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energy-efficient transformers,oil cooled transformer features,high voltage power transformer

High-Quality S11 Oil Immersed Power Transformer from China Suppliers and Factory for Reliable Electrical Performance

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Premium Quality Transformer Components
◇ Our transformers utilize oxygen-free copper wire known for its low resistivity, treated through advanced surface processes to ensure a smooth finish without burrs or sharp edges. This innovation minimizes load loss and enhances the electrical reliability of the transformer, making us a trusted choice among China suppliers.
◇ We carefully select high-quality silicon steel sheets designed to significantly reduce no-load losses, reflecting our commitment to superior performance standards consistent with leading factory practices.
◇ Constructed from top-grade laminated wood insulation, our transformers exhibit exceptional durability without cracking or shifting, even under short-circuit conditions.
◇ Our use of deep-filtered transformer oil, boasting low levels of water, gas, and impurities, contributes to reliable operation, solidifying our reputation as a leading supplier in the industry.
◇ High-quality rubber sealing materials are employed to prevent aging and leakage, ensuring longevity and safety.
◇ All raw materials undergo rigorous quality inspections, with manufacturers adhering to national IS09000 standards, reinforcing our commitment to excellence as a preferred factory in China.

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    Product Detail

    Advanced technology and good performance

    • ◇ S11 Series products in S9 Based on the series, the no-load loss is reduced by an average of 30%; the no-load current ratio S9 70-85% decrease;
    • ◇ Average temperature rise reduced by 10K, Product life span more than doubled;
    • ◇ The product operating noise is reduced by an average of 2-4 decibels.

    Fully sealed(M)

    Select S11(M) First M The oil tank adopts a fully sealed structure. Compared with the ordinary oil diffused transformer, the fully sealed distribution transformer eliminates the oil storage cabinet and the corrugated fins of the oil tank replace the oil pipe. As a cooling and heat dissipation element, the corrugated oil tank is manufactured from high-quality cold-rolled thin plates on a dedicated production line. The corrugated fins can expand and contract with the expansion and contraction of the transformer oil volume, thereby isolating the transformer from the atmosphere, preventing and slowing down oil degradation and insulation moisture, enhancing operational reliability, and requiring maintenance for normal operation.

    Transformer model meaning

    product-description1

    Normal operating conditions of transformer

    • ◇ Altitude not exceeding 1000m;
    • ◇ Ambient temperature: Maximum temperature +40℃; Average temperature in the hottest month +30℃;
    • ◇ The highest annual average temperature is +20℃; the lowest outdoor temperature is -25℃.

    Special conditions for use of transformers

    • ◇ Altitude over 1000m;
    • ◇ Ambient temperature: Maximum temperature +40℃; Minimum temperature -45℃;
    • * Please specify when ordering

    Transformer meets the standards

    GB 1094.1-1996
    GB 1094.3-2003
    GB/T6451-1999    		 GB1094.2-1996
    GB1094.5-2003
    GB/T 7595-1987    		 JB/T10088-2004
    GB/T 10237-1988
    JB/T 3837-1998

    Overall dimensions and installation dimensions

    product-description23

    10kV class S11-M Series oil immersed distribution transformer technical parameters

    Rated
    capacitance    		 Voltage combination (kV) Connection
    method    		 Loss (kW) No-load
    electricity
    flow(%)    		 Impedance
    Pressure
    (%)    		 weight(Kg) Dimensions(mm)
    (Length L×Width
    B×Height H)    		 gauge
    Vertical/
    Horizontal
    high
    pressure    		 Low
    pressure    		 No load load
    (75℃)    		 Heavy Oil weight Total weight
    30 11
    10.5
    10
    6.3
    6    		 0.4 Yy115
    or Dyn11    		 0.1 0.6 2.1 4 185 70 325 750x490x970 450/350
    50 0.13 0.87 2 255 85 420 770x550x1030 450/350
    63 0.15 1.04 1.9 280 95 480 800x600x1040 450/380
    80 0.18 1.25 1.8 320 100 535 810x680x1060 450/430
    100 0.2 1.5 1.6 380 110 615 820x680x1100 550/450
    125 0.24 1.8 1.5 440 115 690 1070x700x1150 550/470
    160 0.28 2.2 1.4 510 130 800 1120x700x1220 550/500
    200 0.34 2.6 1.3 610 150 935 1160x720x1255 550/520
    250 0.4 3.05 1.2 720 190 1110 1200x760x1310 650/550
    315 0.48 3.65 1.1 835 200 1270 1210x780x1320 650/550
    400 0.57 4.3 1.0 1010 240 1540 1340x880x1360 650/550
    500 0.68 5.15 1.0 1170 260 1765 1360x890x1430 750/600
    630 0.81 6.2 0.9 4.5 1375 320 2095 1560x1020x1410 850/660
    800 0.98 7.5 0.8 1620 365 2470 1640x1060x1500 850/660
    1000 1.15 10.3 0.7 1780 405 2780 1720x1160x1540 850/660
    1250 1.36 12 0.6 2065 560 3395 1790x1190x1740 850/660
    1600 1.64 14.5 0.6 2470 650 3990 1830x1210x1850 850/700
    2000 1.94 18.3 0.6 2700 695 4460 2190x1900x1950 820/820
    2500 2.29 21.2 0.6 3230 870 5330 2240x1940x1980 1070/1070

    10kV class S11-M Technical parameters of series oil-immersed power transformers

    Rated
    capacitance    		 Voltage combination (kV) Connection
    method    		 Loss (kW) No-load
    electricity
    flow(%)    		 Impedance
    Pressure
    (%)    		 weight(Kg) Dimensions(mm)
    (Length L×Width
    B×Height H)    		 gauge
    Vertical/
    Horizontal
    high
    pressure    		 Low
    pressure    		 No load load
    (75℃)    		 Heavy Oil weight Total weight
    200 11
    10.5
    10
    6.3
    6    		 6.3
    6
    3.15    		 Ydn11 0.34 3.15 1.6 4.5 650 160 1000 1180x740x1270 660/660
    250 0.4 3.6 1.7 770 200 1190 1230x780x1340
    315 0.48 4.3 1.6 900 215 1360 1260x810x1370
    400 0.57 5.2 1.5 1080 260 1650 1380x900x1390
    500 0.68 6.2 1.4 1250 280 1890 1400x920x1450
    630 0.81 7.3 1.3 5.5 1470 340 2245 1580x1020x1430 820/820
    800 0.98 8.9 1.2 1735 385 2645 1665x1070x1520
    1000 1.15 10.5 1.1 1910 430 2980 1740x1160x1550
    1250 1.36 12.42 1.0 2210 590 3640 1820x1210x1740
    1600 1.64 14.85 0.6 2640 680 4270 1840x1240x1860
    2000 1.96 17.82 0.9 2890 725 4775 2210x1920x1970
    2500 2.31 20.7 0.8 3460 910 8710 2260x1970x1995 1070/1070
    3150 2.73 24.3 0.8 4230 1350 7085 2320x2280x2360
    4000 3.36 28.8 0.7 5025 1675 8150 2460x2480x2475
    5000 3.99 33 0.7 6020 1940 9610 2575x2640x2590
    6300 4.76 36.9 0.6 8125 2550 12660 2640x2820x2810
    8000 6.52 40.5 0.55 9620 2780 15100 2710x2840x3040 1475/1475
    10000 7.70 47.7 0.55 11660 3070 17480 2850x2880x265

    Frequently Asked Questions (FAQ)

    QWhat are the main performance advantages of the S11 series over the S9 series?

    Compared to the S9 series, the S11 series products reduce no-load loss by an average of 30%, decrease the no-load current ratio by 70-85%, lower the average temperature rise by 10K (which more than doubles the product lifespan), and reduce operating noise by an average of 2-4 decibels.

    QHow does the fully sealed structure of the S11(M) transformer benefit its operation?

    The fully sealed structure eliminates the traditional oil storage cabinet, replacing the oil pipe with corrugated fins on the oil tank. These corrugated fins expand and contract with the transformer oil volume, isolating the transformer from the atmosphere. This prevents oil degradation and insulation moisture, enhances operational reliability, and eliminates the need for routine maintenance during normal operation.

    QWhat are the standard ambient conditions required for operating these transformers?

    Standard operating conditions include an altitude not exceeding 1000m, a maximum ambient temperature of +40℃, an average temperature in the hottest month of +30℃, a highest annual average temperature of +20℃, and a lowest outdoor temperature of -25℃.

    QCan these transformers be customized for special environmental conditions?

    Yes, special designs are available for conditions such as altitudes exceeding 1000m and ambient temperatures ranging from a minimum of -45℃ to a maximum of +40℃. Please specify these requirements when placing your order.

    QWhich manufacturing and testing standards do these transformers comply with?

    These transformers comply with several national standards, including GB 1094.1-1996, GB 1094.2-1996, GB 1094.3-2003, GB 1094.5-2003, GB/T 6451-1999, GB/T 7595-1987, JB/T 10088-2004, GB/T 10237-1988, and JB/T 3837-1998.

    QWhat connection methods are available for the 10kV class S11-M series?

    Depending on the specific technical parameters and application requirements, the connection methods typically include Yy115, Dyn11, or Ydn11 configurations.

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