GOST 20815-93 PDF

Full title and description

GOST 20815-93 — "Rotating electrical machines. Mechanical vibration of certain machines with shaft heights 56 mm and higher. Measurement, evaluation and limits of the vibration severity" (Russian: "Машины электрические вращающиеся. Механическая вибрация некоторых видов машин с высотой оси вращения 56 мм и более. Измерение, оценка и допустимые значения"). This interstate (GOST) standard reproduces the content of IEC 34‑14 (IEC 34‑14‑82) and specifies measurement procedures, measurement points, evaluation methods and permissible vibration limits for a class of rotating electrical machines.

Abstract

GOST 20815-93 defines how to measure and evaluate mechanical vibration on certain rotating electrical machines with shaft heights of 56 mm and above. It sets required test conditions, recommended measurement points and transducer characteristics, describes machine mounting conditions (free suspension or rigid mounting), and establishes permissible vibration severity limits and assessment rules. The standard was prepared as the national/interstate adoption of IEC guidance for rotating machines.

General information

• Status: Withdrawn / not in force in the Russian Federation (application ceased 1 January 2010; superseded by national adoption of IEC 60034‑14 series / GOST R IEC 60034‑14).
• Publication date: Designation year 1993 (GOST 20815-93); introduced into force 1 January 1997; printed editions dated 1996 (IPK Publishing).
• Publisher: IPK — Publishing House of Standards (Moscow) (printed editions 1996; later reprints in standards collections).
• ICS / categories: Rotating electrical machines / electrotechnical standards — classification around 29.160.01 (rotating machines).
• Edition / version: Original interstate edition (GOST 20815‑93) — adoption of IEC 34‑14 (1982) text; no later GOST edition under the same number (replaced in national practice by IEC‑aligned GOST R).
• Number of pages: Published printed text: 9 pages (some databases list alternative counts up to 11 depending on formatting/collection).

Scope

The standard applies to rotating electrical machines with shaft heights of 56 mm and higher (typically covering both DC machines and three‑phase machines within specified power and speed ranges). It covers measurement of vibration amplitude and spectrum, selection and mounting of vibration transducers, measurement locations on the machine housing, test operating conditions (supply and loading during measurement), and methods for evaluating measured values against permissible limits. The standard explicitly excludes certain machine types (for example, machines permanently installed on site, some collector three‑phase motors, single‑phase machines, hydrogenerators, permanent‑magnet generators, and machines rigidly coupled to prime movers or loads).

Key topics and requirements

• Definition of measurable vibration quantities (velocity, acceleration and amplitude, frequency bands) and required instruments (vibrodynamic sensors and filters).
• Specified measurement points and directions on machine housings for shaft heights 56–400 mm and for >400 mm (illustrated positions and test point layouts). (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Test conditions: machine supply (nominal voltage/frequency), loading state, rotational speed ranges (standard covers machines running between ~100 and 6000 rpm as indicated in the text).
• Mounting and installation categories (free/suspended mounting vs. rigid mounting) and how mounting affects measurement and acceptance criteria.
• Permissible vibration severity limits by machine size/type and evaluation rules for serviceability and acceptance.
• Normative references and harmonization to IEC/ISO vibration and measurement standards (links to related GOST/IEC documents).

Typical use and users

This standard was intended for machine designers, manufacturers, test laboratories, commissioning and maintenance engineers, quality and reliability specialists who measure and evaluate mechanical vibration of rotating electrical machines during factory tests and acceptance inspections. It has also been used by standards committees and technical libraries as a reference for vibration assessment methodology.

Related standards

GOST 20815‑93 is the interstate adoption of IEC 34‑14 (IEC 34‑14‑82) and in Russian practice has been replaced by later IEC‑aligned standards (for example, the GOST R / national adoptions of IEC 60034‑14). It also replaced earlier GOSTs dealing with vibration measurement and permissible vibration values (examples: ГОСТ 12379‑75, ГОСТ 20815‑88, ГОСТ 16921‑83) and references other vibration and measurement standards (e.g., ГОСТ 24346‑80 for vibration terms).

Keywords

rotating electrical machines; vibration; vibration measurement; vibration severity; measurement points; mounting conditions; permissible vibration limits; IEC 34‑14; GOST; shaft height 56 mm.

FAQ

Q: What is this standard?

A: GOST 20815‑93 is an interstate (GOST) standard that sets measurement, evaluation and permissible limits for mechanical vibration of certain rotating electrical machines with shaft heights of 56 mm and above; it reproduces / aligns with IEC 34‑14 content.

Q: What does it cover?

A: It covers vibration measurement quantities and instruments, defined measurement points and directions, machine mounting categories, test operating conditions (supply and speed), and permissible vibration severity limits and assessment rules. It also lists excluded machine types and normative references.

Q: Who typically uses it?

A: Machine manufacturers, test and certification laboratories, commissioning and maintenance teams, design engineers and standards bodies concerned with vibration testing and machine acceptance.

Q: Is it current or superseded?

A: In the Russian Federation the standard is no longer in force (application ceased 1 January 2010) and has been superseded in national practice by IEC‑aligned documents (notably GOST R adoptions of IEC 60034‑14 and related standards). For current regulatory practice users should consult the nationally adopted IEC 60034‑14 implementation (GOST R / GOST R IEC versions) and any later revisions.

Q: Is it part of a series?

A: Yes — it forms part of the set of standards addressing rotating electrical machines and vibration (references include earlier and related GOSTs and the parent IEC standard IEC 34‑14 / IEC 60034‑14). It is one document within the broader family of electrotechnical and vibration measurement standards.

Q: What are the key keywords?

A: Rotating machines; vibration measurement; permissible vibration; shaft height; measurement points; mounting; IEC 34‑14; GOST.