The scenario
A petrochemical refinery requires reliable power distribution with dual utility feeds and backup diesel generators. Power is stepped down from 11kV to 4.16kV for large motor loads and further to 480V for auxiliary services.
What is in this drawing
Read the decisions behind it.
01
Use of dual utility feeds with bus tie for redundancy
02
Sizing of transformers (T1 and T2) for critical load handling
03
Selective location of motor loads and reactive compensation on 4.16kV buses
Suitable for brownfield plant expansions, critical process plants, and design of medium-voltage industrial distribution systems.
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