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IEEE C37.237-2018 pdf free

IEEE C37.237-2018 pdf free.IEEE Standard for Requirements for Time Tags Created by Intelligent Electronic Devices- COMTAG.
digitized: Represented in a digital form, most often by means of an analog to digital converter.
cent record: A compilation of data. man or machine readable, which includes information describing one or more events andor analog quantities. Event records include a time tag and data for a period of time.
esent lime: That time when an event occurred or when a reported quantity was measured on the actual power system.
intelligent electronic device (lED): Any device incorporating one or more processors with the capability to receive or send datacontrol from, or to, an external source (e.g., electronic multifunction meters. digital relays, controllers).
intended use: Use of a product in accordance with specifications, instructions, and information provided by the supplier.
local offset: Difference, in hours and sometimes fractions of hours, between universal coordinated time(UTC) and a local time zone. Example: Pacific Standard Time (PST) is UTC-OKOO. Central European Time (CET) is UTC-t-O tOO.
local time: Time expressed in the custom of the local time zone. Local times are based on UTC and include a local offset, which may depend on the season. See also: summer time: time tone.
locked: Tracking a reference signal within acceptable limits.
on-time mark: A signal that indicates the beginning of a second. minute. hour etc. The most common on-lime mark is I pulse per second (PPS).
sampled value(s): One of a sequence of digitized values, representing an analog quantity, not necessarily complying with, nor used with the same meaning as IEC 61 XSO I [31 J.
su miner time: Local time, which is advanced in summer, generally by one hour. compared to local time during the rest of the year. For example, Pacific Daylight Time (PDT) is (LJTC)-07h: Central European Summer Time (CEST) is UTC+02h. Not all parts of a time zone may adopt summer time unifonnly, which can cause problems when comparing event records from different locations. The specific day and hour when time is adanced during summer, and set back again during fall, is detennined by local law and subject to change for political conenience. See also: da light sasing tinic: local time: tinic zonc
time quality: A statement of the estimated uncertainty of the internal clock in an liii) used to generate time tags. Time quality includes the effects of inherent pertbrmance limits of the time distribution system. holdover when “master” sync is lost, and degradations caused by lFl)s or other devices used to process or transmit the time signal.IEEE C37.237 pdf free download.

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