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4ZC028
0010
SCALE 1:200
m20
AA
B
B
Figure 2.13:
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SUBSTATION MINIMUM ELECTRICAL CLEARANCES IN ACCORDANCE WITH TS 2.1
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REF
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NOMINAL SYSTEM VOLTAGE (rms)
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132kV
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400kV
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1
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PHASE TO EARTH EARTH CLEARANCE
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1.1M
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2.8M
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2
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PHASE TO PHASE CLEARANCE
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1.4M
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3.6M
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3
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DESIGN CLEARANCE FOR SAFETY (HORIZONTAL) DSH1
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2.9M
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4.6M
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4
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DESIGN CLEARANCE FOR SAFETY (VERTICAL) DSH1
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3.8M
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5.5M
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5
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INSULATION HEIGHT (PEDESTRIAN ACCESS)
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2.4M
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2.4M
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6
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SAFETY DISTANCE (FROM NGC SAFETY RULES)
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1.4M
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3.1M
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7
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MEWP DESIGN CLEARANCE FOR SAFETY (HORIZONTAL) DSH2
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4.9M
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6.6M
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MEWP DESIGN CLEARANCE FOR SAFETY (VERTICAL) DSH2
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5.8M
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7.5M
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400kV CIRCUIT
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132kV CIRCUIT
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PI
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ESW
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CSA
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ESW
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CSA
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CSA
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CSA
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NOTES: 1. ALL DIMENSIONS ARE IN MILLIMETERS. ALL DIMENSIONS ARE IN MILLIMETERS. 2. 400kV CABLES SHALL BE INSTALLED DIRECTLY IN 400kV CABLES SHALL BE INSTALLED DIRECTLY IN GROUND. 132kV CABLES SHALL BE INSTALLED IN TROUGHS 3. THE POSITIONING OF THE NEW TOWER HAS BEEN THE POSITIONING OF THE NEW TOWER HAS BEEN PROSCRIBED BY NATIONAL GRID'S CONTRACTOR. THE POSITION AND EFFECTS OF THIS ON THE TOWER STRUCTURE, FOUNDATIONS OR CONNECTIONS, INCLUDING ADHERENCE TO CLEARANCES HAS NOT BEEN ASSESSED IN ANY WAY BY WSP.
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LEGEND: PI - POST INSULATOR - POST INSULATOR POST INSULATOR ESW - EARTHING SWITCH - EARTHING SWITCH EARTHING SWITCH SA - SURGE ARRESTER - SURGE ARRESTER SURGE ARRESTER CSE - CABLE SEALING END - CABLE SEALING END CABLE SEALING END REMOVED EQUIPMENT NEW EQUIPMENT CONSTRUCTION SITE BOUNDARY
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Date:
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App'd
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Cre'd
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Description
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Date
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PROPOSED CILFOR SEALING END COMPOUND LAYOUT
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PDD-33494-LAY-021
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P0
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FIRST ISSUE
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SV
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JO
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MR
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05.06.19
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33494
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SNOWDONIA VIP
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EAST SITE
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P6
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SV
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05/06/19
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JO
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James Buckley
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LAY
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1:200
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1 OF 1
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EXISTING TOWER 4ZC027
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NEW TERMINAL TOWER 4ZC027. SEE NOTE 3.
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TRUE NORTH
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SA
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FINISH GROUND LEVEL
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TYPICAL DETAIL OF 132kV CABLE INSTALLATION IN CABLE TRUOGH (SCALE 1:20)