Overhead Transmission Lines (OHTL)
Overview:
MAZEED offers complete design of OHTL, our expertise with extensive experience for all EHV / HV OHTL for different type of towers work to design complete work, BOQ and material list and produce base & detail design drawing a professional manner as per SEC standard & international standard codes .
Our OHTL Services Include:
The Electrical works include the following works:
- Sag & Tension Calculations basis for Conductor & GW (actual ruling spans)
- Stringing Sag & Tension Charts for Conductor & GW
- Foundation design calculations for wooden poles
- Transmission line route plan with spotted structure
- Plan and profile with spotted structure & Sag template curves
- Insulator fittings and hardware assembly details
- Conductor fittings and hardware assembly details
- Vertical and horizontal switches arrangement and layout
- Wooden poles grounding details
- Transmission line Phase diagram and circuit identification
- Take-off structure circuit identification & phase diagram (if any)
- GW fittings and hardware assembly details
- GW overall arrangement layout
- Foundation details drawings for wooden poles
- Layout and details of warning signs
- Calculations for:
- Size of OHLT conductor
- Transformer (all transformers) sizing
- MV Cable sizing & LV and control cable sizing
- Earthing system design
- Lighting system design for the substation
- Other equipment as required
- Cable schedules, interconnection schedules
- Itemized BOQ list for each equipment/material
Civil Engineering & Design work
- Foundation design calculations for latticed steel Towers & Gantry structures
- Layout and details of concrete crash barriers
- Foundation Design Calculations / Drawings for CSE & SA
- Foundation details for each type of towers
- Calculation for each type of foundations
