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Heat Shrinkable Moulded Shapes, Heat shrinkable right angle / straight boots, integral part of termination assembly of Power Cable upto 36 KV, India Heat Shrinkable Moulded Shapes, Heat shrinkable right angle / straight bootsTensile Strength, Ultimate Elongation, Density, Hardness, Water Absorption, India
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HEAT SHRINKABLE RIGHT ANGLE /  STRAIGHT BOOTS


Heat Shrinkable Right Angle boots ,Heat Shrinkable Straight Boots


Heat Shrinkable Right Angle and Straight Boots
are generally the integral part of termination assembly of Power Cable upto 36 KV, which provides insulation to the bushings in the terminating box, where the clearance between phase to phase and phase to earth is less than the normal air clearance. The insulated assembly by use of these boots provides protection against flashovers, short circuiting which may be due to highly humid conditions, rodent menace and surge impulse. These boots are produced from Cross Linked Polyolefin Materials.

Features :
  •  Excellent non-tracking performance
  •  Easy installation and better sealing
  •  Excellent Corrosion resistance
  •  Very high Dielectric strength and
     resistant to Impulse voltage
  •  Good for -40 Cº to 130 Cº continuous temperature


RIGHT ANGLE BOOT

Right Angle Boot

Right Angle Boot

CODE

D

d

P

R

T

 

s

f

s

f

f

f

f

min

max

min

max

min

min

+/-10%

GRB - 1 78 35 32 16 160 130 4.0
GRB - 2 78 36 52 27 170 140 4.5
GRB - 2A 91 37 67 27 170 140 4.5
GRB - 3 145 72 67 34 170 150 4.5

 

STRAIGHT BOOT

Straighy Boot

Straight Boot

CODE

D

d

A

L

B

T

 

s

f

s

f

f

f

f

f

min.

max.

min. max. min. min. min +/-10%
GSB - 1 80 34 34 21 140 225 30 3.6
GSB - 2 80 34 58 21 140 225 30 3.6
GSB - 3 140 65 90 33 155 325 40 4.2

D,d : Internal Diameter ; s : as supplied ; f : after free recovery ; Tb,Tc : Thickness of body & core

TECHNICAL SPECIFICATION 

Properties

Value

 Standard

Physical

   
  Tensile Strength   12 N/mm² (MPA) (min)   ASTM D638
  Ultimate Elongation   350% (Min.)   ASTM D638
  Density   1.15 +/-  0.2 gm/cm³   ASTM D792
  Hardness   45 +/- 10 Shore D   ASTM D2240
  Water Absorption   0.5 % (max.)   ASTM D570

Thermal 

   
  Accelerated Ageing
  Tensile Strength
  Ultimate Elongation
  (120oC for 500 Hrs)
  11 N/mm2 (Mpa) (min.)
  300 % (Min.)
  ASTM D2671
  ASTM D 638
  ASTM D 638
  Low temperature Flexibility
  (-40oC for 4 Hrs.)
  No Cracking   ASTM D2671
  Heat Shock 
  (250oC for 30 Min.)
  No Cracking or flowing   ESI 09-11
  Shrink Temperature   125°C   IEC 216
  Continuous Temperature limit   -40°C to  + 100°C   IEC 216

Electrical

   
  Dielectric Strength   12 KV/mm. (Min.)   ASTM D149
  Volume Resistivity   1 x 1014 Ohm.cm(min.)   ASTM D257
  Dielectric Constant   5 (Max.)   ASTM D150
  Resistant to track & erosion   No tracking,erosion or  
  flame failure upto 3.25 
  KV for 20 min. 
  ASTM D2303

 

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