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Electrical General Services Substation

Electrical General Services Substation is a distribution substation from which electric supply is distributed to the different users. In a substation there are numbers of incoming and outgoing circuits each having its isolator, circuit breaker, transformers etc. connected to busbar system. These equipment are mostly static type.

Handbook on maintenance of electrical general services substation
Handbook on maintenance of electrical general services substation (photo credit: satcon.in)

Safety and protection of equipment as well as working personnel is also a considerable factor. Lightening arresters, earthing of equipment and fencing is done for this purpose.

Maintenance of a substation is essential to ensure un-interrupted electric supply to the using points which involves vigilance, care and well-defined scheme of procedures. Such scheme indicates the authority and responsibility of persons at various levels.

It consists of many of periodic schedule maintenance, regular inspections, testing and rectification of defects.

Single Line Diagram of 33/11 kV/440 V Substation
Figure 1 – Single Line Diagram of 33/11 kV/440 V Substation

Upkeepment of records of each inspection is essential. If any replacement is carried out or adjustment of certain setting is done then these must be entered in a logbook. A rigid system of maintenance of each equipment will ensures long life, trouble free service and reduction in unnecessary interruptions.

All work on major electrical installations must be carried out under permit to work system.

The “permit to work” is to be issued through permit card only by an authorized person. As the name suggests it authorizes the maintenance supervisor and his team to carry out work. Furthermore, this card will indicate unambiguously the points at which it is safe to work, the time interval when it is to be done, steps to be taken to ensure safety such as earthing, display of danger notices etc. at the nearest live point. It should have the signature of the authorized person.

After the work is completed the permit card should be cancelled and it should be taken back. Danger notices should be put up or removed by the responsible supervisor who will take the charge of keys equipment, rooms, etc.

Title:Handbook on maintenance of electrical general services substation  – GOVERNMENT OF INDIA
Format:PDF
Size:1.9 MB
Pages:62
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Handbook on maintenance of electrical general services substation – GOVERNMENT OF INDIA
Handbook on maintenance of electrical general services substation – GOVERNMENT OF INDIA

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9 Comments


  1. Mussa
    Jan 18, 2020

    nice work


  2. Antonio Augusto de Meira Cortellazzi
    Jan 17, 2020

    Estou, com grande prazer, atualizando meus conhecimentos de engenharia elétrica.
    Graduei-me em 1955 e tenho atualmente quase 90 anos. Como engenheiro trabalhei uns quinze anos. Depois ascendemos a cargos de gerenciamento. Por último gerenciei a construção de uma plataforma de explotação de petróleo.
    Com a EEP, voltei aos bancos universitários. Tem sido muito gratificante. Obrigado.


    • Edvard
      Jan 17, 2020

      Nice to meet you Antonio and I’m glad you find EEP’s articles usefull.


    • Antonio Augusto de Meira Cortellazzi
      Jan 17, 2020

      I am, with great pleasure, updating my knowledge of electrical engineering.
      I graduated in 1955 and am now almost 90 years old. As an engineer I worked about fifteen years. Then we rose to management positions. Finally I managed the construction of an oil drilling platform.
      With EEP, I returned to the university banks. It has been very rewarding. Thanks.


      • Edvard
        Jan 17, 2020

        You’re really impressed me with your interest in electrical engineering in your age, that’s how I imagine my retirement age someday.


  3. Juan Negrón
    Jan 17, 2020

    Very good information. Thank you!


  4. DUSABIMANA
    Aug 29, 2019

    I again get more info as an electrician


  5. DUSABIMANA
    Aug 29, 2019

    GOOD


  6. Edward lavaly
    Aug 28, 2019

    Very educating

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