Item
|
|
Index |
Result |
Rigidity |
|
70 ± 5 |
68
|
Stress intensity |
MPa
|
≥ 16 |
16.5 |
Extension rate while breaking |
%
|
≥ 250
|
332 |
Tearing strength |
kN /m |
≥ 30 |
35.4 |
Hot air permanent compression set
( compression25% , 125 ℃, 24h ) |
%
|
≤ 35 |
29.5 |
Permanent compression set when immersed in 25# transformer oil
( compression25% , 125 ℃, 168h ) |
%
|
≤ 50 |
41.8 |
Resistance to 25# transformer oil
( 125 ℃, 168h )
|
Size change
%
|
0 ~ +10
|
+9.7
|
|
Rigidity change value
%
|
-8 ~ +2
|
+1
|
Compatiblity with25# transformer oil ( 125 ℃× 168h ), Rubber weight : transformer oil weight=1 : 10
|
Change of transformer oil medium
consumption ratetg δ( 90 ℃) %
|
≤ 1
|
0.93
|