The inductive pressure test of transformer and Transformer is an important test to ensure that Transformer quality meets the national standard. The longitudinal insulation induction pressure test of interramp, interlayer, intersegment and interphase insulation of transformer winding is an important project in Transformer insulation test. Based on the particularity of the longitudinal insulation test, the test voltage of the interwinding insulation should be improved by applying the double frequency power supply device to achieve the purpose of the pressure resistance test.

The HYG triple frequency generator is designed and manufactured to meet the above requirements. After being used by a large number of users, it is proved that its operation is simple, its performance is reliable, and it can better meet the needs of transformer and transformer induction pressure test.

1. Input voltage: three-phase 380V50HZ

2. Output voltage: single phase 0 ~ 500V(continuously adjustable)

Frequency: 150HZ

3. Input capacity: 10KVA harmonic distortion: 5 % -8 %

4. Unloaded running time: ≤ 5 minutes

5. Test duration at rated voltage: 40 seconds & lt; & GT;

The device consists of three single phase variable pressures, which work as shown in the figure below

The primary winding of the three single-phase Transformers is star-shaped, and the secondary winding is connected to an open triangle, because the voltage added to the primary winding is higher, the core is saturated, and the three single-phase Transformers have base frequency components. And triple frequency components, Three single-phase Transformers are connected by a quadratic open triangle to cancel the base frequency component, so that the frequency multiplier voltage output of the open triangle can be implemented, and the triple frequency voltage can be adjusted by winding the external single-phase regulator.