Power Cable Accessories

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Technology of Heat-Shrinkable Products Cross linking and Shape Memory Thermoplastic materials are composed of extremely long, very thin molecules in a random arrangement. The strength of such a material depends upon the distance between its molecules and the crystalline nature of its molecular structure. As the material is heated, these crystals disappear. The molecules can then slip past each other easily and the material flows. While in this heated condition the material may be formed into almost any desired shape. Then, when the material is subsequently allowed to cool, the crystals reform and again provide substantial strength to retain the plastic in the shape in which it has been formed. Manufacture and Installation of heat-shrinkable tubing Beaming the tubing causes permanent crosslinking of adjacent molecules. The graphic is an enlarged schematic view of a very small crosslinked section of extremely long molecules and an end view of a piece of heat-shrinkable tubing. While in this deformed position, the tubing is cooled; the crystals then reappear, thereby locking the structure together in this deformed condition indefinitely. This is the form in which tubing is supplied to customers. 1 2 With the advent of atomic energy, the important discovery was made that the exposure of some plastic materials to high-energy electron beams can cause the permanent crosslinking, or intermolecular joining, of adjacent molecules. This crosslinking results in the chemical bonding of the plastic structure into a new three-dimensional system. Once the tubing has been crosslinked, the next step in imparting elastic memory is to heat the compound above its crystalline melting point. The molecules are then tied together only by the crosslinks. The customer then heats the tubing, melting the crystals. The crosslinks allow the material to return to its original shape. Once the material has been crosslinked, it will not melt or flow at any temperature. When the material is heated, the crystals still disappear as before, but it will no longer flow or change shape because the crosslinks act as ties between the molecules. The crosslinked structure, however, is elastic. Thus, when it is heated to a temperature where the crystals have melted, the material behaves like rubber. While hot, the tubing is deformed by applying pressure, thus stretching the crosslinked molecule. After cooling, the crystals reform and the tubing is locked in its recovered form.
Advantages of Raychem heat-shrinkable products Properties Advantages Benefits Crosslinked material No shelf life No warehouse losses Mechanical resistance Long lifetime Chemical resistance Long lifetime Putting into service Reduced outage time immediately after installation Heat-shrinkable Excellent range taking Less stock required Independent of large cable tolerances Installation and operation reliability Use of hot melt adhesives Excellent sealing and operational reliability No reduction of shrink strength Installation reliability Possible to install at low temperatures Universal use Raychem design Exceeding specifications Operational reliability in demanding environments Fits on different cable types and Universal use sizes of different manufacturers Consistent installation procedures Installation reliability Tolerates typical variations of Installation reliability cable preparation in the field Non toxic and No health hazards Health and safety environmentally friendly Minor waste, environmentally friendly Low disposal cost Complete kits with Simple installation Operational reliability factory tested insulation Fast installation Reduced outage time Dual wall tubing: Improved interfaces Operational reliability elastomeric insulation/ heat-shrinkable screen Reduced partial discharges Operational reliability Stress control tubing, Single piece, less risk of misplacement Operational reliability coating or patch Improved level of partial discharge Operational reliability 1 3
Page 1: Power Cable Accessories Catalogue 2
Page 5 and 6: Introduction Introduction General 4
Page 7 and 8: Installation No special tools are r
Page 9 and 10: Raychem Low Voltage Jointing System
Page 11 and 12: Raychem Medium Voltage Jointing Sys
Page 13: Stress distribution insine a joint
Page 17 and 18: Terminations Terminations - Low and
Page 19 and 20: Selection tables for polymeric insu
Page 21 and 22: Outdoor terminations for belted, pa
Page 23 and 24: Outdoor terminations for screened,
Page 25 and 26: Long term testing of 10 kV paper ca
Page 27 and 28: Outdoor terminations for flexible,
Page 29 and 30: Outdoor termination for unscreened,
Page 31 and 32: Outdoor termination for screened, 3
Page 33 and 34: Outdoor termination for screened 1-
Page 35 and 36: Elastomeric outdoor termination for
Page 37 and 38: Termination for polymeric insulated
Page 39 and 40: Connection Systems Connection Syste
Page 41 and 42: Universal adapter system for all ty
Page 43 and 44: RICS, RCAB - Insulated T-adapter an
Page 45 and 46: RSTI - Screened, separable T-connec
Page 47 and 48: RSES, RSSS - Screened elbow and str
Page 49 and 50: Low Voltage Joints Heat-shrinkable
Page 51 and 52: Joints for polymeric insulated cabl
Page 53 and 54: Transition joints for polymeric ins
Page 55 and 56: Joints for flexible, rubber insulat
Page 57 and 58: DuraSeal - pre-insulated connectors
Page 59 and 60: Branch joints for polymeric and pap
Page 61 and 62: Gel-filled inline, branch joints an
Page 63 and 64: Guroflex-filled branch joints up to
Page 65 and 66:
GUROFLEX - 2-component environmenta
Page 67 and 68:
Hellstern insulation piercing multi
Page 69 and 70:
Joints Joints - Medium Voltage Join
Page 71 and 72:
Joints for 3-core belted or screene
Page 73 and 74:
Joints for screened paper insulated
Page 75 and 76:
Joints for screened, flexible, rubb
Page 77 and 78:
Joints and repair joints for screen
Page 79 and 80:
Joints and repair joints for screen
Page 81 and 82:
Live end seals for screened, 1-core
Page 83 and 84:
Transition joints for polymeric ins
Page 85 and 86:
Transition joints for screened poly
Page 87 and 88:
Sealing Systems Sealing Systems Wal
Page 89 and 90:
Duct sealing system RDSS Unsealed c
Page 91 and 92:
RDSS - Adapter for large duct sizes
Page 93 and 94:
Sealing end caps 102L Application O
Page 95 and 96:
Repair Sleeves and Tubings Repair S
Page 97 and 98:
Repair sleeve for flexible cables M
Page 99 and 100:
Thick-wall, heat-shrinkable polyole
Page 101 and 102:
Thin-wall, heat-shrinkable polyolef
Page 103 and 104:
Tools and Accessories Tools and Acc
Page 105 and 106:
Accessories for gas torch assembly
Page 107 and 108:
Miscellaneous Tools Cable knife EXR
Page 109 and 110:
Accessories for solderless earth co
Page 111 and 112:
Connection Boxes Connection Boxes f
Page 113 and 114:
Connection Boxes for Lighting Appli
Page 115 and 116:
EKM 2020 - Connection Box for Light
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Fused connectors, fuses, screw caps
Page 126 and 127:
1 2 4 All of the above information,
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