NOV 380/220V 3PH Main SWBD – Explanation

NOV

• National Oilwell Varco

• Equipment manufacturer or system integrator for drilling or oilfield packages.

380/220V

This describes the system voltage:

• 380 V → Line-to-Line voltage (phase-to-phase)

• 220 V → Line-to-Neutral voltage

This indicates a wye (star) system with neutral.

Example measurements:

Common outside North America.

3PH

• Three-phase power system

• Used for motors, large loads, and industrial equipment.

Main SWBD

Main SWBD = Main Switchboard

This is the primary electrical distribution board that receives power from:

• Utility

• Generator

• Transformer

Then distributes power to:

• MCCs

• Sub-switchboards

• Lighting panels

• Equipment feeders

Typical Specs – 380/220 V Main Switchboard

Electrical Ratings