STRAIGHT AND RIGHT ANGLE BOOTS

APPLICATIONS:

Heat shrinkable straight and right angle boots are used to insulated the bushings in cable termination boxes up to 36 kV specially where the clearance phase to phase and phase to earth is less then the normal air clearance. These boots provide protection against flash over in the event of high humidity, rodent men-ace and surge impulse. The boots are made from thermally stablized, cross linked, insulating and weather resistant polymeric material. These are coated internally with water resistant mastic.

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

MATERIAL SPECIFICATIONS

CHARACTERISTIC VALUE TEST METHOD
CHARACTERISTIC VALUE TEST METHOD
PHYSICAL PROPERTIES
Specifice Gravity 1.15 +02 ASTM D-1505
Water Absorption 1% (Max.) ASTM D-570/ISO 62
Tensile Strength 6N/SOMM (Min.) ASTM D-412/ISO 37
Ultimate Elongation 200% (Min.) ASTM D-412/ISO 37
Hardness 28 +3 Shore D ASTM D-2240
THERMAL AGING TEST AT 120째 FOR 500 HOURS
Tensile Strength 5.5 N/SMM (Min.) ASTM D-412/ISO 37
Ultimate Elongation 100% (Min.) ASTM D-412/ISO 37
ELECTRICAL PROPERTIES
Volume resistivity 1 x 10ohm cm (Min.) ASTM D 257/IEC 93
Di-electric Strength 10kv/mm (Min.) ASTM D 149/IEC 243
Di-electric constant 5 (Max.) ASTM D 150/IEC 250

DIMENSIONS - GSB SERIES

A D d L B T
Model No. S E S E S S S S
min min max. min max min min s+20%
GSB 1 140 80 33 34 20 255 40 3.6
GSB 2 140 80 33 58 20 255 40 3.6
GSB 3 155 80 50 90 50 350 40 3.5

DIMENSIONS - GRAB SERIES

D d P R E O T
Model No. E S E S S S S S S
min max min max min min min Deg. +-20%
GRAB 1 70 37 36 20 130 100 25 105 3.5
GRAB 2 70 37 50 27 140 110 11 11 4.5
GRAB 2A 95 37 67 27 140 120 25 105 4.5
GRAB 3 145 72 65 34 150 155 35 95 4.5