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Heat Shrink Busbar Tubes
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We are recognized as one of prominent Heat Shrink Busbar Tubes Manufacturers in the national and international markets. Our Heat Shrink Busbar Tubes are red colored heavy and medium walls unlined tubes. We have constructed our Heat Shrink Busbar Tubes from non-tracking cross linked polyolefin material that meet the parameters of ANSI C37.20.2 standards.
Salient Features :
- Reduces Busbar clearance
- Prevents busbar from getting corroded by alkali, strong acid, salt, etc.
- Eliminates the trouble of insulation among busbar in bus duct
- Flame retardant
- High dielectric strength
- Halogen free
- Highly flexible
Suitable for :
- Insulating busbar systems up to 36 KV
- Providing protection against accidental flashover
- MV switch gear application up to 36 KV
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Selection Chart
| Thin Wall Tube[ Up to 1KV ] | | Gala Size | D | d | T(+10%) | Reel length | Rectangular Bars (L+W) | Round Bar | | mm(min.) | mm(max.) | mm | mtrs. | Min. | max. | Min. | max. | | GTB 15/7.5 | 15 | 7.5 | 0.69 | 50 | 12 | 18 | 8 | 12 | | GTB 20/10 | 20 | 10 | 0.78 | 50 | 16 | 27 | 12 | 17 | | GTB 30/15 | 30 | 15 | 0.86 | 50 | 23 | 41 | 18 | 26 | | GTB 35/17.5 | 35 | 17.5 | 0.90 | 50 | 31 | 51 | 20 | 32 | | GTB 40/20 | 40 | 20 | 0.96 | 25 | 34 | 57 | 23 | 36 | | GTB 50/25 | 50 | 25 | 0.96 | 25 | 51 | 73 | 28 | 46 | | GTB 60/30 | 60 | 30 | 0.96 | 25 | 53 | 87 | 34 | 55 | | GTB 70/35 | 70 | 35 | 1.10 | 25 | 71 | 103 | 38 | 65 | | GTB 80/40 | 80 | 40 | 1.27 | 25 | 78 | 120 | 46 | 76 | | GTB 90/45 | 90 | 45 | 1.35 | 25 | 87 | 132 | 49 | 84 | | GTB 100/50 | 100 | 50 | 1.40 | 25 | 102 | 147 | 55 | 93 | | GTB 150/75 | 150 | 75 | 1.50 | 25 | 119 | 220 | 80 | 140 | | Medium Wall Tube[ Up to 24KV ] | | GMB 16/6 | 16 | 6 | 2.5 | 30 | 12 | 18 | 6.5 | 12 | | GMB 25/8 | 25 | 8 | 2.5 | 30 | 16 | 30 | 9 | 20 | | GMB 30/12 | 30 | 12 | 2.5 | 30 | 22 | 38 | 13.5 | 25 | | GMB 40/16 | 40 | 16 | 2.5 | 30 | 29 | 52 | 18 | 35 | | GMB 50/20 | 50 | 20 | 2.5 | 30 | 36 | 65 | 22 | 43 | | GMB 75/28 | 75 | 28 | 3.0 | 15 | 55 | 95 | 33 | 63 | | GMB 100/38 | 100 | 38 | 3.0 | 15 | 70 | 130 | 44 | 86 | | GMB 125/45 | 120 | 45 | 3.0 | 15 | 90 | 165 | 55 | 105 | | GMB 140/52 | 140 | 52 | 3.0 | 12 | 100 | 180 | 64 | 118 | | GMB 160/60 | 160 | 60 | 3.0 | 1.5 | 110 | 210 | 70 | 130 | | GMB 180/65 | 180 | 65 | 3.0 | 1.5 | 125 | 235 | 80 | 150 | | GMB 205/85 | 205 | 85 | 3.0 | 1.5 | 200 | 276 | 127 | 190 | | Heavy Wall Tube[ Up to 36KV ] | | GHB 25/8 | 25 | 8 | 3.7 | 20 | 17 | 28 | 11 | 20 | | GHB 30/12 | 30 | 12 | 4.0 | 20 | 21 | 33 | 15 | 25 | | GHB 40/16 | 40 | 16 | 4.0 | 20 | 28 | 45 | 18 | 32 | | GHB 50/20 | 50 | 20 | 4.0 | 20 | 34 | 54 | 24 | 40 | | GHB 75/28 | 75 | 28 | 4.0 | 15 | 47 | 69 | 28 | 47 | | GHB 100/38 | 100 | 38 | 4.2 | 15 | 69 | 102 | 44 | 72 | | GHB 120/45 | 120 | 45 | 4.2 | 12 | - | - | - | - | | GHB 140/52 | 140 | 52 | 4.2 | 1.5 | 97 | 145 | 57 | 96 | | GHB 160/60 | 160 | 60 | 4.5 | 1.5 | 102 | 168 | 65 | 105 | | GHB 180/65 | 180 | 65 | 4.5 | 1.5 | 133 | 196 | 85 | 125 | | GTB 90/45 | 90 | 45 | 1.35 | 25 | 87 | 132 | 49 | 84 | | GTB 100/50 | 100 | 50 | 1.40 | 25 | 102 | 102 | 55 | 93 | | GTB 150/75 | 150 | 75 | 1.50 | 25 | 119 | 220 | 80 | 140 |
Technical Specifications
| Properties | Value | Standard | | Physical | | Tensile Strength | 10 N/mm2 (MPA)(min) | ASTM D638 | | Ultimate Elongation | 300% (Min.) | ASTM D638 | | Longitudinal Change | -10% (max.) | ASTM D2671 | | Density | 1.20 ± 0.2 gm/cm3 | ASTM D792 | | Hardness | 45 ± 10 Shore D | ASTM D2240 | | Water absorption | 0.5 % (max.) | ASTM D570 | | Thermal | | Accelerated ageing | (120oC for 500 Hrs) | ASTM D2671 | | Tensile Strength | 8 N/mm2 (Mpa) (min.) | ASTM D 638 | | Ultimate Elongation | 250% (Min.) | ASTM D 638 | | Low temperature Flexibility (-40oC for 4 Hrs.) | No Cracking | ASTM D2671 | | Heat Shock (250oC for 30 Min.) | No Cracking or flowing | ESI 09-11 | | Shrink Temperature | 125oC | IEC 216 | | Continuous Temperature limit | -40oC to +105oC | IEC 216 | | Electrical | | Dielectric Strength | 18 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 |
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Clearances with Insulation
| Voltage | Medium wall Tube (GMB) | Heavy Wall Tube (GHB) | UN-Insulated Bus bars | | Ph. To Ph. | Ph. to gr. | Ph. to Ph. | Ph. to gr. | | 12KV | 65 | 75 | 35 | 45 | 120 | | 17.5 KV | 85 | 105 | 55 | 65 | 160 | | 24 KV | 115 | 150 | 70 | 100 | 220 | | 36 KV | 200 | 285 | 140 | 190 | 320 |
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