Posts Tagged ‘power cables’

Factors that determine the current rating of power cables

October 20th, 2015 | 1 Comment | Posted in Power quality
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journal1Cables provide a pathway for electricity from the source to the end user, usually equipment or a tool.

Given the varied power requirements, it is crucial that the engineer selects the most appropriate type. This requires an innate knowledge of the factors that determine the current rating (ampacity).

The following highlights the primary considerations.

Testing online partial discharge in power cables – 9 important guidelines

June 1st, 2015 | Make a comment | Posted in Electrical distribution
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Hi folks! Check the 9 guidelines we received last week from one of the members of the Electrical Engineering Community.

Then feel free to post a comment to say if you agree or not.

Testing online partial discharge in power cables
Testing power cables for online power discharge (PD) has become an important aspect in the testing of power cables in the recent past.

Electric utilities are bound to perform PD tests order to ensure safe and efficient operation of the power cables.

Online PD test is normally performed using some of the following sensors:

  • Current transformer with high frequency (HFCT)
  • Transient earth voltage sensor (TEV)
  • Coupling capacitor with high voltage
  • Acoustic sensors, etc.


Power Cables

August 27th, 2013 | 1 Comment | Posted in Electrical distribution
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What is a Power Cable

Power cables are widely used in the electrical distribution system. A power cable is essentially a current carrying conductor which is enclosed within an insulation system and protective coverings and other special features as desired.

The conductors inside are stranded and the cable is flexible to be wound or bent as per requirements.


Power cables are used for a wide range of applications in the electrical distribution system such as:

  • Connection between Transformer and switchgear
  • Connection between Switchgear and individual load
  • Connection between Generator and transformer
  • Underground cables for utility distribution network in Urban areas
  • Submarine cables for transmission purpose
  • Cables in Ships, Wind mills, Buildings


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