MEDIUM VOLTAGE SWITCHGEAR
SINGLE LINE DIAGRAM:
The single line diagram shows, by means of symbols and icons, at high
voltage and medium voltage levels, the general layout of the main elements
in the power supply network.
Depending on the FLS scope of supply the single line diagram shows the
following equipment:
• High voltage power supply system
• Main power transformers
• MV main switchgear
• MV substation switchgears
• Distribution transformers
• LV switchgears
• MV motors and drives
• Stand-by diesel generator set
• Metering and protection devices
• Power study output data
• Main power cables, - size, numbers and type
• Ratings of measuring transformers
• Verification of metering and protection devices.
• MCC division of motors and other electrical loads considering
requirements to process department, power distribution system and
transformer capacity