1、_SAE Technical 6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSXEOLVKHGE 6$(WRDGYDQFHWKHVWDWHRIWHFKQLFDODQGHQJLQHHULQJVFLHQF es. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patenWLQIULQJHPHQWDULVLQJWKHUHIURPLVWKHVROHUHVSRQVLELO
2、LWRIWKHXVHU SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2017 SAE InternationalAll rights reserved. No part of this publication may be reproduced, stored
3、in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE.TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada)Tel: +1 724-776-4970 (outside USA)Fax: 724-776-0790Email:
4、CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on thisTechnical Report, please visithttp:/standards.sae.org/ARP4101/5AAEROSPACERECOMMENDED PRACTICEARP4101/5 REV. AIssued 1989-02Revised 2010-06Reaffirmed 2017-01Superseding ARP4101/5Aircraft Circuit
5、Breaker and Fuse ArrangementRATIONALEARP4101/5A has been reaffirmed to comply with the SAE five-year review policy.1. SCOPE This document recommends criteria for the location, arrangement and other requirements of aircraft circuit breakers and fuses on the flight deck. 2. REFERENCES 2.1 Documentatio
6、n This annex should be used in conjunction with: - SAE S-7 ARP4101, Flight Deck Layout and Facilities - SAE S-7 ARP4102, Flight Deck Panels, Controls, and Displays - SAE S-7 ARP4103, Flight Deck Lighting for Commercial Transport Aircraft 2.2 Definition 2.2.1 Circuit Breaker A circuit breaker is a re
7、settable circuit-protection device. This device may be a physical or virtual (electronic). Circuit breakers can be divided by function into four classes: - Control Circuit Breaker: A control circuit breaker is one whose function is to protect the wiring used to operate control devices, such as relay
8、s. - Power Circuit Breaker: A power circuit breaker, as distinguished from a control circuit breaker, is one whose function is to protect the wiring carrying the power to the equipment. - Remote Circuit Breaker: A remote circuit breaker is one which is not controllable by the crew during flight. Res
9、ettable Remote Circuit Breaker: A remote circuit breaker which is resettable from the normal crew station. - Virtual Circuit Breaker: An electronic system or device that provides similar protection and function to a physical circuit breaker.2.2.2 Fuse A fuse is a replaceable circuit protection devic
10、e utilizing the melting of a conductor for circuit interruption. 2.2.3 Limiter A “limiter“ is a type of fuse having a higher melting point and longer inverse-time characteristic than a standard fuse. 3. OPERATIONAL REQUIREMENTS 3.1 General 3.1.1 Nomenclature published in airframe manufacturers techn
11、ical material shall agree with corresponding nomenclature used on the flight deck to identify circuit breakers and fuses. 3.1.2 All circuit breakers shall be capable of being tripped and reset manually. A tripped circuit breaker must be unmistakably apparent from the station of the crew member(s) re
12、quired to observe it. All circuit breakers subject to accidental actuation due to their location must be protected against inadvertent tripping. 3.1.3 Unless other means of compliance can be demonstrated, circuit breakers and fuses essential to continued safe flight shall be remotely resettable or l
13、ocated so that tripped circuit breakers and open fuses are readily discernible and resettable or replaceable from the crews normal position in all operational lighting conditions. Systems incorporating virtual circuit breakers shall provide means for the crew to determine circuit breaker status in t
14、he event of a tripped or open condition. Reset of virtual circuit breakers shall be possible from the crews normal seating position under all operational lighting conditions 3.1.4 Circuit breakers and fuses of systems not essential to the operation of the aircraft may be located anywhere in the airc
15、raft provided that they can be inspected for tripped/open condition and are accessible in flight for resetting or replacement. Protective covers and placards discouraging unnecessary opening and closings of the circuits are desirable (examples: passenger reading lights, beverage heating, electric-sh
16、aver inverter). Circuit breakers and fuses in systems not usable while the aircraft is in self-powered operation need not comply. 3.1.5 It shall be possible for the flight crew from their normal position to readily identify those circuit breakers which intentionally have been pulled for system deact
17、ivation by maintenance for degraded flight dispatch; this also shall apply for supplemental indicating devices. 3.1.6 Limiters may be remotely located, provided that the limiter can be checked by noting the functioning of some dependent operating device or equipment. In the event that only non-opera
18、ting standby equipment (such as spare inverter) is supplied through the limiter, a failure-indicating device shall be located to conform to the requirements specified in 3.1.3. 4. PANELS 4.1 An area, or areas, consisting of one or more panels, shall be provided for location of circuit breakers and f
19、uses in compliance with 3.1.3 and 3.1.4. 4.2 The area designated for circuit breakers and fuses, where practical, should be grouped by system sets; subsets of which should be in AC and DC groupings. Physical separation of groupings within a given system which may be required by bus isolation conside
20、rations should be minimized. Within the set and subset groupings, essential circuit breakers and fuses shall be placed in the most conspicuous and accessible position. SAE INTERNATIONAL ARP4101/5A 2 OF 44.3 Circuit breaker panels shall incorporate a grid system of marking to identify the physical lo
21、cation of each circuit breaker on a given panel. Horizontal rows are to be lettered A, B, C from top to bottom (fwd to aft if located on overhead panel). Vertical rows are to be numbered 1, 2, 3 from left to right (see Figure 1). 4.4 Identifying placards shall be affixed above each circuit breaker o
22、r fuse. Groups, sets, or subsets of related circuit breakers or fuses shall be further identified by a conspicuous white boundary enclosing each such group, and appropriate nomenclature shall identify each such group. 4.5 Suitable lighting shall be provided for circuit breaker and fuse panels as per
23、 ARP4103. 5. CONTROLS 5.1 Circuit breakers, fuses and remote control circuit breaker indicators and controls shall be oriented from left to right, related to the crew member when facing the circuit breaker, fuse or control panel. 5.2 Actuation of circuit breakers of the switch type shall be consiste
24、nt for a specific aircraft model. Direction of actuation of circuit breakers of the “push-pull“ type shall be “push-for-on“ and “pull for off“. 5.3 Normal system operation shall not require the use of circuit breakers as control switches. 6. NOTES A change bar (|) located in the left margin is for t
25、he convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY SAE COMMITTEE S-7, FLIGHT DECK AND HANDLING QUALITIES STANDARDS FOR TRANSPORT AIRCRAFT SAE INTERNATIONAL ARP4101/5A 3 OF 4FIGURE 1 SAE INTERNATIONAL ARP4101/5A 4 OF 4
