Diamond Dotted Paper DDP

Q: What is the regular thickness of DDP you supply?

A: Normal thickness is 0.8 mm, 0.13 mm, 0.18 mm, 0.2 mm, 0.25 mm.

Q: Can you please tell me thickness tolerance also?

A: Tolerance is different based on different thickness. 0.080±0.005, 0.130±0.007,0.180±0.010,0.200±0.010,0.250±0.010.

Q: What is the BDV of your DDP?


DDP thickness 0.08 0.13 0.18 0.2 0.25
BDV in air(Kv) ≥0.8 ≥1.37 ≥2.00 ≥2.10 ≥2.25
BDV in transformer oil(Kv) ≥4.00 ≥7.00 ≥9.00 ≥9.80 ≥11.50


Q: What is the main application of DDP?

A: It’s widely used for layer insulation on transformers, electrical motors, electrical apparatus, meters, switches, etc. 

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