IEC 63132-1-2020 PDF

Full title and description

Guidance for installation procedures and tolerances of hydroelectric machines - Part 1: General aspects. This document gives general guidance on suitable installation procedures and recommended tolerances for the on-site assembly of hydroelectric turbines and generators, presents a typical assembly sequence and highlights responsibilities of manufacturers and installation parties.

Abstract

IEC 63132-1:2020 establishes general, practice-based recommendations for the mechanical installation and dimensional tolerances of hydroelectric machines. It provides a generic installation flowchart, identifies key steps, measurement and inspection points, and explains the boundaries where manufacturer-supplied drawings and contractual agreement take precedence. The document excludes small-hydro and refurbishment-only installation specifics and does not cover matters that are purely commercial unless they are inextricably linked to installation.

General information

• Status: International Standard (active/adopted as EN IEC in many countries).
• Publication date: 20 April 2020.
• Publisher: International Electrotechnical Commission (IEC), TC 4 (Hydraulic turbines).
• ICS / categories: 27.140 (Hydraulic energy engineering).
• Edition / version: Edition 1.0 (2020).
• Number of pages: 53 pages (base IEC publication).

Scope

Provides general guidance for installation procedures and tolerances of hydroelectric machines and presents a typical assembly sequence. The scope is deliberately generic to cover a range of machine sizes and layouts; it recognises that actual assembly sequences and tolerances may vary with machine design, powerhouse layout and delivery schedules. The document is intended to be contractually binding only where agreed by the contracting parties. Installations for refurbishment projects or for small hydro are excluded from the scope.

Key topics and requirements

• Generic installation flowchart and step-by-step assembly sequences for embedded parts and mechanical components.
• Recommended dimensional checks and tolerance tables for critical interfaces (concentricity, circularity, elevation, level, parallelism and runout) with measurement-location guidance.
• Guidance on foundation, embedment and grouting procedures and handover interfaces between civil and mechanical works.
• Alignment, shaft coupling and clearance checks between turbine and generator assemblies.
• Inspection, testing and quality control steps (dimensional inspections, pressure tests where applicable, cleaning, corrosion protection, and pre‑commissioning checks).
• Clarification of manufacturer responsibilities: supplier drawings and principal dimensions prevail for vendor‑specific components; the standard provides general tolerances based on best practice rather than supplier‑specific guarantees.
• Notes on limitations and exclusions (e.g., brushless excitation not covered in generator-specific parts; refurbishment and small-hydro exclusions when stated).

Typical use and users

Used by hydro project owners, OEMs (turbine and generator manufacturers), site installation contractors, mechanical fitters, alignment and commissioning engineers, and civil/structural engineers who coordinate foundations and embedded parts. The guidance is commonly referenced when specifying installation sequences, tolerances in contracts, and commissioning checklists.

Related standards

IEC 63132 is a multipart series; complementary parts addressing specific machine types and components include: Part 2 — Guidance for installation procedures and tolerances of vertical generators (IEC 63132-2:2020), Part 3 — Vertical Francis turbines or pump‑turbines (IEC 63132-3:2020), Part 4 — Vertical Kaplan or propeller turbines (EN/IEC 63132-4:2020), and later parts such as Part 5 covering bulb turbines and generators (IEC 63132-5, published 2023). These parts provide machine- or component-specific flowcharts, tolerance tables and step sequences that expand on the general aspects given in Part 1.

Keywords

installation procedures; tolerances; hydroelectric machines; turbines; generators; alignment; assembly sequence; embedded parts; grouting; commissioning; dimensional checks.

FAQ

Q: What is this standard?

A: IEC 63132-1:2020 is the first part of a multipart international standard giving general guidance on installation procedures and recommended tolerances for hydroelectric machines.

Q: What does it cover?

A: It covers general installation flowcharts, recommended measurement and inspection points, suggested dimensional tolerances (concentricity, runout, level, parallelism, etc.), responsibilities for supplier data and interfaces between civil and mechanical works. It does not replace supplier drawings or contractual agreements and excludes small-hydro/refurbishment-specific procedures unless expressly adopted.

Q: Who typically uses it?

A: Project owners, turbine/generator manufacturers, construction and installation contractors, alignment and commissioning teams, and engineers responsible for civil‑mechanical interfaces. It is used for specifying installation requirements and acceptance checks.

Q: Is it current or superseded?

A: IEC 63132-1:2020 is the current first edition published in 2020; the IEC webstore lists the document with a stability date through 2026, after which it will be reconfirmed, revised or withdrawn as appropriate. Users should check national adoptions (EN IEC versions) for any national implementation notes.

Q: Is it part of a series?

A: Yes — IEC 63132 is a multipart series. Part 1 provides general aspects; other parts (for example Parts 2, 3, 4 and 5) provide guidance specific to vertical generators, vertical Francis turbines, Kaplan/propeller turbines and bulb turbines/generators respectively.

Q: What are the key keywords?

A: Installation, tolerances, hydroelectric machines, turbine assembly, generator installation, alignment, embedded parts, grouting, commissioning, dimensional checks.