Their principles and characteristics are analyzed and compared in this paper.
2
叙述了高阻差动继电器用电流互感器的用途、工作原理和主要要求。
The uses, operating principle and main requirements of the current transformer for differential relay with high impedance were described.
3
简要介绍了PIC单片机的基本特点以及由PIC单片机构成的漏电继电器的工作原理及其软件和硬件设计。
The basic features of PIC single chip and the operation principle of leakage relay made by PIC single chip and its hardware design and software design were introduced.
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