As a large-scale equipment supply & installation project which consisted of the supply of six 400KV transformers and the installation of 10 400KV transformers, with each transformer weighed nearly 150 tons. The installation project included dismantling and transporting of old transformers, installation of new transformers and relevant testing and debugging. The commencement date and completion date of the construction were: the procument & supply process lasted from December 2000 to November 2001 and the displacement & installation process lasted from November 2000 to September 2002.