2 Applied Standards2.1 IEC60372 “IEC Standard for Testing of Electric Equipment for Electric Installation Engineering”.2.2 GB50150-2016 “Electric equipment installation engineering Standard for hand-over test of electric equipment”.2.3 Vietnam coastal phase II coal fired power plant 2 × 660mw project design drawings, etc2.4 Preventive Test Regulations for Power Equipment" DL/T596-1996; 2.5. "Inspection Regulations for Relay Protection and Power Grid Security Automatic Devices" DL/T995-2016;