The Germany-based Siemens gave technical certification to Sinopec lubricant company on May 10, 2010 confirming SINOPEC Transformer Oils N25 and N45 technical capabilities. The N25 and N45 transformer oils can be widely applied to all power transformers, generators, traction transformers, rectifiers and relevant machinery equipment including transformers with the voltage grade above 170kV as specified in Siemens Code TUN 901 293 (revised 2007). This is yet another milestone in the history of SINOPEC transformer oils, which won highest-level of technical certification from the world-famous Siemens soon after winning the Swedish ABB technical certification.

Siemens is the world’s biggest electrical engineering and electronics company with innumerable transformer plants worldwide.