Description
Overview
GAOTek ultrasonic partial discharge equipment DC system grounding fault earth locator configure different sensors to realize a partial discharge detection of almost all equipment; humanized human computer interface facilities data management different devices. Built-in ultrasonic sensor and transient ground voltage (hereinafter referred to as TEV) sensor can be externally connected with the special sensors such a transformer, GIS, 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 30 kHz to 2.0 GHz, applicable to the detection principle of various frequency bands.
Features
- Test bandwidth 30 kHz to 2.0 GHz
- Ultrasonic & ground voltage sensor built-in
- Non-invasive detection method
- Convenient & no power cut off
- Humanized interface for data management
- Simultaneous PD signal interpretation
- Suitable for various frequency bands
- Special sensors for transformers, GIS, etc
Technical Specifications
| Connector | USB interface (also charger input), 0.13 in (3.5 mm) stereo earphone jack, External sensor input interface | ||||
|  Headset | At least 8 Ω | ||||
| Â Built-in battery | 3.7 V to 5000 mAh lithium battery | ||||
| Â Working time | about 6 hours | ||||
| Â Charger | AC 90-264 V or DC 5 V | ||||
|  Temperature | -4 °F to 122 °F (-20 °C to 50 ℃) | ||||
| Â Humidity | 20 to 85 % relative humidity | ||||
|  Dimension | 8.26 in ´ 3.93 in ´ 1.37 in (210 mm´ 100 mm ´ 35 mm) | ||||
| TEV Measurement | UHF Measurement | ||||
| Measurement range | 0 to 60 dBmV | Detection frequency band | 300 to 2000 MHz | ||
| Resolution | 1 dB | Measurement range | 0 to 60 dBmV | ||
| Accuracy | ± 1 dB | Accuracy | < 1 dBmV | ||
| Maximum pulse per cycle | 1400 | Sensor frequency band | 300 to 2000 MHz | ||
| Measurement frequency band | 3 to 100 MHz | ||||
| AA Measurement | AE Measurement | ||||
| Measurement range | -6dB μV to 68 dBμV | Measurement range | -6dBμV to 68 dBμV | ||
| Resolution | 1 dB | Resolution | 1 dB | ||
| Accuracy | ± 1 dB | Accuracy | ± 1 dB | ||
| Sensor center frequency | 40 kHz | Frequency range | 20 to 200 kHz | ||
| HFCT Measurement | |||||
| Sensor transmission Impedance | 5 mV / mA | ||||
| Detection frequency | 1 to 30 MHz | ||||
| Sensitivity | ≤ 50 pC | ||||