ML17312A178

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Control Wiring Diagram Device Numbers & Definitions. Sheet 21
ML17312A178
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 01/17/1997
From:
EBASCO SERVICES, INC.
To:
Shared Package
ML17312A008 List:
References
Download: ML17312A178 (1)


Text

DEYICE NO.DEFINITION AND FUNCTION (CONT'D)DEYICE NO.DEFINITION AND FUNCTION (CONT'D)DEY I CE NO.DEFINITION AND FUNCTION (CONT'D)87 88 AUX I LI ARY MOTOR OR MOTOR GENERATOR NORMAL SYSTEM FREQUENCY)

OR RATE OF CHANGE OF FR EQ,UENCY.82 D-C RECLOS ING RELAY IS A RELAY THAT CONTROLS THE AUTOMATIC CLOS ING AND RECLOSING OF A d-c CIRCUIT INTER-RUPTER, GENERALLY IN RESPONSE TO LOAD CIRCUIT CONDITIONS.

83 AUTOMATIC SELECTIVE CONTR DL OR TRANSFER RELAY IS A RELAY THAT OPERATES TO SELECT AUTOMAT ICALLY BETWEEN CERTA IN SOURCES OR COND I-TIONS IN AN EQUIPMENT, OR PERFORMS A TRANSFER OPERATION AUTOMATICA LLY.84 OPERATING MECHANISM IS THE COMPLETE ELECTRICAL MECHANISM OR SERYOMECH-AN ISM, INCLUD ING THE OPERATING MOTOR, SOLENOIDS, POS IT ION SWITCHES, ETC., FOR A TAP CHANGER, INDUCTION REGULA-TOR, OR ANY S IMILAR PIECE OF APPARATUS WHICH OTHERWISE HAS NO DEV ICE FUNCTION NUMBER.85 CARR IER OR P I LOT-W IRE RECE IVER RELAY IS A RELAY THAT IS OPERATED OR RE-STRAINED BY A SIGNAL USED IN CONNEC-TION WITH CARRIER-CURRENT OR d-c PILOT-WIRE FAULT DIRECTIONAL RELAYING.86 LOCKING-OUT RELAY IS AN ELECTRICALLY OPERATED HAND, OR ELECTR I CA LLY, RESET RELAY OR DEV ICE THAT FUNCTIONS TO SHUT DOWN OR HOLD AN EQU I PMENT OUT OF SERV ICE, OR BOTH, UPON THE OCCURRENCE OF ABNORMAL COND IT IONS.E ENT IAL PROTECT IVE RELAY IS A PROTECTIVE RELAY THAT FUNCTIONS ON A PERCENTAGE OR PHASE ANGLE OR OTHER QUANT I TAT IVE D IFFERENCE OF TWO CUR-RENTS OR OF SOME OTHER ELECTR ICAL QUANT ITIES IS ONE USED FOR OPERATING AUX ILIARY EQU I PMENT, SUCH AS PUMPS, BLOW'ERS, EXC ITERS, ROTATING MAGNETIC AMPLI-F IERS, ETC.89 IS A SWITCH USED AS A D ISCONNECT ING, LOAD-INTERRUPTER, OR'SOLATING SWITCH IN AN a-c OR d-c POWER C IRCU IT, WHEN THIS DEV ICE IS ELECTRICALLY OPERATED OR HAS ELEC-TRICALL ACCESSOR IES, SUCH AS AN AUX-ILIARY SW ITCH, MAGNETIC LOCK, ETC.FOR AUX ILIARY CONTACT DES IGNAT IONS SEE DEY ICE NUMBER 52.90 REGULAT ING DEV ICE IS A DEV ICE THAT FUNCTIONS TO REGULATE A QUANTITY, OR QUANTITIES, SUCH AS VOLTAGE, CURRENT, POWER, SPEED, FREQUENCY, TEMPERATURE, AND LOAD, AT A CERTA IN VALUE OR BE-TWEEN CERTA IN (GENERALLY CLOSE)LIMITS FOR MACH INES, TIE LINES OR OTHER A PPARATUS.91 VOLTAGE D IRECT I ONAL RELAY IS A R E LAY THAT OPERATES WHEN THE YOLTAGE ACROSS AN OPEN C IRCU IT BREAKER OR CONTACTOR EXCEEDS A GIVEN VALUE IN A GIVEN D I RECT I ON.93 F IELD-CHANGING CONTACTOR IS A CONTACTOR THAT FUNCTIONS TO INCREASE OR DECREASE, IN ONE STEP, THE VALUE OF FIELD EXC ITA-T ION ON A MACH INE.92 VOLTAGE AND POWER D I R ECT I ONA L RE LAY IS A RELAY THAT PERMITS OR CAUSES THE CONNECTION OF TWO C IRCU ITS WHEN THE VOLTAGE DIFFERENCE BETWEEN THE M EXCEEDS A G IYEN VALUE IN A PREDETERMINED D IREC-TION AND CAUSES THESE TWO CIRCUITS TO BE DISCONNECTED FROM EACH OTHER WHEN THE POWER FLOWING BETWEEN THEM EXCEEDS A G IVEN VALUE IN THE OPPOS ITE D IRECT ION.94 TR IPPING OR TR IP-FREE RELAY IS A RELAY THAT FUNCTIONS TO TRIP A CIRCUIT BREAKER, CONTACTOR, OR EQUIPMENT, OR TO PERMIT IMMEDIATE TRIPPING BY OTHER DEVICES;OR'FO PREYENT IMMED I ATE RECLOSURE OF A C IR-CUIT INTERRUPTER IF IT SHOULD OPEN AUTO-MATICALLY EVEN THOUGH ITS CLOS ING C IRCUIT IS MA INTA I NED CLOSED.95 VOLTAGE/FRE UENCY RATIO RELAY IS A DEVICE THAT RESPONDS TO THE RATIO BETWEEN VOLTAG AND FRE UENCY AT GENERATOR TERMINALS 96 USED ONLY FOR SPEC IF IC APPLICATIONS IN 97 IND IV IDUAL INSTALLATIONS WHERE NONE OF THE 98 ASS IGNED NUMBERED FUNCTIONS FROM I TO 94 99 ARE SU ITABLE.A S IMILAR SER IES OF NUMBERS, STARTING WITH 101 INSTEAD OF I, SHALL BE USED FOR FUNCT I OtIS WHICH APPLY TO AUTOMATIC RECLOS ING FEEDERS.A S IMI LAR SER IES OF NUMBERS, START ING W ITH 201 INSTEAD OF I, SHALL BE USED FOR THOSE DEY ICES IN A MACH INE, FEEDER OR OTHER EQU I PMENT WHICH ARE CONTROLLED D IRECTLY FROM A SUPERV ISORY S YSTEM.ON ELECTRICAL DIAGRAMS ALL CONTACTS SHALL BE SHOWN IN THE DE-ENERGIZED OR NONOPERATED POS I-T ION OF THE MA IN DEV ICE.SUITABLE SUFF IX LETTERS SHALL BE USED WITH THE ABOVE DEV ICE NUMBERS WHEREVER NECESSARY TO MORE COMPLETELY DESCRIBE THE ACTUAL DEY ICE USED.S IMILARLY, APPROPR IATE SUFF IX LETTERS SHALL BE BE USED TO IDENTIFY DIST INGUI SHING FEATURES, CHARACTER 1ST ICS, OR COND IT IONS NECESSARY TO BETTER DESCRIBE THE APPLICATION OF A DEV ICE OR THE FUNCTION WHICH ITS CONTACTS SERYE.WHERE NECESSARY, SUFF IX LETTERS SHALL ALSO BE USED TO DENOTE THE VARIOUS PAR"S OF MAIN DEV ICES.IN ALL CASES, SUFFIX LETTERS SHALL BE CLEARLY EXPLA INED IN LEGEND ON THE DRAWING~SUCH SUP-PLEMENTARY DES IGNATIONS SHALL BE WR ITTEN 52-X, 52-Y, ETC., AS HAS BEEN PREY IOUSLY ILLUSTRATED IN SOME OF THE DEF IN ITI ONS~THE DEV ICE NUMBERS USED HERE IN CONFORM TO THOSE USED IN AN STANDARD C37.2-1962 REV IS ION.;Qp r-g~HUTCH I g vO~I~>h"~(/S',".I",D P, ii,>>>WHERE A CONFLICT ARISES IN ASSIGNING DEVICE NUMBERS TO REPRESENT THE DEVICES USED FOR CERTAIN FUNCTIONS, THE PREFERABLE CHOICE IS THE ONE WHICH RECOGNIZES AND IDENT IF IES THE BAS IC OPERATING PR INC IPLE OF THE DEVICE.FOR EXAMPLE AND"OIL FLOW PRESSURE SWITCH" WHICH IS ACTUATED BY'IR LOAD ING PRESSURE SHOULD BE DES IGNATED 63-0F, WHERE"63" IDENT IF IES THE DEV ICE BAS ICALLY AS A PRESSURE SWITCH AND"OF" (OIL FLOW)IND ICATES ITS FUNCTIONAL APPL ICA-TION.THIS DESIGNATION IS PREFERRED'TO THE USE OF DEY ICE NUMBER"80" WH ICH WOULD CORRE-SPOND TO A FLOW SW ITCH.S INCE C37.2 MAKES NO ASS IGNMENT FOR AN ACROSS-THE-LINE START.ING AND RUNNING CON-TACTOR, DEV ICE NUMBER%2 HAS BEEN EXTENDED TO INCLUDE THIS FUNCTION.A"WIPE-OUT" IS DEFINED AS A CIRCUIT-CLEARING DEY ICE USED TO ISOLATE A PROTECT IVE DEV ICE FROM ITS TR I PP ING CONTACT AFTER A SHORT T IME, AND TO HOLD THE CIRCUIT OPEN UNTIL THE INI-TIATING CONTACT IS REOPENED, OR UNTIL THE W I PE-OUT IS OTHERW I SE DE-ENERG IZED.THE DE-ENERGIZED OR NONOPERATED POS IT ION OF CONTACTING DEV ICES IS ALSO COMMONLY CALLED" NORMAL." ALL REFERENCES TO CONTACTS AS"NORMALLY OPEN" OR"NORMALLY CLOSED" REFER, THEREFORE, TO THE NONOPERATED POS IT ION RATHER THAN TO ANY NORMAL OPERATING COND I-T I ON OF THE ASSOC IATED EQUIPMENT.

SEV.NIO.DATE EBASCO SERYICES INCORPORATED NEW YORK, Ei SC,PW SCALE CH.DaTE I 4Y 5 I 7Z.FLORIDA POSER 8 L I GHT CO.HUTCHINSM ISLAND PLANT U~M I 8~pA@7 CONTROL Nl RING DIAGRAM DEViCE.NUMBERS 4 DEF INI'TIOklS