I. Product Overview
With its advantages of compact structure and high reliability, GIS has become the mainstream equipment in ultra-high voltage and ultra-high voltage power systems. With the widespread application of GIS, the reliability of GIS equipment operation has caused widespread concern in the international community and the power sector. From nearly 40 years of operating experience, insulation failure has always been one of the important reasons affecting the reliability of GIS. Partial discharge is the main manifestation of insulation degradation of GIS equipment until flashover failure occurs. Once an insulation fault occurs in the GIS, it is very easy to cause equipment failure, which will disrupt the normal operation of the power system and adversely affect the normal order of the national economy and society. Therefore, the realization of GIS partial discharge online detection is of great significance.
YC9300CUHF partial discharge Tester is a digital partial discharge charged detection instrument designed by our company based on years of experience in partial discharge measurement. It adopts two emerging technologies, ultra high frequency (UHF) measurement and ultrasonic (US) measurement. This system uses modern electronic and computer integrated technology to realize signal amplification, filtering, data acquisition, data processing, partial discharge parameter calculation, map drawing, and automatic generation of test reports, thereby completing the intelligent measurement and analysis of partial discharge. This device adopts handheld design and Wince system development; the device is lightweight, convenient to carry, fast to measure, and easy to use on the spot; it has friendly interface, simple operation, and high refresh rate; and the device has complete functions, strong anti-interference ability, and accurate measurement. This instrument has no damage to the power equipment to be tested during the testing process, and has no impact on the operation of the equipment. According to the maps obtained by the multiple detection modes of the UHF and US methods, the diagnostic analysis of the detection of insulation defects or hidden dangers of power equipment can be performed to clearly determine the operating status of the power equipment.
2.Technical Parameter
| Host parameters | |
| Number of interfaces | 2 interfaces，1 UHF interface，1 US interface |
| Sampling accuracy | 12bit |
| Way of synchronization | Internal synchronization,External synchronization, Light synchronization |
| UHF parameters | |
| Measurement frequency range | 300MHz-1.5GHz |
| Output method | Output with SMA head |
| Receiving method | Receive with antenna |
| Transfer method | Coaxial cable |
| Sensitivity | <-60dBm |
| US parameters | |
| Frequency range | 20-120kHz |
| Gain | 40dB±1dB |
| Peak sensitivity | >70dB |
| Mean sensitivity | >50dB |
| Dynamic Range | >80dB |
| Hardware | |
| Display screen | 4.3” TFT true color LCD screen |
| Resolution | 480×272 |
| Operate | Membrane button |
| Storage | SD card comes standard with 8G card, maximum support 32G |
| Interface | 3.5mm stereo headphone jack |
| DC-005 low voltage DC charger input interface | |
| Charging LED indicator | |
| RS232 debug interface | |
| USBD sync interface | |
| USB2.0 | |
| Network interface | |
| SD card slot | |
| Power | |
| Internal power | Battery powered (16.8V lithium battery) |
| Normal working hours | About 7 hours, full time about 3 hours |
| Size | |
| Length×width×height | 235mm×133mm×48mm |
| Weight | 0.85kg |
| Environment | |
| Ambient temperature used | -20℃～50℃ |
| Ambient storage temperature | -40℃～70℃ |
| Humidity | 10% -90% (non-condensing) |
| Altitude | ≤3000m |
