We are aiming to develop our first product to achieve a CE marking. So far i understand that there are a few directives like Low Voltage Directive (LVD), ROHS, EMC, etc, which can be implemented by sticking to harmonized standards (e.g.:EN55022 for the EMC directive). My problem at this point is that there is a ton of harmonized standards (especially concerning the LVD) and I am not sure how to determine which of them is relevant to comply to the directives and achieve CE conformity.
The product is basically a computer system which is used for hardware in the loop simulation and inherited in a 19 inch rack system. It will be supplied from mains, the main power supply will be a purchased part though. There will be more or less hazardous DC rails inside (~100V). Almost everything else inside the 19 inch box was developed in house years ago.
Is it generally the right approach to determine the relevant directives and then looking for the most suitable harmonized standards to fulfill the directives? And if yes how to determine which standards are relevant?