Polyester Fiber Wedge, Polyester Glass Fiber Wedge, Polyester Fibre Wedge.Insulation Polyester Wedge,Dry Transformer Wedge,Transformer wedge.
Polyester fiber wedge is made from polyester yarn varnished with epoxy resin heating and pressurizing and curing.With high mechanical and dielectric performance. Widely used in transformers,rectifler and other electrical equipment as insulation material.
Temperature classification:B ,F,H grade.
Normal size:
I-bar: 8*10mm,6*6mm,6*8mm,5*10mm,6*10mm,8*8mm,10*10mm etc.
Riglet: 10*2mm,10*3mm,10*4mm,10*5mm,19*6mm,40*20mm etc.
Corner: :8*8mm,10*10mm,6*6mm etc.
Flat angle: 45*15*5mm,45*15*10mm
We can produce any sizes according client’s request.
Polyester Wedge Test Report
Product Type and Name: H grade Polyester Wedge Standard:GB/T10064-2006
Manufacture:Sanmenxia Kind Ind.Trade Co.,LTD. Test date: 16
Nov.2013
Serial number | Item | Unit | Standard | Result | Remark | ||
1 | surface |
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Smooth surface,no bubble,top no crack,color uniform | qualified |
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2 | size | mm | 10*12*1000 | qualified |
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3 | Water absorbtion rate | % | ≤0.3 | 0.2 |
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4 | Tensile strength | Mpa | ≥235 | 236 |
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5 | Parallel to the layer insulation resistance | normal | Ω | ≥1.0*1010 | -- |
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185°C 24h | ≥1.0*1010 | ||||||
6 |
Surface resistance voltage |
Kv | ≥12 | 16 |
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7 | Thermal stability(180°C 5h) |
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No deformation,no crack,no bubble no significant change of color | qualified |
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8 | Bending strength | Normal temperature | Mpa | 369 | 372 |
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9 | 180°C 5h | 310 | 320 |
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10 | Tensen strength | Mpa | ≥108 | 118 |
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11 | Low temperature resistance |
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No mechanical and electrical property change in -40°C environment | qualified |
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12 | Parallel to the layer breakdown voltage(in 90±2°C transformer oil) | Kv | ≥30 | 36 |
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13 | Scale of burning |
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v-0 | v-0 |
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14 | Long-term heat resistance |
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Inspection instructions and conclusion: qualified |