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    SCB Epoxy Resin Pouring Dry-Type Transformer


    SCB epoxy resin pouring dry-type transformer is manufactured in conformity with IEC60726 standards (applicable International Electrotechnical Commission standards), GB6450 standards and GB/T10228 standards (applicable state standards of the People's Republic of China). Frequency: 50Hz. It can be used for electric transformation and distribution of urban power grids. It is primarily applicable for high-rise buildings, commercial centers, airports, offshore drilling platforms, ships, tunnels, large hydropower stations and railway stations.

    Product introduction



    Working Conditions:
    No.
    Conditions
    Units
    Parameter Values
    1
    Rated Voltage
    kV
    10 or 35
    2
    Highest Operating Voltage
    kV
    12 or 40.5
    3
    System Neutral Point Earthing Mode
     
    Unearthed
    4
    Rated Frequency
    Hz
    50
    5
    Pollution Grade
     
    d(Ⅲ)
    6
    System Short Circuit Current Level (High Voltage Side)
    kA
    20
    7
    Ambient Temperature
    Maximum Daily Temperature
    ℃
    40
    Minimum Daily Temperature
    -25
    Maximum Daily Temperature Difference
    K
    25
    Average Temperature of the Hottest Month
    ℃
    30
    Maximum Annual Average Temperature
    20
    8
    Humidity
    Average Daily Relative Humidity
    %
    ≤95
    Average Monthly Relative Humidity
    ≤90
    9
    Altitude
    m
    ≤1000
    10
    Solar Radiation Intensity
    W/cm2
    0.1
    11
    Maximum Icing Thickness
    mm
    20
    12
    Maximum average wind speed: keeping in good conditions for 10min at 10m from the ground level  
    m/s
    35
    13
    Earthquake Resistance
    Horizontal Ground Acceleration
    m/s2
    2
    Safety Coefficient of 3 Since Resonance Cycles
     
    ≥1.67
    14
    Installation Site
     
    Indoor
    Note 1: Values about temperatures in the table must be adjusted accordingly if the lowest ambient temperature is above -25℃.
    Note 2: Pollution grade diagram must be provided if the pollution grade is grade IV. 


    Product Parameters:
    Table 1  6kV&10kV- 30kV.A ~ 2500kV.A, No-Load Voltage Regulation, Distribution Transformer
    Rated Capacity (kVA)
    Voltage Combination & Tapping Range
    Connection Symbol
    No-Load Loss (kW)
    On-Load Loss under Different Insulation System Temperatures (kW)
    No-Load Current (%)
    Short-Circuit Impedance (%)
    High Voltage (kV)
    High Voltage Tapping Range (%)
    Low Voltage (kV)
    130℃(B)
    (100℃)
    155℃(F)
    (120℃)
    180℃(H)
    (145℃)
    30
    6
    6.3
    6.6
    10
    10.5
    11
    ±2.5
    ±5
    0.4
    Dyn11
    Yyn0
    0.190
    0.670
    0.710
    0.760
    2.0
    4.0
    50
    0.270
    0.940
    1.00
    1.07
    2.0
    80
    0.370
    1.29
    1.38
    1.48
    1.5
    100
    0.400
    1.48
    1.57
    1.69
    1.5
    125
    0.470
    1.74
    1.85
    1.98
    1.3
    160
    0.540
    2.00
    2.13
    2.28
    1.3
    200
    ±2×2.5
    ±5
    0.620
    2.37
    2.53
    2.71
    1.1
    250
    0.720
    2.59
    2.76
    2.96
    1.1
    315
    0.880
    3.27
    3.47
    3.73
    1.0
    400
    0.980
    3.75
    3.99
    4.28
    1.0
    500
    1.16
    4.59
    4.88
    5.23
    1.0
    630
    1.34
    5.53
    5.88
    5.29
    0.85
    630
    1.50
    6.61
    5.96
    6.40
    0.85
    6.0
    800
    1.52
    6.55
    6.96
    7.46
    0.85
    1 000
    1.77
    7.65
    8.13
    8.76
    0.85
    1 250
    2.09
    9.10
    9.69
    10.3
    0.85
    1 600
    2.45
    11.0
    11.7
    12.5
    0.85
    2 000
    3.05
    13.6
    14.4
    15.5
    0.70
    2 500
    3.60
    16.1
    17.1
    18.4
    0.70
    1 600
    2.45
    12.2
    12.9
    13.9
    0.70
    8.0
    2 000
    3.05
    15.0
    15.9
    17.1
    0.70
    2 500
    3.60
    17.7
    18.8
    20.2
    0.70
    Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


    Table 2  6kV&10kV - 630kV.A~6300kV.A, No-Load Voltage Regulation, Power Transformer
    Rated Capacity (kVA)
    Voltage Combination & Tapping Range
    Connection Symbol
    No-Load Loss (kW)
    On-Load Loss under Different Insulation System Temperatures (kW)
    No-Load Current (%)
    Short-Circuit Impedance (%)
    High Voltage (kV)
    High Voltage Tapping Range (%)
    Low Voltage (kV)
    130℃(B)
    (100℃)
    155℃(F)
    (120℃)
    180℃(H)
    (145℃)
    630
    6
    6.3
    6.6
    10
    10.5
    11
    ±2×2.5
    ±5
    3
    3.15
    6
    6.3
    Dyn11
    Yd11
    Yyn0
    1.44
    6.00
    6.36
    6.80
    1.0
    6.0
    800
    1.62
    7.17
    7.60
    8.13
    1.0
    1 000
    1.94
    8.28
    8.78
    9.39
    0.85
    1 250
    2.34
    9.86
    10.4
    11.1
    0.85
    1 600
    2.79
    12.0
    12.7
    136.6
    0.85
    2 000
    3.60
    14.3
    15.2
    16.2
    0.70
    2 500
    4.23
    16.8
    17.8
    19.1
    0.70
    3 150
    5.04
    19.7
    20.9
    22.3
    0.60
    7.0
    4 000
    10
    10.5
    11
    6.07
    23.7
    26.1
    26.0
    0.60
    5 000
    7.20
    28.0
    29.7
    31.8
    0.50
    6 300
    8.50
    33.3
    35.2
    37.8
    0.50
    Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


    Table 3  6kV&10kV - 315kV.A ~ 2500kV.A, On-Load Voltage Regulation, Distribution Transformer
    Rated Capacity (kVA)
    Voltage Combination & Tapping Range
    Connection Symbol
    No-Load Loss (kW)
    On-Load Loss under Different Insulation System Temperatures (kW)
    No-Load Current (%)
    Short-Circuit Impedance (%)
    High Voltage (kV)
    High Voltage Tapping Range (%)
    Low Voltage (kV)
    130℃(B)
    (100℃)
    155℃(F)
    (120℃)
    180℃(H)
    (145℃)
    315
    6
    6.3
    6.6
    10
    10.5
    11
    ±4×2.5
    0.4
    Dyn11
    Yyn0
    0.990
    3.40
    3.61
    3.86
    1.1
    4.0
    400
    1.12
    4.02
    4.27
    4.57
    1.1
    500
    1.28
    4.92
    5.22
    5.58
    1.1
    630
    1.49
    5.82
    6.17
    6.60
    1.0
    630
    1.44
    6.00
    6.36
    6.80
    1.0
    6.0
    800
    1.71
    7.07
    7.50
    8.02
    1.0
    1 000
    1.98
    8.28
    8.78
    9.39
    0.85
    1 250
    2.34
    9.86
    10.4
    11.1
    0.85
    1 600
    2.72
    11.7
    12.4
    13.3
    0.85
    2 000
    3.42
    14.3
    15.2
    16.2
    0.70
    2 500
    3.96
    17.1
    18.1
    19.4
    0.70
    Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


    Table 4  20kV - 50kV.A ~ 2500kV.A, No-Load Voltage Regulation, Power Transformer
    Rated Capacity (kVA)
    Voltage Combination & Tapping Range
    Connection Symbol
    No-Load Loss (kW)
    On-Load Loss under Different Insulation System Temperatures (kW)
    No-Load Current (%)
    Short-Circuit Impedance (%)
    High Voltage (kV)
    High Voltage Tapping Range (%)
    Low Voltage (kV)
    130℃(B)
    (100℃)
    155℃(F)
    (120℃)
    180℃(H)
    (145℃)
    50
    20
    22
    24
    ±2.5
    ±5
    0.4
    Dyn11
    Yyn0
    0.340
    1.16
    1.23
    1.31
    2.0
    6.0
    100
    0.540
    1.87
    1.99
    2.13
    1.8
    160
    0.670
    2.33
    2.47
    2.64
    1.6
    200
    ±2×2.5
    -5
    0.730
    2.77
    2.94
    3.14
    1.6
    250
    0.840
    3.22
    3.42
    3.66
    1.8
    315
    0.970
    3.85
    4.08
    4.36
    1.8
    400
    1.15
    4.65
    4.84
    5.18
    1.1
    500
    1.35
    5.46
    5.79
    6.19
    1.1
    630
    1.53
    6.45
    6.84
    7.32
    1.0
    800
    1.75
    7.79
    8.26
    8.84
    1.0
    1000
    2.07
    9.22
    9.78
    10.4
    0.85
    1250
    2.38
    10.8
    11.5
    12.3
    0.85
    1600
    2.79
    13.0
    13.8
    14.8
    0.85
    2000
    3.24
    15.4
    16.3
    17.5
    0.70
    2500
    3.87
    18.2
    19.3
    20.7
    0.70
    2000
    3.24
    16.8
    17.8
    19.1
    0.70
    8.0
    2500
    3.87
    20.0
    21.2
    22.7
    0.70
    Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


    Table 5  35kV - 50kV.A ~ 2500kV.A, No-Load Voltage Regulation, Power Transformer
    Rated Capacity (kVA)
    Voltage Combination & Tapping Range
    Connection Symbol
    No-Load Loss (kW)
    On-Load Loss under Different Insulation System Temperatures (kW)
    No-Load Current (%)
    Short-Circuit Impedance (%)
    High Voltage (kV)
    High Voltage Tapping Range (%)
    Low Voltage (kV)
    130℃(B)
    (100℃)
    155℃(F)
    (120℃)
    180℃(H)
    (145℃)
    50
    35
    36
    37
    38.5
    ±2.5
    ±5
    0.4
    Dyn11
    Yyn0
    0.450
    1.34
    1.42
    1.52
    2.3
    6.0
    100
    0.630
    1.97
    2.09
    2.23
    2.0
    160
    0.790
    2.65
    2.81
    3.00
    1.5
    200
    ±2×2.5
    ±5
    0.880
    3.13
    3.32
    3.55
    1.5
    250
    0.990
    3.58
    3.80
    4.06
    1.3
    315
    1.17
    4.25
    4.51
    4.82
    1.3
    400
    1.37
    5.10
    5.41
    5.79
    1.1
    500
    1.62
    5.27
    6.65
    7.11
    1.1
    630
    1.86
    7.25
    7.69
    8.23
    1.0
    800
    2.16
    8.60
    9.12
    9.76
    1.0
    1000
    2.43
    9.86
    10.4
    11.1
    0.75
    1250
    2.83
    12.0
    12.7
    13.6
    0.75
    1600
    3.24
    14.6
    15.4
    16.5
    0.75
    2000
    3.82
    17.2
    18.2
    19.5
    0.75
    2500
    4.45
    20.6
    21.8
    23.8
    0.75
    Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


    Table 6  35kV - 800kV.A ~ 25000kV.A, No-Load Voltage Regulation, Power Transformer
    Rated Capacity (kVA)
    Voltage Combination & Tapping Range
    Connection Symbol
    No-Load Loss (kW)
    On-Load Loss under Different Insulation System Temperatures (kW)
    No-Load Current (%)
    Short-Circuit Impedance (%)
    High Voltage (kV)
    High Voltage Tapping Range (%)
    Low Voltage (kV)
    130℃(B)
    (100℃)
    155℃(F)
    (120℃)
    180℃(H)
    (145℃)
    800
    35
    36
    37
    38.5
    ±2×2.5
    ±5
    3.15
    6
    6.3
    10
    10.5
    11
    Dyn11
    Yd11
    Yyn0
    2.25
    8.87
    9.40
    10.0
    0.95
    6.0
    1 000
    2.67
    10.3
    10.9
    11.6
    0.95
    1 250
    3.13
    12.1
    12.9
    13.8
    0.85
    1 600
    3.69
    14.6
    15.4
    16.5
    0.85
    2 000
    4.23
    17.2
    18.2
    19.5
    0.75
    7.0
    2 500
    4.86
    20.6
    21.8
    23.3
    0.75
    3 150
     
     
     
    6.03
    23.1
    24.5
    26.2
    0.70
    8.0
    4 000
     
     
     
    7.02
    27.7
    29.4
    31.8
    0.70
    5 000
     
     
     
    8.37
    32.9
    34.9
    37.4
    0.60
    6 300
     
     
     
    9.90
    38.5
    40.8
    43.7
    0.60
    8 000
     
     
     
    Dyn11
    Yd11
    YNd11
    11.3
    43.4
    46.0
    49.3
    0.50
    9.0
    10 000
     
     
     
    12.9
    52.4
    55.5
    59.4
    0.50
    12 500
     
     
    6
    6.3
    10
    10.5
    11
    15.7
    60.9
    64.6
    69.2
    0.40
    16 000
     
     
    19.3
    71.7
    76.0
    81.3
    0.40
    20 000
     
     
    22.9
    80.6
    85.5
    91.5
    0.35
    10.0
    25 000
     
     
    27.1
    95.3
    101
    108
    0.35
    Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


    Table 7  35kV - 2000kV.A ~ 25000kV.A, On-Load Voltage Regulation, Power Transformer
    Rated Capacity (kVA)
    Voltage Combination & Tapping Range
    Connection Symbol
    No-Load Loss (kW)
    On-Load Loss under Different Insulation System Temperatures (kW)
    No-Load Current (%)
    Short-Circuit Impedance (%)
    High Voltage (kV)
    High Voltage Tapping Range (%)
    Low Voltage (kV)
    130℃(B)
    (100℃)
    155℃(F)
    (120℃)
    180℃(H)
    (145℃)
    2000
    35
    36
    37
    38.5
    ±4×2.5
    6
    6.3
    10
    10.5
    11
    Dyn11
    Yd11
    4.50
    17.9
    10.0
    20.3
    0.75
    7.0
    2500
    5.22
    21.8
    22.6
    24.2
    0.75
    3150
    6.30
    24.0
    26.4
    27.2
    0.70
    8.0
    4000
    7.38
    28.7
    30.4
    32.6
    0.70
    5000
    8.78
    34.0
    36.1
    38.6
    0.60
    6300
    10.8
    39.4
    41.8
    44.7
    0.60
    8000
    12.8
    44.8
    47.5
    50.8
    0.50
    9.0
    10000
    13.5
    53.9
    57.1
    61.2
    0.50
    12500
    16.4
    62.7
    56.5
    71.1
    0.40
    16000
    20.8
    73.8
    78.2
    83.7
    0.40
    2000
    23.8
    88.0
    88.0
    94.2
    0.35
    10.0
    25000
    28.1
    98.2
    104
    111
    0.35
    Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.

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