DoElect

Insulation Resistance of Equipment's Electrical equipment/material has an insulation resistance property that needs to be monitored on a scheduled basis to avoid sudden breakdown of such equipment. A regular testing of electrical equipment insulation is strongly recommended to prevent electrical shock hazard to personnel, damage to equipment itself and other plant devices. When you buy a new electric motor or transformer etc the nature of the copper coil used in winding this equipment is still new because the copper winding has not been subjected to operating condition (except during factory acceptance testing) as operation condition will subject the winding to heat and insulation deterioration.  In fact, this is the same for electrical cable, a new cable (made of conductor and insulator). The conductor has a very good isolation/insulation to the insulator(PVC insulation) of its body but when the cable is subject to usage and as current follows through the cable increases, the cond...

 Most loads in modern electrical distribution network are inductive and resistive loads.  Resistive loads are loads that convert all form of energy to heat and they always have heating element incorporated in there design. Examples include: Incandescent bulb, heater, cooker etc. Resistive Load: Resistive loads require one type of current - - Working power (kW) which is used to perform the actual work of creating heat, light etc Inductive Load: Inductive loads are loads that operate base on the principle of electromagnetic induction. They always have coils in them.  Example includes: Transformers, electric motor, fan etc. When a current is supplied to an inductive load. It converts this current to magnetic using the coil inside it. Because it is an inductive load, current lags voltage by an angle of 90 degree. Inductive load requires two kinds of current: - Working power (kW) to perform useful and actual work of creating heat, motion, machine output etc - Reactive power (k...