Energy and Power
5 Key Elements of Your Electricity Bill
Electricity is a powerful form of energy that is essential to the operation of virtually every facility in the world. It is also an expensive form of energy that can represent… Read more
Aug 29, 2014 | By Edvard
Energy and Power
Maintenance Management Of Electrical Equipment (Condition Monitoring Based) – 2
Continued from the first part of this technical article… Read it here. The concept of “Predictive Maintenance Management (PDM)” is not new. PDM program is the maintenance program drawn out… Read more
Aug 27, 2014 | By Ashok Parikh
Energy and Power
Maintenance Management Of Electrical Equipment (Condition Monitoring Based)
In today’s competitive market scenario, all types of industries are under tremendous pressure to cut down their maintenance costs, as they form a significant portion of the operation costs. The… Read more
Aug 25, 2014 | By Ashok Parikh
Energy and Power
10 most common power disturbances that make our life difficult
As you know, deviation from sinusoidal form at the nominal voltage level is actually a power quality issue or power disturbance, defined as “any deviation from the nominal value (or… Read more
Aug 22, 2014 | By Edvard
Electrical Lectures
The choice of system voltage according to ANSI standard C84.1
The selection of system voltages is crucial to successful power system design. Reference lists the standard voltages for the United States and their ranges. The nominal voltages are given in Table… Read more
Aug 20, 2014 | By Edvard
Energy and Power
5 most common critical power distribution topologies
In many of today’s mission-critical applications, ever-increasing reliability requirements are the norm. A critical part of this reliability is the reliability of the electric power distribution system for a given… Read more
Aug 15, 2014 | By Edvard
Energy and Power
Methods Of Securing LV Circuit Breakers
Circuit breakers are typically secured in place by one of the following methods: Through bolts Bolted to the bus Stab locked to the bus or some type of receptacle connection… Read more
Aug 11, 2014 | By Edvard
Energy and Power
Methods Of Mounting LV Circuit Breakers
Methods used to mount circuit breakers can be divided into three general groups, those being: Fixed Removable (disconnectable unit), and Drawout (withdrawable) A review of these mounting methods follows. A… Read more
Aug 08, 2014 | By Edvard
Energy and Power
7 most known high voltage insulation methods you should know
Before getting to the specifics of each material, there are a couple of issues that apply to all materials. First, it is important that the insulating material is homogeneous. This… Read more
Aug 04, 2014 | By Edvard
Energy and Power
How to get rid off the harmonics in electrical system?
The subject of harmonics is also a contributory factor in electrical noise I already wrote few days ago (Cable spacing as a means of noise mitigation). It also causes several other… Read more
Jul 16, 2014 | By Edvard
Cables
Cable spacing as a means of noise mitigation
In situations where there are a large number of cables varying in voltage and current levels, the IEEE 518-1982 standard has developed a useful set of tables indicating separation distances… Read more
Jul 11, 2014 | By Edvard
Energy and Power
Harmonic distortion and high frequency applications
The presence of harmonic frequencies in addition to the fundamental 50Hz, bring about distortion of the fundamental sine wave. Considerable problems may arise dependant upon the level of this distortion…. Read more
Jul 07, 2014 | By Edvard
Energy and Power
How the Weather Affects Conductors
Notice how a conductor is strung between poles. It is not pulled tight; it sags. In hot weather it sags even more than in cold weather. Consider the analogy of… Read more
Jul 04, 2014 | By Edvard
Cables
An example how to calculate voltage drop and size of electrical cable
Electrical load of 80KW, distance between source and load is 200 meters, system voltage 415V three phase, power factor is 0.8, permissible voltage drop is 5%, demand factor is 1…. Read more
Jun 30, 2014 | By jiguparmar
Electrical Lectures
2 Most Common Contributing Factors In Motor Insulation Failure
The most frequent failure in electrical equipment is the degradation and breakdown (flashover) of the insulation. Electrical insulation can be liquid or solid, organic or inorganic. Organic insulation material consists… Read more
Jun 25, 2014 | By Edvard
