- Complete DGA monitoring solution for transformers with On-Line Tap Changers (OLTC). All the features of TRANSFIX available for the transformer main tank and for the OLTC selector and diverter tanks.
The TAPTRANS is an 9-gas on-line transformer DGA monitoring unit designed to monitor the transformer and OLTC (On-Load Tap-Changer). The TAPTRANS can individually measure the Main, Selector and Diverter tanks in one unit. The photo-acoustic detection system used by the TAPTRANS allows measurement of high and low gas levels without the need for extensive re calibration/cleaning.
The TAPTRANS measures all significant fault gases (in ppm) as outlined by international standards as well as moisture in oil (%RH & ppm). The measurement of these gases allows the user to detect and diagnose a complete range of transformer and tap-changer faults (including overheating and over tapping).
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Technical Bulletin #18 has long been available to provide guidance to customers for setting DGA alarms on their multigas online monitors. GE regularly revise this bulletin and have just released version 5. In this release, some of the thresholds have been adjusted following the recent update of the IEEE C57.104 standard, which now gives different gas levels depending on the age and breathing type of the transformer being monitored.
More information and the Technical Bulletin #18 are available for download here:
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