GDYT-150kW PD-free Induced Voltage Test System

1. An integrated architecture with the partial discharge (PD) detection module built into the main control console, eliminating the need for an external, standalone PD unit. The design is compact and with good anti-interference performance.

 2. Full-parameter control via a host computer. Parameters such as voltage, frequency, voltage stabilization duration, and protection thresholds can be configured, recalled, and saved using PC software, ensuring simple and intelligent operation.

3. Simultaneously displays the voltage ramping process and PD levels on the same screen, providing users with real-time PD status of the test object at any voltage level.

4. Captures discharge pulse signals via a PD-free coupling capacitor during testing. System automatically processes and analyzes the data, displaying PD values and waveform in real-time on the PC. 

5. Offers both automatic and manual test voltage adjustment, allowing voltage to ramp up or down to preset values at defined rates. The measurement and control system simultaneously acquires the applied voltage in real-time and regulates it to maintain stability. 

6. Fully isolated input/output design to effectively block circuit interference, significantly enhancing anti-interference capabilities and ensuring long-term, stable, and safe operation.

7. Precise dual-closed-loop control strategy based on instantaneous and RMS values, resulting in high control accuracy, low output waveform distortion, and superior waveform quality suitable for various complex test load conditions.

 8. With parameter memory function to automatically save settings. Combined with quick-access control buttons, this simplifies the setup process and ensures convenient, efficient operation. 

9. Continuous, real-time adjustment and free configuration of output voltage and frequency, offering flexible parameter settings to meet the testing requirements of various transformer specifications.

10. Uses an independent three-phase H-bridge power topology, delivering good load-handling capabilities and stable performance with unbalanced three-phase loads. 

11. Built-in specialized test modes for high-voltage testing scenarios such as transformer induced withstand voltage tests and PD detection, ensuring broad applicability.

12. The variable-frequency power source is equipped with a large, high-definition LCD touchscreen featuring an intuitive human-machine interface that dynamically displays test data and equipment status with high visibility.

13. Equipped with dedicated start/stop controls, the system allows for one-touch emergency shutdown in the event of anomalies during testing. The equipment rapidly decrease voltage to zero, ensuring comprehensive safety for both personnel and the apparatus. 

14. With good load compatibility, capable of stably driving resistive, inductive, and rectifier-type loads to meet diverse high-voltage testing requirements.

15. Integrates comprehensive intelligent protection mechanisms against overheating, over-current, and short circuits. In the event of an anomaly, the system rapidly inhibits output and executes an emergency shutdown, effectively mitigating the risk of damage to the equipment and the test object.

1. GDYT-150kW PD-free variable frequency power supply•

 • Rated capacity: 150kVA

• Input voltage: three-phase AC220V±20%

• Input frequency: 50-60Hz±5%

• Output voltage: three-phase AC 0-1600V

• Output frequency: 45-200Hz

• Load stability: ≤± 1%FS

• Source voltage effect: ≤± 1%FS

• Frequency stability: ≤±0.3%

• Total harmonic content: ≤2 resistive load (THD)

• Partial discharge amount: ≤10pc (rated voltage)

• Display voltage: four-digit LCD, resolution 0.01V, measurement accuracy ≤0.2%; phase voltage and line voltage optional

• Display frequency: four-digit LCD, resolution 0.01Hz

• Display current: four-digit LCD, resolution 0.001A, measurement accuracy ≤0.2%

• Display power: four-digit LCD, resolution 0.01W, measurement accuracy ≤0.2%

• Ambient temperature: -10℃～40℃

• Efficiency: ≥100%

• Air noise: <70dB (at 2 meters under rated voltage)

• Insulation withstand voltage: input to shell and output: ≥20M (DC1000V),

• Output to shell: ≥20M (DC500V)

• Electrical strength: input to shell and output: AC1500V/min, leakage current <20mA, Output to shell: AC1500V/min, leakage current <20mA

• Cooling method: forced air cooling

• Shell protection level: IP20

2. TAWF-150kV/500pF PD-free coupling capacitor

• Rated voltage: 150kV

• Nominal capacitance: 500PF

• Measurement accuracy: <1%

• Dielectric loss: <0.2%

• Structural form: removable

• Withstand voltage level: withstand voltage for 1 minute at 1.1 times the rated voltage, no abnormality

• Partial discharge: ≤10PC (rated voltage)

• Running time: 10 minutes

• Insulation type: oil type

3. GDJF-2007 PD Analyzer

• Measurement channels: 4 independent measurement channels

• Sampling accuracy: 12Bit

• Sampling rate: maximum 100MHz per channel

• Detection sensitivity: 0.1pC

•Measurement range: 0.1pC-10000nC

• Dynamic range: greater than 80dB

• Capacitance range of testable products: 6pF-250µF

• Measurement frequency band: 3dB bandwidth 10kHz - 1MHz

• Test power frequency range: 50-400Hz

•Programmable filter segmentation: low-end frequencies 10K, 20K, 40K, 80K; High-end frequencies 100K, 200K, 300K, 1000K;

• Nonlinear error in this range: 5%

• Measuring range: X1, X10, X100, X1000, X10000, X100000 (>120dB)

• Voltage impact resistance: 5000V, at each input port and power supply terminal (positive, negative, AC)

• Power supply: AC220V±10%; frequency 45-65Hz; power <500W