SCOPE OF WORK (ELECTRICAL) - CIDCO Maharashtra Ltd.
SCOPE OF WORK (ELECTRICAL) - CIDCO Maharashtra Ltd.
SCOPE OF WORK (ELECTRICAL) - CIDCO Maharashtra Ltd.
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<strong>CIDCO</strong> <strong>OF</strong> MAHARASHTRA LTD<br />
C.A.No.03/<strong>CIDCO</strong>/EE(Elect)/2011-12 Sr. Page No.<br />
1.1.3 Positive connection between all the frames of equipment mounted in the<br />
switchboard and earth busbar shall be provided by using insulated<br />
copper wires/bare busbars of cross section equal to that of the busbar.<br />
1.1.4 All instrument and relay cases shall be connected to the earth busbar<br />
using 1100/650V grade, 2.5 sq.mm. stranded copper earthing<br />
conductor.<br />
II) SPECIFICATIONS FOR EARTHING INSTALLATION<br />
1.0 <strong>SCOPE</strong><br />
The intent of this specification is to define the requirements for the<br />
supply, installation, testing and commissioning of the Earthing System.<br />
Note : The bidder shall have to design the earthing system required for<br />
the installation after measuring the soil resistivity & approvals.<br />
2.0 EARTHING CONDUCTOR/ELECTRODE :<br />
The main grid conductor shall be hot dip galvanized G.I. flat or PVC<br />
insulated aluminium conductor/copper conductor. Sizes for main<br />
conductors shall be marked on the drawings. Earth electrodes shall be as<br />
per IS standard. Thickness of hot dip galvanizing shall not be less than 75<br />
microns.<br />
3.0 EARTHING NET<strong>WORK</strong>:<br />
3.1 The entire earthing installation shall be done in accordance with the<br />
earthing drawings, specifications and the standard drawings of reference
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