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我国第一套高频保护对调专用通话装置在许昌继电器厂研制成功,并于去年十二月九日通过省级技术鉴定。随着我国输电线路的增多,在选择高频保护调试时所用的通讯工具显得越来越重要。过去采用的有线通话,既不经济,又不及时;无线通话,也因报话机功率小、干扰大,不适宜长距离输电线路所用;有线载波机既笨重,又因频率与高频保护频率重叠,影响输电线路的安全运行。为此许昌继电器
China’s first set of high-frequency protection of special call device in Xuchang relay plant developed successfully, and on December 9 last year passed the provincial-level technical appraisal. With the increase of transmission lines in our country, it is more and more important to select the communication tools used in high-frequency protection and debugging. In the past, the use of wired calls was neither economical nor timely. Wireless calls were also used due to the small power of the newspaper machine and large interference, which were not suitable for long-distance transmission lines. The cable carrier was heavy and bulky. Because of the overlap of frequencies and high-frequency protection frequencies, Affect the safe operation of transmission lines. Xuchang relay for this purpose