DUAL WALL TUBINGS

APPLICATIONS:-

Heat shrinkable Dual wall insulating tubes (With semicon layer) are used in high voltage plastic and paper insulated cable joints up to 36kv to provide insulation and insulation screen on the build up insulation over connectors the insulation layer are made from thermally stabilized cross linked with high resistance polymeric material and the semicon layer are made from thermally stabilized cross linked semi-conductive polymeric material.

  • All dimensions are in mm
  • Drawing depicts typical dimensions
  • E - As supplied
  • S - After free recovery
  • D, d - internal diameter without adhesive coating LC - Longitudinal change
  • T- Thickness

Cinque Terre

TUBINGS DIMENSIONS-GDWT SERIES

SIZE D B A LC T
E S E S E S S
min. max. min. min. min. % +20%
GEC 001 12 4.5 45 40 15 +10% 1.2
GEC 101 20 9 60 55 20 +10% 3.0
GEC 101L 20 9 110 100 35 +10% 3.0
GEC 201 35 16 80 75 30 +10% 3.0
GEC 201L 35 16 140 135 35 +10% 3.0
GEC 301 55 25 90 85 30 +10% 4.0
GEC 301L 55 25 150 140 50 +10% 4.0
GEC 401 75 34 150 100 50 +10% 4.2
GEC 401L 75 34 175 165 70 +10% 4.2
GEC 501 100 59 110 100 70 +10% 4.2
GEC 501L 100 59 190 180 70 +10% 4.2
GEC 601 120 59 110 100 70 +10% 4.2
GEC 601L 145 71 120 110 70 +10% 4.6

MATERIAL SPECIFICATIONS

CHARACTERISTIC
VALUE
TEST METHOD
PHYSICAL PROPERTIES
Specific gravity 1.19 + 0.2 ASTM D-1505
Water Absorption 1 %(Max.) ASTM D-570/ISO 62
Colour Black
Tensile Strength 8N/SQMM(MIN.) ASTM D-412/ISO 37
Ultimate Elongation 200%(Min.) ASTM D-412/ISO 37
THERMAL AGING TEST AT 120º FOR 500 HOURS
Tensile Strenght 7 N/Sq MM(Min.) ASTM D-412/ISO 37
Ultimate ELONGATION 100%(Min.) ASTM D-412/ISO 37
ELECTRICAL PROPERTIES
Volume resistivity 1 × 10 ohm cm (Min.) ASTM D 257/IEC 93
DI-ELECTRICAL Strength 10KV/MM(Min.) ASTM D 149/IEC 243
DI ELECTRICAL Constant 5(Min.) ASTM D 150/IEC 250
CHEMIAL PROPERTIES
Fungus Resistance <1 ASTM G-21
Salt Spray test No pitting/No Corrosion ASTM B-117
Chemical resisant immersion in following liquids Naoh(40%)H2SO4(3%),Toluene acetone for 24 hrs.at room temp. Good(No Visual Defects) SCO 175
THERMAL TESTS
Heat Shock(30.min,at 200º) No Cracking flow ESI-09-13
Low Temp Flexbility(-40ºC) No Cracking ASTM D 2671