achieve higher voltage. Figure 2 shows the principle wiring diagram of a three-stage cascade test transformer. The capacity and voltage relationship of the three transformers satisfies: P1=2P2=3P3, U(total)=1U+2U+3U.
Keywords: TQSB AC/DC high voltage test transformer structure and working principle, TQSB AC/DC high voltage test transformer structure and working principle,
Product Structure:
This series of products has a single-phase core type iron core, made of cold-rolled oriented silicon steel sheets laminated, and fastened with steel clamps. The high-voltage coil is a cylindrical multi-layer tower type, wound with polyester enameled wire and high withstand voltage insulating materials. The low-voltage coil is on the outside, and the instrument coil is an independent winding, generally 100V. The shell is octagonal, and test transformers above 10KVA are equipped with movable iron wheels. It has the characteristics of light weight, small size, easy movement, and superior performance.
TQSB AC/DC High Voltage Test Transformer Technical Specifications:
> Rated Capacity: 1～300KVA
> Single Unit Rated Output Voltage:
(AC) 50, 100, 150, 200, 300KV
(DC) 70, 140, 210, 280KV
> Rated Input Voltage: 200V, 400V
> Transformation Ratio: 500/1, 1000/1, 1500/1, 2000/1, 3000/1
> Transformation Ratio Error: ≤±1.5%
> Impedance Voltage: <10%
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
