1. PD IEC/TR 62221:2012 Optical fibres - Measurement methods - Microbending sensitivity

2. PD IEC/TR 62222:2012. Fire performance of communication cables installed in buildings

3. PD IEC/TR 62263:2005. Live working - Guidelines for the installation and maintenance of optical fibre cables on overhead power lines

4. PD IEC/TR 62267-2:2011. Railway applications - Automated urban guided transport (AUGT) - Safety requirements Part 2: Hazard analysis at top system level

5. PD IEC/TR 62271-301:2009. High-voltage switchgear and controlgear Part 301: Dimensional standardisation of high-voltage terminals

6. PD IEC/TR 62271-305:2009. High-voltage switchgear and controlgear - Part 305: Capacitive current switching capability of air-insulated disconnectors for rated voltages above 52 kV

7. PD IEC/TR 62271-307:2015. High-voltage switchgear and controlgear Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV

8. PD IEC/TR 62283:2010. Optical fibres - Guidance for nuclear radiation tests

9. PD IEC/TR 62349:2014. Guidance of measurement methods and test procedures -Basic tests for polarization maintaining optical fibres

10. PD IEC/TR 62350:2006. Guidance for the correct use of residual current-operated protective devices (RCDs) for household and similar use