Heat Shrink Rain Shed – Tri-core – Hub

Heat Shrink Rain Shed - Tri-core

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Insulshed is used to increase the surface creepage distance of the cores of cable termination without increasing the tail length. They are also used to avoid continuity during rainy season to avoid short circuiting of the electrical network.

The rainsheds are made from high quality cross-linked polyolefin material that offers exceptional non tracking behaviour, insulation and long term service reliability for indoor and outdoor applications. The creepage extension sheds are internally coated with water resistant mastic.

Diagram

Selection Chart

SELECTION CHART

Gala Code	A (min.)	Ds (Â±3 mm)	Df (max.)	Hs (min.)	Tf (Â± 10%)
GRST-1	152	35	16	25	2.8
GRST-2	45	22	25	33	3.0
GRST-3	50	22	25	22	3.0

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	(120°C for 500 hrs)	ASTM D2671
Tensile Strength	11 N/mm² (Mpa) (min.)	ASTM D638
Ultimate Elongation	300 % (min.)	ASTM D638
Low Temperature Flexibility	No Cracking	ASTM D2671
(-40 0 C for 4 hrs.)
Heat Shock (250°C for 30 min.)	No cracking or flowing	ESI 09-11
Shrink Temperature	125°C	IEC 216
Continuous Temperature Limit	-40 to +100°C	IEC 216
Electrical
Dielectric Strength	15 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