{"id":330435,"date":"2024-10-19T22:59:44","date_gmt":"2024-10-19T22:59:44","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-209492018\/"},"modified":"2024-10-25T21:44:13","modified_gmt":"2024-10-25T21:44:13","slug":"bs-iso-209492018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-209492018\/","title":{"rendered":"BS ISO 20949:2018"},"content":{"rendered":"

This document specifies the definitions, titles of design and general requirements and test methods to determine the performance of smart contactors for use in aircraft electrical power systems. The smart contactor consists of a switching driving circuit and a power switch for protection, action on control signals, and providing status information.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
7<\/td>\nForeword <\/td>\n<\/tr>\n
8<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
11<\/td>\n4 General requirements
4.1 Detail specification sheets <\/td>\n<\/tr>\n
12<\/td>\n4.2 Materials
4.3 Construction
4.4 Terminals
4.4.1 Main terminals <\/td>\n<\/tr>\n
13<\/td>\n4.4.2 Auxiliary terminals
4.5 Enclosures
4.5.1 General <\/td>\n<\/tr>\n
14<\/td>\n4.5.2 Open enclosures
4.5.3 Enclosed enclosures (ventilated explosion-proof)
4.5.4 Sealed (other than hermetically) enclosures
4.5.5 Hermetically sealed enclosures
4.5.6 Grounding of enclosures
4.6 Installation clearances
4.7 Terminal marking
4.8 Terminal covers and barriers <\/td>\n<\/tr>\n
15<\/td>\n4.9 Mounting
5 Design characteristics
5.1 General <\/td>\n<\/tr>\n
16<\/td>\n5.2 Control signal
5.3 Status signals for smart contactors
5.4 Fail-safe characteristics
6 Operating characteristics
6.1 General operating characteristics
6.2 Timing sequence <\/td>\n<\/tr>\n
17<\/td>\n6.3 Operating voltage
6.3.1 General
6.3.2 Pickup voltage
6.3.3 Dropout voltage
6.4 Electrical characteristics
6.4.1 General <\/td>\n<\/tr>\n
18<\/td>\n6.4.2 Contact voltage drop
6.4.3 Quiescent power dissipation
6.4.4 Control signals <\/td>\n<\/tr>\n
19<\/td>\n6.5 Contact bounce, operating and release time
6.6 Dielectric strength
6.7 Insulation resistance <\/td>\n<\/tr>\n
20<\/td>\n6.8 Overload characteristics
6.8.1 General
6.8.2 Trip characteristics with the overload condition
6.8.3 Circuit breaker compatibility
6.9 Ground Fault Interrupt characteristics
6.10 Trip-free characteristics
6.11 Life <\/td>\n<\/tr>\n
21<\/td>\n7 Environmental conditions and test procedures
8 Qualification Tests
8.1 General <\/td>\n<\/tr>\n
22<\/td>\n8.2 Visual and mechanical examination
8.3 Timing sequence
8.3.1 Turn-off time <\/td>\n<\/tr>\n
23<\/td>\n8.3.2 Turn-on time
8.4 Operating voltage
8.4.1 General <\/td>\n<\/tr>\n
24<\/td>\n8.4.2 Pickup voltage
8.4.3 Dropout voltage
8.5 Electrical characteristics
8.5.1 General
8.5.2 Contact voltage drop <\/td>\n<\/tr>\n
25<\/td>\n8.5.3 Quiescent power dissipation
8.5.4 Control signals <\/td>\n<\/tr>\n
27<\/td>\n8.6 Contact bounce, operating and release times
8.6.1 General <\/td>\n<\/tr>\n
28<\/td>\n8.7 Dielectric withstanding voltage
8.8 Insulation resistance <\/td>\n<\/tr>\n
29<\/td>\n8.9 Overloads
8.9.1 Trip characteristics with the overload condition
8.9.2 Circuit breaker compatibility
8.10 Ground Fault Interrupt characteristics
8.11 Trip-free characteristics
8.12 Life <\/td>\n<\/tr>\n
30<\/td>\n8.13 Terminal strength
8.14 Seal <\/td>\n<\/tr>\n
31<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Aircraft. Smart contactor. General requirements<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2018<\/td>\n32<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":330439,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-330435","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/330435","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/330439"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=330435"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=330435"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=330435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}