Product Name: High Efficiency K Rated Isolation Transformer Brand: Gridstone Frequency Characteristics: Power Frequency Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer, Isolation Transformer Certification: ISO9001-2000, CCC Winding Type: Separated Winding Transformer Cooling Method: Dry-type Transformer Core: Core-type Transformer Phase: Three Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio Trademark: GridStone Transport Package: Wooden Box Specification: 1kVA to 3000kVA Origin: Shanghai, China Product Description FeaturesThe K-rated transformers are isolation transformers specifically designed to withstand the phenomena due to the fact that non-linear loads generate high levels of harmonic distortion. Typical non-linear load are computers, variable speed drives, inverters, welders and so on. Harmonic generation results in increased current absorption and therefore higher losses. In order to ensure that the thermal class temperature limit is respected, the transformer design must keep into consideration the presence of said harmonics. The K factor is an indication of how much the harmonic distortion affects the system: the higher is K, the higher is the harmonic content that the transformer must withstand without any damage. It is worth reminding that a K-rated transformers does not cancel the harmonics in the system (except for third and triplen harmonics), but is able to tolerate their effects. In order to reduce or eliminate the harmonic content, it is necessary to arrange suitable filtering equipment.SpecificationCapacity1KVA-3000KVAVoltage Grade<= AC1140VInput Voltage rangeRated voltage±10%Output VoltageRated voltage±3% when input voltage is at the rated voltage.Frequency50Hzor60HzDielectric Strength3500V / 10mA / 60sLoadingcapabilityWhen the transformer is 100% loaded, it can take 3 times current in short time.Insulation≥100MΩ(DC500V)Insulation GradeFWorking Temperature-15°C--+45°CHumidity<95℅Temperature increase<100KNoise<55dbCompany Profile:Founded in 1983, GridStone Electric is a leading manufacturer of automatic voltage stabilizer and transformer. The products currently include digital static voltage stabilizer, digital servo voltage optimizer, power factor correction units, LV and MV transformers and reactors, UPS, Variable Frequency Power Source, Oil Immersed Induction Voltage Regulator. Thanks to over 30 years in the business and on going technical research, GridStone have become a competitive high-tech company, and meet the requirements of a constantly growing number of customers through design, production and service.Besides standard production, GridStone is flexible and strong at custom design and production according to the customers' specification. Expert training and technical support are available to serve the customers quickly and professionally.GridStone factories are ISO9001 and ISO14001 certified.