---
title: New Value Package – Perfect Roundness Concept
description: Are you looking for more reliable high and extra high voltage power cable systems with better joints, terminations and lower material costs?
image: https://blog.maillefer.net/hubfs/Imported_Blog_Media/RoundnessConcept_100dpi.jpg
---

![RoundnessConcept_100dpi](https://blog.maillefer.net/hs-fs/hubfs/Imported_Blog_Media/RoundnessConcept_100dpi.jpg?width=591&name=RoundnessConcept_100dpi.jpg)

Are you looking for more reliable high and extra high voltage power cable systems with better joints, terminations and lower material costs?

Maillefer has invested heavily on the R&D of insulating and crosslinking of high voltage and extra high voltage power cables.

With the help of our new and the world’s sole vertical pilot line at Maillefer headquarters R&D center in Finland, we have developed a “Cable Roundness Concept”, which remarkably improves cable roundness.

#### [Perfect Roundness Concept Value Package](http://www.maillefer.net/en/value-package/perfect-roundness-concept-value-package-vcv-lines/)

- Inductive conductor heating after the crosshead
- EHT nitrogen cooling circulation to force the cable into a perfect round shape after the crosshead
- Correct cross linking conditions calculated with NCC, Maillefer’s curing calculation and simulation program
- Effective mixing of melt with the XLPE insulation screw SM7
- Even flow distribution with the crosshead’s specially designed insulation distributor
- Accurate screw and crosshead temperature control with Maillefer’s Integrated Water Tempering unit IWT
- Round Milliken conductor with conductor compacting unit before the crosshead
- Unique and precise measurement of cable roundness
- For H[igh Voltage Vertical Continuous Vulcanizing Line EPL 51///Explore](http://www.maillefer.net/en/technology/mv-hv-ehv-high-voltage-vertical-continuous-vulcanizing/)

#### Which one would you prefer?

Perfect Roundness Concept with the roundness of Dmin/ Dmax ≥ 0.995   
or  
Common business standard with the roundness of Dmin/ Dmax ≤ 0.975

![RoundnessConcept_2](https://blog.maillefer.net/hs-fs/hubfs/Imported_Blog_Media/RoundnessConcept_2.jpg?width=567&name=RoundnessConcept_2.jpg)

A proven sample measurement Dmin/ Dmax for a 500 kV cable gave an extraordinary roundness result of ≥ 0.998

With our [Perfect Roundness Concept Value Package](http://www.maillefer.net/en/value-package/perfect-roundness-concept-value-package-vcv-lines/) you can remarkably improve the quality of cable joints and terminations in addition to savings in insulation material more than 30 tons per year.

**Jorma Leppänen  
**Product Manager, MV/HV/EHV Cable Solutions  
[jorma.leppanen@maillefer.net](mailto:jorma.leppanen@maillefer.net)

 Topics: [Product quality](https://blog.maillefer.net/tag/product-quality), [Production Capacity](https://blog.maillefer.net/tag/production-capacity), [Production cost](https://blog.maillefer.net/tag/production-cost), [Novelties & Launches](https://blog.maillefer.net/tag/novelties-launches), [Wire & cable manufacturing](https://blog.maillefer.net/tag/wire-cable-manufacturing)

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