Description
Overview
GAOTek dc system grounding fault earth locator configure different sensors to realize partial discharge detection of almost all electrical equipment; Humanized human-computer interface facilitates data management of different devices; Built-in ultrasonic sensor and transient ground voltage (hereinafter referred to as TEV) sensor can be externally connected with special sensors such as transformer, GIS, overhead line, cable, etc.; Non-intrusive detection method is adopted, which is more convenient than the traditional pulse partial discharge detector, because there is no need to cut off power and configure additional high-voltage source during the test; The test bandwidth range is 30kHz~2.0GHz, applicable to the detection principle of various frequency bands.
Features
- Sensors
- Ultrasonic sensor
- Transient Earth Voltage (TEV) sensor
- Compatibility with external sensors for transformers, GIS, overhead lines, cables, etc.
- Detection Mode
- Non-intrusive, no need for power cutoff or additional high-voltage sources
- Interface
- Humanized man-machine interface for easy data management
- Test Bandwidth
- 30 kHz to 2.0 GHz, suitable for various frequency bands
- Convenience
- More convenient than traditional pulse-type partial discharge detectors
Technical Specifications
| TEV measure measuring range | 0 to 60 dBmV |
| resolving power | 1dB |
| TEV measure accuracy | ±1dB |
| TEV measure Maximum pulse per cycle | 1400 |
| TEV measure Measurement frequency band | 3-100MHz |
| UHF measurement and detection frequency band | 300 MHz to 2000MHz |
| UHF measurement measuring range | 0 dBmV to 60 dBmV |
| UHF measurement accuracy | ＜1 dBmV |
| UHF measurement Sensor frequency band | 300 MHz to 2000 MHz |
| AA measurement measuring range | -6 dBμV to 68 dBμV |
| AA measurement resolving power | 1 dB |
|  AA measurement accuracy | ±1 dB |
| AA measurement Sensor center frequency | 40 kHz |
| AE measurement measuring range | -6 dBμV 至 68 dBμV |
| AE measurement resolving power | 1dB |
| AE measurement accuracy | ±1dB |
| AE measurement Frequency range | 20 kHz to 200 kHz |
| AE measurement HFCT measure | |
| AE measurement Sensor transmission impedance | 5 mV or mA |
| AE measurement Detection frequency | 1 MHz to 30 MHz |
| AE measurement sensitivity | ≤50 pC |
| Hardware Housing | ABS |
| Hardware display | 4.0-in RGB LCD display resolution: 800 x x 480 |
| Hardware connector | USB interface (also charger input),(3.5 mm) stereo headphone jack,external sensor input interface |
| Hardware headphone | 8 ohms minimum |
| Hardware SD card | standard 16 G to 64 G |
| Hardware built in battery | 3.7 V or 5000 mAh lithium battery |
| Hardware working time | about 6 hours |
| Hardware charger | AC 90 to 264 V or DC 5 V |
| Hardware humidity | 20% to 85% relative humidity |
| Hardware using temperature | -4 ℉ to 122 ℉ (-20 ℃ to 50 ℃) |
| Hardware volume | 8.26 in × 3.93 in × 1.37 in (210 mm x 100 mm x 35 mm) |
| Hardware weight | 0.88 lb (0.4 kg host) |