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HEAT SHRINK BUSBAR TUBING

Heat Shrinkable Tubes,Busbar Tubes,Heat Shrink Busbar Tubes

Cross linked polyolefin material
Anti-Track
Reduces Bus bar clearance
High dielectric strength
Flame retardant
Protects against accidental flash overs
Halogen free
Compliance with ESI 09-11 standard

TECHNICAL SPECIFICATION

Properties

Value

Standard

Physical

Tensile Strength 8 N/mm� (MPA) ASTM D638

Ultimate Elongation 300% (Min.) ASTM D638

Density 1.20 +/- 0.2 gm/cm� ASTM D792

Hardness 45 +/- 10 Shore D ASTM D2240

Water Absorption 0.5 % (max.) ASTM D570

Thermal

Accelerated Ageing
Tensile Strength
Ultimate Elongation (120^oC for 500 Hrs)
7 N/mm² (Mpa) (min.)
250 % (Min.) ASTM D2671
ASTM D 638
ASTM D 638

Low temperature Flexibility
(-40oC for 4 Hrs.) No Cracking ASTM D2671

Heat Shock
(250^oC 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 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

Medium Wall Bus Tubing

Suitable for insulation of medium voltage Bus bar upto 25 KV to reduce the distance between two phases in switchboards..

Standard length 1000mm and 1200mm
Standard colour Red.

Code	D Min (mm)	D Max (mm)	T (mm)
GMB 25/8	25	8	2.5
GMB 30/12	30	12	2.5
GMB 40/16	40	16	2.5
GMB 50/20	50	20	2.5
GMB 75/28	70	28	3.0
GMB 100/38	100	38	3.0
GMB 120/42	120	42	3.0
GMB 160/50	160	50	3.0

Heavy Wall Bus Tubing

Suitable for insulation of medium voltage Bus bar upto 36 KV to reduce the distance between two phases in switchboards..

Also suitable for insulation of connectors for LV Joints

Standard length 1000mm and 1200mm
Standard colour Red.

Code	D Min (mm)	D Max (mm)	T (mm)
GHB 25/8	25	8	3.7
GHB 30/12	30	12	4.0
GHB 40/16	40	16	4.0
GHB 50/20	50	20	4.0
GHB 75/28	75	28	4.0
GHB 100/38	100	38	4.2
GHB 120/42	120	42	4.2
GHB 160/50	160	50	4.5

Clearances with Insulation
Voltage	Medium Wall Tube (GMB)		Heavy Wall Tube (GHB)
Voltage	Ph. to Ph. (mm)	Ph. to gr. (mm)	Ph. to ph (mm)	Ph. to gr.(mm)
15 KV	86	106	55	65
25 KV	114	152	70	100
36 KV	190	280	140	190