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SGB-RL Dry transformer with open windings and space triangular core
High mechanical strength: the spatial twisted core has a round cross-section of the rods, which provides better resistance to short-circuit currents compared to an oval cross-section. After vacuum impregnation, the windings have high strength, and a special fastening method allows the product to withstand shock electrodynamic loads in the event of a sudden short circuit without damage.
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Product Description
Low losses: due to the fact that the dry transformer with open windings and a spatial twisted core is characterized by the absence of joints, low magnetic resistance, the coincidence of the direction of the magnetic flux in the corner parts with the rolling direction of silicon steel, high winding density and low weight of the core, compared to traditional dry transformers with a laminated core, no-load losses Po are reduced by 18–28%, and the no-load current Io is reduced by 50–60%. The energy saving effect is significant, operation is economical.
Low noise level: The noise level of a dry-type stranded core transformer is 6-10 dB lower than that of a dry-type laminated core transformer.
Low Partial Discharge: The coil insulation of this product is made of NOMEX flame retardant paper, which is a Class C insulation material that can withstand temperatures up to 220°C for a long time. The windings undergo vacuum impregnation, the interlayer and interturn space is completely impregnated without bubbles. The level of partial discharges of the product is controlled within 5 pC.
High mechanical strength: the spatial twisted core has a round cross-section of the rods, which provides better resistance to short-circuit currents compared to the oval cross-section. After vacuum impregnation, the windings have high strength, and a special fastening method allows the product to withstand shock electrodynamic loads in the event of a sudden short circuit without damage.
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