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0102030405
1-220KV.jpg
2-220kV电力变压器.jpg
220kV-Oil-Immersed-Type-Power-Transformer.jpg

220kV Oil Immersed Power Transformer - High Performance from China Suppliers and Factory

General Overview
Our high-voltage 220kV transformer features a state-of-the-art full folding plate tank structure, originally designed for our 110kV transformers. This innovative design enhances structural integrity, facilitates easier installation, and simplifies site inspections. Leveraging years of experience in design and manufacturing, our transformer exhibits exceptional reliability and performance, meeting international advanced standards. As a leading China supplier and factory, we are committed to delivering top-quality transformers that meet the diverse needs of our clients.

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    Product Details

    General

    Through continuous improvement and alteration, our products are with characteristics of low loss, low noise, low partial discharge, high short circuit withstand capacity, high impedance, and fully-enclosed structure. The series covers two-winding and three-Winding off-circuit tap changing power transformer, on-load tap changing transformer and tap-changing auto transformer.

    Standard

    IEC60076 (1-5) Power transformers
    IEC60296 Specification for mineral insulating oil for transformers and switchgear
    IEC60354 Loading guide for oil immersed transformer
    IEC60317: Insulated Bushings
    ANSI, IEEE, AS, GB etc.
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    Technical parameter

    The energy efficiency level of 220 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
    31500 15 115 18 115 22 122 12~14
    40000 18 134 21 134 26 142
    50000 21 161 25 161 31 170
    63000 25 188 30 188 37 199
    75000 29 213 34 213 42 225
    90000 34 246 40 246 49 259
    120000 41 304 49 304 60 321
    150000 49 360 58 360 71 380
    160000 51 378 60 378 74 399
    180000 56 413 66 413 82 436
    240000 70 484 83 484 102 511
    300000 83 577 98 577 121 609
    360000 95 662 112 662 138 698
    370000 97 675 114 675 141 713
    400000 103 716 122 716 150 755
    420000 106 742 125 742 154 783
    The energy efficiency level of 220 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
    31500 18 138 21 138 26 145

    H-M:22~24

    H-L:12~14

    M-L:7~9

    H-M:12~14

    H-L:22~24

    M-L:7~9
    40000 21 165 25 165 30 174
    50000 24 194 29 194 35 205
    63000 29 231 34 231 42 244
    90000 37 300 44 300 54 316
    120000 46 369 55 369 67 390
    150000 55 438 65 438 80 463
    180000 62 500 73 500 90 527
    240000 72 616 91 616 112 650
    300000 91 726 108 726 133 767
    The energy efficiency level of 220 kV oil-immersed three-phase double-winding LV-66kV 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
    31500 17 129 20 129 24 136 12~14
    40000 20 150 23 150 29 159
    50000 23 180 27 180 34 190
    63000 28 211 33 211 40 222
    90000 36 275 43 275 53 291
    120000 45 330 53 330 65 349
    150000 53 387 63 387 78 409
    180000 61 438 72 438 88 463
    240000 75 543 88 543 109 573
    The energy efficiency level of 220 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
    31500 17 115 20 115 24 122 12~14
    40000 20 134 23 134 29 142
    50000 24 161 28 161 34 170
    63000 28 188 33 188 40 199
    90000 35 246 42 246 51 259
    120000 43 304 51 304 63 321
    150000 51 360 60 360 74 380
    180000 59 413 70 413 86 436
    120000

    LV

    66kV 69kV

    		 45 303 53 303 65 320
    150000 53 355 62 355 77 374
    180000 62 406 73 406 90 428
    240000 77 504 91 504 112 532
    The energy efficiency level of 220 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
    31500 19 138 23 138 28 145

    H-M:12~14

    H-L:22~24

    M-L:7~9
    40000 23 165 27 165 33 174
    50000 26 194 31 194 38 205
    63000 31 231 36 231 45 244
    90000 40 300 47 300 58 316
    120000 51 369 60 369 74 390
    150000 59 438 70 438 86 463
    180000 68 538 81 538 99 568
    240000 85 667 100 667 123 704
    The energy efficiency level of 220 kV oil-immersed three-phase three-winding OLTC autotransformer 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
    31500 11 92 13 92 16 97

    H-M:8~11

    H-L:28~34

    M-L:18~24
    40000 13 113 16 113 19 119
    50000 15 134 18 134 22 142
    63000 18 161 21 161 26 170
    90000 22 211 26 211 32 222
    120000 28 263 33 263 41 277
    150000 33 311 39 311 48 329
    180000 37 358 44 358 54 378
    240000 46 462 54 462 66 487

    Frequently Asked Questions (FAQ)

    Q: Which international standards do these 220 kV transformers comply with?
    Our transformers fully comply with major international standards including IEC60076 (1-5) for power transformers, IEC60296 for mineral insulating oil, IEC60354 for loading guides, IEC60317 for insulated bushings, as well as ANSI, IEEE, AS, and GB standards.
    Q: What are the main design features and characteristics of these transformers?
    They are engineered with a fully-enclosed structure that offers low loss, low noise, low partial discharge, high short-circuit withstand capacity, and high impedance characteristics.
    Q: What winding and tap-changing configurations are available in this series?
    The series covers two-winding and three-winding configurations, including both off-circuit tap-changing power transformers, on-load tap-changing (OLTC) transformers, and tap-changing autotransformers.
    Q: How is the energy efficiency of these transformers classified?
    Energy efficiency is categorized into three levels: Level I (highest efficiency, lowest losses), Level II, and Level III. Each level defines specific maximum limits for No-Load Loss and Load Loss (measured at 75℃) based on the rated capacity.
    Q: What is the typical short-circuit impedance for these 220 kV transformers?
    For double-winding no-load, LV-66kV, and OLTC power transformers, the short-circuit impedance typically ranges from 12% to 14%. For three-winding OLTC autotransformers, it varies by voltage coupling (H-M: 8~11%, H-L: 28~34%, M-L: 18~24%).

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