What Are The Characteristics Of Constant Voltage Transformer?

From the appearance, the Constant Voltage Transformer(CVT) has a single core structure and is different from ordinary transformers only in that the primary coil and the secondary coil of the constant voltage transformer are separated by a magnetic shunt with an air gap. In addition, a resonant capacitor is connected in parallel with the output coil. The resonant capacitor coil can be set separately from the output coil so as to reduce the required capacitance by increasing the oscillation voltage. In particular, the necessity of a constant voltage transformer with multiple groups of low-voltage outputs is even greater. Characteristics and uses of constant voltage transformers: 1. Simple structure and high reliability 2. High voltage stability and wide voltage regulation range. Under rated load, when the input voltage changes within the range of ±20 of the rated value, the output voltage regulation accuracy can be limited to ±1. It is particularly worth noting that the voltage regulation range of the constant voltage transformer is related to the output load. When the output load decreases, the stability range The stable range of the constant voltage transformer can be widened accordingly. It is related to the load. This feature is unmatched by any other form of electronic voltage stabilizer, which makes it particularly suitable for occasions where the grid voltage fluctuates greatly. 3. The constant voltage transformer has a strong anti-interference ability. The circuit form of the constant voltage transformer is actually equivalent to a resonant filter. It has the performance of a low-pass filter and can resist interference of frequencies from hundreds to tens of thousands of Hz. 4. It has the functions of an ordinary transformer: the constant voltage transformer has the functions of primary and secondary isolation, voltage transformation, and multiple output groups like an ordinary transformer. 5. Output power protection: When the output power of the constant voltage transformer exceeds the design power, its output voltage loses its stability function and begins to show a drooping characteristic. At the same time, the input power does not increase, but the output voltage is zero when the output is short-circuited. The output current is less than 1.5-2 times the rated output current, while the input current does not increase. The constant voltage transformer will not burn out if it is short-circuited for a long time. Disadvantages: 1. Poor consistency of batch products 2. Poor output characteristics 3. Poor output waveform 4. Poor frequency characteristics 5. High temperature rise and high noise.