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Solid-State ac Power Sources for Transformer Testing
, and load-loss step-up transformers. They can also supply auxiliary power for accessories such as load tap changers (LTCs) or fans that let them test a gamut of power transformers in a multitude of kilovolt-ampere ranges and frequencies. This built-in. Solid-State ac Power Sources for Transformer
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FDA, Industry Redouble Efforts To Foil Drug Counterfeiters
, counterfeit packages were found to contain no active ingredient. In the recent Procrit case, containers held untreated tap water. FDA has prosecuted counterfeiters vigorously, imposing stiff fines and jail sentences. FDA plans to develop strategies for decreasing the risk of counterfeit drugs entering
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Power Plant Thermography-Wide Range of Applications
A Midwest nuclear power plant utilizes 345 kV oil circuit breakers (OCBs) rated at 2,000 amps with an interrupting capacity of 63,000 amps. OCBs are independent-pole, pneumatically operated breakers: air to close; spring to open. A hot spot was identified on the test tap cover of the A phase
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Balun Measurements
A Balun, as shown in Fig. 1, is a two-winding transformer designed to convert a single ended (i.e. one side grounded) signal to one balanced with respect to ground. The balanced winding may or may not be center-tapped. A center-tap would, ideally, be. at a virtual ground and may be grounded
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Balun Measurements
A Balun, as shown in Fig. 1, is a two-winding transformer designed to convert a single ended (i.e. one side grounded) signal to one balanced with respect to ground. The balanced winding may or may not be center-tapped. A center-tap would, ideally, be. at a virtual ground and may be grounded
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Non-Intrusive Engine Speed Sensor (.pdf)
In the field of vehicle diagnostics accurate instantaneous engine speed information enables the detection and diagnosis of many engine problems, even subtle ones. Currently, there is a limited choice in the ways of obtaining such information. For example, it is known that one can tap into the crank
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Application: Water Flow Volume Measurement Sensor (.pdf)
There are a multitude of applications that require the measurement of the volume of water. Water filters must measure the amount of water passing through them in order to know when to change the filter. In many cases these filters may be directly connected to the tap water in the home. Also many
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"Power Plant" Takes On A New Meaning
. The burning of 1 m of natural gas makes about 2-kg CO2 or 10% by volume, for example. A controlled amount of flue gas can be vented to a greenhouse, while waste heat from electricity generation provides heating. Greenhouses would colocate with power plants to reduce thermal and piping losses as well as tap