System boundary
Identify incomers, bus sections, outgoing feeders and the interfaces with upstream and downstream equipment.
Solution planning
Primary distribution
Define medium-voltage distribution boundaries, protection requirements and equipment interfaces before requesting a configuration.
At a glance
Primary distribution
Primary distribution equipment must be considered as part of the wider system. Incoming supply, fault duty, protection philosophy, feeder functions and installation conditions shape the equipment proposal.
Equipment selection
Match the equipment to the electrical system
Primary distribution equipment must be considered as part of the wider system. Incoming supply, fault duty, protection philosophy, feeder functions and installation conditions shape the equipment proposal.
Project information
- Single-line diagram and ownership boundary
- System voltage, frequency and short-circuit duty
- Busbar and feeder current requirements
- Protection, metering and control functions
- Installation environment and cable entry
Selection details
Key considerations for this application
Protection intent
State the required protection and control functions, including available coordination information.
Installation constraints
Provide room dimensions, access routes, cable approach and environmental conditions.