Products Video
Insulator Hydrophobicity Live-Line Tester Discription Video
Product Overview
During operation, composite insulators may exhibit severe surface contamination or ageing due to factors such as soiling, moisture, electrical discharges, and low temperatures. This degradation diminishes surface hydrophobicity, causing a sharp decline in surface insulation strength during wet weather conditions like rain or overcast skies. Consequently, flashover along the surface may occur, leading to pollution flashover. Conducting hydrophobicity testing on composite insulators provides valuable insight into their resistance to pollution flashover, enabling timely maintenance to prevent accidents.
Working Principle
The hydrophobicity testing technology proposed by the Swedish Transmission and Distribution Research Institute (STRI) and recommended by IEC-the spray water grading method-comprises an electric spray device, an imaging system, and hydrophobicity analysis software. The motorised spray device delivers precise, metered water mist onto insulator skirt surfaces via wireless remote control, adhering to the spray classification method specifications outlined in standard GB/T 24622. A digital camera captures high-definition hydrophobicity images of the skirt surface, which are subsequently analysed by the hydrophobicity analysis software.
Image Comparison Method
The hydrophobicity images of insulators obtained on-site are compared with standard reference images. By analysing the similarity between the test image and each standard image, the current hydrophobicity rating of the insulator is determined.
Products parameters
|
Model |
HB-HCA1 |
|
| Test Method | Spray Water Grading Method (HC Grading Method) | |
| Electric Spray Device | Operating Band |
2.4G |
| Remote Control Range | more than 100m | |
| Remote Control Power Supply | 1 x 3.6V Lithium Battery | |
| Receiving Angle |
360° |
|
| Flow Rate |
0.6L/min@3bar |
|
| Spray Angle |
30°@3bar |
|
| Spray Angle |
50-80° |
|
| Single Spray Volume |
0.7mL～1mL |
|
| Single Measurement Spray Count |
25times |
|
| Total Spray Volume |
17～25mL |
|
| Device Power Supply | 12V 2000mAh lithium battery, single charge ensures 2 hours of continuous spraying, capable of completing over 100 measurements | |
| Water reservoir capacity |
250ml |
|
| Imaging device | Imaging terminal | Dedicated camera |
| Pixel count | 8 megapixels | |
| Image format |
JPEG |
|
| Antenna | Directional, non-bendable, 5dB omnidirectional gain | |
| Terminal mounting | Adjustable universal mounting bracket | |
| Communication method | WiFi hotspot, wireless connection | |
| Transmission range | Within 50 metres | |
| Adjustment Range | Vertical fine adjustment | |
| Hydrophobicity Analysis Software | Processes post-spray images to determine static contact angles represented by water droplet shapes and insulator hydrophobicity ratings; supports manual and automated analysis. | |
| Insulated Handle | Specification | Epoxy resin |
| Length | Extendable insulated pole, total length 4.5m | |
| Operating Conditions | Ambient temperature 0°C to 40°C; wind force < Force 4 | |
Structure Description
Assembly Method:
(1) Retrieve the three antennas and install them in their respective positions: the shorter one serves as the remote control antenna, while the two longer ones function as the imaging antennas.
(2) Fill the water reservoir with an appropriate quantity of deionised water before reinstalling it in its original location. Assembly is now complete.
(3) Connect the insulated operating rod and secure it at a suitable angle to the universal joint.
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