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Archive: Category «Energy and Power»

Cables

Partial Discharge Testing On Power Cable Systems

Partial discharge measurement is an important method of assessing the quality of the insulation of power cable systems, particularly for extruded insulation materials. This article considers partial discharge from two… Read more

Nov 18, 2011 | By Edvard

On-Line Partial Discharge Testing 27.6 kV XLPE Cable
Energy and Power

Moving Iron Instruments – Voltmeter and Ammeter

Moving-iron instruments are generally used to measure alternating voltages and currents. In moving-iron instruments the movable system consists of one or more pieces of specially-shaped soft iron, which are so… Read more

Nov 13, 2011 | By Bipul Raman

Analog ammeter and voltmeter designed to measure a.c. current and a.c. voltage
Energy and Power

Medium voltage circuit breaker operating sequence

Rated switching sequence according to IEC, O – t – CO – t’ – CO. (cf. opposite diagram): O – Represents opening operation CO – Represents closing operation followed immediately… Read more

Nov 10, 2011 | By Edvard

Automatic reclosing cycle of medium voltage circuit breaker
Energy and Power

The Importance of the Correct PPE

Whilst awareness of the dangers of arc flash has continued to increase over the last few years, the number of incidents that are still occurring on a daily basis are… Read more

Oct 29, 2011 | By cgoulds

Electrical safety
Energy and Power

What is the Eddy Current?

Cant see this video? Click here to watch it on Youtube. Eddy currents are currents induced in conductors to oppose the change in flux that generated them. It is caused… Read more

Oct 13, 2011 | By Edvard

Energy and Power

Neutral system – Single earthed or Multi earthed?

In distribution system three phase load is unbalance and non linear so the neutral plays an very important role in distribution system. Generally, distribution networks are operated in an unbalanced… Read more

Oct 13, 2011 | By jiguparmar

Three-phase four wire single neutral grounded
Energy and Power

Insulating materials in electrical equipment

The reason for using insulating materials is to separate electrically the conducting parts of equipment from each other and from earthed components. Earthed components may include the mechanical casing or… Read more

Oct 05, 2011 | By Edvard

Press paper /pressboard for Electrical purposes
Energy and Power

Supercapacitor – The future of energy storage

Supercapacitors have been around since 1966 but were never considered as a serious alternative for batteries. Ironically, we could have the said the same for AM radio before Armstrong developed… Read more

Oct 05, 2011 | By Olan

Supercapacitor storage


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