Built-in insulated high-frequency shielded transformer. It is less susceptible to noise from the grounding side.
The "DI-21 type detection impedance" is a product designed for high-sensitivity partial discharge detection. By tuning the resonant frequency of the test circuit, which consists of the specimen, coupling capacitor, and detector, to the tuning frequency of the partial discharge measuring instrument, it has been developed to enable high-sensitivity partial discharge measurements. Additionally, since the charging current of the test circuit is not drawn into the measuring instrument, safe measurements can be performed. Please feel free to contact us if you have any requests. 【Features】 ■ Minimal change in measurement sensitivity due to the length of the cables between the measuring instruments ■ Safe as the charging current is not drawn into the measuring instrument ■ Less susceptible to noise from the grounding side *For more details, please download the PDF or feel free to contact us.
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【Specifications】 ■ Rated resonant capacitance value (at frequency 400kHz): 0 to 10,000pF (12 ranges) ■ Compatible load impedance: 50Ω maximum input current AC1A (RMS) ■ Insulation resistance and withstand voltage: 100MΩ or more / DC500V, AC1500V / 1 minute ■ Dimensions and weight: L = 200±2, W = 120±1.2, H = 60±1.2mm (excluding protrusions), approximately 700g ■ Environmental conditions: Operating temperature 0℃ to 50℃, operating humidity 85% or less, indoor use * For more details, please download the PDF or feel free to contact us.
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Our company has developed a tuned partial discharge measurement device in collaboration with the Ministry of International Trade and Industry's Electric Testing Laboratory (now the National Institute of Advanced Industrial Science and Technology), and it is used by leading power companies and heavy electrical equipment manufacturers both domestically and internationally. Additionally, it is also used for insulation testing of motors and inverters in hybrid cars and electric vehicles. Please feel free to contact us if you have any inquiries.