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Monday, July 19, 2010

How to prepare a Substation Daily logsheet

This is to differentiate the logbook to a logsheet. Normally, the logbook entries consist of phrases and sentences which describe the activities that happen in a substation.
A logsheet is a form where hourly readings of paramaters of substation equipment in a substation. These data can be obtained through meters, gauges, transducers and monitors. Example of frequently monitored data are the system voltages, currents, power, energy, frequency, oil level, gas pressures and others.
One thing to take note while gathering the parameters are the upper and lower limits of these different parameters. The upper limit is the maximum tolerable value of a given desired data for efficient operation of substation equipment. The lower limit is the minimum tolerable value of a given desired data for efficient operation of substation equipment. So, the desired data must operate within this limits. If the value exceeds or fall short the limiting values, then necessary corrections must be made. Then the substation engineer or operator will affix his signature at the end of every shift. Other information may be present in a logsheet like the weather condition, maximum and minimum values, status of equipment and others.

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