Account
Inquiry
So you're looking at aramid paper insulated wire for transformers or heavy electrical equipment, and the first thing most buyers ask is about the lead time for custom sizes — we're typically running about 20 days or so from order confirmation, depending on the volume and whether we've got base conductor in stock.
The insulation level here is H, which means it'll handle continuous temperatures up to 180°C, and that's pretty much essential for oil-immersed transformers where standard enamel wire just won't cut it — you're getting superior oil resisance along with the thermal performnce, and we've been selling this configuration for years to manufacturers who need something that won't break down in humid conditions.
Now about the specs, the standard dimnesions we work with range from 3.15mm up to 12.50mm on the wider side, and the deviation is tight — ±0.03mm for the smaller sizes and ±0.07mm for the larger ones — so you're not going to get winding inconsistencies that mess with your stack height, and the elongation rate sits at 30% or 32% depending on teh exact thickness you need.
We don't have a set MOQ on these, but bulk pricing really starts to kick in around 500 kilograms or so — and honestly, if you're doing a prototype run or a small batch, the per-kilo cost is going to be higher, but we can still do it without any minimum order headaches because we know buyers often need to test a new gauge before committing.
One thing that catches people off guard is that this wire isn't really suited for high-frequency application like inverter duty motors — the paper insulation adds capacitance that can cause issues above a few kilohertz, so for standdard power transformers and oil-filled equipment though, it's actually better than Nomex tape in terms uniformity because of that it's wrapped during the drawing process.
If you send over the exact a and b dimensions you need, our company can get you a quote with the COA and the packing options — we usually ship it on wooden spools or fiber drums depending on the weight, and we've got ISO9001 and CE on file if your QA team needs that upfront.
For that range, the deviation is ±0.05 mm. It's based on the standard dimension a/b — check our spec table for the exact values on your size.
Yes, all three certifications are standard with every order. We'll include copies of the ISO9001, CE, and CCC documents in the shipping package.
We don't list a fixed MOQ here, but typical custom orders start around 500 kg. For smaller quantities, just reach out — we can often accommodate based on material availability.
Lead time is usually 15–20 working days after order confirmation, depending on the customization complexity. For tight deadlines, let us know upfront and we'll try to speed it up.
Yes, it's oil resistant — that's one of the key features. It works well in transformer oil environments, maintaining its insulation properties and thermal stability.
