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    BAODING JIKAI POWER EQUIPMENT CO., LTD.

    Bus-bar protective bushing

    Bus-bar protective bushing

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    Product Overview :
    Radiated cross linked heat shrinkable bus bar insulating material is good for the high& low switch box. It can increase the insulation level, decrease the box's volume, and will prevent the sewage lightning, the short circuit, flashover Heat shdnkabte bus bar insulating material was compound by polyolefins and other additive though mixing, pelletizing, molding, high electron energy radiating and extending. It can be satisfactory for all the insulating requirements as the superior insulating characters, heat stability, flame resistance, low halogen low smoke, softness and no cracking


    The Specification of 10kV Bus-bar Insulating Heat-shrinkable Tube:

    Model specification

    Product

    After contraction

    Correspondence bus-bar specifications Wall thickness after contracting at bus-bar
    Perimeter Wall thickness Perimeter Wall thickness
    MPG-10-20/10 63 1.2±0.2 31 2.2±0.2 30 x 3 1.8±0.2
    30/15 95 1.2±0.2 47 2.2±0.2 30 x 3 1.8±0.2
    40/20 125 1.2±0.2 62 2.2±0.2 40 x 4 1.8±0.2
    50/25 157 1.2±0.2 78 2.2±0.2 50 x 5 1.8±0.2
    65/30 204 1.4±0.2 94 2.5±0.2 60 x 6 2.0±0.2
    80/40 250 1.4±0.2 125 2.5±0.2 80 x 8 2.0±0.2
    100/50 314 1.4±0.2 157 2.5±0.2 100 x 10 2.0±0.2
    120/60 376 1.4±0.2 188 2.5±0.2 120 x 10 2.0±0.2
    150/75 470 1.4±0.2 235 2.5±0.2 Be used for extra bus-bar

    Representation of the Model and Specification:

    Techical Parameter of the Bus-bar Shrinkable Insulating Material:

    Test project

    Measured value Test method
    Breakdown strength >20kV/mm GB311
    Power frequency withstand voltage 42kV,1min GB1408
    Lightning impulse 75kV,peak GB1408
    Moving-thermal stability test 4s,31.5kA 80kApeak GB2706
    Volume resistivity 1.0 x 1014Ω.cm GB1044
    Dielectric constant >=2.5 GB1049
    Oxygen index >=30 GB1406
    Wester absorption <=0.1% GB1034
    Low-temperature flexibility -55℃±2℃ 4h (Through)  
    Corrosion test 23℃±2℃ humidity 95%4h (Through)  
    Stretch strength >=14.0Mpa GB1040
    Elonation at break >=400% GB1040
    Operating temperature range -50℃-130℃  
    Acceterated aging test 168℃ 7days Through GB1040


    The Specification of 35kV Bus-bar Insulating Heat-shrinkable Tube:

    Model specification

    Product

    After contraction

    Correspondence bus-bar specifications Wall thickness after contracting at bus-bar
    Perimeter Wall thickness Perimeter Wall thickness
    MPG-1-20/10 63 2.0±0.3 31 4.0±0.3 30 x 3 3.5±0.3
    30/15 95 2.0±0.3 47 4.0±0.3 30 x 3 3.5±0.3
    40/20 125 2.0±0.3 62 4.0±0.3 40 x 4 3.5±0.3
    50/25 157 2.0±0.3 78 4.5±0.3 50 x 5 4.0±0.3
    65/30 204 2.0±0.3 94 4.5±0.3 60 x 6 4.0±0.3
    80/40 250 2.5±0.3 125 5.0±0.3 80 x 8 4.5±0.3
    100/50 314 2.5±0.3 157 5.0±0.3 100 x 10 4.5±0.3
    120/60 376 2.5±0.3 188 5.0±0.3 120 x 10 4.5±0.3
    150/75 470 2.5±0.3 235 5.0±0.3 Be used for extra bus-bar


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