珠江冠缆DNV GL船用电缆首个型式认可证书是什么？

航运和海工职业面临着不断加重的竞赛和经济压力，船东、运营方和船厂正寻觅每一个增效的时机。为了支撑客户，DNV GL开发了榜首个船用铝质电缆和接触器的型式认可计划。

“这一型式认可代表了DNV GL标准的又一个榜首，表明晰咱们致力于推动船级服务以协助咱们的客户，”DNV GL 海事部高档副总裁、船只入级和技能总监Geir Dugstad说。“电气化在船只推动中起着越来越重要的效果，这一新的型式认或许够协助下降本钱、进步可持续性。”

DNV GL有关船用铝电缆和接触器的型式认可使得贵重的铜能够被铝替代。节约的本钱是巨大的——2018年铝的价格约为铜的三分之一。

“传统上，船用电缆都是用铜做的，”DNV GL 海事部的Ivar Bull解说说，“铜当然是抱负的导电体，但铜的价格在曩昔几十年里一直在急剧上涨，这给海工作带来了越来越大的本钱压力。与此同时，电力推动在航运中越来越遍及，因而寻觅更经济的电缆就显得尤为需求和重要了。”

铝的低导电性意味着需求更厚的电缆，但其全体较低的分量能够补偿。例如，一艘典型的海工船或许需求装置60吨的铜电缆。假如换成铝，分量就会削减到30吨。但即使考虑到特别的高质量终端的价格，用铝替代铜的全体本钱估量也能节约50%。更轻的电缆便利船厂装置，并下降资料运输本钱。最终，铝质而非铜质电缆的船只更轻、更省油，然后下降了运营本钱。

铝电缆的运用在曩昔三年中在一艘名为Olympic Artemis的多功能海工船上进行了测验，该艘船由Bibby Offshore公司一切、Olympic Offshore办理。这些电缆被用来为船上的一个推动器供电。该检验证真实11000多个营运小时后电缆的衔接无缺，由此DNV GL颁发了型式认可证书。

DNV GL issues first type approval for aluminium cables onboard ships 

As the competitive and economic pressure on the shipping and offshore industries continues to grow, owners, operators and yards are searching for every efficiency. To support its customers, DNV GL has developed the first type approval scheme for the use of aluminium cables and connectors onboard vessels.

“This type approval represents another first for the DNV GL rule set and demonstrates our commitment to moving classification forward to help our customers,” says Geir Dugstad, Senior Vice President, Director of Ship Classification & Technical Director at DNV GL - Maritime. “Electrification is playing an increasingly important role in ship propulsion and this new type approval can help to reduce costs and improve sustainability.”

DNV GL’s new type approvals for aluminum cables and connectors allow expensive copper to be replaced with aluminum. The cost savings can be significant – with the price of aluminium in 2018, approximately one third that of copper.

“Traditionally, power cables for marine use have been made with copper,” explains Ivar Bull, DNV GL – Maritime. “Copper is an ideal electrical conductor of course, but the price of copper has been rising sharply over the last several decades – putting increasing cost pressures on the maritime industry. At the same time, electric propulsion is becoming more widespread in shipping, which will increase the demand and importance of finding more economical power cables.”

Aluminum’s lower conductivity means that a thicker cable is required, but this is compensated for by an overall lower weight. For example, a typical offshore support vessel may have 60 tons of copper cables installed. If these were replaced with aluminum, the weight would fall to 30 tons. But even with the price of special high quality terminations factored in, the overall estimated saving from switching to aluminum from copper is 50 per cent. Lighter cables also result in easier installation for the ship builder and lower material transport costs. Finally, a vessel with aluminium rather than copper cables, is lighter and more fuel efficient – resulting in lower operational costs.

The use of aluminium cables has been tested for the past three years in a pilot installation onboard the Bibby Offshore owned, Olympic offshore managed, Olympic Artemis, a multi-purpose offshore support vessel. The cables have been used to supply power to one of the vessel’s thrusters.

Recently, DNV GL experts, together with representatives from the cable manufacturer Amo Specialkabel AB, checked the aluminum cables onboard Olympic Artemis with a thermographic camera. Urban Sandberg, Technical manager at Amokabel, said: “Amo Specialkabel’s ambition is to be innovative and market leading when it comes to environmental and technical solutions for the marine market.”

The survey confirmed perfect connections after more than 11,000 operating hours and DNV GL was then able to issue the type approvals.