IEC 61000-4-5 Phases of three-phase power supply systems

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IEC 61000-4-5 Phases of three-phase power supply systems [Copy link]

Good morning, everyone. IEC 61000-4-5:2014 page 34 requires the applied surge phase for ac power ports five positive and five negative impulses each at 0, 90, 180 and at 270. For the three-phase power system phases L2-PE, L2-N, L3-PE, L3-N, 0, 90, 180 and at 270 are not at their peaks. For L2-N, L2-PE should be set to 120, 210, 300, 30 to make the interference voltage larger. And for L2-L3, which voltage phase has the largest interference?

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For L2-N and L2-PE, the setting angles should be 120, 210, 300, and 30 to increase the disturbance voltage.

How to say this

嗯哼哼

qwqwqw2088 posted on 2019-8-23 16:41 For L2-N and L2-PE, the setting should be 120, 210, 300, 30 to make the disturbance voltage larger. How to say this

The phase difference between the three-phase electricity is 120 degrees