HD-7 Series 1 kV Thermal Shrinkable Busbar Protective Bushing
Principle of thermal shrinkage
Under the high energy radiation the linear polymer can form network cross-linkde structure.The mechanical strength,temperature,chemical solution and ageing resistance of cross-linked polymer are greatly improved, especially the acid and alkali resistance.
Safety standard：
UL224VW-1 C-UL CSA C22.20FT
Color
Black,red,blue,white,yellow,green and transparent. And other colors are subject to the clients’needs.
Major performance indexes
|
Test item |
Measurement methods |
Result |
|
Tensile strength |
|
≥12Mpa |
|
Elongation at break |
≥400% |
|
|
Tensile strength after ageing |
7days after laying in 158℃ oven |
≥10Mpa |
|
Elongation at break after ageing |
≥300% |
|
|
Thermal distortion test |
131℃ ,1hour |
≤25% |
|
Thermal shock test |
250℃ ,4hour |
Non-fracture |
|
Flexibility test |
7days ,158℃ oven |
Non-fracture ,no permanent distortion |
|
Copper corrosion test |
7days ,158℃ oven |
No corrosion |
|
Volume resistivity coefficient |
|
≥1014Ω.cm |
|
Insulation test |
≥2.5KV Non-breakdown ,60 seconds |
|
|
Power-frequency voltage resistance |
≥12KV |
|
|
Breakdown strength |
≥25KV/mm |
|
|
Insulation test after ageing |
7days after laying in 158℃ oven |
≥2.5KV Non-breakdown ,60 seconds |
|
Power-frequency voltage resistance after ageing |
≥12KV |
|
|
Bending test at low temperature |
-30℃ ,1hour |
Non-fracture |
|
Longitudinal shrinking ratio |
200℃,3min shrink in oven |
±10% |
|
Eccentricity |
|
≤30% |
|
Flame retardation |
VW-1 |
|
|
Full shrinking temperature |
100℃(3min) |
1KV MPG application
|
Specification |
Applicable busbar width (mm) |
Dimension before shrinking(mm) |
Dimension after shrinking (mm) |
Standard packaging |
Application |
||
|
Internal diameter |
Wall thickness |
Internal diameter |
Wall thickness |
||||
|
1KV MPG 30 |
20～30 |
30.2±0.8 |
0.45±0.15 |
14.7±1.0 |
0.9±0.2 |
50 |
16～29 |
|
1KV MPG 35 |
30～40 |
35.2±0.8 |
0.50±0.15 |
17.3±1.0 |
1.0±0.2 |
50 |
18～34 |
|
1KV MPG 40 |
40～50 |
40.0±1.0 |
0.50±0.15 |
19.8±1.0 |
1.0±0.2 |
50 |
21～39 |
|
1KV MPG 50 |
50～60 |
50.0±1.0 |
0.50±0.15 |
24.8±1.0 |
1.0±0.2 |
50 |
26～49 |
|
1KV MPG 60 |
60～70 |
60.0±1.0 |
0.65±0.15 |
29.8±1.0 |
1.1±0.2 |
25 |
35～55 |
|
1KV MPG 70 |
80～90 |
70.0±1.0 |
0.65±0.15 |
34.0±2.0 |
1.1±0.2 |
25 |
40～65 |
|
1KV MPG 80 |
90～100 |
80.0±1.0 |
0.65±0.20 |
39.0±2.0 |
1.2±0.2 |
25 |
45～75 |
|
1KV MPG 90 |
120 |
90.0±1.0 |
0.65±0.20 |
44.0±2.0 |
1.2±0.2 |
25 |
50～88 |
|
1KV MPG 100 |
140 |
100.0±2.0 |
0.65±0.20 |
49.0±2.0 |
1.3±0.2 |
25 |
55～95 |
|
1KV MPG 120 |
180 |
120.0±2.0 |
0.80±0.20 |
59.0±2.0 |
1.4±0.2 |
25 |
65～115 |
|
1KV MPG 150 |
240 |
150.0±2.0 |
0.80±0.20 |
74.0±2.0 |
1.4±0.2 |
25 |
80～145 |
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