H class. Features: high temperature resistant, good mechanical and electrical performance. Applicable to H class motors and electrical equipment as an insulation part.
Form I： Nominal Thickness and Allowable ToleranceNominal Thickness
mm
Allowable Tolerance
mm
Nominal Thickness
mm
Allowable Tolerance
mm
0.2
±0.07
5.0
±0.48
0.3
±0.07
5.5
±0.48
0.4
–
6.0
±0.58
0.5
±0.14
6.5
±0.58
0.6
—
8.0
±0.68
0.8
±0.14
10.0
±0.80
1.0
±0.22
12.0
±1.00
1.2
±0.22
14.0
±1.00
1.5
±0.22
16.0
±1.30
1.6
—
20.0
±1.30
1.8
±0.28
25.0
±1.50
2.0
±0.28
30.0
±1.50
2.5
±0.33
35.0
±2.00
3.0
±0.33
40.0
±2.00
3.5
±0.33
45.0
±2.20
4.0
±0.38
50.0
±2.20
4.5
±0.38
Form II： Properties
No.
Property
Unit
Value
1
Bending strength across layers
Normal Condition
MPa
≥400
150±2℃
≥200
2
Impulse strength along layers
(Beam method)
kJ/m2
≥50(vertical)
3
Withstand voltage vertical to layers，（in 90℃±2℃ oil）
MV/m
See Form III
4
Dielectric loss factor
below 48Hz~62Hz–
≤0.05
below 1MHz
–
Density
g/cm3
≥1.70
5
Withstand voltage parallet to layers
kV
≥30
6
Insulation resistance parallet to layers
Normal condition
MW
≥1.0×104
Absorbed in water
for 24h
≥1.0×102
7
Volume resistivity
Normal condition
MW.m
≥1.0×105
Absorbed in water
for 24h
≥1.0×103
180±2℃
≥1.0×103
8
Surface resistivity
Normal condition
MW
≥1.0×106
Absorbed in water
for 24h
≥1.0×104
180±2℃
≥1.0×104
9
Temperature Index (TI)
–
≥180
Form III： Electrical strength Vertical to Layers
Thickness
mm
Value
MV/mThickness
mmValue
MV/m
0.5
≥22
1.8
≥20
0.6
≥22
2.0
≥20
0.7
≥22
2.2
≥18
0.8
≥22
2.4
≥18
0.9
≥22
2.5
≥18
1.0
≥22
2.6
≥18
1.2
≥20
2.8
≥18
1.4
≥20
3.0以上
≥18
1.6
≥20
