CableDataSheet, Cable and Wire Technical Consulting Service

Geca Tapes "Green Book" Water blocking and corrosion protection
                                                                                                                                                                                                             
You are not allowed to view links. Register or Login

You are not allowed to view links. Register or Login

TABLE OF CONTENTS
STATEMENT OF CONFIDENTIALITY...3
ABSTRACT ...4
KEY TERMINOLOGY...4
SUMMARY: CABLE PERFORMANCE ...5
SUMMARY: CABLE MANUFACTURING ...6
WHY BOTHER CHANGING THINGS? ...6
A SHORT HISTORY OF UNDERGROUND POWER CABLES......................................................................................6
REDUCTION IN LIFE-CYCLE COSTS ...7
LIFE-CYCLE COSTING ...8
CORROSION PROTECTION ...9
EASE OF FIELD SPLICING...9
HOW DO SUPERABSORBENT POLYMERS WORK?.................................................................................9
SAP CHEMISTRY...9
A WORD OF CAUTION...10
ADDITIONAL INFORMATION ON SUPERABSORBENT POLYMER MATERIALS.......................................................11
ACTIVE WATER BLOCKING ACTION...11
WATER BLOCKING MATERIALS ...13
TAPES...13
WATER BLOCKING YARNS ...14
WATER BLOCKING FILLER YARNS ...15
WATER BLOCKING FLAT BINDERS...16
HOW WELL DO THE MATERIALS WORK?..............................................................................................16
COMPATIBILITY BETWEEN CABLE MATERIALS.................................................................................................16
LONG TERM THERMAL STABILITY OF WATER BLOCKING TAPES......................................................................17
SHORT TERM STABILITY OF WATER BLOCKING TAPES .....................................................................................18
REPEATABILITY OF WATER BLOCKING ACTION................................................................................................19
CABLE DESIGN...20
CASE STUDY 1: 2500 MM2 EHV SEGMENTED CONDUCTOR ..............................................................................22
CASE STUDY 2: MULTI-CORE LV CABLE ...22
CASE STUDY 3: FULLY WATER BLOCKED 3 X 185 MM2MULTI CORE MV CABLES..........................................23
FROM THE CABLE MAKER'S VIEWPOINT .............................................................................................24
CONDUCTOR WATER BLOCKING BY TAR FILLING VERSUS SUPERABSORBERS ..................................................24
TRUE COSTS OF PRODUCTION ...25
DISADVANTAGES OF SAP POWDER APPLICATION IN CONDUCTOR OR SCREEN.................................................28
DISADVANTAGES OF WATER BLOCKING FILLING COMPOUNDS ........................................................................28
MATERIALS TO USE ...29
YARN SERVERS ...30
HELICAL TAPE SERVERS ...31
LONGITUDINAL TAPE SERVERS ...31
MATERIAL HANDLING AND LOGISTICS ...32
ENVIRONMENTAL CONSIDERATIONS ...32
DETERMINE THE BEST WATER BLOCKING METHOD.........................................................................................33
TYPICAL CABLE DEVELOPMENT STRATEGY...34
SPLICING METHODS: YARN...34
SPLICING METHODS: TAPE...35