PD Sensor | High Sensitivity | Narrow-bandwidth Testing
局放試驗 | 高靈敏度 | 窄頻檢測
When PD occurs inside the insulation of high voltage equipment, molecule inside dielectric material collides with neighbor molecule and produces microwave. Ultrasonic wave can be carried to outer surface of power equipment along dielectric material and metal material. Through the AE sensor installed on the surface of power equipment can produce ultrasonic wave by coupling to identify PD in power equipment. Bandwidth for AE ranges from 30kHz to 90kHz can effectively avoid jamming of electromagnetic wave from surrounding and locate PD. AE sensor along with ultrasonic wave amplifier can raise the sensitivity for inspecting ultrasonic wave effectively.
電力設備絕緣內部發生局部放電時,介電材料內部分子和鄰近結構中的分子碰撞,伴隨產生超音波信號。超音波信號會沿著介電材料和金 屬材料傳到電力設備外殼。通過在電力設備外殼安裝的接觸式超音波感測器,可耦合出超音波信號,進而判斷電力設備的局部放電情況。 超音波檢測法的頻帶通常介於30 kHz至90 kHz之間,此法可有效避免高壓設備現場的電磁訊號干擾,亦可用於局部放電源的定位。配合超音波放大器,可有效提高超音波檢測的靈敏度。
局放試驗 | 高靈敏度 | 窄頻檢測
When PD occurs inside the insulation of high voltage equipment, molecule inside dielectric material collides with neighbor molecule and produces microwave. Ultrasonic wave can be carried to outer surface of power equipment along dielectric material and metal material. Through the AE sensor installed on the surface of power equipment can produce ultrasonic wave by coupling to identify PD in power equipment. Bandwidth for AE ranges from 30kHz to 90kHz can effectively avoid jamming of electromagnetic wave from surrounding and locate PD. AE sensor along with ultrasonic wave amplifier can raise the sensitivity for inspecting ultrasonic wave effectively.
電力設備絕緣內部發生局部放電時,介電材料內部分子和鄰近結構中的分子碰撞,伴隨產生超音波信號。超音波信號會沿著介電材料和金 屬材料傳到電力設備外殼。通過在電力設備外殼安裝的接觸式超音波感測器,可耦合出超音波信號,進而判斷電力設備的局部放電情況。 超音波檢測法的頻帶通常介於30 kHz至90 kHz之間,此法可有效避免高壓設備現場的電磁訊號干擾,亦可用於局部放電源的定位。配合超音波放大器,可有效提高超音波檢測的靈敏度。
AE sensor Technical Specifications | 超音波感測器技術規格
Center frequency | 中心頻率 |
65 kHz |
Connector | 輸出連接頭 |
BNC female |
Weight | 重量 |
160 g |
Dimension | 外部尺寸 |
45mm X 45mm X 45mm |
Amplifier | 放大器 ( Option 選購 )
Amplifying rate | 放大倍率 |
100 dB |
Voltage range | 工作電壓 |
AC 100-240V 50/60Hz |
Dimension | 外部尺寸 |
70 mm X 35 mm X 10 mm |
Weight | 重量 |
250 g |