Page 106 - Practical Power System and Protective Relays Commissioning
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104  Practical Power System and Protective Relays Commissioning
































            FIGURE 9.2 Zinc oxide surge arrester.






            9.2 TESTING OF SURGE ARRESTERS
            Leakage current measurements are shown in Fig. 9.3. I t (Amp) is calculated
            by:
               I t 5 I c 1 I r



















            FIGURE 9.3 Leakage current measurements.
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