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Heat Shrinkable Right Angle/Straight Boot

DESCRIPTIONS

Angle boots are Heat Shrink Right Angle / Straight Boots provide insulation to the bushings in the cable termination box, where the clearance between phase to phase and phase to earth is less then the normal air clearance. These boots provide protection against flashover in the event of high humidity, rodent menace and surge impulse. The boots are mode from high quality cross linked non tracking polyolefin material. They are internally coated with water resistant red mastic.

SALIENT FEATURES

  • Excellent insulation, flame retardant, thermal stability, etc
  • Used to protect cable against flashover or surges induce in switchgear and transformer
  • Shaped components to meet a range of requirements
  • Continuous operation temperature: -550C to 1000C

SELECTION GUIDE (Right Angle Boot)
All dimensions are in mm

Code D d P R T
  s f s f s f f
  Min Max Min Max Min Min Min
CRAB-1 78 35 34 16 160 130 4.0
CRAB-2 78 37 52 27 170 140 4.5
CRAB-2A 90 37 67 27 170 140 4.5
CRAB-3 140 64 67 34 170 150 4.5

SELECTION GUIDE (Straight Boot)
All dimensions are in mm

Code D d A L B T
  s f s f F F FF
  Min Max Min Max Min Min Min +10%
CRAB-1 80 34 34 21 140 225 30 3.6
CRAB-2 80 34 58 21 140 225 30 3.6
CRAB-2A 100 34 57 21 140 225 303.6
CRAB-3 140 65 90 33 155 325 40 4.2

TECHNICAL SPECIFICATIONS

Properties Value Standard
Physical    
Tensile Strength 12 Mpa (N/mm2)(Min) ASTM D638
Ultimate Elogation 300 % (Min) ASTM D 638
Longitudinal Change +10 % (Min) ASTM D 2671
Hardness 45 Shore D ASTM D2240
Thermal    
Accelerated Ageing (1200C for 500 hrs ASTM D2671
Tensil Strength 10 Mpa N/mm2 (Min) ASTM D638
Ultimate Elongation 300% (Min) ASTM D638
Low Temperature Flexibility
-200C for 4 Hrs
No Cracking ASTM 2671
Heat shock (2500C for 30 Min) No Cracking or flowing ESI 09-11
Shrink Temperature 1250C IEC 216
Continous Temperature Limit -400C to +1000C IEC 216
Electrical    
Volume Resistivity 1 x 1012 ohm cm Min ASTM D257
Dielectric Constant 15 (Min) ASTM D150