Insulation laminated products

Product Features:

Products type: Grade F, H, C of heat resistance grade
Size (mm):1000*2000
Thickness (mm)0.2---50
Voltage Level(kv):10—35

 

Technical index of laminated glass cloth

 

Item
Property Unit Requirement
3240 3241 3250 350 341 3253 352
1
Flexural strength
perpendicular to layers
Mpa ≥340 ≥340 ≥196 ≥300 ≥340
≥170
150℃
≥400
≥280
180℃
≥400
2
Impact strength parallel to layers
KJ/㎡ ≥33 ≥133 ≥78.4 ≥150 ≥147
无缺口
≥50 ≥50
3 吸水性Moisture content mg 17-73 ≤0.4% 17-73 25-150
4 Electric strength
 perpendicular to layer
(in 90℃±2℃ 25# transformer oil)
Kv/mm 10.2-16.9 10-12 ≥12 ≥10 10.2-16.9 ≥10
5 Voltage resistance
perpendicular to layer(in
90℃±2℃ transformer oil)
Kv ≥9 ≥9 ≥9 9.0-31 ≥9
6 Breakdown
voltage parallel to layers(in
90℃±2℃  transformer oil)
Kv ≥35 ≥35 ≥35 ≥30 35
(1min)
7 Dielectric constant
power frequency
≤5.5 ≥5 ≥5.5 ≥5.5 ≤5.5 ≤5.5
(1MHz)
≥5.5
8
Dielectric loss factor(power frequency)
≤0.04 ≤0.04 ≤0.03
(1MHz)
9

Surface resistivity
Ω ≥1.0
×10
13
1.0×103
1.0×10
6
≥1013 ≥1.0
×10
13
10 Volume resistivity Norma MΩ.m
≥1.0
×10
5
≥1.0
×10
5
≥1.0
×10
5
≥1.0
×10
5
≥1.0
×10
4
≥1.0
×10
4
After immersion ≥1.0
×10
5
≥1.0
×10
3
≥1.0
×10
3
≥1.0
×10
3
≥1.0
×10
2
≥1.0
×10
4