Wrindu

Wrindu Series Resonance Transformer Withstand Voltage and Partial Discharge Test System

The system is suitable for partial discharge and induced withstand voltage testing of transformers up to 400kV/350MVA. It adopts a linear amplification AC frequency converter with low-distortion sine wave output, supports automatic voltage regulation, and includes overvoltage and overcurrent protection for safe and reliable operation.
Model:RDXB(WJ)-450kW

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PRODUCT FEATURES

 

1. Designed for induced voltage withstand testing and partial discharge testing of power transformers rated up to 400kV/350MVA.

2. The AC frequency converter uses a linear amplification design to provide stable sine wave output with very low waveform distortion.

3. Supports automatic stable voltage regulation for reliable testing performance.

4. Equipped with multiple safety protections, including overvoltage and overcurrent protection, ensuring secure and dependable operation.

5. High-voltage signals are transmitted through optical fiber technology, fully separating high-voltage and low-voltage circuits for improved safety.

6. Offers both automatic operation mode and manual control mode to meet different testing requirements.

7. Voltage, current, and frequency values are displayed simultaneously for convenient monitoring during testing.

8. Supports resonant AC withstand voltage testing functions.

9. Features automatic resonant frequency tracking and allows automatic scanning across multiple frequency ranges.

 

FAQs

 

Q1: What type of transformers can the RDXB(WJ)-450kW Series Resonance Test System test?
A1: The system is designed for partial discharge and induction withstand voltage testing of power transformers up to 400kV and 350MVA. It is suitable for both distribution and power transformers within these ratings.

Q2: How does the AC power frequency converter ensure accurate testing?
A2: The AC power frequency converter uses a linear amplification circuit, providing a stable sine wave output with minimal waveform distortion, which ensures accurate and reliable test results.

Q3: Can the test voltage be automatically adjusted?
A3: Yes, the system supports automatic and steady voltage adjustment, allowing safe, consistent, and efficient testing without manual intervention.

Q4: What safety features are included in the RDXB(WJ)-450kW?
A4: The device includes overvoltage and overcurrent protection, as well as other safety mechanisms to prevent damage to the equipment or transformer under test, ensuring secure and reliable operation.

Q5: How does the system isolate high-voltage signals?
A5: High-voltage signals are transmitted through optical fiber technology, which fully isolates the high-voltage circuit from the low-voltage control circuit, enhancing safety during testing.

Q6: Does the system support both manual and automatic testing?
A6: Yes, it provides both automatic and manual control modes, allowing operators to select the mode that best suits their testing procedures and requirements.

Q7: How are test parameters monitored?
A7: Voltage, current, and frequency are displayed simultaneously, enabling operators to monitor testing parameters in real-time and ensure accurate measurements.

Q8: Can the system perform resonant withstand voltage tests?
A8: Yes, the RDXB(WJ)-450kW is capable of resonant AC withstand voltage testing, which allows for precise testing of transformer insulation performance.

Q9: Does the system have an automatic frequency search function?
A9: Yes, it features an automatic resonant frequency search and can sweep across multiple frequency segments automatically, improving testing efficiency and accuracy.

Q10: How does this system help improve transformer maintenance and diagnostics?
A10: By providing precise partial discharge and withstand voltage testing with optical isolation and accurate measurements, the system allows utilities to identify insulation weaknesses early, reduce risks, and optimize maintenance planning.

No. Parameter Specification
1 Rated input power supply 380V ±10% (three-phase), 50Hz
2 Rated output power 450kW
3 Rated output capacity 450kVA
4 Rated output voltage Single phase 0–350V
5 Output phase Single phase
6 Adjustable frequency range 20Hz–300Hz
7 Output frequency resolution 0.01Hz
8 Output frequency instability ≤0.05%
9 Output voltage waveform Sine wave; waveform distortion ≤1.0%
10 Partial discharge amount ≤10pC
11 System working hours 90 minutes
12 Insulation level 1.2× rated voltage withstand, 1 min
13 Noise level ≤85dB
14 Quality factor Q >100 (f = 30Hz)
15 AC power frequency converter 450kW, push-pull linear amplification

Wrindu Series Resonance Transformer Withstand Voltage and Partial Discharge Test System PDF

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