SGB11-R H Class No-Encapsulated-Winding Dry-Type P

H class no-encapsulated-winding dry-type power transformers with compound cross section designed get breakthrough magnetic-circuit structure and entire layout of traditional transformers. Reach international advanced level. Meanwhile, it seizes the visual advantages on the aspect of energy saving and environmental protection. This product shows balance of three-phase no load current, less no-load loss and no-load current that are a 40% and a 80% decline respectively compared with national standard, besides, it is featured with smaller volume, lighter weight and lower noise, therefore, this product is more and more popular with customers. It is used extensively in the locations where require fireproof and explosion-proof functions, such as high-rise building, shopping center, airport, underground, station, port, petrol, chemistry engineering, nuclear power station, nuclear submarine, residential area, light rail, power plant and so on. Three-phase current shows basic balance, active loss brought from unbalance of power grid three-current can be reduced in running. The iron core, without seam, is processed by annealing, no-load loss and no-load current makes s sharp decline compared with the laminated iron core. Compared with SCB9, they declines by 30%-40% and 80% respectively, so it gets the aim of energy saving and less loss. The iron core is without seam, the noise of transformer lowers greatly, compared with the traditional transformers, the transformer noise lowers by 10dB, lower than 50dB. HV windings are designed into the pie windings structure, wrapped by DUPONT paper covered copper wire, set with high-frequency spacer of composite material, its partial discharge capacity is up to the min. The best combination of LV foil windings are HV pie windings brings small leakage reactance at the windings end, meanwhile, the compaction device supported by coils is in equal distribution, consequently, the transformer has strong ability to resist the short circuit. All material used for this product has anti-hot and flame retardant performance, especially, the insulation material, it is always applied to aviation industry, so, the product has obvious characteristic of high temperature resistance and fireproof, even if at 800°C high temperature, it can’t give off the toxic or corrosive substance. The composite rolled iron core in unique design shows perfect combination of science & technology and tradition. On the basis of experience of traditional transformers successful operation, it is improved on the ventilation effect, gets better efficiency of heat emission. Therefore, the product has notable merits like long service life, high overload capacity, it can run normally for a long term in case of overload of 120%. Normal service conditions Max temperature: +40°C Max daily temperature: +30°C Max yearly average temperature:+20°C Cooling way: AN Min temperature: -30°C Altitude: 1000m below Used indoors: (used outdoors if enclosure is mounted) Technical parameters Rated voltage: High-voltage: 6.0, 10, 10.5, 11KV Low-voltage: 0.4KV High voltage tapping range: +5°C or 2*2.5% Connecting way: Yyno/Dyn11 Insulation class: H Insulation level: LI60AC35/AC3 Sound level: 40 50dB Partial discharge capacity less than: 5PC Technical parameters comparison between SC9 andSGB11-R ParametersSC9SGB11-RCompared with SC9, SGB11-R products declines byCapacityNo-load current(A)No-load loss(W)No-load current(A)No-load loss(W)No-load current(A)No-load loss(W)Noise502.13200.523076.13930802.14000.530076.133.31001.84300.433077.730.11251.64900.43907525.61601.45800.445071.4292001.46500.350078.5302501.47800.360078.5303151.49200.370078.531.54001.210500.37807534.55001.212000.39207530.56301.215000.310107548.5630114000.310507033.3800116500.21270803010000.819500.214857531.312500.822500.217857526.116000.826500.220507529.220000.636000.224906644.525000.643500.230006645