Electrical Control panel - Basics & considerations for general arrangement (GA) drawings for Switchboard / control panel /Electrical Panels
Electrical Switchboard / control panel design
Basics on Switchboards & their General Arrangement drawings is a basic course to start learning about switchboard or their general arrangement drawings. We have covered various concepts that are required to design general arrangement drawings for switchboards. We start with very basics and eventually build on it.
This course is even suitable for students who want to learn about the switchboards or control panels.
Some of the topics that you will come across are:
1) Basic details on Switchboards & GA Drawings
What is GA drawing?
Where is it used ?
Why is it needed?
What are the inputs required to draw a GA drawing?
Variations in GA drawings
Basic Building blocks of a Switchboard or GA drawings.
2) Feeders / Modules/ Functional Units
Basics on feeders / modules /functional units.
Different feeder types : Incomer / Bus-coupler / Outgoings / Motor Feeders etc.
Basic considerations for feeder sizing / module sizing
Basic considerations for feeder placement
3) Switchgear - ·ACB's, MCCB's, Other plate mounted components, door mounted components, Heat generating equipments etc.
How they affect the feeder sizing and, in turn, affect the placement in Switchboards
Consideration for din-rail mounted components
Consideration for mounting and placement of CT's & PT's
Heat generating equipments
How interlocks affect feeder placement
4) IP Protection
What is IP protection?
Why is it important?
How is it important for Electrical Switchboards?
What is the significance of the 2 digits in IP rating?
IP's Applicable for Electrical Switchboards - Motor Control Centers and Power control centers
What various IP's mean: IP 42, IP 54, IP 55 etc.
How IPprotection impacts ventilation arrangement
5) Form of Segregation
What form of segregation is?
Why segregation is required ?
What are the various forms of segregation?
6) Different variations of panel design and how they define the GA drawing
7) Vertical dropper rating and sizing & diversity factor. And lastly Practice Exercise
How vertical dropper rating is decided.
What is diversity factor
SUP's & MUP's - Various possibilities
Why a certain design is selected
Total vertical count
Optimum feeder placement
