Unit 3: Distribution systems

on


Question 6

In Nigeria, what is the standard voltage and common system wiring for:

  1. Primary distribution
  2. Secondary distribution


Provide your response in the comment section using your surname and last two digit of your matriculation number as your identity (e.g. Abacus20)
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Comments

  1. AKIN-OJO 0325 September 2019 at 09:02

    The standard voltage and common system wiring in Nigeria is 230 V and the frequency is 50 Hz.
    Distributions
    1. Primary=220V
    2. Secondary=240V

    AKIN-OJO 03

    ReplyDelete
    Replies
    1. PapaT26 September 2019 at 09:18

      🙍

      Delete
    2. Aremu1626 September 2019 at 10:11

      Hmm...I kinda disagree with this! Nice try tho ����

      Delete
  2. Rasheed5525 September 2019 at 09:13

    Primary distribution system
    The most commonly used primary distribution voltages are 11 kV, 6.6 kV and 3.3 kV. Due to economic considerations, primary distribution is carried out by 3-phase, 3-wire system. Fig. 12.2 shows a typical primary distribution system.
    Primary distribution systems consist of feeders that deliver power from distribution substations to distribution transformers. A feeder usually begins with a feeder breaker at the distribution substation. Many feeders leave substation in a concrete ducts and are routed to a nearby pole.

    Secondary distribution systems
    A low-voltage network or secondary network is a part of electric power distribution which carries electric energy from distribution transformers to electricity meters of end customers.

    Secondary networks are operated at a low voltage level, which is typically equal to the mains voltage of electric appliances. Most modern secondary networks are operated at AC rated voltage of 100–120 or 230–240 volts, at the frequency of 50 or 60 hertz.

    Operating voltage, required number of phases (three-phase or single-phase) and required reliability dictate topology and configuration of the network.

    Electric power distribution systems are designed to serve their customers with reliable and high-quality power. The most common distribution system consists of simple radial circuits (feeders) that can be overhead, underground, or a combination

    ReplyDelete
  3. Olaniyi4525 September 2019 at 09:43

    240 volt 50hz
    Distribution 220/240
    Primary 220v
    Secondary 240v

    ReplyDelete
  4. Sunbare0225 September 2019 at 09:59

    The standard voltage is 240V and the standard frequency is 50 Hz

    Primary distribution voltages range from 4 kV to 35 kV phase-to-phase (2.4 kV to 20 kV phase-to-neutral)

    The secondary distribution employs 400/230 V, 3-phase, 4-wire system.

    Sunbare02

    ReplyDelete
  5. Olanipekun4425 September 2019 at 11:02

    The standard voltage is 240V and the standard frequency is 50 Hz

    Primary 220v
    Secondary 240v

    ReplyDelete
  6. Ogunleye4125 September 2019 at 11:16

    The standard voltage used in Nigeria is 230V and having a frequency is 50 Hz.

    1) The common system writing for primary distribution voltages in Nigeria are 11 kV, 6.6 kV and 3.3 kV.

    2) The common system writing for secondary distribution voltages is 400/230-V

    ReplyDelete
  7. Amoo1425 September 2019 at 11:23

    The standard voltage and common system wiring in Nigeria is 230 V and the frequency is 50 Hz.
    Common system of wiring for primary is carried out by 3-phase, 3-wire system Voltages distribution BTW 11kv and 3.3kv
    FOR SECONDARY operate at low voltage 230-240 volts
    And frequency of 60hertz

    ReplyDelete
  8. Bamiro2325 September 2019 at 11:49

    The standard voltage is 240V and the standard frequency is 50 Hz

    Primary distribution voltages range from 4 kV to 35 kV phase-to-phase (2.4 kV to 20 kV phase-to-neutral)

    The secondary distribution employs 400/230 V, 3-phase, 4-wire system.

    That is what Nigeria produce different from other countries..... Despite the fact that we have so many power plant

    ReplyDelete
    Replies
    1. Ezennia3024 November 2019 at 15:27

      Absolutely ���� Nice try

      Delete
  9. ODEFEMI1025 September 2019 at 12:33

    ODEFEMI10
    1. The standard voltage for Primary distribution is 3.3, 6.6 kV. 3phase-3wires system.
    2. The standard voltage for Secondary Distribution voltage is 415/230v (3phase-4wires system).

    ReplyDelete
  10. Dada2725 September 2019 at 12:39

    Standard voltage for Primary distribution is 220V and Secondary is 240V while the wiring is 230V

    ReplyDelete
  11. footballgist25 September 2019 at 12:45

    Oyeyemi54

    The standard voltage and common system wiring in Nigeria is 230 V and the frequency is 50 Hz.
    Distributions
    1. Primary=220V
    2. Secondary=240V

    ReplyDelete
  12. Badeniyi 0525 September 2019 at 12:46

    Primary distribution voltage:33kv and 11kv
    Primary wiring system: 3phase,3wire
    Secondary distribution voltage: 415v,380v_230v
    Secondary wiring.. 3phase 4 wire or single phase and neutral

    ReplyDelete
  13. Idowu0825 September 2019 at 13:54

    The standard voltage for
    Primary distribution : 33kv/11kv
    Secondary distribution : 0.415v

    Common system wiring for
    For primary distribution : 3 phase- 3 wire system
    For secondary distribution :
    3phase 4 wiring system

    ReplyDelete
  14. Gbadebo3225 September 2019 at 14:16

    The standard voltage and common system wiring in Nigeria is 230 V and the frequency is 50 Hz.
    Distributions
    1. Primary=220V
    2. Secondary=240V

    ReplyDelete
  15. tommy25 September 2019 at 17:09

    Bamigboye21
    Primary distribution system
    The most commonly used primary distribution voltages are 11 kV, 6.6 kV and 3.3 kV. Due to economic considerations, primary distribution is carried out by 3-phase, 3-wire system
    Most wiring in Nigeria is 230 V and the frequency is 50 Hz.
    Distributions
    1. Primary=220V
    2. Secondary=240V

    ReplyDelete
  16. Njokuocha3825 September 2019 at 17:39

    1. Primary Distribution
    Standard voltage: 11kV and 33kV
    Common system wiring:
    3 phase 3-wire

    2. Secondary Distribution
    Standard voltage: 330kV and 132kV
    Common system wiring:
    3 phase 4-wire

    ReplyDelete
  17. Olusanya Gbenga.4925 September 2019 at 23:44

    The standard voltage is 240V and the standard frequency is 50 Hz

    Primary 220v
    Secondary 240v

    ReplyDelete
  18. BAMIKOLE2226 September 2019 at 01:41

    The standard voltage and common system wiring in Nigeria is 230 V and the frequency is 50 Hz.
    Common system of wiring for primary is carried out by 3-phase, 3-wire system Voltages distribution BTW 11kv and 3.3kv
    FOR SECONDARY operate at low voltage 230-240 volts
    And frequency of 60hertz

    ReplyDelete
  19. Aremu1626 September 2019 at 02:57

    The standard voltages in Nigeria are:
    For Primary distribution : 33KV/11KV
    For Secondary distribution : 220V/240V
    System wiring;
    For primary distribution : 3 phase 3 wire system
    For secondary distribution :
    3phase 4 wiring system

    ReplyDelete
  20. Adeyemi0626 September 2019 at 04:25

    The primary distribution -
    33kv/11kv.(3 phase 3 wire system)

    The secondary distribution is done at 415/240V (3-phase 4-wire system.


    ADEYEMI06

    ReplyDelete
    Replies
    1. Ibrahim 0726 September 2019 at 04:45

      Primary distribution
      When evacuating power from the generating station, transformers are used to step up the voltage. The transmission voltages used in Nigeria are 330kV, 132kV and 33kV.
      These standard values are embedded into the grid system which is a system of INTETCONNECTED network of transmission lines.
      In summary, the process starts with power generation, then stepping up of these voltages after which they are connected to the grid. When the electricity reaches the transmission station, it is stepped down to a voltage of 11 or 33kV. However, this voltage is too high for most of our home appliances which explains why every residential or commercial area has transformers that step down this voltage to a lower voltage that can be used by the consumer.
      Secondary distsribution
      When the electricity reaches the Distribution companies, they make use of Distribution transformers to step down voltage from 11/33kV to 415V - 3 phase 220/240V single phase. Grid connection system is mostly used for the secondary distribution system in Nigeria.

      Delete
  21. Owoseeni5226 September 2019 at 05:25

    Standard voltage and wiring system in Nigeria for:
    1. Primary is 3phase 3wire @ 33kv or 11kv
    2. Secondary is 3phase 4 wire @ 415v, 2phase 3wire @ 330v, single phase 2wire @ 230v.

    ReplyDelete
    Replies
    1. Newtinz1 December 2019 at 08:52

      Ugele1059
      Standard voltage and wiring system in Nigeria for:
      1. Primary is 3phase 3wire @ 33kv or 11kv
      2. Secondary is 3phase 4 wire @ 415v, 2phase 3wire @ 330v, single phase 2wire @ 230v.

      Delete
  22. Eguakun2826 September 2019 at 05:31

    Wiring system for primary is 3phase 3wire wiring system and distribution voltage is 33kv, 11kv
    For secondary is 4wire for 3phase and 2wire for single phase at 415 and 240v

    ReplyDelete
  23. Ajiboye0926 September 2019 at 06:16

    In Nigeria, the common system wiring is 3phase 3wire wiring for the primary @ 33kv or 11kv with a frequency of 50 Hz. And 3phase 4wire @415v, 2phase 3wire @ 330v, and 1phase 2wire @ 230v.
    The Primary Distributions Voltage = 220V
    The Secondary Distribution Voltage =240V

    ReplyDelete
  24. Omoniyi5126 September 2019 at 14:17

    The standard voltages in Nigeria are:
    For Primary distribution : 33KV/11KV
    For Secondary distribution : 220V/240V
    System wiring;
    For primary distribution : 3phase 3 wire system.
    For secondary distribution :
    3phase 4 wiring system,
    2phase 3wire
    single phase 2wire.

    ReplyDelete
    Replies
    1. PapaT28 September 2019 at 11:36

      I think I concur with this answer. I am going to dub this😆😛😜

      Delete
  25. DJ white tee26 September 2019 at 16:01


    1) The common system writing for secondary distribution voltages is 400/230-V

    2) The common system writing for primary distribution voltages in Nigeria are 11 kV, 6.6 kV and 3.3 kV.

    ReplyDelete
    Replies
    1. Amakor27 September 2019 at 08:46

      Amakor 13
      The most common system for secondary distribution is 400/230-v

      Delete
  26. Ogbeifun4027 September 2019 at 08:50

    In Nigeria the standard voltage is 230 V and the frequency is 50 Hz. You can use your electric appliances in Nigeria, if the standard voltage in your country is in between 220 - 240v.

    ReplyDelete
  27. Amakor27 September 2019 at 08:54

    Primary distribution voltage in Nigeria is 3.3,6.6 and 11 kv

    ReplyDelete
  28. Amakor27 September 2019 at 08:54

    Primary distribution voltage in Nigeria is 3.3,6.6 and 11 kv

    ReplyDelete
  29. Amakor27 September 2019 at 08:54

    Primary distribution voltage in Nigeria is 3.3,6.6 and 11 kv

    ReplyDelete
  30. PapaT28 September 2019 at 11:37

    Adegun03
    The standard voltages in Nigeria are:
    For Primary distribution : 33KV/11KV
    For Secondary distribution : 220V/240V
    System wiring;
    For primary distribution : 3phase 3 wire system.
    For secondary distribution :
    3phase 4 wiring system,
    2phase 3wire
    single phase 2wire.

    Courtesy of omoniyi51

    ReplyDelete
  31. Saheed5628 September 2019 at 15:09

    Standard voltage and wiring system in Nigeria for:
    1. Primary is 3phase 3wire system is 33kv or 11kv
    2. Secondary is 3phase for wire is 415v, 2phase 3wire is 330v, single phase 2wire is 230v. This is the standard for Nigeria according to latest update

    ReplyDelete
  32. Body pain solution30 September 2019 at 07:48

    Standard voltage and wiring system in Nigeria for:
    Primary is 3phase 3wire @ 33kv or 11kv. While for secondary is 3phase 4 wire @ 415v, 2phase 3wire @ 330v, single phase 2wire @ 230v.

    ReplyDelete
  33. Haruna3430 September 2019 at 07:50

    Standard voltage and wiring system in Nigeria for:
    Primary is 3phase 3wire @ 33kv or 11kv. While for secondary is 3phase 4 wire @ 415v, 2phase 3wire @ 330v, single phase 2wire @ 230v.

    ReplyDelete
  34. ADEBAYO.0130 September 2019 at 07:51

    Standard voltage and wiring system in Nigeria for:
    Primary is 3phase 3wire @ 33kv or 11kv. While for secondary is 3phase 4 wire @ 415v, 2phase 3wire @ 330v, single phase 2wire @ 230v.

    ReplyDelete
  35. Fafowora012 October 2019 at 03:51

    Well, in Nigeria the standard voltage and common system wiring in Nigeria is 230 V and the frequency is 50 Hz.
    The distribution is 220V/240V

    Standard voltage and wiring system in Nigeria for:
    Primary is 3phase 3wire at 33kv or 11kv. While for secondary is 3phase 4 wire at 415v, 2phase 3wire at 330v, single phase 2wire at 230v.

    ReplyDelete
  36. Ojo4215 October 2019 at 00:39

    Standard voltage and wiring system in Nigeria for:
    1. Primary is 3phase 3wire system is 33kv or 11kv
    2. Secondary is 3phase for wire is 415v, 2phase 3wire is 330v, single phase 2wire is 230v. This is the standard for Nigeria according to latest update

    ReplyDelete
  37. Ojo4215 October 2019 at 00:43

    Standard voltage and wiring system in Nigeria for:
    1. Primary is 3phase 3wire system is 33kv or 11kv
    2. Secondary is 3phase for wire is 415v, 2phase 3wire is 330v, single phase 2wire is 230v. This is the standard for Nigeria according to latest update

    ReplyDelete
  38. Blessed0615 October 2019 at 01:34

    The standard voltage for
    Primary distribution : 33kv/11kv
    Secondary distribution : 0.415v

    Common system wiring for
    For primary distribution : 3 phase- 3 wire system
    For secondary distribution :
    3phase 4 wiring system.. Where the 4 wire is the neutral which steps the voltage down to 220v-240v. When used at consumer level..

    ReplyDelete

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