HV drafting service
Substation single line diagrams
A substation SLD must make sources, buses, switching devices, transformers, protection references and outgoing circuits readable as one system. We draft that system from controlled engineering inputs and return editable files for review.
Illustrative example
What the reviewed deliverable contains
The rows below are synthetic. They show the structure of the output, not a client project.
| Item | Source | Review status |
|---|---|---|
| TX-01 | Markup M-01 | Rating shown as supplied |
| BUS-A | Design note D-03 | Section tie drafted |
| FDR-04 | Schedule S-02 | Protection reference open |
Deliverables
What you receive
- Native DWG and review PDF
- Equipment tags and ratings as supplied
- Cross-reference and open-item checks
- Drawing register entry
- Revision and change notes
Inputs
What we need from you
- Engineer markup or existing SLD
- Equipment and protection schedules
- Client drawing standard and title block
- Approved design basis and revision instructions
Checked by people
How the work moves from pack to issue
Register
We control the markup, reference files, title block and revision basis.
Draft
The SLD is drawn from supplied design intent, with gaps left visible for review.
Check
A human drafter checks drafting consistency before handover. The registered engineer on the job performs engineering sign-off.
Scope boundary
What is not included
- Engineering design decisions not supplied
- Protection study or settings calculation
- Registered engineer certification
- Issue without customer approval
Project enquiry
Discuss substation single line diagrams
Share the job type, bid stage, deliverables and closing date. A person reviews every enquiry.