ISO 1466:1973

Name: ISO 1466:1973 — Lever-operated manual switches for aircraft — Performance requirements
SKU: ISO 1466:1973
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Lever-operated manual switches for aircraft — Performance requirements

Название (английский):

ISO 1466:1973

Lever-operated manual switches for aircraft — Performance requirements

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 8
Дата публикации:: 1 сентября 1973 г.
Издание:: ISO IS 1466 edition 1 version 1
ICS:: 49.060

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Описание (английский):

Gives the requirements for two classes of single-hole fixing switches for use in nominal 28 V d. c. and 115/200 V three-phase, 400 Hz a.c. systems. Class 1 switches are sealed and are suitable for higher altitude and temperature conditions than are Class 2 switches, which are sealed only at the lever entry. Furthermore, gives requirements for dimensions, operation, construction, voltage and current ratings, environment, tests, type tests, production tests, quality tests, declarations and marking.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 1466:1973 - Lever-operated manual switches for aircraft - Performance requirements defines performance, construction and test requirements for single-hole fixing, lever-operated manual switches used in aircraft electrical systems. The standard covers two classes of switches: Class 1 (sealed - high altitude/temperature use) and Class 2 (sealed only at lever entry - lower altitude/temperature use), and applies to nominal 28 V d.c. and 115/200 V three‑phase, 400 Hz a.c. systems. It specifies dimensions, operation, electrical ratings, environmental performance, type and production tests, marking and declarations.

Key Topics and technical requirements

Design & dimensions

Single-hole mounting per ISO/R 493; lever movement in a plane at right angles to the panel.
Terminations by screws (M4 x 0.7 or No.6 UNC) able to accept two crimped tag‑type terminations.

Classes & environmental limits

Class 1: suitable up to 21 400 m altitude and −40 to +70 °C (resists −65 °C storage).
Class 2: suitable up to 6 100 m (occasional use to 18 300 m) and −20 to +55 °C (resists −40 °C storage).

Operation & mechanical

Positive lever action; angular travel nominally 18–23° from centre with ±2° tolerance.
Operating force declared by manufacturer; nominal force between 4.5 N and 45 N (max not > 100% above min).
Lever must resist 90 N steady force without damage; locking and release forces defined.

Electrical ratings

Suitable for 28 V d.c. and 115/200 V, 400 Hz a.c.; must operate down to 4 V.
Nominal current ratings include 15 A resistive, 10 A inductive, lamp-load ratings (7.5 A at 28 V; 2.5 A at 200 V).
Inductive load characteristics specified (e.g., 28 V d.c. - 10 A, 40 mH).

Tests & performance

Type and production tests: mechanical strength, operating forces, endurance (50 000+ cycles electrical, 100 000 mechanical cycles for endurance subtests), insulation and high-voltage tests (1 500 V r.m.s.), voltage drop limits (≤100 mV normally; ≤150 mV in some checks), insulation resistance (≥100 MΩ after HV test).
Temperature rise limits for accessible parts and conductors; sealing and resistance to environmental factors including vibration and climatic conditions.

Applications - who uses this standard

Aircraft component manufacturers and electrical switch designers (design verification and acceptance).

Avionics engineers and systems integrators selecting panel switches for cockpit and equipment panels.

Certification authorities and approvals bodies for type testing and compliance evidence.

Maintenance, repair and overhaul (MRO) organisations specifying replacement parts that meet aircraft performance requirements.

Related standards

ISO/R 493 - Dimensions for single‑hole mounting, lever‑operated switches for aircraft.

ISO 1540 - Aircraft electrical power systems - Characteristics.

ISO documents on aircraft environmental and operational conditions (referenced for climatic and vibration tests).

Keywords: ISO 1466:1973, lever-operated manual switches, aircraft switches, performance requirements, electrical ratings, environmental tests, type tests, aviation components.

ISO 1466:1973

Abstract

Похожие стандарты

Overview

Key Topics and technical requirements

Applications - who uses this standard

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