LONGSPER INSULATION TECHNOLOGY (TIANJIN) CO.,LTD.

  • Booth: O9-5


Welcome to visit www.encgroupltd.com for more products.

LONGSPER headquartered in Tianjin,China. Benefits from more than ten years of development, own the advanced technology in industrial management and tremendous wealth of experience in foreign trade was develpoed rapidly.As an Industry-and-trade-combined enterprise which integrated by production,supply and sales.

Brands: Insulating materials,Porcelain Bushings,DDP,Transformer Spare parts,Flexible Laminations,Sleevings,Tapes,Aluminum Foil,Enamelled Aluminum Wire.


 Products

  • TRANSFORMER BUSHING
    We supply transformer bushings for DIN type, EN type, ANSI type .The porcelain can be brown color or grey color. The hardware can be tinning or not tinning coating. We also can supply bushings customerized with your drawings....

  • DIN TYPE 42530&42531

    DT1-250/DT1-630/DT1-1000/DT1-2000/DT1-3150/DT1-4500

    10NF250/20NF250/30NF250

    EN TYPE 50386

    EN1-250/EN1-630/EN1-1000/EN1-2000/EN1-3150

    ANSI TYPE 

    LV 10-15KVA/LV 25KVA/LV 37.5-50KVA/LV 75KVA/LV 100KVA/LV 167-250KVA/LV 333KVA

    HV 95KVBIL/HV 125KVBIL/HV 150KVBIL

  • Diamond Dotted Paper (DDP)
    We supply DDP paper with kraft paper or thermo upgrated base paper.Thickness from 0.05mm-0.50mm with widths from 1220mm/1000mm to narrow strips....

  • Caliper:       (inch)

            (millimeter)

    Unit

    0.002

    0.05

    0.003

    0.08

    0.005

    0.13

    0.007

    0.18

    0.010

    0.25

    0.015

    0.38

    0.020

    0.50

    Thickness tolerance

    %

    ±10

    Width tolerance

    mm

    ±5

    Apparent density

    g/cm3

    0.75-0.95

    0.95-1.05

    Moisture content

    4.0 - 8.0

    PH water extract

    6.0 - 8.0

    Elongation      MD 

                CMD

    ≥2.0

    ≥5.4

    Tear strength    MD

                CMD

    mN

    ≥280

    ≥300

    ≥450

    ≥500

    ≥900

    ≥1000

    ≥1350

    ≥1500

    ≥2000

    ≥2300

    ≥3050

    ≥3500

    ≥4000

    ≥4600

    Conductivity of aqueous extract

    Ms/m

    ≤8.0

    Ash content

    ≤0.7

    ≤1.0

    Coating thickness per side

    mm

    0.006 - 0.012

    Tensile strength   MD

                CMD

    N/mm2

    ≥70

    ≥35

    ≥80

    ≥40

    Dielectric breakdown

    (dry test)

    volts/layer

    ≥500

    ≥750

    ≥1200

    ≥1400

    ≥2100

    ≥3000

    ≥3300

    Bond strength

    Kpa

    ≥400

    ≥450

  • Aluminum Foil for Transformers
    We mainly supply High Voltage Coil- Aluminum Foil /Low Voltage Coil- Aluminum Foil
    Alloy : A1070-O/A1060-O/A1350-O
    Thickness: 0.1-3.0mm
    Width:15-200mm
    ID: 200mm,300mm,400mm,500mm
    OD: Less than 1200mm...

  •                                                                     TECHNICAL DATA FOR TRANSFORMER FOIL
    1 Alloy Grade: 1060
    2 Thermo Treatment “O”
    3 Chemical composation
    Chemical Element  Si Fe Cu Mn Mg Cr Ni Zn Ti Zr AL
    Standard(≤) 0.25 0.35 0.05 0.03 0.03 0.05 0.03 ≥99.6
    4 Mechanical property
    ITEM Tensile Strength MPa Elongation %
    STANDARD  60-95 ≥20
    5 Electrical Performance
    1、Conductivity :≥61%
    2、Resistance(20℃):≤0.02825Ω mm2/m
    3、Edge Burs:≤0.02mm ,edge bur treatment,normally press edge- square edge, round edge can be offered, but the thickness need to thicker than 0.9mm
    4、Size and tolerance: Customerized
    5、Roll Inner Diameter : Width below 600mm,ID:300mm,400mm,500mm ;Width above 600mm,ID400mm,500mm
    6、Roll weight and OD of the Roll :OD≤1200mm,Roll Weight ≤2000KG;
    7、Width above 200mm,paper can be fitted to avoid scratch
    8、Package:Wooden Case or Pallet.

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