Hv Resonant Test System

MOEORW-W5604Q Hv Resonant Test System

The MOEORW-W5604Q 54kVA/54kV AC Resonant Test System is specifically designed for AC withstand voltage testing of 10kV power equipment.

It is compatible with various test samples such as cables and transformers, and is lightweight and portable, meeting the needs of on-site operations.

It consists of core components such as frequency converter, excitation transformer, and reactor.

Equipped with three working modes, it supports flexible switching and achieves higher testing efficiency.

It includes multiple protections such as overvoltage and overcurrent, and can record voltage values when the test sample flashes over.

It features high measurement accuracy, minimal waveform distortion, and supports data storage and remote printing.

Hv Resonant Test System This instrument is designed and manufactured primarily for AC withstand voltage testing of all main electrical equipment, including 10kV substations and transmission lines. The reactors are designed in multiple separate units, meeting both high-voltage, low-current equipment testing requirements and low-voltage AC withstand voltage testing requirements. It has a wide range of applications and is an ideal withstand voltage testing device for municipal, county, and prefecture-level high-voltage testing departments, as well as power installation and maintenance engineering units.

AC High Voltage Test Sets of a frequency converter, an excitation transformer, a reactor, and a capacitor divider.

1.2 The required power supply capacity is greatly reduced. The series resonant power supply uses the resonance of the resonant reactor and the capacitor of the test object to generate high voltage and large current. In the entire system, the power supply only needs to provide the active power consumption part of the system. Therefore, the power required for the test is only 1/Q of the test capacity.

1.3 The weight and volume of the equipment are greatly reduced. In the series resonant power supply, not only are bulky high-power voltage regulating devices and ordinary high-power power frequency test transformers eliminated, but the resonant excitation power supply only needs 1/Q of the test capacity, which greatly reduces the weight and volume of the system, generally to 1/10-1/30 of ordinary test equipment.

1.4 Improved output voltage waveform. The resonant power supply is a resonant filter circuit that can improve the waveform distortion of the output voltage, obtain a good sine waveform, and effectively prevent harmonic peaks from causing false breakdown of the test sample.

1.5 . Preventing large short-circuit currents from burning out fault points. In series resonance, when the insulation weakness of the test specimen is broken down, the circuit immediately detunes, and the loop current rapidly drops to 1/Q of the normal test current. However, in parallel resonance or withstand voltage testing using a test transformer, the breakdown current immediately increases by tens of times. Compared to the two methods, the short-circuit current and breakdown current differ by hundreds of times. Therefore, series resonance can effectively locate insulation weaknesses without the risk of large short-circuit currents burning out fault points.

1.6 No recovery overvoltage will occur. When the test sample breaks down, the high voltage disappears immediately due to the loss of resonance conditions, the arc is extinguished instantly, and the re-establishment process of the recovery voltage is very long. It is easy to disconnect the power supply before the flashover voltage is reached again. This voltage recovery process is an intermittent oscillation process of energy accumulation. The process is long, and no recovery overvoltage will occur.

(a) MOEORW-W5604Q (54kVA/54kV) refers to the manufacturer's code.

54 refers to the maximum rated output capacity of the equipment, measured in kVA .

54 refers to the voltage level that the equipment can output, in kV ;

(II) Technical Specifications of MOEORW- W 560 4 Q (54kVA/54kV) Variable Frequency Series Resonant AC Withstand Voltage Device

1. Rated voltage:

2. Input power: AC 220 V or three-phase 380V voltage, frequency 50Hz;

3. Rated voltage: 54 kV, 27 kV;

4. Rated current: 1A, 2A ;

5. Operating frequency: 30~300Hz;

6. Device output waveform: sine wave

7. Waveform distortion rate: Output voltage waveform distortion rate ≤1%;

8. Operating time: 60 minutes continuously under rated load ; 1 minute under 1.1 times overvoltage;

9. Temperature rise: After continuous operation under rated load for 60 minutes, the temperature rise is ≤65K;

10. Quality Factors: The device's own Q ≥ 30 (f = 45Hz);

11. Protection functions: Overcurrent, overvoltage and flashover protection for the test sample (see the frequency converter power supply section);

12. Measurement accuracy: System effective value 1.0 grade ;

(iii) Equipment conforms to standards

(iv) Main equipment configuration and technical parameters: