便攜式電容表CB-2000

ABB新開發(fā)的電容表CB-2000具有設(shè)計緊湊、重量輕的特點，便于在進行測量時攜帶。無需電源連接。收集的測量值可以很容易地傳輸?shù)?PC 進行存儲和分析。從 PC 中存儲的值可以很容易地傳輸?shù)絻x表，以便在進行新測量時可用。

測量電容是電容器組定期維護的重要組成部分。使用 CB-2000，即使是大型電容器組也可以快速輕松地測量，因為電容器組內(nèi)不需要內(nèi)部斷開。

CB-2000 使用簡單，使用隨附的肩帶便于攜帶。測量值清晰地顯示在 LCD 顯示屏上，無論在白天還是在黑暗的環(huán)境中均可讀取。

測量原理

測試信號由安裝的可充電電池組或電源適配器產(chǎn)生，并通過兩個電壓夾連接到測量對象。測試電壓為 1.1–1.4 V。測試電流使用夾式變壓器測量，該變壓器可輕松放置在電容器套管周圍。對于每次測量，都會記錄電容值、時間和溫度。儀表可以處理來自每個測量對象的五次測量的數(shù)據(jù)。

PC 上的分析 CB-2000 配備了一個程序，該程序可以通過 USB 電纜與 PC 進行數(shù)據(jù)傳輸。

在測量之前，CB-2000 可以通過從先前進行的測量中上傳數(shù)據(jù)來準(zhǔn)備。測量完成后，測量值可以在 PC 上存儲和分析。測量數(shù)據(jù)保存為制表符分隔的文本，可以在 Excel 或類似的電子表格程序中打開。

Measuring capacitance is an important part of the regular  maintenance of capacitor banks. With the CB-2000, even  large capacitor banks can be measured quickly and easily  because no internal disconnections are necessary within the  capacitor bank. The CB-2000 is simple to use and easy to carry using the  supplied shoulder strap. The measured values are clearly presented on the LCD display, which can be read both in daylight  and in dark environments. Measurement principle The test signal is generated from the installed rechargeable battery pack or power adapter and connected to the  measurement object with two voltage clips. The test voltage  is 1.1–1.4 V. The test current is measured using a clip-on  transformer that is easily positioned around the capacitor’s  bushing. For each measurement, the capacitance value, time  and temperature are registered. The meter can handle data  from five measurements per measurement object. Analysis on PC The CB-2000 is supplied with a program that enables the  transfer of data to and from a PC via a USB cable. Prior to measurement, the CB-2000 can be prepared by uploading data from a previously conducted measurement. After  the measurements are made, the measurement values can  be stored and analyzed on a PC. Measurement data is saved  as tab-delimited text, which can be opened in Excel or similar  spreadsheet programs.

Measurement data 

Measuring range 0 – 1000 µF 

Measurement accuracy ± 1.0% 

Maximum load 2000 µF 

Test voltage 1.1 – 1.4 VAC pk – pk, 40 – 160 Hz 

Weight (CB-2000) 2.4 kg 

Operating time More than 8 hours