1. PD IEC/TR 60725:2012. Consideration of reference impedances and public supply network impedances for use in determining disturbance characteristics of electrical equipment having rated current ≤ 75 A per phase

2. PD IEC/TR 60787:2007. Application guide for the selection of high-voltage current-limiting fuse-links for transformer circuits

3. PD IEC/TR 60825-13:2011. Safety of laser products - Part 13: Measurements for classification of laser products

4. PD IEC/TR 60825-14:2004. Safety of laser products - Part 14: A user's guide

5. PD IEC/TR 60825-17:2015. Safety of laser products Part 17: Safety aspects for use of passive optical components and optical cables in high power optical fibre communication systems

6. PD IEC/TR 60865-2:2015. Short-circuit currents - Calculation of effects Part 2: Examples of calculation

7. PD IEC/TR 60893-4:2014. Insulating materials - Industrial rigid laminated sheets based on thermosetting resins for electrical purposes Part 4: Typical values

8. PD IEC/TR 60909-2:2008. Short-circuit currents in three-phase a.c. systems - Part 2: Data of electrical equipment for short-circuit current calculations

9. PD IEC/TR 60919-1:2010 + A1:2013. Performance of high-voltage direct current (HVDC) systems with line-commutated converters Part 1: Steady-state conditions

10. PD IEC/TR 60919-2:2008 + A1:2015. Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 2: Faults and switching