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ISO 2156:1974 PDF — Aircraft — Fire-resisting electrical cables — Methods of test — GOST Standards

//ISO 2156:1974

ISO 2156:1974

Name: ISO 2156:1974 — Aircraft — Fire-resisting electrical cables — Methods of test
SKU: ISO 2156:1974
Price: 25 EUR
Availability: InStock

Aircraft — Fire-resisting electrical cables — Methods of test

Название (английский):

ISO 2156:1974

Aircraft — Fire-resisting electrical cables — Methods of test

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 1 февраля 1974 г.
Издание:: ISO IS 2156 edition 1 version 1
ICS:: 49.060

Тип поставки:

Full version25 €Ask AI2 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:1 рабочий день

Цена:25 €

Описание (английский):

Specifies the tests suitable for establishing the compliance of cables with the performance requirements stated in ISO 2155. Is intended to serve as a basis for test specifications to be included in the relevant national standards when the Official Board of Inspection considers that existing tests are inadequate. The tests are classified in type tests only, type tests and routine productions tests and typ tests and production quality tests.

Abstract

Overview

Key topics and requirements

ISO 2156 specifies practical test procedures and measurable acceptance criteria, including:

Hot cutting test - evaluates resistance to sharp metallic contact. Uses a square‑edged knife (edge radius ≈ 0.40 mm) and progressive weight application; performed six times with 75 mm indexing between tests.
Ageing + immersion dielectric test - oven ageing (e.g., 168 h at 280 ± 5 °C for certain tests) followed by immersion and electrical insulation checks to confirm no cracking and retained marking legibility.
Humidity cycling - repeated cycles at 71 ± 2 °C and 95 ± 5% RH (24 h cycles repeated 15 times) with subsequent water immersion and electrical verification.
Resistance to aircraft fluids - immersion of samples in fuels, lubricants, hydraulic and de‑icing fluids for service‑representative durations and temperatures; samples cooled to −20 ± 5 °C and inspected for splitting, cracking and marking retention.
Abrasion test (Annex A) - running a “garnet” abrasive belt at ~1 520 ± 80 mm/min beneath the cable with graphite bands to indicate conductor exposure.
Spark tests - two spark test types to detect insulation perforation: selection and sizing of fault detectors; artificial‑fault calibration; and a water‑immersion AC test at 1 500 V r.m.s. for 1 minute.
Electrical & mechanical checks - conductor resistance per unit length (per ISO 1967), conductor diameter and lay (Annex B), wire elongation and breakage, insulation thickness, finished cable mass per length, cold coiling at −55 ± 2 °C, capillary/water uptake and accelerated ageing (e.g., 350 ± 5 °C for production quality tests).

Applications and users

ISO 2156 is used by:

Aircraft component manufacturers and cable suppliers specifying and validating fire‑resisting electrical cables.
Test laboratories performing aviation cable qualification and production verification.
Regulatory bodies and certification authorities referencing standardized test methods for airworthiness.
Engineers writing national standards or procurement specs that require consistent, repeatable cable testing.

Practical benefits include consistent safety verification against fire, abrasion, fluid exposure and environmental aging - critical for aircraft electrical system reliability.

Related standards

ISO 2155 - Aircraft - Fire-resisting electrical cables - Performance requirements (normative reference)
ISO 1967 - Aircraft - Electrical cables - Dimensions, conductor resistance and mass

Keywords: ISO 2156, fire-resisting electrical cables, aircraft cable tests, abrasion test, spark test, humidity cycling, hot cutting test, aviation cable testing.

Технические детали

Технический комитет: ISO/TC 20/SC 1 - Aerospace electrical requirements
SKU: ISO 2156:1974

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ISO 2156:1974

Abstract

Overview

Похожие стандарты

Key topics and requirements

Applications and users

Related standards

Технические детали

BS ISO 21550:2004

Photography. Electronic scanners for photographic images. Dynamic range measurements.

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