Articles, Case Studies, Events & Updates from Rishabh.
Overview When a conductor is raised to a potential above that of earth, some current is bound to flow from that conductor to earth. This is true even if the conductors are well insulated from earth. The amount of current that flows depends on the voltage on the conductor, capacitive reactance from between conductor & …
Continue reading “Leakage current protection in sensitive environments using Rish ELR”
Overview Nowadays, almost every industry undergoes issues related to harmonics due to the increase in usage of non-linear loads. As these loads are unavoidable because they perform important tasks like controlling or conversion, solutions to mitigate the ill effects of harmonics are to be devised. These solutions include passive filters consisting of detuned inductors and …
Overview Plant turnarounds or shutdowns, are one of the critical times in the operation of a plant. Shutdowns have an intense impact on the plant’s financial future either in positive or negative ways. Major plant shutdowns occur due to faults occurring in a system if preventive measures are not taken at the right time, whereas …
Overview The programmable logic controllers (PLC) are omnipresent in today’s manufacturing and process industries. To achieve control operations initially, mechanical relays were used. The wiring and logic involved in utilizing mechanical relays was cumbersome, replacing them by PLC offers a simple and easy solution for modifying the operation of a control system. The majority of …
Continue reading “Troubleshooting PLCs using AC-DC Leakage Clamp Meter”
Overview Contact Resistance Measuring (CRM) device measures the resistance of electrical contacts of circuit breaker, isolators & busbar. It measures the resistance at the micro- or milli-ohm level and is used primarily to verify that electrical connections are proper. It helps to detect loose connections, eroded contact surfaces, contaminated or corroded contacts. It is important …
Continue reading “DC Shunt used as a calibrating shunt for CRM devices”
Overview Induction motors are widely used in industries due to their robust construction and operation. The speed of an induction motor is not required to be the same always and this depends on the requirement of the process, unnecessary operation of an induction motor at full speeds demands more energy and hence speed control is …
Continue reading “Understanding cause of VFD failures using Power Quality Analyzer – Rish PQA”
