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WorksheetsMVC QUIZ
Total questions: 12
Worksheet time: 9mins
How many MV Power Cables Layers
5
6
7
9
What is importance of Inner semi conductor ?
Using to uniform the external surface of the stranded conductor to re-uniform the electrical field.
layer to withstand the potential difference and relief the electrical stresses
to drain the accumulated charges at the surface of the insulation and the presence of the Semi conductive layer between insulation and conductive layer is a must.
Metallic Sheath May be
iron
steel
Copper Wires or Copper tapes.
Filler is
Reduction of the electrical influence on the cable surroundings in case of an earth fault.
Using with multi Cores cables to fill between the cable phases during the assembly to get a rounded shape.
Using to protect the cable layers from the armor which may be sharp.
Straight Joint
Accessory making a connection between two cables to form a continuous circuit, suitable for use underground or in air.
Straight or branch joint making a connection between cables having different types of insulation, and/or conductor material, and/or conductor cross section area, and/or cable types.
Accessory making a connection of a branch cable to a main cable.
Cable Termination Definition
Metallic device to connect cable conductor to bus bar or bushing
Device fitted to the end of a cable to ensure electrical connection with other parts of the system and to maintain the insulation up to the point of connection.
termination intended for use where it is not exposed to either solar radiation or weathering.
Terminal box
Unique conductive insert design provides optimum electrical stress relief
Assures watertight seal and complete dielectric integrity
air- or compound-filled box fully enclosing a termination.
Clearance distance
shortest separation in the air between two conducting parts .
Shortest separation along the surface of an insulating material between two conducting parts
Creepage distance
shortest separation in the air between two conducting parts .
Shortest separation along the surface of an insulating material between two conducting parts .
Proto Type Test and Design Tests
“Tests made before supplying, on a general commercial basis, a type of accessory covered by the standard, in order to demonstrate satisfactory performance characteristics to meet the intended application.”
“Tests made by the manufacturer on samples of completed product or components taken from a completed product, at a specified frequency, so as to verify that the finished product meets the specified requirements ”
“Tests made to demonstrate the integrity of the cable and its accessories as installed.”
(FAT) Factory acceptance test
“Tests made before supplying, on a general commercial basis, a type of accessory covered by the standard, in order to demonstrate satisfactory performance characteristics to meet the intended application.”
“Tests made by the manufacturer on samples of completed product or components taken from a completed product, at a specified frequency, so as to verify that the finished product meets the specified requirements
Tests made to demonstrate the integrity of the cable and its accessories as installed.
(SAT) Site Acceptance Tests
Tests made before supplying, on a general commercial basis, a type of accessory covered by the standard, in order to demonstrate satisfactory performance characteristics to meet the intended application.
Tests made by the manufacturer on samples of completed product or components taken from a completed product, at a specified frequency, so as to verify that the finished product meets the specified requirements
Tests made to demonstrate the integrity of the cable and its accessories as installed.
