The GHPD903 Transformer Partial Discharge Tester is equipped with composite TEV sensors, UHF sensors, high-frequency current transformers, and high-sensitivity ultrasonic sensors to collect partial discharge signals inside high-voltage equipment.. By collecting different signals generated by partial discharges inside various high-voltage equipment, the operating status of the equipment can be quickly detected online.
The instrument can be installed and tested while the equipment is in operation, without any impact on the normal operation of the equipment, greatly improving the reliability, safety, and effectiveness of equipment operation. Note: Mainly for partial discharge inspection and positioning of switchgear, main transformers, GIS, and cables.
The GHPD903 Transformer Partial Discharge Tester is developed by our company's technical personnel based on years of partial discharge detection experience, suitable for online detection and positioning of partial discharges in high-voltage equipment.
GHPD903 Transformer Partial Discharge Tester Functional Features
1. Suitable for partial discharge inspection and positioning of switchgear, main transformers, GIS, and cables, with contact measurement; additionally configured with TEV sensors and HFCT sensors for multi-angle testing of the test object;
2. Compact structure, handheld, tool-type, small size, light weight, high automation, simple and practical;
3. Built-in measurement and analysis software, directly displaying discharge waveforms;
4. The sensor is stethoscope-type, featuring large contact area, strong anti-interference capability, high sensitivity, accurate measurement, simple operation, safety, and reliability;
5. Simple to use, no complex settings required, ready to use upon power-on;
GHPD903 Transformer Partial Discharge Tester Technical Parameters
1. Composite TEV Measurement
Sensor: Capacitive
Measurement Range: 0～60dBmV
Resolution: 1dB
Error: ±1dB
Detection Bandwidth: 5~70MHz
Pulses/Cycle Maximum: 655
Threshold Adjustment Range: 3～57dB
2. High-Frequency Current Transformer
Detection Frequency Band: 10kHz～30MHz
Signal Transmission: 50Ω Coaxial Cable
Detection Sensitivity: 10pC
3. Ultrasonic Sensor
Measurement Range: -7dBμV～68 dBμV
Resolution: 1dB
Error: ±1dB
Sensor Sensitivity: -65dB (0dB = 1volt/μbar SPL)
Sensor Center Frequency: 20～50kHz
Sensor Diameter: Not greater than 50mm
Heterodyne Frequency: 38.4kHz
4. UHF Sensor
Detection Frequency Band: 300MHz～1.5GHz
Signal Transmission: 50Ω Coaxial Cable
Detection Sensitivity: 1dB
Gain: >65dbm
5. Product Type: Multifunctional Partial Discharge Testing
Display: 2.8-inch Color LCD Screen
Dimensions: 300 mm×240 mm×40 mm
Weight: 2.8kg
