Moisture Content by Karl Fischer Titration: (D1533)

The method determinations of water present in insulating liquids, in concentrations most commonly below 200 ppm.by coulometric titration. Basically this automatic coulometric titration procedure requires the use of an instrument that is designed and calibrated to deliver a known electrical current which generates sufficient iodine to neutralize a known weight of water per minute. Low water content of insulating oil is necessary to achieve adequate electrical strength and low dielectric loss characteristics. This low moisture maximizes the insulation system life and minimizes metal corrosion. Dissolved water cannot be detected visually and must be determined by other means such as Karl Fischer Titration. This test shows the presence of water that may not be evident from electrical tests.

We current support both TOA 3.3c and TOA4 Online version, which is an Internet web-based software. Both versions interpret dissolved gas and insulating fluid test data for power transformers and other liquid-filled electrical apparatus such as load tap changers, regulators and oil circuit breakers.It provides a variety of reports and graphs to support basic testing, condition assessment and maintenance tasks. Automatic dissolved gas analysis and fluid quality analysis employ up-to-date methods which have been mathematically enhanced to account for measurement "noise" often found in DGA data. Trends and rate of changes are also provided for in this analysis. TOA$ reports may be accessed on the internet once a client account has been set up and information stored to this on-line storage file.