Triple frequency power generator, triple frequency voltage generator, triple frequency high voltage generatorThis product is designed to meet the requirements of the<>,<>, and<<Preventive Testing Regulations for Electrical Equipment>>1995 for triple frequency induction withstand voltage test and partial discharge test.
The induction withstand voltage test of transformers and mutual inductors is an important test to verify whether the product complies with national standards. The longitudinal insulation induction test of interlayer, turn to turn, section to phase insulation of windings is an important item to test whether the windings meet the requirements. In order to increase the winding test voltage and prevent the iron core of the transformer or mutual inductor from being supersaturated and causing excessive excitation current, it is necessary to increase the test frequency, usually 100Hz or 400Hz
There are multiple methods to obtain a 100Hz 400Hz power supply, among which the more suitable ones are:

① Combination of three variable frequency generators (100Hz 400Hz);

② Three single-phase transformers combined (150Hz), and the most convenient method is still the second method

The combination method of three single-phase transformers: the primary side is connected in a star shape, and the secondary side is an open triangle. When the iron core is not saturated, the main magnetic flux generated by it must be a flat topped wave. Due to the presence of a significant third harmonic magnetic energy Φ 3 in the main magnetic flux of the flat topped waveform, with a frequency of f3=3f1, the main magnetic flux induces a third harmonic phase potential.
Due to the star connection on the primary side and the open triangle connection on the secondary side, the iron core operates in a saturated state, and the no-load current I exhibits a sharp peak wave, which contains not only the fundamental wave but also higher-order harmonics. The amplitude of I in its high-order harmonics is relatively large, and due to the opening of the secondary side, the three-phase fundamental components cancel each other out, leaving only the third harmonic output.
The overall voltage output is achieved by tuning the 150Hz power supply to produce resonance. It is normal for resonance to produce a certain amount of screaming sound when the voltage increases.

Technical Specifications
Rated capacity: 5-100kVA
Input three-phase 380V, 50Hz sine wave

Output 0-300V, 0-500V, 0-1000V (customized for special voltage), 150Hz,

Waveform distortion ≤ 1%

Capacity: 3-150kVA

Idle running time: ≤ 5 minutes

Load running time: 40-60 seconds

Note: The above technical parameters are for selection reference only and may be adjusted with the continuous progress of technology. Welcome to call: (24 hours)