Worksheets6. Insulator, Droppers, Cantilevers, Bracket Adjustment and SED
Total questions: 15
Worksheet time: 8mins
Lightweight section insulators are required for
Sectioning
All the Above
Maintain profile of OHE
Low speed
“A” dropper distance from supports is
9m
None of the above.
2.25m
6.75m
Nonstandard span dropper distances are adjusted between
B-C
A-B
A
C-C
Isolators are supported above a mast with
Bracket insulator
Tie rod insulator
Pedestal / Support insulator
Stay insulator
Insulators are tested by the client again before erection.
FALSE
TRUE
Creepage distance of insulators in highly polluted zone area at the DFCC project
1050 mm
850 mm
1612 mm
1650 mm
Droppers are required to maintain the OHE profile.
TRUE
FALSE
Creepage distance of BMC insulator is 307 mm.
True
False
The spacing distance of hangers in high speed is
10m
9m
6.75m
5m
Which fitting should be provided when the suspension distance exceeds 3.6 meters?
Adopter
Chair Fitting
Guyrod Fitting
Anchor Fitting
The use of Modular Cantilever arrangements provides the advantage of being lightweight and easy to install.
TRUE
FALSE
Which insulator arrangement is used in polluted zone areas of a High-Speed Rail project?
3 Disc Insulator
4 Disc Insulator
5 Disc Insulator
None
Identify the type of cantilever shown in the picture.
Pull-off
Push-off
What is the size of the Al. bracket tube in a modular cantilever?
40mm
49mm
55mm
70mm
SED is not required for cantilever fabrication and erection.
TRUE
FALSE
