Development of VDE-Application Rules in VDE FNN (VDE-AR-N 4000 formerly N100)
Application Rules are developed according to an established procedure defined on VDE 0022 and VDE-AR-N 4000 (N 100). VDE-AR-N 4000 (N 100) describes the principles and procedures for the development of practice-oriented Application Rules by VDE FNN.
Opportunities for participation
The relevant parties working on the drafting of rules are all equally involved in committee work. "Relevant parties" here refers to manufacturers, network operators, plant operators, academic institutions, authorities, testing institutes and industry associations. When appointing members, VDE FNN liaises mainly with professional bodies who then nominate their experts to work in committees at VDE FNN. These bodies often agree on a joint representative for each department to represent their collective interests in the committee.
Comments, amendments and publication
After publishing the draft of an Application Rule, public experts have at least two months to submit their amendment proposals. The VDE draft portal is available to view and/or comment a draft (only in German). Once the deadline for objections has passed, submitted appeals are discussed in the relevant project group. Proponents of the objections are invited to discuss their views with the group. The prerequisite is that the objections are factual and sufficiently substantiated.
VDE-Application Rules are revised at least every five years. An earlier revision can be considered in the case of a fast-changing topic. If an Application Rule no longer corresponds to state-of-the-art technology, its contents are either revised or withdrawn.
VDE-AR-N 4000 is available free of charge for VDE FNN Members in the Members Area, in the “Downloads + Links” section, in the top right of the page.