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Power frequency Magnetic field Immunity IEC61000-4-8 工頻磁場抗擾性試驗

Power frequency Magnetic field Immunity IEC61000-4-8 工頻磁場抗擾性試驗. Provided by PH Yuan. Conductors with high currents 高電流導入 Motors 馬達 Generators 產生器 Electrical equipment 電子設備 Transformer Leakage 變壓器洩漏. Typical Occurrence. Typical effect 典型影響形式. 電流導入.

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Power frequency Magnetic field Immunity IEC61000-4-8 工頻磁場抗擾性試驗

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  1. Power frequency Magnetic field Immunity IEC61000-4-8工頻磁場抗擾性試驗 Provided by PH Yuan

  2. Conductors with high currents高電流導入 Motors馬達 Generators產生器 Electrical equipment 電子設備 Transformer Leakage 變壓器洩漏 Typical Occurrence

  3. Typical effect典型影響形式 電流導入

  4. Power-Magnetic Fields Characteristics工頻磁場之特性 • Field frequency equal to frequency of power supply system磁頻相當於電源系統之頻率 • Field strength up to more than 100 A/m 場強超過每米100安培

  5. Testing Setup 測試佈局 INA 701 Modula 6000 EUT 0.1 m thickness Insulating Support 10cm厚之絕緣支撐物 MFO 6502 磁場產生器 Ground Reference Plane

  6. MFO 6502 磁場產生器 • Automatic magnetic field option • Driven from Modula master controller using PDA or WIN Modula software 利用Modula 之Win Modula 軟體或PDA來控制輸出 • Connection to antenna loop using banana sockets 使用香蕉接頭來連接環路天線 • External Amp meter can be used to monitor the generated field: • 可利用外接電流表監測產生之場強 H = Coil factor X I(線圈因素X電流) H: Generated field (產生之磁場) I: Current flowing through antenna loop ( 流經環路天線之電流)

  7. Technical specifications CF :修正因素

  8. INA 701磁場環路天線 • Magnetic field loop 磁場環路天線 • 1 X 1 meter • Coil factor = 0.89 修正因素 • Field strengths up to 3.6 A/m for power frequency fields 針對頻率場強可提供至3.6A/m • Used with magnetic field generator, MFO 6501/6502 配合MFO 6501/6502 一起使用 • When doing testing, EUT is to be placed in the center of the loop 執行測試時待測務必須備置於環路天線之中心位置 • Field strength can be monitored via a magnetic field meter 場強可透過磁場表來做監測

  9. Installation 安裝 • Connect MFO 6502 power IN to mains. 將電源接到MFO6502磁場產生器 • Remove 25 pin interlock connector at rear panel of Modula Master Controller.將Modula後面板之25 pins interlock 連接器移除 • Connect the interlock connector to X2 of MFO 6502. 將interlock連接器連接到 MFO6502之 x2 處 • Connect Master Controller 25 pin output to MFO 6502 X1 plug, using system interface cable delivered with MFO 6502. 連接主機控制器之25pin 輸出到MFO6502x1插頭 • Connect MFO 6502 to Loop Antenna INA 701. • Power On MFO 6502. • Power On Modula main frame.

  10. Power magnetic field testing terms • Field: Field strength, unit is A/m • Frequency: Power frequency, 50Hz • Step duration: Duration of testing

  11. 術語 • 浸入法:Immersion method 將EUT置於感應線圈中心將磁場施加待測物之方法 • 鄰近法:Proximity Method 用一個小感應線圈將磁場施加於EUT之方法,沿EUT的側面移動以探 測特別敏感部

  12. 試驗等级及選擇

  13. 以上表格: • 說明50Hz配電網上穩定和短持續時間作用的磁場試驗等級之優先範圍 • 磁場強度用 1A/m 表示,1A/m 相當於自由空間的’磁感應強度為1.26uT

  14. 感應線圈 • 具三種基本形式: 1.正方形單砸感應線圈: • 標準尺寸:1m x1m 正方形線圈或是1M直徑圓形線圈用於小型台式設備其場強均勻度為±3dB以內,試驗區體積為0.6x0.6x0.5m(h) 2.正方形的雙線圈-赫爾姆霍茲線圈,他是由適當隔開之兩組 線圈組成,每個線圈由兩砸或是多線圈組成,相距0.8M的標準尺寸雙重線圈其磁場均勻性為±3dB以內,0.6m x 0.6m x1m(h) 用於較大之台式試驗設備 3.立式或大型設備用單砸感應線圈:感應線圈依照EUT尺寸和場的不同極性製造,線圈包圍EUT,其大小應使得線圈ㄓㄧ邊到EUT外殼的最小距離等於EUT尺寸之三分之ㄧ,試驗之體積是由線圈之試驗面積(每一邊之60% x 60%)乘以深度(相對於線圈較短邊之50%)來確定,線圈每一邊 比試驗設備EUT大出25-30cm

  15. Power Frequency Magnetic Field Immunity Test with MFO 6501 & INA 702工頻磁場抗擾性試驗IEC 61000-4-8

  16. MFO 6501 手動磁場產生器 • Manual magnetic field option • Rotary hand-wheel for current control 手動旋轉控制電流 • Low / High current range selector 低/高電流範圍選擇器 • 50Hz / 60Hz frequency selector 50/60Hz 頻率選擇器 • Connection to antenna loop using banana sockets 使用香蕉接頭連接環路天線 • External Amp meter can be used to monitor the generated field: 使用外部電流表監測產生之場強 H = Coil factor X I 磁場=電流因素x 電流 H: Generated field I: Current flowing through antenna loop 流經環路天線之電流

  17. INA 702 • Magnetic field loops • 1 X 1 meter • Coil factor = 9.8 • Fitted with POWER plug • Field strengths up to 40 A/m • Used with MFO 6501/6502 for IEC 61000-4-8 testing • When doing testing, EUT is to be placed in the center of the loop • Field strength can be monitored by a magnetic field meter

  18. Installation • Connect MFO 6501 to INA 702 loop • Insure that “POWER “ plug is fitted • Connect MFO 6501 to mains. • Connect external Ampmeter • Switch ON mains power . • Adjust the required current through the loop using hand-wheel.

  19. 一般環路天線上皆會記錄CF值供使用者用 Test level adjustment H = CF x I = 環路天線之修正因素 x 流經天線之電流 = 磁場強度(H)

  20. IEC61000-4-9 Pulse magnetic field immunity 脈沖磁場抗擾性試驗

  21. IEC61000-4-9試驗等級及選擇

  22. 試驗產生器 • 上升時間為 6.4us±30% • 持續時間為16us±30% • 輸出電流範圍:100 to 1000A • 極性: 正及負極性 • 與電源頻率之相位關係:在0° ~360°的範圍內每10°可同步 • 同步:由外部信號觸發 • 產生器可使用複合式沖擊產生器(波形1.2/50~6.4/16us)

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