Under normal conditions, the electric performance of the product is equal to other ordinary types of bus duct, please place order according to the technology parameters and current grade of the f.

本产品在正常条件下电气性能完全等同于普通其它型号母线槽，订货参照f。

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Phase difference between the e. m. f. of an alternator taken as a reference and that of another alternator or that of an infinite bus.

作为参考的交流电机电动势与另一台交流电机或无限大母线电动势之间的相角差。

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