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China 66-110kV Oil Immersed Power Transformer Suppliers - High-Performance Factory Solutions

General
The 110KV Transformer from Tianan(group) is engineered using a synthesis of advanced technologies and extensive expertise in transformer design and manufacturing. As a leading China supplier and factory in the industry, we have achieved international standards of reliability and performance. Our products undergo continuous improvement and refinement, resulting in a series that embodies the distinct characteristics of Tianan. These transformers feature low losses, minimal noise, low partial discharge, robust anti-short-circuit capability, high impedance, and a fully sealed design, complemented by specialized leakage-proof measures. Key features of our transformers include:

,

Standards: 
IEC, ANSI, IEEE, GOST, GB, and more.

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    Product Details

    Product Features

    Low loss
    Electrical calculation by sophisticated computer programs, combine electrical shielding and magnetic circuit technology.
    The core is made of cold rolled, grain orientation high magnetic silicon steel, to reduce the load loss and no-load current.
    Low partial discharge
    HV lead adopts specially molded insulation parts which effectively ensure the insulation strength and reduces partial discharge.
    High strength
    The tank can withstand the vacuum test and positive pressure test.
    Omni directional location between the core and the tank to guarantee the horizontal position during transportation and operation.
    Low Noise
    The step lapped joints of the core laminations reduce the additional losses arising in the corner portions, reduce the load current and electromagnetic noise.
    Reduce of the flux density and increase the shock absorbing measures at design to reduce the noise.
    Maintenance-free
    Adopts the bell type tank and the international leading technology, ensure 30 years durability，and maintenance-free operation.
    Transformer body assembly
    Transformer body assembly

    Date Sheet of Typical Products

    The energy efficiency level of 66 kV oil-immersed three-phase double-winding no-load tap-changing power transformer
    Rated capacity
    kVA    		 Level Ⅰ Level Ⅱ Level Ⅲ short circuit impedance
    %
    No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW
    3150 2.2 20.7 2.6 20.7 3.2 21.9 8
    4000 2.6 24.6 3.1 24.6 3.8 25.9
    5000 3.1 27.6 3.7 27.6 4.6 29.2
    6300 4.0 30.8 4.7 30.8 5.8 32.5 9
    8000 4.9 36.5 5.8 36.5 7.1 38.5
    10000 5.8 43.0 6.8 43.0 8.4 45.4
    12500 6.8 51.1 8.1 51.1 9.9 54.0
    16000 8.3 62.8 9.8 62.8 12.0 66.3
    20000 9.7 76.1 11.4 76.1 14.1 80.4
    25000 11.4 90.0 13.5 90.0 16.6 95.0
    31500 13.5 108.0 16.0 108.0 19.7 114.0
    40000 16.2 126.9 19.1 126.9 23.5 134.0
    50000 19.4 150.3 22.9 150.3 28.2 158.7
    63000 22.9 178.2 27.0 178.2 33.3 188.1
    The energy efficiency level of 66 kV oil-immersed three-phase double-winding OLTC power transformer
    Rated capacity
    kVA    		 Level Ⅰ Level Ⅱ Level Ⅲ short circuit impedance
    %
    No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW
    6300 4.4 30.8 5.2 30.8 6.4 32.5 9
    8000 5.3 36.5 6.2 36.5 7.7 38.5
    10000 6.2 43.0 7.3 43.0 9.0 45.4
    12500 7.4 51.1 8.7 51.1 10.7 54.0
    16000 8.9 62.8 10.5 62.8 12.9 66.3
    20000 10.6 76.1 12.5 76.1 15.4 80.4
    25000 12.5 90.0 14.8 90.0 18.2 95.0
    31500 14.8 108.0 17.5 108.0 21.5 114.0
    40000 17.7 126.9 20.9 126.9 25.8 134.0
    50000 20.9 150.3 24.7 150.3 30.4 158.7
    63000 24.7 178.2 29.2 178.2 35.9 188.1
    The energy efficiency level of 110 kV oil-immersed three-phase double-winding no-load tap-changing power transformer
    Rated capacity
    kVA    		 Level Ⅰ Level Ⅱ Level Ⅲ short circuit impedance
    %
    No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW
    6300 4.1 32 4.8 32 5.9 33 10.5
    8000 4.9 38 5.8 38 7.1 40
    10000 5.8 45 6.8 45 8.4 48
    12500 6.8 53 8.1 53 9.9 56
    16000 8.3 65.7 9.8 65.7 12.0 69
    20000 9.7 79 11.4 79 14.1 84
    25000 11.4 94 13.5 94 16.6 99
    31500 13.5 111 16.0 111 19.7 117
    40000 16.2 133 19.1 133 23.5 141
    50000 19.4 158 22.9 158 28.2 166
    63000 22.9 187 27.0 187 33.3 198
    75000 26.0 212 30.7 212 37.8 224 12～14
    90000 29.9 245 35.4 245 43.5 258
    120000 37.3 303 44.1 303 54.2 320
    150000 44.1 359 52.1 359 64.1 379
    180000 49.5 411 58.5 411 72.0 434
    The energy efficiency level of 110 kV oil-immersed three-phase double-winding LV-35kV no-load tap-changing power transformer
    Rated capacity
    kVA    		 Level Ⅰ Level Ⅱ Level Ⅲ short circuit impedance
    %
    No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW
    6300 4.4 33 5.2 33 6.4 35 10.5
    8000 5.3 40 6.2 40 7.7 42
    10000 6.2 47 7.3 47 9.0 49
    12500 7.2 56 8.5 56 10.5 59
    16000 8.6 68 10.1 68 12.5 72
    20000 10.2 85 12.0 85 14.8 89
    25000 12.1 99 14.2 99 17.5 105
    31500 14.3 120 16.8 120 20.7 126
    40000 16.9 140 20.0 140 24.6 147
    50000 20.3 174 24.0 174 29.5 183
    63000 24.0 209 28.3 209 34.9 220
    6300 4.4 33 5.2 33 6.4 35
    8000 5.3 40 6.2 40 7.7 42
    10000 6.2 47 7.3 47 9.0 49
    The energy efficiency level of 110 kV oil-immersed three-phase three-winding no-load tap-changing power transformer
    Rated capacity
    kVA    		 Level Ⅰ Level Ⅱ Level Ⅲ short circuit impedance
    %
    No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 Set up voltage Set down voltage
    6300 4.9 40 5.8 40 7.1 42 H-M:17.5~18.5
    H-L:10.5
    M-L:6.5    		 H-M:10.5
    H-L:17.5~18.5
    M-L:6.5
    8000 5.8 48 6.9 48 8.5 50
    10000 6.9 56 8.2 56 10.1 59
    12500 8.1 67 9.6 67 11.8 70
    16000 9.8 81 11.6 81 14.3 86
    20000 11.6 95 13.7 95 16.9 101
    25000 13.5 113 16.0 113 19.7 120
    31500 16.2 134 19.1 134 23.5 142 H-M:17.5~18.5
    H-L:10.5
    M-L:6.5    		 H-M:10.5
    H-L:17.5~18.5
    M-L:6.5
    40000 19.1 161 22.6 161 27.8 170
    50000 22.9 192 27.0 192 33.3 202
    63000 27.1 230 32.0 230 39.4 243
    6300 4.9 40 5.8 40 7.1 42
    The energy efficiency level of 110 kV oil-immersed three-phase double-winding OLTC power transformer
    Rated capacity
    kVA    		 Level Ⅰ Level Ⅱ Level Ⅲ short circuit impedance
    %
    No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW
    6300 4.4 32 5.2 32 6.4 33 10.5
    8000 5.3 38 6.2 38 7.7 40
    10000 6.2 45 7.3 45 9.0 48
    12500 7.4 53 8.7 53 10.7 56
    16000 8.9 66 10.5 66 12.9 69
    20000 10.6 79 12.5 79 15.4 84
    25000 12.5 94 14.8 94 18.2 99
    31500 14.9 111 17.6 111 21.6 117
    40000 17.8 140 21.0 140 25.8 148
    50000 21.0 175 24.8 175 30.6 184
    63000 25.0 209 29.5 209 36.3 220
    The energy efficiency level of 110 kV oil-immersed three-phase three-winding OLTC power transformer
    Rated capacity
    kVA    		 Level Ⅰ Level Ⅱ Level Ⅲ short circuit impedance
    %
    No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW    		 No-Load Loss
    kW    		 Load Loss (75℃)
    kW
    6300 5.3 40 6.2 40 7.7 42 H-M:10.5
    H-L:17.5~18.5
    M-L:6.5
    8000 6.3 48 7.5 48 9.2 50
    10000 7.5 56 8.8 56 10.9 59
    12500 8.9 67 10.5 67 12.9 70
    16000 10.6 81 12.5 81 15.4 86
    20000 12.5 95 14.8 95 18.2 101
    25000 14.9 113 17.6 113 21.6 120
    31500 17.7 134 20.9 134 25.7 142
    40000 21.2 161 25.0 161 30.8 170
    50000 25.0 192 29.6 192 36.4 202
    63000 29.8 230 35.2 230 43.3 243

    Frequently Asked Questions

    Q How do these power transformers achieve low load loss and no-load current?
    Low loss is achieved through electrical calculation using sophisticated computer programs, combined electrical shielding and magnetic circuit technology, and a core made of cold-rolled, grain-oriented high magnetic silicon steel.
    Q What design features are implemented to reduce partial discharge?
    The high-voltage (HV) lead adopts specially molded insulation parts, which effectively guarantee insulation strength and significantly reduce partial discharge.
    Q How is structural stability maintained during transport and operation?
    The tank is built to withstand vacuum and positive pressure tests. Additionally, omnidirectional location positioning between the core and the tank guarantees horizontal alignment during transportation and operation.
    Q What methods are used to lower the electromagnetic noise of the transformers?
    We utilize step-lapped joints in the core laminations to reduce corner losses and electromagnetic noise. Additionally, we lower the flux density and apply specialized design-stage shock absorbing measures.
    Q What makes these transformers maintenance-free?
    By adopting a bell-type tank structure and international leading manufacturing technologies, our transformers ensure up to 30 years of durability and maintenance-free operation.
    Q What capacity levels are covered in the 66 kV and 110 kV typical product specifications?
    Our typical specifications cover capacities ranging from 3,150 kVA to 63,000 kVA for 66 kV systems, and up to 180,000 kVA for 110 kV oil-immersed three-phase power transformers.

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