INSTALLATION OF 11 KV LINE

STEPS TO BE FOLLOWED:

1.Take up survey and Route finalization

• Conduct detailed route survey to minimize bends,Crossings and obstacles
• Obtain Statutory clearance for forest,Railways and highways if any.
• Prepare Route map and Pole schedule

2.Foundation and Erection Supports

• Type of support: PCC poles (8/9/11 m), steel tubular poles, or lattice towers depending on span & terrain
• Excavation of pit as per soil type
• Concrete foundation (M15 / M20) with proper curing.
• Erection of poles/towers using crane, hydra, or manual derrick.
• Alignment check with theodolite/line dor
• 3.STRINGING OF EARTH WIRE AND CONDUCTORS:
• Stringing with pulley blocks to prevent conductor damage.
• Maintain statutory clearances,
• Road crossing – 6.1 m (min)
• Ground clearance – 5.8 m (min)
• Building clearance – 3.7 m (min horizontal
• Conductors commonly used: ACSR Weasel (30–60 sqmm), Dog (100 sqmm), Rabbit (55 sqmm).
  • Provide stay sets with stay insulators at angle and dead-end poles.
  • Earthing of each pole (GI wire/rod or pipe earthing)
  • Guarding wires for road crossings, telecom crossings, etc.Sagging & tensioning as per temperature and span length4.INSULATORS AND HARD WARE FITTINGS:
    • Pin insulators on straight poles, disc insulators for angle/dead-end locations.
    • Installation of clamps, strain fittings, suspension hardware
    • Double pole structures for section, cut-point, or tension points

    5.STAY SET AND EARTHING:

  • Provide stay sets with stay insulators at angle and dead-end poles.
  • Earthing of each pole (GI wire/rod or pipe earthing)
  • Guarding wires for road crossings, telecom crossings, etc.
  • 6.INSTALLATION OF ACCESSORIES:
    • Danger boards, phase plates, number plates on each pole.
    • Barbed wire fencing at DP/TP locations.
      • Anti-climbing devices
      • Painting of poles (red/white bands or aluminium paint).
      • .TESTING AND COMMISSIONING:
        • Megger testing of insulators & line sections
        • Verification of phasing & earthing
        • Sectional charging after approval from DISCOM/utility

        DOCUMENT SUBMISSION AFTER INSTALLATION

        • As-built drawing & route map.
        • Pole schedule & sag-tension charts
        • Test reports of earthing, insulation resistance
        • Completion certificate for utility inspection