IEC 63132-2-2020 pdf download.Guidance for installation procedures and tolerances of hydroelectric machines – Part 2: Vertical generators (IEC 63132-2:2020).
The purpose of this part of IEC 631 32 is to establish, in a general way, suitable procedures and tolerances for installation of generator. This document presents a typical assembly. There are many possible ways to assemble a unit. The size of the machines, design of the machines, layout of the powerhouse or delivery schedule of the components are some of the elements that could result in additional steps, the elimination of some steps and/or assembly sequences. It is understood that a publication of this type will be binding only if, and to the extent that, both contracting parties have agreed upon it. This document excludes matters of purely commercial interest, except those inextricably bound up with the conduct of installation. This document applies to vertical generators according to IEC 60034-7 1 . The tolerances in this document have been established upon best practices and experience, although it is recognized that other standards specify different tolerances. Brushless excitation system is not included in this document. Wherever this document specifies that documents, drawings or information is supplied by a manufacturer (or by manufacturers), each individual manufacturer will furnish the appropriate information for their own supply only.
2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60034-7:-, Rotating electrical machines – Part 7: Classification of types of constructions, mounting arrangements and terminal box position (IM Code) 2
3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Preparation
Embedded parts such as piping and foundation plates are covered in the turbine embedded parts.
5 Installation flowchart
The installation flowchart of this document showed in Figure 1 is mainly based on a vertical generator having its thrust bearing under the rotor. If the generator has the thrust bearing above the rotor or supported by the head cover, some corrections to the flowchart will be necessary.
6 Steps
6.1 Step 1 : Turbine shaft free
See the relevant turbine part of this document.
6.2 Step 2: Generator foundation check
a) Objective of work in the step
– Check the foundations for the upper and/or lower brackets (if applicable) and the stator.
– Check the openings for cables/bars for phase terminals and neutral point.
– Check the embedded water and oil piping.
b) Explanation of work
– Check the foundations for the lower bracket, upper bracket and the stator.
– Check the dimension of the openings.
– Check the position of piping (if secondary stage concreting is used, also check).
– Install the foundation bolts.
– Install the sole plates.
c) Recommendations
The tolerances should be provided by the generator supplier.
– If a one-stage concreting method is used
The location in plan, elevation and/or locations of the foundation plates should be checked.
– If a two-stage concreting method is used
The location in plan, elevation and/or locations of the foundation bolts, embedded parts and block-outs should be checked.
d) Additional information
There are two different methods for embedding the sole plates; one-stage concreting or two- stage concreting method.IEC 63132-2 pdf download.