Abstract
A relay safety device on prepaid Kwh meters as a power limiting protection system to avoid damage to relays on prepaid Kwh meters caused by power consumption that is greater than the registered power. In the device that will be designed, the code safety method cuts the electric current automatically if the power used is greater than the registered power so that this method can reduce damage to the kwh relay for customers. Test results for tools designed with calculation results have different calculation percentages. For irons, the error percentage of the calculation results is 1.99%, while for testing water heaters, the error percentage is 0.53% due to the lack of sensitivity of the PZEM-004T sensor in reading the used load. The measured voltage at the output of the designed tool reaches 205 V. Measuring test of the designed tool Based on SNSU PK.P-02:2020 - National Standardization Agency The error tolerance in measuring digital measuring tools is - 5%, if it exceeds the predetermined regulations then the results cannot be used or are referred to inappropriately.
Published Version
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