When to Buy Premium Efficiency Motors?

Using premium efficiency motors can reduce your operating costs in several ways. Not only does saving energy reduce your monthly electrical bill, it can postpone or eliminate the need to expand the electrical… Read more

Dec 31, 2014 | Edvard

Hey engineers, wish you all the best in 2015!

Well, it’s been a long year with a lot of published technical articles and gained knowledge in the field of electrical engineering. EEP’s team payed special attention to the technical… Read more

Dec 29, 2014 | Edvard

Test On 110kV Power Cable After Installation (2)

In previous part of this technical article first three procedures were explained. Now the rest will be explained in details: Phase indication test (previous part) DC conductor resistance measurement (previous… Read more

Dec 26, 2014 | Zafar Iqbal

Factors affecting transient stability – Faults analysis

A power system may be said to have transient stability if the various generating stations will regain equilibrium following a periodic system disturbances. System disturbances which cause the greatest trouble are those… Read more

Dec 24, 2014 | Edvard

Test On 110kV Power Cable After Installation (1)

Site test procedure covers all necessary electrical testing for the 110 kV cable and accessories to be carried out during and after installation of the cable system. This procedure is… Read more

Dec 22, 2014 | Zafar Iqbal

Lightning and surge protection of multi-megawatt wind turbines

There is an unabated trend for the utilisation of regenerative energy gained from wind turbines, solar, photovoltaic and biogas plants or geothermal heat. This is an enormous market potential not only for the… Read more

Dec 19, 2014 | Edvard

8 NEC Basic Feeder Circuit Sizing Requirements

Once the branch circuit loads are calculated, the feeder circuit loads may be calculated by applying demand factors to the branch circuit loads. General Lighting Loads (Article 220.42) Show window… Read more

Dec 17, 2014 | Edvard

Transformer routine test – Partial discharge measurement

This routine test aims to measure the partial discharges which may occur in the transformer insulation structure during test. Partial-discharges are electrical arks which form the surges between electrodes of… Read more

Dec 15, 2014 | Edvard

Danger And Control Of Static Electricity Buildup

It is necessary to study the static buildup potential of any workplace and institute protective measures to control such buildup. The following are the dangers posed by static electricity: Ignition… Read more

Dec 12, 2014 | Edvard

PLC Implementation Of Forward/Reverse Motor Circuit With Interlocking

Figure 1 illustrates a hardwired forward/reverse motor circuit with electrical and push button interlockings. Figure 2 shows the simplified wiring diagram for this motor. The PLC implementation of this circuit… Read more

Dec 10, 2014 | Edvard

Characteristics And Work Principles of Switched Reluctance (SR) Motor

The Switched Reluctance (SR) motor is very different from the other polyphase machines described because both the stator and the rotor have salient poles. The motor can only be used… Read more

Dec 08, 2014 | Edvard

Clean vs dirty ground – Bonding of isolated, common & integrated grounding systems

In this article we covered in detail the physics related to lightning phenomenon and how the surges due to lightning strokes are safely conducted to ground using a lightning protection… Read more

Dec 05, 2014 | Edvard

Providing capacitive reactive compensation with shunt capacitor banks

Shunt capacitor banks are mainly installed to provide capacitive reactive compensation – power factor correction. The use of SCBs has increased because they are relatively inexpensive, easy and quick to… Read more

Dec 03, 2014 | Edvard

Electrical life (durability) of LV circuit breakers due to the switching operations

According to the standard IEC 947-2, there is actually no defined stipulation regarding the requirements of electrical life of a circuit breaker. The numbers of switching operations which a circuit… Read more

Dec 01, 2014 | Edvard