船舶电气安装 第302-2部分：低压开关设备和控制设备组合 船舶电力

[中文适用范围]： IEC 60092-302-2:2025 规定了低压船舶电力开关设备和控制设备组件（mpsc组件）的具体要求，如下：- 额定电压不超过1000 V AC或1500 V DC的带外壳的固定式组件；- 用于与电力的生成、分配和转换以及对用电设备进行控制的组件。由于船舶应用和断电带来的风险，已额外应用了安全因素，以减少故障的风险，例如在间隙距离上增加了额外的安全系数。本文件适用于所有组件，无论它们是一次性设计、制造和验证的，还是完全标准化并批量制造的。mpsc组件的制造或组装，或两者皆可由原始制造商以外的其他方进行。本文件不适用于单个装置和自成一体的组件，例如符合相关产品标准的电机启动器、熔断开关、电子设备等。第二版取消并替代了2019年发布的第一版。本版构成技术修订。与前一版相比，本版包括以下重大技术更改：a) 根据IEC 61439-1:2020和IEC 61439-2:2020的更新条款进行了修订和更新，并正确引用了这些条款；b) 增加了对船舶应用需要特别考虑的解释；c) 图201已更新；d) 对爬电距离和间隙距离的“安全系数”进行了调整。 [外文原描述]： IEC 60092-302-2:2025 defines the specific requirements of low voltage marine power switchgear and controlgear assemblies (mpsc-assemblies) as follows: - stationary assemblies with enclosure for which the rated voltage does not exceed 1 000 V AC or 1500 V DC; - assemblies intended for use in conjunction with the power generation, distribution and conversion of electric energy, and for the control of electric energy consuming equipment. Due to the marine application and the risks associated with loss of power, additional safety factors have been applied to minimise the risk of failure, such as applying an additional safety factor on clearance distances. This document applies to all assemblies whether they are designed, manufactured and verified on a one-off basis or fully standardised and manufactured in quantity. Either the manufacture or assembly, or both, of the MPSC assembly can be carried out by others than the original manufacturer. This document does not apply to individual devices and self-contained components, such as motor starters, fuse switches, electronic equipment, which comply with the relevant product standards. This second edition cancels and replaces the first edition published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) amended and updated in line with, and correctly referenced to the updated clauses of IEC 61439-1:2020 and IEC 61439-2:2020; b) explanation of the need to special consideration for marine applications added; c) Figure 201 updated; d) adjustment has been made to the "safety factors" for creepage and clearance distances.