1、DC I Document 91 /78691 DRAFT FOR PUBLIC COMMENT Latest date for receipt of comments British Standards Institution Sub-committee ACE/6/5 Aerospace - Protection for electrical systems DRAFT EUROPEAN STANDARD AEROSPACE SERIES TECHNICAL SPECIFICATION (prEN 2666-001 1 SINGLE-POLE CIRCUIT BREAKERS. RATED
2、 CURRENTS 50 TO 10OA I This draft is now available for public comment and your views and technical comments on it would be appreciated. If you have no specific comments to make but find it generally acceptable it would be helpful if you would notify us accordingly. Suggestions entailing revision of
3、the text should indicate the preferred wording. Please quote the relevant clause number against any comment. The Co-ordination of the requirements of this draft with those of any related standards is of particular importance and you are invited to point out any areas where this may be necessary. All
4、 comments should be sent to the Committee Secretary Mr A E Banyard at the London/mmBxxEx address below. The comments received will be passed to the committee concerned for their consideration; no acknowledgement will normally be sent. Requests for further copies of this draft should be sent to: Sale
5、s dministration (Drafts), BSI, Linford Wood, Milton Keynes MK14 6LE. Price; cur rent 1 50 I 60 1 70 1 80 Note: Voltage drop is not measured at minimum current. Rated current (A) Max. voltage drop at rated current (V) 90 1 O0 o. 20 O. 16 O. 14 o. 12 0.11 o. 1 prEN 2666-001 Page 6 Table 7 Upper and lo
6、wer trip limits Rated current range (A) /Ambient I Load (% rated current) Lower trip limit Upper trip limit - 3600 s 15 3600 s I tempe rat u re 2 5 C I 50 to 100 110 175 110 145 I 75 200 500 1 O00 I 1 O0 I 145 Table 8 Overload tripping tines 4mbient temperatu re t 5 “C - 55 23 75 Rated current range
7、 (A) Tripping times in s 50 to 100 40 to 800 25 to 155 1 to 18 15 to 100 0.2 to 3 prEN 2666 page 6a Table 9 Short circuit response Zated vol tage )pen circuit voltage ault current ?stab1 ishment time rype of connection tated current range est current 1 t i tude iumber of samples per range iumber of tests CO 1) oco 1) 28 V Dc 30t2VC 3.05. 1391 Sect i on Whole standard Whole standard De sc ri pt i on of amendment New version Revi si on fol lowing decision at meeting on 24/25.04.91 Reason Technical requirement Author i sed by AECMA C2-GT5 Executed AECMA C2-GT5 05-9 1
