Active Ultra High Frequency Antenna Sensor ( Submerged Type )
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Active Ultra High Frequency Antenna Sensor ( Submerged Type ) Features
主動式浸入式超高頻感測器 - 油浸式變壓器專用 UHF-OTS 產品特點
- High directivity, high gain(2.8 dBi), and wide bandwidth.
- Bandwidth ranges from 300MHz to 3000MHz, corresponding to electromagnetic wave frequency.
- Reduce jamming from surroundings and thus raise sensitivity for PD inspecting with its high directivity and high gain.
- The material of inspect window with cylinder shape between flange and insulation oil is PTFE, enduring high pressure and temperature. Sealed with double oil rings which has bidirectional-backstop ability to prevent leaking, bearing pressure of 10 bars or above.
- The antenna can be dismantled. No need to turn off power or leak oil of the transformer for maintenance, just disassemble the fixed screw of sensors for maintenance or change safely.
- Protection Level is IP67.
主動式浸入式超高頻感測器 - 油浸式變壓器專用 UHF-OTS 產品特點
- 浸入式超高頻部分放電感測器具有全向性、高增益(2.8 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。
- 全向性與高增益的特性,可降低現場環境雜訊的干擾,提高檢測部分放電的靈敏度。
- 基座法蘭與變壓器絕緣油接觸之介質檢測視窗,採用鐵氟龍(PTFE)製作成圓筒形,具耐高壓(拉)力、耐高溫及抗油性等特 性,並以雙重油封環密封,具雙向逆止防滲漏能力,可承受10 bar以上壓力。
- 天線設計為可拆卸結構,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。
- 防護等級 IP67。
主動式浸入式超高頻感測器規格 ( Active UHF-OTS Specification ) - 油浸式變壓器專用
Bandwidth | 工作頻帶 |
300 ~ 3000MHz ( V.S.W.R < 5 ) |
Peak Gain | 最大增益 |
2.8 dBi |
Antenna Polarization | 天線極化 |
> 10 Bar |
Maximum of Front to back Axial ratio | 最大前後軸比 |
18 dBi |
Impedance | 特性阻抗 |
50 Ω |
Level of Oil tight | 油密等級 |
> 10 Bar |
Connector | 訊號接頭 |
BNC |