Laserfiche WebLink
2-point method in accordance with Section 9.03 of IEEE 81, "Guide for Meas g Earth <br /> Resistivity,Ground Impedance and Earth Surface Potentials of a Graunding System." <br /> a. Ground/resistance maximum values shall be as follows: <br /> 1. Equipment rated 500 kVA aad less: 10 ohms. <br /> 2. Equipment rated 500 kVA to 1000 kVA: S ohms. <br /> 3. Equipment rated more than 1000 kVA: 3 ohms. <br /> 4. Unfenced substations and pad-mounted equipment: 5 ohms. <br /> 5. Manhole grounds: 10 ohms. <br /> b. Deficiencies: Where ground resistances exceed specified values,and if direc modify <br /> the grounding system to reduce resistance values. Where measures are d' d that <br /> exceed those indicated the provisions of the Contract,covering changes will app y. <br /> c. Report: Prepare test reports, certified by the testing organization, of th ground <br /> resistance at each test location. Include observations of weather and other ph nomena <br /> that may affect test results. Describe measures taken to improve test results. <br /> END OF SECTION <br /> CNS/[JS-WEST COMMLTNICATIONS GRO ING <br /> SMMA NO.96419.16 16452-5 17 EC.% <br />