Guodian Nanjing Automation Co., Ltd.


Contact Us

  • Address: No. 8, Spark Road, Pukou Hi-tech District, Nanjing City, Jiangsu Province, China
  • Tel: +86-25-51859229
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Being the cradle of China electric power automation equipment manufacture, SAC has long history in the R&D and manufacture in relay protection, RTU, automation control system. The growth history of SAC is the concentration of China power industry.

SAC is now becoming the biggest complete supplier of electric power automation technologies and products. It has rich accumulation of about seventy years with lots of FIRSTs in China and technology leaders worldwide. SAC is the famous brand in China's electric power system with bright future by the development of China electric power industry.

In the 1960s, the first transistor-based relay protection device of China

In the 1970s, the first comprehensive remote operation device of China;
The first manufacturer supplying 330kV substation transformer, bus and reactor and other static relay protection devices in complete sets in China

In the 1980s, the first microcomputer based line protection device of China

In the 1990s, the first generator protection device for units up to 600MW in China;
The first multi-layer distributed substation automation system of China

In 1999, the first digital protection device using 32-bit computer in China was developed and made

In 2004, the first digital photoelectrical transformer of China

In 2007, China's first digital substation automation solution

In 2008, SGT 756 transformer protection had been successfully put into operation in 1000kV Jin Southeast-Nanyang-Jingmen Ultra High Voltage Demonstration Project for exchange of trial operation experience

In 2009, Guilin Substation 500KV, the first digital substation of China in compliance with IEC 61850 standard, was put into operation. Electronic transformers and other smart devices from SAC were integrated into the substation

In 2010, China's first 220KV intelligent substation was put into operation