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PARAMATER: The physical, machinery and diectric property of
insulating rod shall meet following requirements.
 polyester insulating rod
No.
Item
Unit
880
881
882
883
884
1
Density
g/cm3
>1.80
>1.80
>1.90
>2.00
>2.00
2
Water absorption
%
<0.5
<0.5
<0.15
<0.05
<0.05
3
Tensile strength
Mpa
>500
>600
1200
1200
1200
4
Bending strength
Mpa
>400
>500
1100
1100
1100
5
Bending strength
1452
Mpa
230
230
6
Surface withstand voltage 1min normal
Kv
10
12
7
Boiling experiment in 100h salt water
Kv/1min
12
12
12
8
Leakage current
mA
<1
<1
<0.5
9
Stain test
min
15
15
15
10
Stress corrosion test
h
1mol/1HNO3,316Mpa stress
96
11
Thunder shock withstand voltage
(100KV)
Time
      5
5
12
Volume resistivity
14096h
1010
13
DC breakdown voltage
KV
50
50
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