Selection guide for Switchyard & Substation
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Switchyard & Substation
- Select voltage level as per utility supply and contract demand.
- Choose VCB/SF6 breakers by rated and short-circuit current.
- Size CTs by burden (VA) and accuracy class for metering vs protection.
- Design earth mat for step and touch potential, not just resistance.
Links
Calculators: Switchyard 66/33/11 kV calculator · Power Transformer calculator · CT/PT & Protection Relays calculator · Earth Mat calculator · Gantry & Structures calculator
Catalogue categories: Switchgear, Transformers, Cables, Earthing
Products for this system
Products and services
Standards cited by number for reference; verify designs with a qualified engineer.