1. PD IEC/TR 62544:2011 + A1:2016. High-voltage direct current (HVDC) systems - Application of active filters

2. PD IEC/TR 62547:2013. Guideline for the measurement of high power damage sensitivity of single-mode fibre to bends - Guidance for interpretation of result

3. PD IEC/TR 62572-4:2013. Fibre optic active components and devices - Reliability standards Part 4: Guidelines for optical connector end-face cleaning methods for receptacle style optical transceivers

4. PD IEC/TR 62627-01:2016. Fibre optic interconnecting devices and passive components Part 01: Fibre optic connector cleaning methods

5. PD IEC/TR 62627-03-02:2011. Fibre optic interconnecting devices and passive components Part 03-02: Reliability – Report of high power transmission test of specified passive optical components

6. PD IEC/TR 62627-03-03:2013. Fibre optic interconnecting devices and passive components Part 03-03: Reliability - Report on high-power reliability for metal-doped optical fibre plug- style optical attenuators

7. PD IEC/TR 62627-03-04:2013. Fibre optic interconnecting devices and passive components Part 03-04: Reliability - Guideline for high power reliability of passive optical components

8. PD IEC/TR 62627-04:2012. Fibre optic interconnecting devices and passive components Part 04: Example of uncertainty calculation Measurement of the attenuation of an optical connector

9. PD IEC/TR 62627-05:2013. Fibre optic interconnecting devices and passive components Part 05: investigation on impact of contamination and scratches on optical performance of single-mode (SM) and multimode (MM) connectors

10. PD IEC/TR 62627-08:2016. Fibre optic interconnecting devices and passive components Part 08: Study of optical power blocking measurement methods for adaptors with an optical power blocking shutter