AC/DC schematicsUnited States
ABB
Test switch connection and outline drawings
FT switch internal schematics, typical connection and mounting outlines. Match the exact test switch and CT circuit before using an example.
- Resource type
- AutoCAD drawings
- Access
- Public drawing selector
ProtectionUnited States
Schweitzer Engineering Laboratories
Transmission protection documentation
SEL-421 documentation includes protection application guides and technical papers. Use the guide for the selected scheme and relay version.
- Resource type
- Manuals and application guides
- Access
- Public index; individual manuals may require an account
ProtectionUnited States
Schweitzer Engineering Laboratories
Feeder protection documentation
The SEL-751 index lists an instruction manual, data sheet and protection technical papers. Confirm hardware options and terminal assignments against the selected relay documentation.
- Resource type
- Manuals, data sheets and technical papers
- Access
- Public index; individual manuals may require an account
Single line diagramsInternational
Schneider Electric
Keeping single-line diagrams accurate
A 2022 reference on single-line drawing information and ongoing maintenance. Use it to frame revision control, not to select project protection settings.
- Resource type
- PDF white paper
- Access
- Public document page
Distribution interfacesIEC-oriented
Schneider Electric
Electrical installation guide, 2018 edition
Low-voltage equipment selection and installation background. This is the 2018 edition and does not replace current local standards or HV design requirements.
- Resource type
- PDF guide
- Access
- Public document page
General arrangementsUnited States
USDA Rural Utilities Service
Rural substation design reference index
The index lists the Design Guide for Rural Substations dated June 2001. Treat it as historical reference and confirm current utility, code and project requirements.
- Resource type
- Design bulletins and PDFs
- Access
- Public government library
Protection and controlInternational
Schweitzer Engineering Laboratories
SEL-487E transformer protection documentation
Use the transformer relay manuals and application guides when collecting CT, protection and panel information. Match the relay variant and firmware before copying any connection detail.
- Resource type
- Manuals and application guides
- Access
- Public source page; confirm download access and terms
Protection and controlInternational
Schweitzer Engineering Laboratories
SEL-787 transformer relay documentation
Provides documentation for the original SEL-787, including an installation guide and label templates. Useful for existing installations; confirm whether the project uses this model or a later family variant.
- Resource type
- Manuals and installation guides
- Access
- Public source page; confirm download access and terms
Bay controlInternational
Schweitzer Engineering Laboratories
SEL-451 bay control documentation
Bay control and protection documentation, including application guidance for ring bus arrangements and voltage connections. Use it to identify control interfaces for the engineer's scheme.
- Resource type
- Manuals and application guides
- Access
- Public source page; confirm download access and terms
Automation and I/OInternational
Schweitzer Engineering Laboratories
SEL-2440 discrete automation documentation
Documentation for a discrete automation controller, including distributed data acquisition guidance. Useful when assembling I/O schedules and control-panel interfaces; confirm the ordered hardware configuration.
- Resource type
- Manuals and application guides
- Access
- Public source page; confirm download access and terms
MeteringInternational
Schweitzer Engineering Laboratories
SEL-735 metering documentation
Metering manuals, quick-start guidance and accessories information. Use these when collecting meter supply, CT/VT and communications interfaces for the drawing package.
- Resource type
- Manuals and installation guides
- Access
- Public source page; confirm download access and terms
Recloser interfacesInternational
Schweitzer Engineering Laboratories
SEL-651R recloser control documentation
Documentation for the advanced recloser control. Confirm the recloser, control variant and connection arrangement before using it to prepare interface and cable records.
- Resource type
- Manuals and data sheets
- Access
- Public source page; confirm download access and terms
Protection and controlInternational
Schweitzer Engineering Laboratories
SEL-351 protection system documentation
Protection-system manuals and application references. Useful for identifying the actual relay interfaces in an existing feeder panel; match the product revision and ordered options.
- Resource type
- Manuals and application guides
- Access
- Public source page; confirm download access and terms
Auxiliary systemsInternational
Schweitzer Engineering Laboratories
SEL-710 motor protection documentation
Motor protection references for electrical auxiliaries associated with a facility or substation. Use the correct variant's documentation when collecting motor-panel protection and terminal information.
- Resource type
- Manuals and application guides
- Access
- Public source page; confirm download access and terms
Time synchronizationInternational
Schweitzer Engineering Laboratories
SEL-2488 network clock documentation
Clock manuals, quick-start guidance and accessory information. Supports time-distribution interface and cable planning; verify the required connections with the selected clock and receiving devices.
- Resource type
- Manuals and installation guides
- Access
- Public source page; confirm download access and terms
Automation and I/OInternational
Schweitzer Engineering Laboratories
SEL-3530 automation controller documentation
Official documentation for the real-time automation controller and its configuration software. Useful when establishing controller interfaces and documentation requirements; do not assume it matches other RTAC models.
- Resource type
- Instruction manual
- Access
- Public source page; confirm download access and terms
Network drawings and standardsAustralia
Ausgrid
Technical document and drawing library
Search the operator's network standards and technical drawings for the relevant substation type. Confirm the current revision and project applicability with Ausgrid; drawings are not generic approval for another network.
- Resource type
- Searchable document library
- Access
- Public source page; confirm download access and terms
Transmission referencesAustralia
Western Power
Transmission network technical documentation
Transmission documentation includes substation buildings, primary equipment and communications references. Start here to establish the required source documents for a Western Power project.
- Resource type
- Standards and document library
- Access
- Public source page; confirm download access and terms
Network drawings and standardsAustralia
Western Power
Distribution standard arrangements
Contains standard equipment arrangements for the operator's distribution network. Use the drawing index to find the relevant installation arrangement and confirm the current issue with the operator.
- Resource type
- Standard drawing library
- Access
- Public source page; confirm download access and terms
Network drawings and standardsAustralia
Essential Energy
HV connection drawing and design references
Links to HV connection arrangements, zone substation design guidance and SCADA references. Confirm the connection scope and latest requirements through the operator's project process.
- Resource type
- Technical document library
- Access
- Public source page; confirm download access and terms
Network drawings and standardsAustralia
Energex
Contractor document and drawing library
Search for substation documents, as-constructed drawing guidance and padmount drawing templates. Select the relevant document type and verify its current issue and permitted use.
- Resource type
- Searchable document library
- Access
- Public source page; confirm download access and terms
Network drawings and standardsAustralia
CitiPower and Powercor
Access to technical standards and work practices
The operator's route for requesting technical standards and work practices. Useful when required drawing references are not public; access must be obtained from the operator.
- Resource type
- Access request page
- Access
- Request access from the operator
Network drawings and standardsUnited Kingdom
SSEN Distribution
Primary distribution substation reference library
Primary substation library with CAD drawing, plant, auxiliary supply and protection references. Accept the provider's access terms and confirm the documents required for the particular network project.
- Resource type
- Standards and document library
- Access
- Provider terms must be accepted; check individual document access
Network drawings and standardsUnited Kingdom
Electricity North West
Substation design drawings and document index
A substation design page with a drawing list, design document and individual drawing PDFs. Verify the selected drawing revision and local applicability before adding it to a project reference register.
- Resource type
- PDF drawing library
- Access
- Public source page; confirm download access and terms
Network drawings and standardsUnited Kingdom
UK Power Networks
Competition in connections document library
Official starting point for the operator's connection design documentation. Follow the competition-in-connections library and obtain the current substation documents required for the proposed works.
- Resource type
- Technical document library
- Access
- Public source page; confirm download access and terms
Network drawings and standardsUnited Kingdom
National Grid Electricity Distribution
Connection engineering and record requirements
Links to engineering documents for connection providers, including industrial and commercial installation records. Read the operator-specific appendices alongside the applicable framework documents.
- Resource type
- Technical document library
- Access
- Public source page; confirm download access and terms
Network drawings and standardsAustralia
SA Power Networks
Contractor access to network standards and e-drawings
Requires approved contractor access. The provider states that its e-drawings are for assets vested back to SA Power Networks; confirm eligibility and permitted use before requesting them.
- Resource type
- Registration and access portal
- Access
- Registration and operator approval required; restricted asset use
Protection and controlInternational
ABB
REF615 feeder protection technical documentation
Provides feeder relay technical documentation and application manuals. Match the hardware, configuration and product revision before using connection information in protection-panel drawings.
- Resource type
- Manuals and technical portal
- Access
- Public source page; confirm download access and terms
Primary layout and documentationAustralia
Transgrid
Substation primary design reference
Includes drawing and documentation topics alongside primary layout guidance. The linked edition is general guidance from 2021; obtain the operator's current project requirements and requested CAD references.
- Resource type
- PDF design reference
- Access
- Public source page; confirm download access and terms
Protection and controlAustralia
Transgrid
Secondary systems design reference
Outlines secondary-system design and documentation topics for the operator's connections. Use it to frame protection, control and auxiliary-supply information requests, then confirm current project requirements.
- Resource type
- PDF design reference
- Access
- Public source page; confirm download access and terms