| Customization: | Available |
|---|---|
| After-sales Service: | Yes |
| Warranty: | 1 year |
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GDPD-505 Portable Partial Discharge Detector 
GDPD-505 is a portable multi-functional PD online detector, which is suitable for testing transformers, GIS, switch cabinet, power cables, lightning arrester and CT/PTs.
The system includes detector, software, HFCT(high frequency current transformer), calibration pulse generator, 40kHz ultrasonic sensor, 150kHz ultrasonic sensor, UHF sensors, TEV sensors, Acoustoelectric sensors and some connection cables.
It uses pulse current, ultrasonic and UHF technology, to detect and analyze HF electromagnetic signals and ultrasonic signals of internal transformers and GIS, so that to detect and evaluate the running status of GIS, transformers.
Features
1. The main detector is portable design, robust and reliable.
2. Using 14inch laptop, built-in 20Ah Li-battery. Working up to 4hours without external power supply.
3. Strong anti-interference ability. Using digital filtering technology, effectively eliminate field interference. Multichannel data collection. Comprehensive analysis of electromagnetic wave and ultrasonic wave generated by partial discharge.
4. Easy wiring. BNC port for sensors and detector.
5. Strong software functions. With PD measurement and analysis, Measurement and analysis of PD repeat discharge times "n", anti-fixed interference, anti-dynamic interference, display mode of ellipse, straight line and sine wave can be selected.
6. The discharge result is accorded with IEC60720 standard. The display value unit is pc and mV.
Specifications
| Measurement channel | 2-4pcs independent measurement channel |
| Sampling rate | Max. 100MHz of each channel |
| Sensitivity | 1pc |
| Measurement range | 1pc-10000pc |
| Dynamic range | >80dB |
| Bandwidth 3dB of measurement frequency band | 10kHz-30MHz |
| Digital filter | Any setting within 50kHz-30MHz |
| Power Supply | AC 220V±10%, 50Hz, power <50W |
| Environment temperature | -20ºC-60ºC |
| Relative humidity | ≤ 95% |
| Altitude: | ≤3000m |
Sensor specifications
a. Acoustic electric integrated sensor
| Measurement mode | Non-contact |
| Signal transmission mode | Optical fiber |
| Measurement signals: | Ultrasonic signal, electric signal |
| Detecting frequency band | 50kHz~20MHz |
| Signal transmission mode | 50Ω Coaxial Cable |
| Sensitivity | 1pC |
b. Calibration
The square-wave generator special line passes through the high frequency current transformer, and then the high frequency current transformer BNC interface is connected with the BNC interface of the host machine marked with an electric signal.
(For example, adjust the square wave generator to 100pC step, then display 100pC in the software interface, namely the signal calibration. Specific use method is mentioned in software instruction)
c. HFCT is an open type design, the current transformer is installed on the ground wire of the cable joint, fastening.
(Note: closed gently when fastening. Fasten mode of current transformer adopts magnetic adsorption, may occur at the openings of damage to the transformer due to impact)
2. Acoustic electric detection (Adopts acoustic electric integrated sensor)
a. Using optical fiber to connect optical signal terminal of acoustic electric integrated sensor with optical signal terminal of the host, open the snap switch, switch step to optical signal terminal.
(Note: when using optical signals, host needs to power on, press the rocker switch on the right crone of host panel, when the switch indicator light is on, indicates the battery switch is turned on, can start testing.)
b. Put the acoustic electric integrated sensor near the discharge point, using high voltage insulation rod and optical fiber to isolate high voltage, detection under the case of no connection to the cable, the specific detection principle is shown as below:
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