Electric Motors need maintenance regularly in order to avoid failure and prolong their lifespan. Generally, motors and motor parts should … Read moreElectric Motor Maintenance : Preventive, Predictive and Reactive Maintenance
The interesting thing about the parallel operation of the DC series generator is that DC series generators are not usually … Read moreParallel Operation of DC Series Generator
To understand the concept of armature reaction in DC generator, please go through the previous articles describing the construction of … Read moreArmature Reaction in DC Generator
An electrical power transformer has to go through a number of transformer testing procedures for confirming its specifications and performances. … Read morePower Transformer Testing Methods – Type, Routine & Special Tests
Discover exactly why transformers are rated in kVA rather than kW. Learn how core and copper losses dictate a transformer’s thermal limit, explore the mathematical proof behind changing load power factors, and master this classic electrical engineering interview question.
In a compound generator, both series and shunt excitation are combined as shown in the figure. The characteristics of DC … Read moreCharacteristics of DC Compound Generator
Insulation Resistance or IR Test is carried out by maintenance engineers to ensure the healthiness of the overall insulation system … Read moreInsulation Resistance Test (IR Test) or Megger Test
The phase windings of three-phase transformers are interconnected to give a three-phase, three-or four-wire supply through three different modes of … Read moreThree Phase Transformer Interconnections
The effects of voltage and frequency variation on the transformer is discussed in this article. Usually, power transformers are not … Read moreEffects of Voltage and Frequency Variation on Transformers