According to the national standard GB311-64 and the "Precautionary Test Rules for Electrical Equipment" issued by the former Ministry of Hydropower, it was designed to meet the requirements of the power system for high-voltage voltage Transformer and multi-frequency induction pressure-resistant test equipment. It is widely used in AC voltage test of 35-220KV voltage Transformer in power system to assess the main and longitudinal insulation strength of Transformer. It can also be used for induction pressure test of winding of motor and Transformer, and can also be used for short-term operation. 150HZ power supply.

The HYG-3KVA multi-frequency induction voltage tester uses the saturation characteristics of the magnetic circuit to remove the third harmonic voltage with the largest component of the harmonic, as the generator's power supply. For the induction coil type electrical products, the frequency and pressure test are performed between turns, sections, and layers; To check the coil insulation strength, pressure level.

It consists of a three-phase five-column Transformer(or three single-phase Transformers), a single-phase regulator, a reactor, and a control part. According to the requirements of the user, the shape can be holistic or can be divided.

According to the national standard GB311-64 and the "Precautionary Test Rules for Electrical Equipment" issued by the former Ministry of Hydropower, it was designed to meet the requirements of the power system for high-voltage voltage Transformer and multi-frequency induction pressure-resistant test equipment. It is widely used in AC voltage test of 35-220KV voltage Transformer in power system to assess the main and longitudinal insulation strength of Transformer. It can also be used for induction pressure test of winding of motor and Transformer, and can also be used for short-term operation. 150HZ power supply.

The HYG-3KVA multi-frequency induction voltage tester uses the saturation characteristics of the magnetic circuit to remove the third harmonic voltage with the largest component of the harmonic, as the generator's power supply. For the induction coil type electrical products, the frequency and pressure test are performed between turns, sections, and layers; To check the coil insulation strength, pressure level.

It consists of a three-phase five-column Transformer(or three single-phase Transformers), a single-phase regulator, a reactor, and a control part. According to the requirements of the user, the shape can be holistic or can be divided.

Technical parameters

Input voltage: 380V50HZ

Output Voltage: Single Phase 300V, 500V, 800V, 1000V Single Phase 150HZ

(For higher voltage, external booster transformer)

Output capacity: 20 % of product capacity

Harmonic distortion: 5 % -8 %

Unloaded running time: ≤ 5 minutes

Test duration at rated voltage: 40 seconds

Conditions for use

1. Height: ≤ 3000M;

2. Environmental temperature: -10 °C-+40 °C;

3. Relative humidity: 95 %;

4. Site of use: no steam, corrosive gases and flammable and explosive media.

It consists of a three-phase five-column Transformer(or three single-phase Transformers), a single-phase regulator, a reactor, and a control part. According to the requirements of the user, the shape can be holistic or can be divided.

It is widely used for double frequency induction voltage test of voltage Transformer.

The voltage resistance test of power transformer is carried out by multifrequency induction.

Multifrequency induction pressure test for other inductive coil type electrical products.

HYG-3KVA multi-frequency induction pressure tester is a better device for induction pressure resistance. It is widely used in the test of transformer and transformer equal frequency pressure and has a wide range of uses. In order to better understand its performance, the following additional explanations are made:

The energy of a 1-and triple-frequency Transformer is taken from three harmonics in the market, and the synthetic magnetic field is zero for 50 weeks under magnetic saturation, so the output power of 50 weeks is zero; The maximum output is only 3 harmonics(150 weeks) of power, but the output power is only less than 20 % of the input power. The power on the general sign refers to the input power.

2, fever is the inevitable result of the triple frequency Transformer, because the Transformer is operating in the magnetic saturation state, the iron core must be hot, so the triple frequency power supply is a short-term work system when used, the general power supply time is 5 minutes, the test time is 40 seconds, Each test must be disconnected. After 3-5 minutes, you can do another test and repeat it many times.

3, to the voltage transformer double pressure test, must increase the compensation link, which can improve the waveform of the triple frequency power supply, but also can increase the output power of the triple frequency power supply.

4, can not be tested for the 10KV / voltage transformer, because the 42KV induction voltage must be added 7.3 times the voltage at the secondary 100 side, in this state, due to the high saturation of the magnetic path, this test is difficult to achieve.

The output voltage above 5, 500 V must be lifted by the booster due to the regulator.

6, 35 KV voltage transformer induction and local discharge test

After connecting and checking the line, the three-frequency power supply is input into the low-voltage side of the 35KV Transformer, and the voltage is raised to the required high voltage(such as 93KV) for 40 seconds through the regulator. Then drop to the approved voltage of the measurement station(such as 42KV) to read the release of the tested product, then reduce the test voltage to zero, and immediately cut off the total input power supply test and the test is completed.

If you are equipped with a 100KV and 1000P coupling capacitor when playing, this 1000P capacitor increases the capacity of the input and the current increases by 25A-30A; The current entering the excitation itself is about 12A-15A, and the total current is between 40A-45A. The line diameter of the low-voltage side of the 35KVPT is generally #2.11 mm. The direct pressurization test is extremely difficult. The electromagnetic line of #2.11 mm is also difficult to withstand., Therefore, it is necessary to use a power compensated triple frequency power supply as a test power supply.

7, using the input voltage regulation method of the triple frequency device, the output voltage has only one stage, can not meet the requirements of the multi-stage test voltage, generally avoid use.