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
Smooth surface,no bubble,top no crack,color uniform
qualified
2
size
mm
10*12*1000
qualified
3
Water absorbtion rate
%
≤0.3
0.2
4
Tensile strength
Mpa
≥235
236
5
Parallel to the layer insulation resistance
normal
Ω
≥1.0*1010
--
185°C 24h
≥1.0*1010
6
Surface resistance voltage
Kv
≥12
16
7
Thermal stability(180°C 5h)
No deformation,no crack,no bubble no significant change of color
qualified
8
Bending strength
Normal temperature
Mpa
369
372
9
180°C 5h
310
320
10
Tensen strength
Mpa
≥108
118
11
Low temperature resistance
No mechanical and electrical property change in -40°C environment
qualified
12
Parallel to the layer breakdown voltage(in 90±2°C transformer oil)
Kv
≥30
36
13
Scale of burning
v-0
v-0
14
Long-term heat resistance
Inspection instructions and conclusion:
qualified
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