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    • Home> Products and Services >Product Center>Power Transformer

    6kV&10kV Oil-Immersed Transformer

     
    6kV and 10kV oil-immersed distribution transformers are important equipment in the distribution network and power supply and distribution systems of industrial & mining enterprises. They are widely used in industrial & mining enterprises, agriculture and civil architectures. They are also popular in sites with oil contamination and chemical substances.

    Product introduction



    Working Conditions:
    No.
    Conditions
    Units
    Parameter Values
    1
    Pollution Grade
     
    IV
    2
    Ambient Temperature
    Maximum Daily Temperature
    ℃
    40
    Minimum Daily Temperature
    -45
    Maximum Daily Temperature Difference
    K
    25
    Average Temperature of the Hottest Month
    ℃
    30
    Maximum Annual Average Temperature
    20
    3
    Humidity
    Average Daily Relative Humidity
    %
    ≤95
    Average Monthly Relative Humidity
    ≤90
    4
    Altitude
    m
    1000
    5
    Solar Radiation Intensity
    W/cm2
    0.1
    6
    Maximum Icing Thickness
    mm
    10
    7
    Maximum average wind speed: keeping in good conditions for 10min at 10m from the ground level
    m/s
    35
    8
    Earthquake Resistance
    Horizontal Ground Acceleration
    m/s2
    2
    Safety Coefficient of 3 Since Resonance Cycles
     
    ≥1.67
    9
    Installation Site
     
    Outdoor
    Note 1: Working conditions in high altitude regions (above 1000m) must be adjusted in conformity with Q/GDW 13001-2014 (High Altitude External Insulation Configuration Technical Specification).


    Product Parameters:
    Table 1  6kV & 10kV - 30kV.A ~ 2 500 kV.A, Three-Phase Duplex Windings, No-Load Voltage Regulation, Distribution Transformer (S11 Series)
    Rated Capacity (KV.A)
    Voltage Combination & Tapping Range
    Connection Symbol
    No-Load Loss (kW)
    On-Load Loss (kW)
    No-Load Current (%)
    Short-Circuit Impedance (%)
    High Voltage (kV)
    High Voltage Tapping Range (%)
    Low Voltage (kV)
    30
    6
    6.3
    10
    10.5
    ±2×2.5
    ±5
    0.4
    Dyn11
    Yzn11
    Yyn0
    0.100
    0.630/0.600
    1.5
    4.0
    50
    0.130
    0.910/0.870
    1.3
    63
    0.150
    1.09/1.04
    1.2
    80
    0.480
    1.31/1.25
    1.2
    100
    0.200
    1.58/1.50
    1.1
    125
    0.240
    1.89/1.80
    1.1
    160
    0.280
    2.31/2.20
    1.0
    200
    0.340
    2.73/2.60
    1.0
    250
    0.400
    3.20/3.05
    0.90
    315
    0.480
    3.83/3.65
    0.90
    400
    0.570
    4.52/4.30
    0.80
    500
    0.680
    5.41/5.15
    0.80
    630
    Dyn11
    Yyn0
    0.810
    6.20
    0.60
    4.5
    800
    0.980
    7.50
    0.60
    1 000
    1.15
    10.3
    0.60
    1 250
    1.36
    11.0
    0.50
    1 600
    1.64
    14.0
    0.50
    2 000
    1.94
    18.3
    0.40
    5.0
    2 500
    2.29
    21.2
    0.40
    Note 1: If the rated capacity is 500kV.A or below, the data of “On-Load Loss” on the left of slash (/) is for Dyn11 or Yzn11, on the right for Yyn0.
    Note 2: If transformers’ annual average load rate is between 35% and 40%, using loss values in this Table can obtain the highest operating efficiency. 


    Table 2  6kV & 10kV - 630kV.A ~ 6 300 kV.A, Three-Phase Duplex Windings, No-Load Voltage Regulation, Power Transformer (S11 Series)
    Rated Capacity (KV.A)
    Voltage Combination & Tapping Range
    Connection Symbol
    No-Load Loss (kW)
    On-Load Loss (kW)
    No-Load Current (%)
    Short-Circuit Impedance (%)
    High Voltage (kV)
    High Voltage Tapping Range (%)
    Low Voltage (kV)
    630
    6
    6.3
    10
    10.5
    ±4×2.5
    3
    3.15
    6.3
    Yd11
    Dy11
    0.820
    6.92
    0.60
    5.5
    800
    1.00
    8.46
    0.60
    1 000
    1.18
    9.91
    0.60
    1 250
    1.40
    11.7
    0.50
    1 600
    1.68
    14.1
    0.40
    2 000
    2.01
    16.6
    0.40
    2 500
    2.37
    19.6
    0.40
    3 150
    2.80
    23.0
    0.40
    4 000
    3.15
    6.3
    3.45
    27.3
    0.40
    5 000
    4.10
    31.3
    0.40
    6 300
    4.89
    35.0
    0.40
    Note: If transformers’ annual average load rate is between 35% and 40%, using loss values in this Table can obtain the highest operating efficiency. 


    Table 3  6kV&10kV-200kV.A~2 500 kV.A, Three-Phase Duplex Windings, On-Load Voltage Regulation, Distribution Transformer (SZ11 Series)
    Rated Capacity (KV.A)
    Voltage Combination & Tapping Range
    Connection Symbol
    No-Load Loss (kW)
    On-Load Loss (kW)
    No-Load Current (%)
    Short-Circuit Impedance (%)
    High Voltage (kV)
    High Voltage Tapping Range (%)
    Low Voltage (kV)
    200
    6
    6.3
    10
    10.5
    ±4×2.5
    0.4
    Dyn11
    Yyn0
    0.380
    2.90
    1.0
    4.0
    250
    0.440
    3.42
    0.90
    315
    0.530
    4.10
    0.90
    400
    0.640
    4.95
    0.80
    500
    0.760
    6.89
    0.80
    630
    0.960
    7.26
    0.60
    4.5
    800
    1.12
    8.89
    0.60
    1 000
    1.36
    10.4
    0.60
    1 250
    1.56
    12.3
    0.50
    1 600
    1.92
    14.7
    0.50
    2 000
    2.27
    18.6
    0.40
    5.0
    2 500
    2.68
    21.6
    0.40
    Note: If transformers’ annual average load rate is between 35% and 40%, using loss values in this Table can obtain the highest operating efficiency. 


    Table 4  6kV & 10kV-S12, S13, S14, SH16 Series, No-Load Voltage Regulation, Distribution Transformer, List of No-Load Loss & On-Load Loss
    Rated Capacity (kV.A)
    S12 Series
    S13 Series
    S14 Series
    SH16 Series (Amorphous Alloy)
    No-Load Loss (kW)
    On-Load Loss (kW)
    No-Load Loss (kW)
    On-Load Loss (kW)
    No-Load Loss (kW)
    On-Load Loss (kW)
    No-Load Loss (kW)
    On-Load Loss (kW)
    30
    0.090
    0.630/0.600
    0.080
    0.630/0.600
    0.080
    0.505/0.480
    0.033
    0.565/0.540
    50
    0.120
    0.910/0.870
    0.100
    0.910/0.870
    0.100
    0.730/0.695
    0.043
    0.820/0.785
    63
    0.130
    1.09/1.04
    0.110
    1.09/1.04
    0.110
    0.870/0.830
    0.050
    0.980/0.935
    80
    0.150
    1.31/1.25
    0.130
    1.31/1.25
    0.130
    1.05/1.00
    0.060
    1.18/1.12
    100
    0.170
    1.58/1.50
    0.150
    1.58/1.50
    0.150
    1.26/1.20
    0.075
    1.42/1.35
    125
    0.200
    1.89/1.80
    0.170
    1.89/1.80
    0.170
    1.51/1.44
    0.085
    1.70/1.62
    160
    0.240
    2.31/2.20
    0.200
    2.31/2.20
    0.200
    1.85/1.76
    0.100
    2.08/1.98
    200
    0.280
    2.73/2.60
    0.240
    2.73/2.60
    0.240
    2.18/2.08
    0.120
    2.45/2.34
    250
    0.340
    3.20/3.05
    0.290
    3.20/3.05
    0.290
    2.56/2.44
    0.140
    2.88/2.74
    315
    0.410
    3.83/3.65
    0.340
    3.83/3.65
    0.340
    3.06/2.92
    0.170
    3.44/3.28
    400
    0.490
    4.52/4.30
    0.410
    4.52/4.30
    0.410
    3.61/3.44
    0.200
    4.07/3.87
    500
    0.580
    5.41/5.15
    0.480
    5.41/5.15
    0.480
    4.33/4.12
    0.240
    4.87/4.63
    630
    0.690
    6.20
    0.570
    6.20
    0.570
    4.96
    0.320
    5.58
    800
    0.840
    7.50
    0.700
    7.50
    0.700
    6.00
    0.380
    6.75
    1 000
    0.990
    10.3
    0.830
    10.3
    0.830
    8.24
    0.450
    9.27
    1 250
    1.17
    12.0
    0.970
    12.0
    0.970
    9.60
    0.530
    10.8
    1 600
    1.41
    14.5
    1.17
    14.5
    1.17
    11.6
    0.630
    13.0
    2 000
    1.75
    18.3
    1.55
    18.3
    1.55
    14.6
    0.750
    16.4
    2 500
    2.06
    21.2
    1.83
    21.2
    1.83
    16.9
    0.900
    19.0
    Note: The data of “On-Load Loss” on the left of slash (/) is for Dyn11 or Yzn11, on the right for Yyn0.

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