MEGGER AVO BGFT
蓄電池故障定位儀
一、產(chǎn)品簡介
蓄電池故障尋蹤(定位)儀是一款經(jīng)濟(jì)型手動(dòng)調(diào)節(jié)的儀器,可以在線對(duì)接地故障進(jìn)行鑒別、尋蹤和定位。能夠抗強(qiáng)電磁場(chǎng)的干擾。故障尋蹤可以快速確定故障位置,避免反復(fù)試驗(yàn)不能確定故障位置,而需要停電檢測(cè)。正是具有這樣的優(yōu)點(diǎn),才得到廣泛的應(yīng)用。
二、產(chǎn)品應(yīng)用
蓄電池接地故障尋蹤儀由便攜式在線信號(hào)發(fā)生器和接收裝置組成,能確定接地故障的數(shù)量和嚴(yán)重程度。儀器由故障點(diǎn)阻抗和系統(tǒng)電容組成一個(gè)橋式測(cè)量電路。信號(hào)發(fā)生器能夠用來確定接地故障的數(shù)量和嚴(yán)重程度。在直流電流和交流脈沖達(dá)到15A時(shí),能排除因電磁干擾而產(chǎn)生的錯(cuò)誤讀數(shù),在使用手提式接收器和夾鉗式傳感器尋蹤時(shí),接收器屏幕顯示信號(hào)的幅值,采用多路開關(guān)調(diào)節(jié)靈敏度,已達(dá)到顯示效果。
三、測(cè)量原理
蓄電池故障尋蹤(定位)儀發(fā)射一個(gè)交流信號(hào)到帶電或不帶電回路中,信號(hào)在電纜故障點(diǎn)的阻抗上產(chǎn)生一個(gè)反極性波,通過測(cè)量這個(gè)波的幅值,可以確定故障點(diǎn)的位置。在故障點(diǎn)阻抗小于100 kΩ時(shí)使用單個(gè)夾鉗式傳感器,能夠靈敏的在接收器上顯示信號(hào)強(qiáng)度,而準(zhǔn)確的定位。
四、產(chǎn)品特點(diǎn)
五、技術(shù)參數(shù)
電源
發(fā)射器 240 Vac, 50 Hz
接收器 9伏電池供電,連續(xù)使用40小時(shí)
輸出電壓 0- 50 V rms
輸出電流 根據(jù)負(fù)荷情況 0 to 2 A rms
輸出頻率 20 Hz, ±2%
故障阻抗 50 V電壓下 1 - 399 kW bridge accuracy ±10%
線路電容 0.01- 11.1 µF; bridge accuracy ±20%
顯 示
發(fā)射器 電壓、電流三位半數(shù)字顯示 精度 ±5%
接收器 三位半數(shù)字顯示
使用溫度 0-40° C
重量 發(fā)射器 15.9 kg 接收器 0.3 kg
Battery Ground Fault Tracer
Battery Test Equipment
- Ground faults in ungrounded dc battery systems easily located
- Operates in high electrical noise environment
- Simplifies fault tracing by identifying fault characteristic (resistive and capacitive) magnitudes
The Battery Ground-Fault Tracer is an economical, manually-balanced instrument that identifies, tracks and locates ground faults in ungrounded dc battery systems - on-line. It is particularly effective in a high electrical noise environments, as the strength of the test current can be adjusted.
The Battery Ground-Fault Tracer accelerates fault location by eliminating trial-and-error procedures and because faults can be located without going off-line. It is particularly useful in any industry where supply of power for operating measurement, communication and control equipment is critical.
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