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ieee std 81 1983 pdf download
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IEEE Std 81TM-1983 [B36]a was prepared by the Power System Instrumentation and MeasurementCommittee of the IEEE Power and Energy Society. The guide was intended to cover the majority of fieldmeasurements that did not require special, high-precision equipment and did not address unusualdifficulties that can occur in large grounding systems, abnormally high stray alternating currents (ac) ordirect currents (dc), and so on. In 1991, IEEE Std 81 was reaffirmed and IEEE Std 81-1991 [B37] wasreleased to cover the measurement of very low impedances (less than 1 ohm) along with specializedinstrumentation, measurement techniques, and safety considerations.
After nearly two decades of inactivity, the Substation Committee of the IEEE Power and Energy Societydetermined that IEEE Std 81-1983 and IEEE Std 81-1991 contained subject matter that is very relevantfor applications in electric utility facilities, but the standards needed to be updated. A working group wasformed to combine both standards into a singular document that included updated instrumentation,techniques, and information. This document represents the efforts of that working group.
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