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S9 33KV oil-immersed Power Transformer.jpg

S9 33KV oil-immersed Power Transformer

The S9 33kV oil-immersed power transformer is a three-phase distribution device featuring a novel insulation structure and high short-circuit withstand capability. Its core is constructed from high-quality cold-rolled silicon steel sheets, and its high-voltage winding utilizes a multi-layer cylindrical oxygen-free copper foil structure. All fasteners are treated to prevent loosening. As a nationally recognized energy-efficient product, it offers low losses and high efficiency, significantly reducing electricity costs and operating expenses.

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    Product Details

    Product Overview‌

    This S9 series oil-immersed distribution transformer, rated at 33kV, is suitable for distribution networks in industrial and mining enterprises, civil buildings, and power systems. Its design utilizes computer electromagnetic calculation and insulation analysis techniques to ensure electromagnetic stability, temperature rise control, and insulation strength, meeting 30-year lifespan requirements.

     

    Features

    1.High efficiency and energy saving: The no-load loss is 3~5 decibels lower than the national standard, and the iron core adopts seven-level temperature control technology, with excellent comprehensive energy efficiency.

    2.Reliable structure: The high-voltage winding adopts a multi-layer cylindrical oxygen-free copper foil structure with strong short-circuit impedance; the fasteners are treated to prevent loosening and resist transportation vibration.

    3.Long-life design: Hybrid insulation system and high-quality components ensure 30 years of maintenance-free operation.

    4.Environmentally friendly and safe: The corrugated oil tank design replaces the oil storage cabinet to prevent oil oxidation and moisture intrusion, eliminating the need for regular oil changes.

     

    Technical parameter

    Rated capacity(KVA)

    Voltage combination

    Connection symbol

    loss(w)

    On-load
    current
    (%)

    Short circuit impedance(%)

    Weight (KG)

    H.v(kv)

    H.V tapping range

    L.V(kV)

    s9 Series

    Oil weight

    Total weight

    load

    No-load Current (%)

    50

    38.5/35/33

    ±5%
    ±2×2.5%                                                    

    0.4

    Yyno
    Dyn11
    Dyn5

    1.27/1.21

    0.21

    2

    6.5

    220

    610

    100

    2.12/2.02

    0.29

    1.8

    250

    810

    125

    2.50/2.38

    0.34

    1.7

    255

    885

    160

    2.97/2.83

    0.36

    1.6

    305

    1040

    200

    3.50/3.33

    0.43

    1.5

    403

    1400

    250

    4.16/3.96

    0.51

    1.4

    412

    1450

    315

    5.01/4.77

    0.61

    1.4

    430

    1600

    400

    6.05/5.76

    0.73

    1.3

    460

    1700

    500

    7.28/6.93

    0.86

    1.2

    525

    2025

    630

    8.28

    1.04

    1.1

    580

    2315

    800

    9.9

    1.23

    1

    645

    2715

    1000

    12.15

    1.44

    1

    745

    3315

    1250

    14.67

    1.76

    0.9

    825

    3730

    1600

    17.55

    2.12

    0.8

    955

    4420