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Insulation Material for Transformers
Insulation material for transformer
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Material Properties Properties Units Values Nominal thickness mm 0.15 0.17 0.2 0.23 0.25 0.3 0.35 Thickness tolerance mm ±0.02 ±0.03 ±0.04 Grammage and tolerance g/m2 180+25 210±30 240±30 260±35 300±40 350±50 430±50 Tensile strength MD No bending N/10mm ≥80 ≥120 ≥140 ≥180 ≥190 ≥270 ≥320 After bending ≥80 ≥105 ≥120 ≥150 ≥170 ≥200 ≥300 TD No bending ≥80 ≥105 ≥120 ≥150 ≥170 ≥200 ≥300 After bending ≥70 ≥90 ≥100 ≥120 ≥130 ≥150 2200 Elongation MD No bending % ≥15 / After bending ≥10 ≥5 TD No bending ≥20 / After bending ≥10 ≥5 Breakdown Voltage KV ≥6 ≥7 ≥9 ≥10 ≥12 ≥15 ≥18 No bending Bonding property at room temp. / No delamination Bonding property at 180±2℃ / No delamination, no bubble, no adhesive flow 10min Temp. index of / ≥155 heat-resistance in a long term (TI) The quality warranty period Twelve months
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