Lower the rated electrical capability of electrical apparatus.

降低电器设备的额定电能。

Familiar with low-voltage electrical apparatus like relay, contact, air breaker, etc.

熟悉继电器、触器和空气短路器等低压电器产品。

The calibration of heavy current tester for low voltage electrical apparatus was studyed.

研究了低压电器大电流试验装置的校准。

The amount of heat produced by this electrical apparatus is variable by turning a small handle.

这电热器所产生的热量可随着转动小把手而改变。

Finally, the selection of LV electrical apparatus in non grounded electrical network was given.

最后给出了不接地电网中低压电器的选择。