Construction of Common Medium-Voltage Cables Flashcards
1
Q
Which medium-voltage cable is the most widely used for heavy industrial applications?
A
Teck
2
Q
What are the two functions of the outer concentric conductor on a URD cable?
A
- Current-carrying neutral
- Shielding
3
Q
Can a shielded cables insulation-shield metallic tape(s) be used as a return neutral?
A
No
4
Q
Where do you obtain the ampacities for shielded cables?
A
IEEE/ICEA tables
5
Q
What factor determines the minimum available AWG size of an HV cable?
A
The voltage rating of the cable
6
Q
The ampacity of a non shielded cable is based on an ambient temperature of _____
A
30°C
7
Q
The ampacity of a shielded cable is based on the ambient temperature of _____
A
40°C
8
Q
What are the two most common voltage ratings of medium-voltage cables used for power applications?
A
15kV and 25kV
