Transformer bobbin

Product Features:

Product type: Epoxy resin
Inner/Out Dia.(mm) According to the drawing
Height (mm): According to the drawing
Voltage Level(kv):10—35

Skeleton index of amorphous alloy


 Item Property Unit Requirement Test result
1 Thickness mm ±0.5 0.32
2 Apparent density G/cm2 ≥1.70 1.85
3 Moisture content % ≤0.4 0.38
4 Compressibility MPa ≥200 206
5 Apparent modulus of elasticity perpendicular to laminations MPa ≥158 161
6 Shearing strength test for glue line bond MPa ≥24 24.8
7 Contamination of liquid dielectrics(50Hz,Δtanδ) ≤0.04 0.037
8 Volume resistivity: normal time Ω.m ≥1×1011 1.9×1011
9 180℃±2℃ Ω.m ≥1×102 1.87×102
10 After immersion 25h Ω.m ≥1×102 1.82×102
11 Heat resistance grade ≥130 135
12 Breakdown voltage parallel
 to the laminations(in  90℃±2℃ 25# transformer oil)
Kv ≥25 26.3