SUBSTATION SAMPLE PHOTOS HANDBOOK Version: May 2015
Table of Content 1.0 Switchgear Room Removable Stainless Steel Hand Railings..3 Switchgear Louvred Door 5 HT Openings & Floor Frame...12 Opening for Marshaling Box, Pilot Box & Battery Charger.15 Equipment Dimension...16 LT Openings...17 DB Box 19 Trap Door...20 Lightings.24 Isolator 25 2.0 Cable Basement Cable Basement Door 26 Red Luminous Paint..27 Cable Ramp And Entry Pipes...29 3.0 Transformer Room Transformer Room Door...31 Transformer Plinth 32 4.0 Substation w/o cable basement.34 5.0 Temporary Substation...35 6.0 Earthing for s/s Lighting...40
7.0 Fencing 41 8.0 Draw Pit..42 9.0 Substation Main Gate 44 Butterfly Lock.44 10.0 Others 10.1 Signage 46 10.2 MCT 47 10.3 Cable Lugs..48 10.4 Hot Gland...51 11.0 Arrangement of single core cable..52 12.0 Backfill of sand at trench (for substation w/o cable basement) 53 13.0 Things to include in Handover Letter..54
Removable Stainless Steel Hand Railings Reference: Appendix 11, Railings Switchgear Room 100mm
Reference: Appendix 11, Railings SP POWERGRID LTD
Switchgear Louvred Door Reference: Appendix 12, Switchgear Louvred Door 50mm
Hasp & Staple Reference: Appendix 12 55mm 150mm 65mm 40mm 20mm 18mm 55mm 15mm
Reference: Appendix 12, Switchgear & Cable Chamber Exit Door 30mm Shoot bolt housing
Reference: Appendix 12, Switchgear Louvred Door 1m
Reference: Appendix 12, Switchgear & Cable Chamber Exit Door All doors must latched at the internal floor level Use Spacer if required
Reference: Appendix 12, Switchgear & Transformer Louvred Door All doors to be fitted with good quality door hook and must be able to open fully.
HT Openings & Floor Frame Screed the floor 5mm below the floor frame, after the floor frame had been fixed
600mm x 150mm checker plate / metal grating Checker Plate (Back View)
30mm gap Grating width must not more than 300mm
Opening for Marshaling Box, Pilot Box & Battery Charger Reference: Appendix 11, Floor Plan IDS RTU Marshalling Tools & Key Cabinet Battery Charger Pilot Box Box
Equipment Dimension Item DIMENSION (L X B X H)mm BATTERY CHARGER 960 x 390 x 1300 RTU 600 x 300 x 600 MARSHALLING BOX 790 x 300 x 1300 PILOT BOX 800 x 250 x 1300 IDS 390 x 240 x 500 TOOLS & KEY CABINET 800 x 360 x 1110
LT Openings To provide (2x25mm2)+16mm2 cu cable with 1m of flexi hose and hot gland from DB box to right side of the LT opening. LT Board 2200mm x 600mm x 1850mm
Distribution Box Reference: Appendix 15, Electrical Installation Single Line Diagram Must be endorsed by LEW All MCB must be Label
Trap Door Reference: Appendix 11, Aluminum Trap Door & Cat Ladder 860mm x 860mm Alum Trap Door 760mm x 760mm opening 250mm
Reference: Appendix 11, Aluminum Trap Door & Cat Ladder 1500mm 375mm
Reference: Appendix 11, Aluminum Trap Door & Cat Ladder Non slip type 200mm
300mm 200mm
Lightings Reference: Appendix 15, Electrical Installation Wall Lighting 2.4m Ceiling Lighting 3m
Isolator Isolator 1.5m
Cable Basement Cable Basement Door Reference: Appendix 12, Switchgear & Cable Chamber Exit Door 5 x 12mm Steel Bolts Shoot Bolt Housing 30mm
Red Luminous Paint Reference: Appendix 15, Cable Chamber Basement To paint front and back of all beam with 50mm Red Luminous Paint
Cable Ramp & Entry Pipes Reference: Appendix 11, Cable Ramp & Entry Pipes All entry pipes must be smoothed and flush to the wall 200mm Less or equal to 30 degrees 150mm
For Earthing Cable 200mm
Transformer Room Door Reference: Appendix 12, Transformer Room Louvred Door with Hasp & Staple 2x50mm
Transformer Plinth Appendix 11, Layout Plan 75mm x 25mm Deep Grove
Angled-iron to be solidly welded across the trench All cable trenches to be covered by removable hot-dipped galvanized mild steel gratings Angled-iron to be solidly welded across the trench
Substation w/o cable basement SP POWERGRID LTD
Temporary Substation SP POWERGRID LTD
LT Opening (OGB) 200mm
5-WAY OGB 830 X 320 X 1300
Trap Door SP POWERGRID LTD
Earthing for s/s Lighting To DB Box From Earth Pit
Fencing Reference: Appendix 15, Fencing (where required) 600mm wide concrete apron to surround the fence externally
Draw Pit SP POWERGRID LTD
Substation Main Gate Reference: Appendix 13, Gate Details
Butterfly Lock Reference: Appendix 13, Gate Details
Signage SP POWERGRID LTD
MCT SP POWERGRID LTD
Cable Lugs 1000mm2 4 holes cable lugs
500mm2 2 holes cable lugs
500mm2 1 holes cable lugs
Hot Gland SP POWERGRID LTD
Arrangement of 2 2 500mm or 1000mm Cu single core cables 2 2 Arrangement of 500mm or 1000mm Cu single core cables is carried out as shown below so that the current in each phase is evenly distributed between the cables for that phase. Arrangement 1 L3 L2 L1 N L1 L2 L3 Width For S/C 2 500mm - 280mm Width For S/C 2 1000mm - 380mm Arrangement 2 L3 L3 L2 L1 N L1 L2 Width For S/C 2 500mm - 200mm Width For S/C 2 1000mm - 280mm
Things to include in Handing Over letter **All the 7 item below need to be done by the main contractor after the substation work had been completed 1) Seal all cable entry pipes. 2) Backfill all trench with wash dry sand 3) Apply thin layer of cement 4) Touch-up paint work 5) Cover all excess opening with checker plate or grating 6) Any other minor defect work 7) 24/7 security access For handover of substation, kindly liaise with the Project Officer of the respective section using Appendix 5 form extracted from the How to Apply for Electricity Connection handbook.