2016 archive

Two armour layers with separation

Posted on 2016-09-02

Calculating the ampacity of a cable system correctly starts with the precise modeling of the cable. The user shall be able to model a cable as close to reality as possible, visually, electrically and thermally. As a result from our participation at the Cigré 2016 in Paris, we have now introduced a separation layer between the two metallic armour layers.

Cyclic loading with daily, weekly, and yearly load factors

Posted on 2016-08-16

Using the Neher McGrath method for the calculation of the rating of buried cables under cyclic loading conditions allows for a daily, weekly, and yearly load factor in the same calculation.

Variation of spacing between sheath bonding points

Posted on 2016-07-03

For single-core cable circuits with sheaths solidly bonded at both ends and possibly at intermediate points, the circulating currents and the resulting losses increase as the spacing increases, and it is advisable to use as close a spacing as possible. The optimum spacing is achieved by considering both losses and mutual heating between cables.

Phase splitting

Posted on 2016-06-26

Phase splitting can be used to drastically reduce the magnetic fields of buried power cables. Also, the conductor cross-section can be less than half because the current is only half per split system and it can give a partial redundancy of about 60% or even more in case of a cable failure on one split system.

Cableizer at Cigre 2016

Posted on 2016-06-06

Meet the Cableizer team at CIGRE session 2016 at the Palais des Congrès in Paris, France

Cyclic loading

Posted on 2016-06-06

For the calculation of the rating of buried cables under cyclic loading conditions two main methods are used: The method according to IEC 60853 and the Neher McGrath method. The following post explains briefly the theory behind it and points out the additional features available in Cableizer.

Cableizer validation test suite 2016 Q1

Posted on 2016-03-19

Continuously validating Cableizer is a task we take serious. Our extensive test suite is a supportive tool to verify our calculations after modifications in the formulas or solver routine.