Non-Tracking (Anti-Tracking) Heat Shrink Tube for Cable Joints (GAT)

About Non-Tracking (Anti-Tracking) Heat Shrink Tube for Cable Joints (GAT)

On a power cable termination or joint, moisture, dirt and pollution on the outer surface can carry small leakage currents that slowly burn conductive tracks into ordinary insulation. INSULTUBE Non Tracking, Gala code GAT, is made from a non-tracking cross-linked polyolefin compound that resists this surface tracking and erosion, so it is used as the outer insulating tube on cable joints and terminations where long-term surface performance matters.

GSF specifies the material against the ASTM D2303 inclined-plane tracking test, with no tracking, erosion or flame failure at 3.25 kV for 20 minutes.

Two wall grades are offered. Standard GAT has a 2.2 to 2.5 mm recovered wall and comes on 30 m or 15 m spools in eight sizes from 25/8 to 120/45. Heavy-wall GAT(HW) has a 5 mm recovered wall, in lengths up to 1.5 m, in eight sizes from 25/8 to 140/50. The first figure in the code is the minimum inside diameter as supplied, the second the maximum after recovery.

The tube shrinks at 125 deg C and is rated for continuous use from -40 deg C to +100 deg C. Custom dimensions, wall thickness, lengths and colours are available on request.

Manufactured by Gala in India. Datasheet and size selection on request.

Specifications

• Brand: Gala
• Product type: Non-tracking (anti-tracking) heat shrink tube
• Material: Non-tracking cross-linked polyolefin
• Colour: Red (orange-red as photographed; confirm with GSF)
• Operating temperature: -40 deg C to +100 deg C continuous
• Size range: GAT 25 mm to 120 mm supplied ID; GAT(HW) 25 mm to 140 mm supplied ID
• Wall type / thickness: GAT 2.2 to 2.5 mm; GAT(HW) 5 mm (after recovery, +/-10%)
• Standards tested to: Tracking and erosion to ASTM D2303 (GSF specification: no tracking, erosion or flame failure at 3.25 kV for 20 min - a test voltage, not a voltage rating); other test methods ASTM D638, ASTM D2671, ASTM D2240, ASTM D570, ASTM D149, ASTM D150
• Application: Outer tracking-resistant insulation on power cable joints and terminations
• Installation: Heat-shrunk with a gas torch as part of the joint or termination build-up
• Country of origin: India
• Shrink temperature: 125 deg C
• Tensile strength: 10 N/mm2 min (ASTM D638)
• Elongation at break: 350% min
• Hardness: 45 +/- 10 Shore D
• Water absorption: 0.5% max
• Thermal ageing: after 120 deg C for 500 h, tensile 8 N/mm2 min and elongation 250% min
• Low temperature flexibility: -40 deg C for 4 h, no cracking
• Heat shock: 250 deg C for 30 min, no cracking or flowing
• Dielectric strength: 15 kV/mm min (ASTM D149)
• Dielectric constant: 5 max
• Packing: GAT on 30 m or 15 m spools; GAT(HW) in lengths up to 1.5 m

Sizes

• GAT 25/8 | D 25 / d 8 | T 2.2 | 30 m spool
• GAT 35/12 | D 35 / d 12 | T 2.4 | 30 m spool
• GAT 45/16 | D 45 / d 16 | T 2.5 | 30 m spool
• GAT 55/20 | D 55 / d 20 | T 2.5 | 30 m spool
• GAT 65/25 | D 65 / d 25 | T 2.5 | 15 m spool
• GAT 75/28 | D 75 / d 28 | T 2.5 | 15 m spool
• GAT 100/38 | D 100 / d 38 | T 2.5 | 15 m spool
• GAT 120/45 | D 120 / d 45 | T 2.5 | 15 m spool
• GAT(HW) 25/8 | D 25 / d 8 | T 5 | up to 1.5 m
• GAT(HW) 35/12 | D 35 / d 12 | T 5 | up to 1.5 m
• GAT(HW) 55/18 | D 55 / d 18 | T 5 | up to 1.5 m
• GAT(HW) 65/25 | D 65 / d 25 | T 5 | up to 1.5 m
• GAT(HW) 85/30 | D 85 / d 30 | T 5 | up to 1.5 m
• GAT(HW) 100/38 | D 100 / d 38 | T 5 | up to 1.5 m
• GAT(HW) 120/45 | D 120 / d 45 | T 5 | up to 1.5 m
• GAT(HW) 140/50 | D 140 / d 50 | T 5 | up to 1.5 m

Applications: Cable jointing and termination contractors, heat-shrink kit makers, power distribution utilities, substations, industrial plants with outdoor cable terminations, coastal and polluted locations