The AA Ultrasonic acoustic probe is designed for use on air insulated terminations where a clear sound path between the electrically stressed insulation and the probe is present. The sensor is extremely sensitive and can detect activity below 10pC. The probe has a magnetic base to allow coupling to steel enclosures and a swivel head as so the detecting sensor can be aimed directly at the HV point. Corona in air and surface tracking can seriously damage high voltage insulating surfaces in a way that will ultimately lead to flashover and complete failure of the insulator. This discharge activity creates acoustic emission that can be detected using a high frequency sensor. The magnitude of the acoustic emission is indicative of the degree and severity of the discharge activity.
Thông số kỹ thuật
| requency response |
40kHz |
| Receiving Sensivity |
-61dB min at 40.0KH 0dB= 1 volt/ u bar |
| Sensor head swivel |
360 degrees |
| Dimensions |
70 x 30mm |
| Power Requirements |
12VDC, up to 150mA |
| Output Connector |
75g |
| Weight |
0.05kg |
| Coupling |
Magnetic |
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