Taped Litz Wire 0.32mm 250 Strands High Temperature High Frequency PI Insulation Copper Litz Wire For EV

Short Description:

Single wire diameter: 0.32mm,   Number of strands:250

Thermal rating: class 155,   Max.OD:7.71mm   Insulation material: PI tape

MOQ:30KG,

1KG=5.3M


Product Detail

Product Tags

Feature 

RVYUAN offers two primary film options depending on the thermal class the application requires. Polyesterimide (PET) film suits Class 130 nvironments, while polyimide (PI / Kapton) film handles Class 180 conditions where sustained heat would soften or embrittle lesser materials. The taping overlap rate is adjustable up to 55 percent, and this is where many sourcing engineers underestimate the difficulty. Maintaining consistent overlap across hundreds of meters demands precise tension feedback on the taping line; any drift opens microscopic gaps that become weak points under high-voltage stress. Done correctly, the insulation withstands breakdown voltages exceeding 6,000 V in standard builds, climbing past 10,000 V in multi-layer wraps.

Specification

Name: Taped Litz wire(155/class)

Spec: 0. 32X 250Model:2UEW-F-PI

Tape Name:PI

Tape Spec:0.025x20

Item Tech

requirement

Sample 1
Single wire Diameter mm 0.340-0.357 0.340-0.352
Conductor 0.32±0.005 0.318-0.320
O. D. mm 7.71 6.98-7.65
Resistance Ω/m 0.000891 0.000826
Dielectric strength v 6000 13000
Pitch(mm) 130±20 130
No. Of strands 156 (31X4)+32
Tape Overlap % 50 54
Winding NO crack ok

FAQ

1. Can I customize products with my own logo, size, and shape?
Yes, but the MOQ (Minimum Order Quantity) is subject to negotiation.

2. What are your payment methods?
T/T, D/P, L/C, PayPal.

3. Which courier services do you use?
FedEx, DHL, TNT, UPS, with discounts up to 80%.

4. How are your products different from competitors'? What are your advantages?
We offer a full range of high-frequency magnet wire products, including litz wire, rectangular enameled copper wire, round enameled copper wire, triple-insulated wire, etc., to meet various requirements. We support small-batch customization, ensuring quality and delivery even during your R&D or startup phase.

5. Do you charge a mold fee? How much? Is it refundable? How?
A mold fee applies for special customized products, and the amount depends on the specific specifications. The mold fee is refundable after a certain order quantity is reached.

6. Do you have a Minimum Order Quantity (MOQ)?
Yes, the MOQ is determined based on the wire specification and type.

7. What testing equipment do you have?
Laser diameter gauge, high-voltage spark tester, elongation tester, spring-back tester, withstand voltage tester, solderability tester, Resistance Tester etc.

Application

    1. 1.High-Frequency Transformers SMPS and power inverter transformers which switch at tens or hundreds of kilohertz produce unrelenting thermal cycling. The Class 180 rating of Kapton isn't just a comfort margin here – it is what separates a twenty year service life from a warranty claim. In fact, engineers who have made the switch from PET-wrapped to Kapton-wrapped builds on the same platform often report measurable reductions in hot-spot temperature, which directly translates into longer component life, and fewer unplanned shut downs.

    2.Electric Vehicle Charging Infrastructure On-Board charger (OBC) and DC fast-charger (DCFC) clients are provided with huge amount of power through all size-limited enclosures. Profiled taped litz wire fits in tight core windows that round wire can't fill effectively providing high insulation margins with high current density. The increasing trend for 800V battery architectures in future EVs makes dielectric strength even more critical, since a single insulation fault at an elevated bus voltage level can escalate into a safety critical failure.

    3.Electric Vehicle Charging Infrastructure The on-board charger (OBC), DC fast-charger (DCFC) clients receive massive power through all size-limited enclosures. Profiled taped litz wire can be accomodated into the tight cores windows better than round wire can with higher insulation margin at higher current loading. Growing interest for 800V battery architectures in next generation EVs further increases the importance of dielectric strength, as one insulation fault at an elevated bus voltage level can lead to a safety critical failure.

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Certificates

ISO 9001
UL
RoHS
REACH SVHC
MSDS

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About us

Founded in 2002, Ruiyuan has been in the manufacture of enamelled copper wire for 20 years.We combine the best manufacturing techniques and enamel materials to create a high-quality, best-in-class enameled wire. The enameled copper wire lies at the heart of technology we use every day – appliances, generators, transformers, turbines, coils and much more. Nowadays, Ruiyuan has the global footprint to support our partners in marketplace.

Ruiyuan factory

Our Team
Ruiyuan attracts many outstanding technical and management talents, and our founders have built the best team in the industry with our long-term vision. We respects the values of each employee and provides them with a platform to make Ruiyuan a great place to grow a career.

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