The selection error of ship power distribution system may lead to power redundancy or insufficient capacity. Shunfan Ship Electrical Factory proposes a three-dimensional decision model: the dimension of ship characteristics requires bulk carriers to focus on strengthening dust prevention design (IP56 protection level), such as the SF-MDP series with built-in air filtration system, which extends the filter replacement cycle to 6000 hours; LNG transport ships must meet the explosion-proof requirements of Chapter 11 of the IGF CODE and use Ex d IIC T4 certified control consoles. The operational route dimension requires targeted response to environmental challenges – polar routes need to be equipped with heating type circuit breakers that start at -50 ℃ low temperature, equatorial routes use 150% bus redundancy design to compensate for high temperature capacity reduction, and nearshore vessels need to be equipped with shore power boxes with mechanical interlocking to achieve rapid switching within 15 seconds.

Energy efficiency regulations have become the third major decision-making factor. To meet the EEXI standards of the International Maritime Organization (IMO), ships must be equipped with a Class A power management system (PMS). Shunfan Intelligent PMS reduces fuel consumption by 7.3% through dynamic adjustment of generator load; At the same time, it is equipped with an active filter APF-400 series, which suppresses the current harmonic distortion rate (THDi) to within 5%, avoiding the reduction of equipment life caused by harmonic overheating.