9. Isolator, Jumpers, AT & Neutral Section

Isolator clearance between Phase and Earth is

• 450-500 mm

• 490-520 mm

• 500-550 mm

• 550-600 mm

'H' jumper distance from support is

• 5.60 m

• 2.50 m

• 3.50 m

• 2.25 m

Cross-section of a potential equalizing jumper, small jumper, or 'F' jumper is

• 65 sq.mm

• 107 sq.mm

• 50 sq.mm

• 105 sq.mm

230 V single-phase power supply required for

• Lighting of the station yard

• Operation of substation equipment

• Working of color light signals

• All the above

Identify the jumper shown.

• H-Jumper

• G-Jumper

• PH-Jumper

• None of the above.

100 KVA Auxiliary Transformers are placed at

• SSP

• Major Yards

• TSS

• Stations

'BDV' of Transformer oil should be

• 30 KV / minute

• 40 KV / minute

• 60 KV / minute

• 100 KV / minute

Isolators are on-load switches.

• True

• False

PTFE stands for

• Plastic Tetra Fluoro Ethane

• Poly Thermo Finials Ethane

• Poly Tetra Fluoro Enamel

• Poly Tetra Fluoro Ethylene

In uninsulated overlap, two OHEs are connected by providing

• C-Jumper

• F-Jumper

• G-Jumper

• S-Jumper