Talk:ANSI device numbers

86 relay

plese tell us if we can use new relay with out using lock out relay(86)

Wikipedia is a encyclopedia. Editors cannot provide Electrical engineering services. Please contact a registered Professional Engineer. 148.134.37.3 (talk) 13:28, 6 April 2011 (UTC)[reply]

certainly, 86 is only needed in case of you shall consider blocking subsequent closing after protection trip —Preceding unsigned comment added by 116.228.159.246 (talk) 09:34, 6 May 2011 (UTC) I agree that lockout relays are used when you want to prevent reclosing of a line after it trips. Most high voltage (69kV+) relaying schemes utilize lockout relays. It should be noted that for lines that are protected below 69kV in a round about way also utilize lockout relays. For lines below 69kV a breaker/recloser typically will try to reclose a set amount of times. If it is unsuccessful it will lockout and will have to be reset before the line can return to service. —Preceding unsigned comment added by Fleckmc (talk • contribs) 20:57, 8 May 2011 (UTC)[reply]

The indicated sources are no longer available. Different definitions can be found on the Internet. The information does not correspond to IEEE C37.2-2008 (e.g. 87N and others) — Preceding unsigned comment added by Gehrig64 (talk • contribs) 18:50, 2 April 2020 (UTC)[reply]

45

I got the standart, number 45 is abnormal atmospheric condition monitor, not fire detector. Why it is here?