GOST 12177-79 PDF

Full title and description

GOST 12177-79 — "Cables, wires and cords. Methods of construction checking". Standard defining methods and procedures for inspecting and measuring the constructional characteristics of electrical cables, wires and cords (dimensions, thicknesses, lengths, armor and sheath measurements, sampling and test locations, and related measurement techniques).

Abstract

This standard specifies the procedural methods for checking the construction of cable products (including cables, wires and cords) during manufacture and inspection. It details sampling rules, measurement points and frequencies, measurement methods for outer diameters, circumferences, lengths, thicknesses of insulating and metallic elements (including gored and corrugated shells), and rules for recording results and determining conformity of measured parameters with specified design values.

General information

• Status: Listed as an active/implemented GOST (with later amendments recorded).
• Publication date: Approved 26 April 1979; date of introduction into force 1 January 1981.
• Publisher: State Committee for Standards of the USSR (Gosstandart); developed by the Ministry of Electrical Engineering Industry and Instrument Making (USSR).
• ICS / categories: Group E49 (cable and wire products); OKP 35 0000 (cable products classification).
• Edition / version: Original designation GOST 12177-79 (1979) with recorded amendments (examples: amendments noted in 1981, 1984, 1991, 1993 in database entries).
• Number of pages: Approximately 28 pages (typical electronic/print document length in standards catalogs).

Scope

Applies to inspection and verification procedures for the constructional parameters of electrical cables, wires and cords produced for industrial, utility and communication uses. The standard sets out how to select samples from production lengths, where to perform dimensional measurements, how to measure circumferences and diameters (including methods for spiral coverings and corrugated shells), thickness measurements for insulating and metallic layers, and acceptance of measurement results relative to specified design values. It is intended for use in factory production control and independent testing laboratories.

Key topics and requirements

• Sampling rules — number and location of samples taken from a constructional length and sampling from both ends and intermediate points.
• Measurement of outer dimensions — methods for measuring diameters, circumferences and lengths at specified intervals (e.g., three places at least 1000 mm apart).
• Thickness measurement — procedures for determining thicknesses of outer coverings, cushions, metallic shells and gaskets (including use of micrometers, measurement at multiple circumferential points, and treatment of spiral coverings).
• Metallic shell and armor checks — sampling, cutting, flattening (where required) and measuring thickness in multiple points; special rules for corrugated or gored shells.
• Length and linear measurements — methods for production-line length verification using measuring devices, measuring tapes or automatic measuring equipment.
• Recording and reporting — required test protocol contents (identification, reference to the standard, method deviations, density/physical parameters where relevant, test results and date).
• Amendments and controlled updates — the standard text includes recorded amendments and prescribed periodic review intervals.

Typical use and users

Primary users are cable and wire manufacturers (for in-process and final inspection), quality-control and metrology laboratories, procurement and acceptance inspectors for utilities and industrial customers, certification bodies and standardization organizations that perform conformity assessment of cable constructional parameters. Maintenance and repair organizations may use the methods for verifying replacement cable characteristics.

Related standards

GOST 12177-79 is used alongside other cable and wire standards covering specifications and tests (examples include GOST 11092-82, GOST 11326.0-78, GOST 16442-80, GOST 17301-79 and numerous specialized specifications for power, communication and control cables). These related standards define technical requirements, material specifications and performance tests that complement the construction-checking methods in GOST 12177-79.

Keywords

cables, wires, cords, construction checking, dimensional measurement, thickness measurement, sampling, metallic sheath, armor, measurement procedures, GOST 12177-79.

FAQ

Q: What is this standard?

A: GOST 12177-79 is a Soviet-era national standard titled "Cables, wires and cords. Methods of construction checking" that specifies procedures and methods for inspecting and measuring the constructional parameters of cable products.

Q: What does it cover?

A: It covers sampling rules, locations and numbers of measurements, methods for measuring outer dimensions, circumferences, lengths and thicknesses of insulating and metallic elements (including rules for corrugated and spiral coverings), and requirements for recording test results.

Q: Who typically uses it?

A: Cable and wire manufacturers, factory quality-control departments, independent test laboratories, acceptance inspectors for utilities and industrial buyers, and certification bodies involved in mechanical/constructional verification of cable products.

Q: Is it current or superseded?

A: The document is the original GOST 12177-79 text (approved in 1979 and introduced in 1981) and is recorded in contemporary standards catalogs with amendments. National standards catalog entries list it as implemented/active in databases; users should verify current legal/regulatory status with the relevant national standards body or up-to-date standards database before relying on it for regulatory compliance or procurement.

Q: Is it part of a series?

A: It belongs to the body of cable- and wire-related GOST standards and is commonly referenced together with specification and test standards for cables (other GOSTs for cable specifications, insulation tests and mechanical/electrical tests). It is one procedural/measurement element within the broader suite of cable standards.

Q: What are the key keywords?

A: Cables; wires; cords; construction checking; dimensional measurement; thickness; metallic sheath; sampling; measurement procedure; GOST 12177-79.