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S13 Series 10kV Oil Immersed Power Transformer for Outdoor Using
Oil-Immersed Transformer
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S13 Series 10kV Oil Immersed Power Transformer for Outdoor Using

S(B)13-M Series

Product Overview
The S13 series three-phase oil-immersed transformers are high-efficiency energy-saving power transformers, designed and manufactured with a fully sealed corrugated tank structure. Temperature and volume changes of transformer oil caused by load fluctuations and ambient temperature variations are fully compensated by the corrugated tank, featuring a sleek appearance, compact footprint, and remarkable economic benefits. Compared with GB/T 6451 standards, S13-M transformers achieve an average 45% reduction in no-load losses, 35% reduction in load losses, and 30% decrease in operating costs, making it a sustainable choice for critical infrastructure projects requiring high efficiency and long-term durability.

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    product details

    Model Definition

    product-description1-4-2

    Features

    ● Voltage level: 10～35/0.4kV.
    ● Capacity: 30～3150kVA.
    ● Extended Lifespan & Maintenance-Free Operation:
    Fully sealed design with bolted or welded tank cover-to-frame connections eliminates oil-air contact, preventing moisture ingress and significantly reducing insulation aging. This extends service life while enabling maintenance-free operation.
    ● Compact Design & Low Noise:
    Utilizes advanced materials and manufacturing techniques to minimize operational noise. The oil conservator-free structure reduces overall height compared to conventional units. Lifetime oil retention eliminates the need for mid-life oil changes, enhancing in-service safety and reliability.
    ● Space-Efficient Corrugated Tank:
    The S11 series features corrugated tank walls that provide natural cooling through thermal expansion and contraction. This design optimizes footprint while maintaining aesthetic appeal.
    ● Coreless Maintenance & Oil Purity:
    Vacuum-filtered oil injection during assembly removes all moisture, ensuring long-term dielectric integrity. Hermetic sealing prevents oxygen ingress, eliminating oxidation risks and preserving insulation performance throughout the transformer’s lifecycle.
    • product-description2
    • product-description3
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    Range of application

    Widely applicable to high-rise buildings, commercial centers, subways, airports, railway stations, industrial and mining enterprises, drilling platforms, and oil production platforms. Specifically suitable for locations with strict fire-prevention requirements (such as flammable/explosive zones) and harsh environments. Also ideal for power supply and lighting in residential areas, commercial streets, industrial sites, and rural communities.

    Technical specifications

    Rated capacity (kVA)

    Rated voltage

    Vector group

    No-load loss (W)

    Load loss (W)

    No-load current (%)

    Impedance voltage (%)

    HV (kV)

    Tapping range (%)

    LV (kV)

    11#

    13#

    20#

    22#

    11/13#

    20#

    22#

    11#

    13#

    20#

    22#

    30

    6 6.3 6.6 10 10.5 11

    ±5 or ±2×2.5

    0.4

    Dyn11 or Yyn0

    100

    80

    70

    65

    630/600

    505/480

    455/430

    0.3

    0.3

    0.24

    0.23

    4

    50

    130

    100

    90

    80

    910/870

    730/695

    655/625

    0.24

    0.23

    0.24

    0.23

    80

    180

    130

    115

    105

    1310/1250

    1050/1000

    945/900

    0.22

    0.18

    0.21

    0.20

    100

    200

    150

    135

    120

    1580/1500

    1265/1200

    1140/1080

    0.21

    0.16

    0.21

    0.20

    125

    240

    170

    150

    135

    1890/1800

    1510/1440

    1360/1295

    0.2

    0.15

    0.19

    0.18

    160

    280

    200

    180

    160

    2310/2200

    1850/1760

    1665/1585

    0.19

    0.14

    0.18

    0.17

    200

    340

    240

    215

    190

    2730/2600

    2185/2080

    1970/1870

    0.18

    0.12

    017

    0.16

    250

    400

    290

    260

    230

    3200/3050

    2560/2440

    2300/2195

    0.16

    0.12

    0.14

    0.13

    315

    480

    340

    305

    270

    3830/3650

    3065/2920

    2760/2630

    0.16

    0.11

    0.13

    0.12

    400

    570

    410

    370

    330

    4520/4300

    3615/3440

    3250/3095

    0.16

    0.11

    0.13

    0.12

    500

    680

    480

    430

    385

    5410/5150

    4330/4120

    3900/3710

    0.16

    0.1

    0.12

    0.11

    630

    810

    570

    510

    460

    6200

    4960

    4460

    0.15

    0.09

    0.12

    0.11

    4.5

    800

    980

    700

    630

    560

    7500

    6000

    5400

    0.15

    0.09

    0.1

    0.1

    1000

    1150

    830

    745

    665

    10300

    8240

    7415

    0.14

    0.09

    0.1

    0.09

    1250

    1360

    970

    870

    780

    12000

    9600

    8640

    0.13

    0.08

    0.1

    0.09

    1600

    1640

    1170

    1050

    940

    14500

    11600

    10440

    0.12

    0.07

    0.09

    0.08

    2000

    1940

    1360

    1225

    1085

    18300

    14640

    13180

    0.11

    0.09

    0.09

    0.08

    5.5

    2500

    2290

    1600

    1440

    1280

    21200

    14840

    13360

    0.11

    0.08

    0.09

    0.08

    3150

    2750

    2180

    24100

    0.11

    0.08

    6
    Note: 
    1. The load loss with two values in the table, the value on the left is applicable to the Dyn11 vector group, and the value on the right is applicable to the Yyn0 vector group.
    2. The above data is subject to change due to technical improvement.

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