STB PDF

Electrical insulation systems. Procedures for thermal evaluation - Selection of the appropriate test method for evaluation and classification of electrical insulation systems. Original standard PD IEC TR 61857-2-2025 in PDF full version. Additional info + preview on request

Document status: Active

Electrical insulation systems. Thermal evaluation of modifications to an established electrical insulation system (EIS) - Clarification of electrical insulating materials (EIMs) and auxiliary materials. Original standard PD IEC TR 61858-3-2020 in PDF full version. Additional info + preview on request

Document status: Active

Instrument transformers - Guidance for application of current transformers in power system protection. Original standard PD IEC TR 61869-100-2017 in PDF full version. Additional info + preview on request

Document status: Active

Instrument transformers - Ferroresonance oscillations in substations with inductive voltage transformers. Original standard PD IEC TR 61869-102-2014 in PDF full version. Additional info + preview on request

Document status: Active

The technology roadmap for industry data dictionary structure, utilization and implementation. Original standard PD IEC TR 61908-2004 (2008) in PDF full version. Additional info + preview on request

Document status: Active

Live working. Guidelines for the installation of distribution line conductors. Stringing equipment and accessory items. Original standard PD IEC TR 61911-2003 in PDF full version. Additional info + preview on request

Document status: Replaced by STB PD IEC TR 61328-2024