HD-7 Series 10kV & 35kV Thermal Shrinkable Busbar Protective Bushing
Major performance indexes of MPG series thermal shrinkable busbar protective bushing
|
Item |
Index |
|
Hardness (Shore A ) |
＜80 |
|
Density (kg/m3) |
1.15x103 |
|
Water-absorbing rate (%) |
＜0.5 |
|
Full shrinking temperature (℃) |
130±5 |
|
Radial shrinking ratio (%) |
＞50 |
|
Axial shrinking ratio (%) |
＜10 |
|
Tensile strength(Mpa) |
＞12 |
|
Crack elongation (%) |
＞400 |
|
Breakdown strength (kV/mm) |
≥25 |
|
Volume resistivity(Ω.cm) |
＞1x1014 |
|
Cxygen index |
≥30 |
|
Eccentricity (%) |
30 |
Comparison between earth and phase distance before and after the use of MPG series
|
System voltage |
Ordinary insulation |
Insulation distance after using PG10 series |
Insulation distance after using PG10 series |
||
|
To the earth (mm) |
Between phase (mm) |
To the earth (mm) |
Between phase (mm) |
||
|
10 |
120 |
80 |
70 |
50 |
40 |
|
22 |
220 |
160 |
120 |
105 |
75 |
|
35 |
320 |
- |
- |
200 |
150 |
Note：Information in the above table is for reference only. The actual data may vary due to the power distribution system and environment.
Application of 10kV MPG
|
Specification |
Applicable busbar |
Dimension before shrinking(mm) |
Dimension after shrinking (mm) |
||
|
Internal diameter |
Wall thickness |
Internal diameter |
Wall thickness |
||
|
10kV MPG15 |
10～15 |
15±1 |
0.8±0.2 |
6 |
1.6±0.2 |
|
10kV MPG20 |
12～18 |
20±1 |
0.8±0.2 |
8 |
1.6±0.2 |
|
10kV MPG25 |
20～30 |
25±1 |
1.0±0.2 |
10 |
2.0±0.2 |
|
10kV MPG30 |
30～40 |
30±1 |
1.0±0.2 |
13 |
2.0±0.2 |
|
10kV MPG40 |
40～50 |
40±1 |
1.0±0.2 |
15 |
2.2±0.2 |
|
10kV MPG50 |
50～60 |
50±2 |
1.2±0.2 |
20 |
2.2±0.2 |
|
10kV MPG60/65 |
60～70 |
65±2 |
1.2±0.2 |
24 |
2.5±0.2 |
|
10kV MPG80 |
80～100 |
80±3 |
1.2±0.3 |
32 |
2.5±0.2 |
|
10kV MPG100 |
100～120 |
100±4 |
1.2±0.3 |
40 |
2.5±0.2 |
|
10kV MPG120 |
150 |
120±4 |
1.2±0.3 |
48 |
2.7±0.3 |
|
10kV MPG150 |
200 |
150±4 |
1.2±0.3 |
60 |
2.7±0.3 |
|
10kV MPG180 |
max |
180±5 |
1.2±0.3 |
70 |
2.7±0.3 |
|
10kV MPG210 |
max |
210±5 |
1.2±0.3 |
80 |
2.7±0.3 |
Application of 35kV MPG
|
Specification |
Applicable busbar |
Dimension before shrinking(mm) |
Dimension after shrinking (mm) |
||
|
Internal diameter |
Wall thickness |
Internal diameter |
Wall thickness |
||
|
35kV MPG30 |
30～40 |
30±2 |
2.0±0.3 |
13 |
3.5±0.3 |
|
35kV MPG40 |
40～50 |
40±2 |
2.0±0.3 |
15 |
3.5±0.3 |
|
35kV MPG50 |
50～60 |
50±2 |
2.0±0.3 |
20 |
4.0±0.3 |
|
35kV MPG60/65 |
60～70 |
65±2 |
2.0±0.3 |
24 |
4.0±0.3 |
|
35kV MPG80 |
80～100 |
80±3 |
2.2±0.3 |
32 |
4.0±0.3 |
|
35kV MPG100 |
100～120 |
100±4 |
2.5±0.3 |
40 |
4.0±0.3 |
|
35kV MPG120 |
150 |
120±4 |
2.5±0.3 |
48 |
4.5±0.3 |
|
35kV MPG150 |
200 |
150±4 |
2.5±0.3 |
60 |
4.5±0.3 |
|
35kV MPG180 |
max |
180±5 |
2.5±0.3 |
70 |
4.5±0.3 |
|
35kV MPG210 |
max |
210±5 |
2.5±0.3 |
80 |
4.5±0.3 |
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