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HTS-H series 10kV&35 kV thermal shrinkable busbar
protective bushing
Major performance indexes of MPG series thermal shrinkable busbar protective bushing
Hardness (Shore A):
＜
80
3
3
Density(kg/m ): 1.15×10
Water absorption(%):
＜
0.5
Full shrinking temperature(
℃
): 130±5
Radial shrinking ratio(%):
＞
50
Axial shrinking ratio(%):
＜
5.0
Tensile strength(Mpa):
＞
12.0
Elongation at break(%):
＞
400
Breakdown strength(kV/mm):
≥
25
14
Volume resistivity(
Ω
.cm):
＞
1×10
Oxygen index :
≥
30
Eccentricity(%):
＜
30
Model
10kV MPG25
10kV MPG30
10kV MPG40
10kV MPG50
10kV MPG60/65
10kV MPG80
10kV MPG100
10kV MPG120
10kV MPG150
10kV MPG180
10kV MPG210
(mm)
Dimension before shrinking
Internal
diameter
Wall
thickness
(mm)
Dimension after shrinking
25±1.0
30±1.0
40±1.0
50±2.0
65±2.0
80±3.0
100±4.0
120±4.0
150±4.0
180±5.0
210±5.0
1.0±0.2
1.0±0.2
1.0±0.2
1.2±0.2
1.2±0.2
1.2±0.3
1.2±0.3
1.2±0.3
1.2±0.3
1.2±0.3
1.2±0.3
10
13
15
20
24
32
40
48
60
70
80
2.2±0.2
2.2±0.2
2.2±0.2
2.5±0.2
2.5±0.2
2.5±0.2
2.5±0.2
2.7±0.3
2.7±0.3
2.7±0.3
2.7±0.3
Applicable
busbar width
(mm)
20~30
30~40
40~50
50~60
60~70
80~100
100~120
150
200
max
max
Internal
diameter
Wall
thickness
System
voltage
(kV)
Ordinary
insulation
distance
(mm)
10
22
35
Comparison between earth and phase distance before and after the use of MPG series
120
220
320
(mm)
(mm)
To the earth Between phase
Insulation distance after using
MPG10 series
Insulation distance after using
MPG35 series
(mm)
(mm)
To the earth
Between phase
80
160
-
70
120
-
50
105
200
40
75
150
Note: Information in the above table is for reference only. The actual data may vary due to the power
distribution system and environment.
35kV MPG30
35kV MPG40
35kV MPG50
35kV MPG60/65
35kV MPG80
35kV MPG100
35kV MPG120
35kV MPG150
35kV MPG180
35kV MPG210
30±1.0
40±1.0
50±2.0
65±2.0
80±3.0
100±4.0
120±4.0
150±4.0
180±5.0
210±5.0
2.0±0.3
2.0±0.3
2.0±0.3
2.0±0.3
2.2±0.3
2.5±0.3
2.5±0.3
2.5±0.3
2.5±0.3
2.5±0.3
13
15
20
24
32
40
48
60
70
80
4.0±0.3
4.0±0.3
4.5±0.3
4.5±0.3
4.5±0.3
4.5±0.3
5.0±0.3
5.0±0.3
5.5±0.3
5.5±0.3
30~40
40~50
50~60
60~70
80~100
100~120
150
200
max
max
Note: The standard length for the bar is 1m; color: red, yellow and green, and other length or special color
can be ordered upon the customers' needs.