| 1. | Pairs no . core no . unit conductor section
填写对数单元芯数导体截面 |
| 2. | 2conductor section mm
2导体截面积mm |
| 3. | Connecting devices - electrical copper conductors ; safety requirements for screw - type and screwless - type clamping units - part 2 : particular requirements for clamping units for conductors from 35 mm 2 up to 300 mm 2 included
连接器件.电气铜导体用有螺纹和无螺纹的线夹部件的安全要求.第2部分:导体截面为35mm2 300mm2的特殊要求 |
| 4. | Connecting devices - electrical copper conductors - safety requirements for screw - type and screwless - type clamping units - particular requirements for clamping units for conductors above 35 mm2 up to 300 mm2 included
连接器件.铜导线.有螺纹式和无螺纹式夹紧装置的安全要求.导体截面为35平方毫米至300平方毫米的夹紧装置的特殊要求 |
| 5. | Connecting devices - electrical copper conductors - safety requirements for screw - type and screwless - type clamping units - part 2 : particular requirements for clamping units for conductors above 35 mm2 up to 300 mm2 included
连接器件.电气铜导体.有螺纹和无螺纹线夹部件的安全要求.第2部分:导体截面大于35mm小于等于300mm的线夹部件的特殊要求 |
| 6. | Skin effect is the tendency for alternating current to flow near the sruface of the conductor in lieu of flowing in a manner as to utilize the entire cross - sectional area of the conductor . this phenomenon causes the resistance of the conductor to increase . the magnetic field associated with the current in the conductor causes eddy currents near the center of the conductor which opposes the flow of the main current near the center of the conductor . the main current flow is forced further to the surface as the frequency of the alternating current increase
表面疚是指交流电流较倾向于导体的表面传导而非流经整个导体截面的趋势，这些现象会造成导体的电阻提高，与导体中的电流有关的磁场在导体中心部位产生过电流而阻碍了中心部位的主要电流，当交流电的频率增加时，主要电流的流向会进一步被推挤到导体表面。 |
