Active Ultra High Frequency Antenna Sensor (Embedded Type)
主動式嵌入型超高頻感測器( 油浸式變壓器專用 UHF- OTE)

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Wide Bandwidth | High Sensitivity | High Directivity

Features

• Partial discharge (PD) sensor with wide bandwidth and high directivity, and high gain of 5 dBi.
• Designed to receive electromagnetic (EM) radiation with frequencies ranging from 300MHz to 3GHz of PD signals.
• Built-in PD signal receiver, increasing the sensitivity for detection.
• The dielectric window is made by PA 66 to isolate the sensor from oil and to prevent oil leakage.
• High directivity, and high gain can resist interference from the surroundings to increase the measured signal-to-noise ratio.
• The flat structure of UHF-OTE sensor does not affect the insulation distance of transformer.
• Ingress protection rating is IP 67.

高頻寬 | 高靈敏度 | 高指向性

特色

• 嵌入式超高頻部分放電感測器具有高指向性、高增益(5 dBi)及高頻寬響應特性。
• 工作頻率範圍在300MHz-3000MHz，符合局部放電所產生的電磁波頻率範圍。
• 高指向性與高增益的特性，不易受現場環境雜訊干擾，提高檢測局部放電的靈敏度。
• 法蘭片與變壓器油接觸之檢測視窗，使用PA 66強化高剛性屏蔽隔板，並以兩片油封環雙向壓封，具雙向逆止防滲漏能力，如需維 護感測器時，變壓器不需停電、洩油，只需將感測器的固定螺絲拆卸即可維護或更換，使用安全無虞。
• 天線採平面設計，與變壓器箱體平行配製，不影響變壓器原設計絕緣距離，並在檢測窗口以Waveguide傳導技術設計，完整接收 局部放電信號，適合運轉中之既設變壓器由手孔盲蓋加工安裝。
• 防護等級IP 67。

Ultra High Frequency Antenna Sensor (Embedded Type) Technical Specifications
嵌入式超高頻感測器 技術規格 ( 油浸式變壓器專用規格 )

Bandwidth | 工作頻帶	300 ~ 3000MHz ( V.S.W.R < 3.5 )
Peak Gain | 最大增益	5 dBi
Antenna Polarization | 天線極化	> 10 Bar
Maximum of Front to back Axial ratio | 最大前後軸比	10 dBi
Impedance | 特性阻抗	50 Ω
Sealed Rating | 油密等級	> 10 Bar
Connector | 訊號接頭	N Type Female
Power Supply | 電源	DC 5V