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High Voltage Insulating Sheet
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We are reckoned in the global market as one of prominent High Voltage Insulating Sheet Manufacturers. Our High Voltage Insulating Sheet is an adhesive coated sheet that augments insulation and safeguards against accidental induced discharge. We manufacture High Voltage Insulating Sheet from premium quality non tracking cross linked polyolefin material that meets the parameters of ANSI C37.20.2.
Specifications :
- Renders flashover protection up to 17.5 K.V.
- Suitable for MV application up to 36KV
Salient Features :
- Rugged construction
- Easy installation (By hot air gun and gas torch)
- Have corrosion resistant properties that prevent bus bar from chemical corrosion induced by salt, acid, alkali, etc.
- UV and weather resistant properties
- High dielectric strength
- When treated with heat, sheet shrinks according to the shape required
- Apt for indoor and outdoor use
- Halogen free
- Flame retardant
Storage :
- Can be stored at temperature up to 50°C. Storage for indefinite time at this temperature does not cause any performance loss.
Apt to insulate :
- Busbar Joint such as busbar tees, elbows, etc.
- Tube and tape connections
Technical Specifications
| Properties | Value | Standard | | Physical | | Tensile Strength | 10 N/mm2 (MPA)(min) | ASTM D638 | | Ultimate Elongation | 300% (Min.) | ASTM D638 | | Water absorption | 0.5 % (max.) | ASTM D570 | | Hardness | 45 ± 10 Shore D | ASTM D2240 | | Thermal | | Accelerated ageing | (120oC for 500 Hrs) | ASTM D2671 | | Tensile Strength | 9 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 |
Clearances with Insulation| Voltage | Medium wall Tube (GMHS) | Heavy Wall Tube (GHHS) | 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 |
Product Selection| For 'T' & 'L' Connection | | Busbar Width (mm) | Cut Size Needed (mm) | No. of Installations (mm) | | 25 | 275 x 225 | 8 | | 50 | 325 x 250 | 6 | | 75 | 400 x 275 | 4 | | 100 | 450 x 325 | 3 | | 150 | 550 x 425 | 2 |
The above table should be used as a guideline only. Please try with one or two joints before adopting final cut size.The busbars are assumed to be insulated to 25mm. from the joint. Cut size should extend minimum of 100mm. on each leg of the joint before shrinking and should overlap existing insulation by 65mm. after shrinking.
Ordering Information| GALA CODE | LENGTH | WIDTH | THICKNESS AFTER RECOVERY | | LS (mm) | WS (mm) | | ADHESIVE (mm) | TOTAL THICKNESS (mm) | | GMHS | 1200 | 430 | 3 | 1.5 | 4.5 | | GMHS | 1200 | 430 | 4 | 1.5 | 5.5 | | VOID FILLING MASTIC | 300 | 60 | - | - | PIECE | | SEALANT MASTIC | 300 | 20 | - | - | PIECE | | TOOL - 1 | BASIC CLAMP AND BRACKET KIT) | | | | KIT | | TOOL - 2 | (EXTENDED CLAMP AND BRACKET KIT) | | | | KIT |
If required, one piece of Red sealing mastic is applied on each leg of the joint and one or two pieces of Black sealing mastic is used
to cover uneven shapes. |
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