Reactive power & power factor measurement in industrial plant

A varmeter is used to measure the reactive power in an industrial plant that is supplied by an 8300-V, three-phase, four-wire line. The plant load is estimated to be 300... Read more
By EEE, ADBU

20 Simple Questions to Check Your Overcurrent Protection Knowledge

As you already know, reliable overcurrent protective devices, such as fuses and circuit breakers, prevent or minimize costly damage to transformers, conductors, motors, equipment, and the other many components and... Read more
By EEE, ADBU

3 greatest enemies to the transformer operation (and how to prevent them)

The principal object of transformer maintenance is to maintain the insulation in good condition. Moisture, dust and excessive heat are the main reasons of insulation deterioration and avoidance of these... Read more
By EEE, ADBU

Unbalance protection of grounded & ungrounded wye shunt capacitor banks

The protection of shunt capacitor banks against internal faults involves several protective devices in a coordinated scheme. Typically, the protective elements found in a shunt capacitor banks (SCB) for internal... Read more
By EEE, ADBU

Three proven ways to reduce electrical energy losses in buildings

As savings in terms of costs are the main concern for the operators, the first approach is to try to reduce electrical energy losses in buildings. Also, the electricity supply... Read more
By EEE, ADBU

11-step procedure for a successful electrical circuit design (LV project example)

Let’s take an example of electrical circuit design. A consumer lives in a bungalow with a detached garage and workshop, as shown in Figure 1. The building method is traditional... Read more
By EEE, ADBU

Practical solutions for preventing or damping ferroresonance in electrical installations

Ferroresonance is a non-linear resonance phenomenon that can affect power networks. The abnormal rates of harmonics and transient or steady state overvoltages and overcurrents that it causes are often dangerous for electrical... Read more
By EEE, ADBU

Easy understanding of 3-phase transformer connections (Delta–Delta, Wye–Wye, Delta–Wye and Wye–Delta)

Three-phase voltage transformations can be accomplished by using three-phase transformers, which are single devices with all windings constructed on a single iron core. Three-phase voltage transformations also can be accomplished by using... Read more
By EEE, ADBU

How do faults develop in a HV transformer and why condition monitoring is important

Condition monitoring equipment that can be used to extend the life of a transformer or to prevent catastrophic failure could pay for itself many times over. However, condition monitoring does not come... Read more
By EEE, ADBU

The basics of capacitor banks protection

As you already know, capacitor banks are normally used in medium voltage networks to generate reactive power to industries etc. Capacitor banks are, almost always, equipped with a series reactors to limit... Read more
By EEE, ADBU