Assignment

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Thabiso

Member
Location
South Africa, Cape Town
A three phase motor is installed to drive a single conveyor belt forward and backwards on a car assembly line. The circuit specifications are as follows:
Supply line voltage = 400V
Frequency = 50Hz
Power rating of motor = 8kW
Power factor = 0.8
Length of cables = 100m
Hint: quote all cables used.
Questions:

  1. Choose a suitable cable and give reasons
  2. Select a suitable method of installing the cable and give reasons
  3. Make a labelled sketch of the control circuit of the diagram and the power diagram.
  4. Name the type of conduit used to connect the motor to its control panel and give reasons
  5. Calculate the minimum cable size for the installation
  6. Calculate the actual voltage drop of the installation
  7. Calculate the percent voltage drop
YOUR HELP IS HIGHLY APPRECIATED

Yours Sincerely
Thabiso:roll:
 
augie47

augie47

Moderator
Staff member
Location
Tennessee
Occupation
State Electrical Inspector (Retired)
I think you will find most here are willing to HELP, but not willing to complete YOUR assignment for you.
Please show us your answers, possibly briefly how you determined them, and we can provide input.
 
Besoeker

Besoeker

Senior Member
Location
UK
Thabiso said:
A three phase motor is installed to drive a single conveyor belt forward and backwards on a car assembly line. The circuit specifications are as follows:
Supply line voltage = 400V
Frequency = 50Hz
Power rating of motor = 8kW
Power factor = 0.8
Length of cables = 100m
Hint: quote all cables used.
Questions:

  1. Choose a suitable cable and give reasons
  2. Select a suitable method of installing the cable and give reasons
  3. Make a labelled sketch of the control circuit of the diagram and the power diagram.
  4. Name the type of conduit used to connect the motor to its control panel and give reasons
  5. Calculate the minimum cable size for the installation
  6. Calculate the actual voltage drop of the installation
  7. Calculate the percent voltage drop
YOUR HELP IS HIGHLY APPRECIATED

Yours Sincerely
Thabiso:roll:
Click to expand...

400V and 50Hz suggests that you are in a European country or perhaps an ex UK colonial country.
This forum deals with NEC code which is specific to North America. You may not get answers that are applicable to your location.
 
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