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• PRACTICED ALREADY FOR UNDERGROUND INSTALLATIONS SUPPLIED /
INSTALLED AND MAINTAINED BY OWNER..
• DIRECT BURIED INSTALLATIONS ARE NOT DONE YET BY A UTILITY COMPANY
IN THE PHILIPPINES
• APPROVAL OF THE SYSTEM NEEDS TESTING, MOCK-UP AND/OR VISIT ON THE EXISTING INSTALLATION BY THE UTILITY COMPANY AND ENGINEERS.
TWO METHODS OF INSTALLING THE UNDERGROUND DISTRIBUTION SYSTEM
A. RIGID PVC IN CONCRETE ENCASEMENT (DUCT BANK)
• WIDELY USED (IN THE PHILIPPINES AND ABROAD)
• STANDARD PRACTICE OF THE UTILITY COMPANY (MERALCO)
• COMPLIES WITH CODE (NEC AND PEC)
• PATENTED IN 1933 BY BF GOODRICH COMPANY
B. DIRECT BURIAL SYSTEM (NO CONCRETE ENCASEMENT)
• CABLE ARE DIRECTLY BURIED UNDERGROUND WITH SAND BEDDING ON TOP AND BOTTOM (ARMOURED CABLE AND TYPE UF CABLE)
• CABLE ARE PLACED INSIDE CONDUIT BUT ARE DIRECTLY BURIED WITH CONCRETE BLOCK ON TOP
WHERE WAS IT USED?
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1. HAMILO COAST AT NASUGBU BATANGAS
OWNER: COSTA DEL HAMILO (SUBSIDIARY OF SM INVESTMENT CORP.)
CABLE USED: 3 CORE 15 KV ARMORED MEDIUM VOLTAGE CABLE DIRECTLY BURIED WITH SAND AS BEDDING. |
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2. LAKEVIEW HEIGHTS & ALTA MIRA
OWNER: SM
CABLE USED : 15KV CABLE IN CONDUIT WITH NO ENCASEMENT BUT WITH CONCRETE BLOCK ABOVE |
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3. KEPCO POWER PLANTS
LAGUNA AND ILIGAN
CABLE USED: 24KV CABLE IN HDPE PIPES (NO ENCASEMENT) |
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4. NORTH LUZON EXPRESSWAY
CABLE USED: LOW VOLTAGE CABLE AND CONTROL CABLE IN HDPE PIPES |
WHY USE DIRECT BURIAL SYSTEM USING HDPE COIL PIPE?
• PIPES ARE EASY TO INSTALL
• CHEAPER – BIG SAVINGS ON TOTAL PROJECT COST
• REDUCTION ON CONSTRUCTION PERIOD
• MINIMAL OR NO MAINTENANCE NECESSARY
CLICK HERE TO VIEW COMPARISON BETWEEN HDPE COIL CONDUIT AND PVC PIPES
WHO ALREADY USES HDPE COIL CONDUIT PIPE?
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AUSTRIALIA WESTERN POWER |
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UNITED STATES LONGMONT POWER & COMMUNICATIONS, COLORADO U.S.A. |
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NEW YORK REGIONAL INTERCONNECTION (NYRI) |
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PHILIPPINES KEPCO, PHILS. (LAGUNA AND ILIGAN) |
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NORTH LUZON EXPRESS HIGHWAY (NLEX) |
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SOUTH KOREA |
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