High-temperature resistant high overload oil-immersed transformer

Features
  • Strong overload capacity: undertake the overload (6h 1.5 times, 3h 1.75 times and 1h 2 times) based on rated temperature rise without influencing the service life.
  • Overload without service life loss: with the only DuPont Nomex T910 insulating paper certified by UL, the B-level insulation system and higher temperature rise limit, while the insulation system of ordinary transformer is A level.
  • Safe performance with high reliability: the ignition point and flash point of high overload transformer oil imported from the United States are much higher than that of ordinary transformer oil, and it has higher safety performance under high temperature.
  • Superior comprehensive economic operation benefits: the high overload transformer has higher comprehensive economic benefits in using area.
  • The performance level is consistent with that of ordinary transformer: with the same parameters as that of ordinary transformer, i.e., the transformer can achieve high overload capacity without affecting other electrical performances.
Applicable Place
  • Be applicable to the distribution area with low annual average load rate, large load peak-valley difference and substantial load increase in short time during spring festival and busy farming season.

Product Details

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  • Model Description


  • Features
    • Strong overload capacity: undertake the overload (6h 1.5 times, 3h 1.75 times and 1h 2 times) based on rated temperature rise without influencing the service life.
    • Overload without service life loss: with the only DuPont Nomex T910 insulating paper certified by UL, the B-level insulation system and higher temperature rise limit, while the insulation system of ordinary transformer is A level.
    • Safe performance with high reliability: the ignition point and flash point of high overload transformer oil imported from the United States are much higher than that of ordinary transformer oil, and it has higher safety performance under high temperature.
    • Superior comprehensive economic operation benefits: the high overload transformer has higher comprehensive economic benefits in using area.
    • The performance level is consistent with that of ordinary transformer: with the same parameters as that of ordinary transformer, i.e., the transformer can achieve high overload capacity without affecting other electrical performances.
    • Conditions of Use
    • Indoors or outdoors with the elevation of less than 1,000m
    • Maximum ambient temperature: +40℃, maximum daily mean temperature: +30℃
    • Maximum annual average temperature: +20℃, minimum temperature: -25℃
    • Transformer for special conditions can be provided according to the user's requirements


  • Technical Parameters


  • S/N

    Item

    Standard parameters list

    Model

    S13 high overload distribution transformer

    1

    Rated voltage

    10/ 0.4 kV

    2

    High-voltage phases

    Three-phase

    3

    Low-voltage phases

    Three-phase four-wire

    4

    Grade mark of connection group

    Dyn11

    5

    Core structure

    Laminated/coiled core

    6

    Insulation endurance class

    Level B/F

    7

    Rated capacity kVA

    50

    100

    200

    315

    400

    500

    630

    8

    High-voltage tapping range (%)

    ±2×2.5

    9

    Rated frequency (Hz)

    50

    10

    No-load loss (W)

    100

    150

    240

    340

    410

    480

    570

    11

    Load loss (W)

    910

    1580

    2730

    3830

    4520

    5410

    6200

    12

    Total losses (W)

    1010

    1730

    2970

    4170

    4930

    5890

    6770

    13

    No-load current (%)

    1.3

    1.1

    1.0

    0.9

    0.8

    0.8

    0.6

    14

    Short-circuit impedance (%)

    4

    4

    4

    4

    4

    4

    4.5

    15

    Noise level (sound power level) (dB)

    50

    52

    56

    58

    58

    59

    59

    16

    Noise level (sound pressure level) (dB)

    41

    41

    42

    44

    44

    46

    47



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