3003 W CASINO RD BLDG 45-242 2018-01-01 MF Import

.�, _,� _ � .. "'r--------------.__-- - - --- - -..�_.___._ _._.--------�-__._ . _- - -- . . INTERRUPTER SWI'1'CHGEAR ANSI/IEE6 C37.20,41987 8.4 Buses end Connections. The bus nnd wn• 6.9 Precautiormry I,abels. Ei�ch MEI switch- nectiona shall be bare except where close clenr• gear should be provided with approprinte pre- � nncex may make ineulation necessary, When cautionary �p�la to cnll the usera uttention to ased,insulution ia to be teated nccordinq to 5.'l.G. poG�ntinl hnznrds thnt nre inherent to the equip- ment and thut cannot be e�iminnted by design. B.b Int¢rlocke See ANSI Z35.1-1972[3J and R'E,Aqq g��etin No 8.6.1 Stationary 3witches. Mechanical u� 77'19�3 (R 197b)[30j for recomm�t key interlocics ehall be provided on MEI ewiG�h- ndation. gear to prnvent eccene to the power fuses unlees 8•10 Encloeure Cetego��. �� A the interrupter ewitch is open and to prevent for description of enclosure categoneseand%re- clusing the interrupter ewitch when the power �e� r�9uirements. fueea or the interrupter ewitch nre accessible. Interrupter ewitches cyu(pped wiEh stored en- �'�y mechenisme ehall hnve interlocks to pre- �' APPlicatiott Guide for MEI vent access to the ewitch compartment unlesa SW'�tchgear the etored energy mechaniam ia in the dis• 7.1 Unueual9erviceCundlNone.Itiestrongly chatged or blocked poeftia�. 6.6.2 Urawout 8witchee, With the ewitch in �ommended thnt the usual eervice conditione, the closed � aeacritxd in 3.1, be provided for MEI switch. poeition, movement o(the removeble genr epplicntions if practical(artificially,if nec- element to and from the connected position shnll eayiiry),However,if unusual cunditione exiat and be prevented, cannot be ciiminnted, the following conaidera- With the switch in the open position and the tions epply; removable element at uny intermediate po�� between disconnected and connected positions, N� An unu�uul xrvite co�diliane ehould be e closure of the ewitch (mechenicall; or electri• by �ha ueer aM��«� cally) ahall be prevented. 7.1.1 Ambient Air Tem With the operating spring in the charged po- 40'C. When MEI switahgeo�rapP1,�'ed where , sition, movement of the removable element to theambientnirtemperatureiehigherthan40'C and from the connected position shell be pre• �ts performence may be aCfected and apeciul con- vented, eideretion ehould be given to these nppjicatione. The total temperature limita for parte end mn- 8.8 Indoor MEI Switchgear, Accese, end �er�els na listed in 4.fi should not be exceeded. Ventllatlon. Encloeures for indoor M(�;I ewicch- Therefore, (or the higher ambients, the equip- gear ehall be ventilatecl with hinged dnor(e) f�r ment ehould be derated to a continuoua currenL accese to f�e�, value thet mnintaine the totsl temperature lim- its. 8.7 Outd�or MEI 8witchgear, Accesa, nnd �� 1 2 AF��1 c�najdetnt'on�ieaulsoerequie d —90'C. S VenNlntinn. Enclosures for outdoor MEI µ'hen MEI ewitchgear ie applied where the em- ewitchgeur ehall be ventilnted, and shull be b��nt eir temperetw•e is less then —30'C,Space e9��PP� with euitable accesa doors. henting and thermal ineulntion to minimize the Doore ehall be eq��ppe� with latches; etopa ercects of euch expoaure ehould be considered. If ehnll be provided to hold the doors in the open �hie ie not possible, thc effect of low tempero- position; end provisian ehnll be made far pad- turee on the functional pedormance of such ma• 1ceks. Heaters or other eCfective meane ehall be �rials es oils,plestic ineulntion on primery and provided lo minimize condenention. eecondary circuita, control wire insulation, and lubricante ehould be coneidered. 8.8 Shuttere. On drawout MF,I switchgenr, nu- Switchg oPPt�embl es thnt1depend'o nlir far an tomntic ehuttera dhall be provided in the stn- inaulating ond cooling medium will huve .i tionnry strucWre to prevent incidentnl contnct higher temperaWre rise nnd n lower dielectrir with the live pnrts of the primary circuit when strength when aperoted ot nititudes nbo��e vnl- the removnble element is in the test position, uca epecilied in 3.1. For npplirations ut higher diaconnected position, or hns bern removed. nlLitudes,the rnted 1 min �wwer-frequency with- ��r�