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Summary of Contents for SBM

Page 1: ...INSTRUCTIONS CONTROL AND TRANSFER SWITCH Type SBM GEH 2038E GE Meter and Control 205 Great Valley Parkway Malvern PA 19355 0715 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 2: ...e one of the cam follower assemblies is omitted CONTACT IDENTIFICATION The contacts are marked for identification using a standard system On each side of the switch midway on the barriers is a confined marking strip See Figure 4 These strips are located between the two terminal screws which define a contact The marking strip on the right side front view looking toward the rear is numbered 1 3 5 et...

Page 3: ...TACT CLEANING MAINTENANCE At regular intervals the switch contacts should be inspected for wear and burning An opening at the bottom of the switch has been provided for this See Figure 3 If the contacts are slightly pitted or coated with sulphide they should be cleaned with a flexible burnishing tool similar to that included in the XRT relay tool kit CAUTION Since many of the parts of this switch ...

Page 4: ...ioning wheel if they are present Unscrew the tie bolts and remove the front support If any torsion springs are present pull one tie bolt back far enough so that one arm of the torsion spring can be sprung away from the spring actuator Remove any spacers present the sleeve the spring and the spring actuator Remove the molded barrier cover plate exposing the contacts of the first stage Each cam has ...

Page 5: ... GEH 2038 TYPE SBM CONTROL SWITCHES 22 Front Bearing 23 Front Support 24 Barrier Cover GEF 4167A 25 Cam Follower and Moving Contact A ssembly 26 Cams for Contacts 27 Upper Stationary Contact 28 Lower Stationary Contact 29 Terminal Screw 30 Barrier 31 Barrier Assembly 32 Rear Bearing 33 Bearing Retainer 34 Tie Bolt Figure 1 018485484 Exploded View of Type SBM Switch 7 w w w E l e c t r i c a l P a ...

Page 6: ...rr 111 8 9 9 ah 29 r 49 tV4 to 10 a 30 so 10 KNURLED _L DIA FOR STAND ARD AND PULL TO LOCK SWITCHES 2 II LEVER ___ I CIA FOR REMOVABLE HANO_ L_ E_ S _ W __ _ __ I 15 15 1 PANEL D RILLING J IS IS J j6 j6 FRONT VIE W J P r 16 16 w e t T r I I L H s 6 I 1 I _ 1 1 16 i I i _ v u I r 28 1 I 2 4 t lsc t r_ lsc l_ I I 311 DRILL 7ft I 1 ai V j 2ix varliK 4 2 f THK1 LAMINATED PHOTO STANDARD LITHO ESCUTCHEO...

Page 7: ...w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 8: ...w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 9: ...w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 10: ...91 3000 Meter and Control Business Department General Electric Company Protection and Control 205 Great Valley Parkway Malvern Pennsylvania 19355 0715 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 11: ...INIIRUCIIONS GEH 2038A SUPERSEDES GEH 2038 CONTROL AND TRANSFER SWITCH Type SBM SWITCHGEAR DEPARTMENT GENERAL ELECTRIC PHILADELPHIA PA w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 12: ...wheel Po g I J S S pacer tops Upper J stationary Termln contact Terminal screw 11 4 iden icotion I 0 I Cll Cam followerand Fig I mov g cont aaembl c Exploded View of Type SBM Switch u tM Shafl Bearing retainer Rear 1 laver 802702 Q I t 1 0 w co a 0 Q Pol I f l g T 00 t J j w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 13: ...return the switch to a central neutral position require a contact action which lags behind the switch motion lost motion or slip contacts Such contacts use cams with a special loose fit on the shaft When the shaft has turned far enough to close or open these contacts it can be rotated 45 degrees in the reverse direction without moving the cams but beyond this point the cam moves with the shaft and...

Page 14: ...tally enclosed except for an opening in the bottom to allow for a visual in spection of the contacts All switches are furnished for mounting in panels 3 32 to 1 4 inch thick Variation in panel thickness is taken up by the use of two saddle washers mounted between the handle and escutcheon INSTALLATION RECEIVING Immediately upon receipt of a switch examine it for any damage sustained in transit If ...

Page 15: ...3 6 4 4 5 3 4 24 6 711 44 6 5 8 5 5 6 3 8 25 7 1 16 45 7 1 4 6 6 7 co 26 7 11 16 co 46 7 718 r I I 8 5 16 I 7 7 7 5 8 N 27 N 47 8 112 8 8 8 l 4 28 15 16 48 9 1 8 9 9 8 1 2 29 3 16 49 9 1 4 10 10 9 118 30 16 50 10 r 112 HOLE STD PULL TO LOCK 7 1 3 8 HOLE REMOVABLE HANDLE t PANEL DRILLING 11 01 _J I f LO i _J I 17 v I I i O I I I t I L i g I 1 j 7 1 l f C i TI I v 1 15_4 __ i 16 16 i zt X 1 8 THICK ...

Page 16: ...the new barrier assembly into the coupling keeping the shaft of the new contact barriers in the proper position to give the correct contact sequence cor responding to the handle position This should 6 cause the side holes in the two U shaped brackets to line up Fasten the brackets together with the hardware supplied If it is desired to disassemble the switch for any reason the following procedure ...

Page 17: ...Before tightening the tie bolts into the front support make sure that all the barriersare properly nested Control and Transfer Switch Type SBM GEH 2038 The parts which fit into the front support may now be assembled placing the stops if present in their proper position with respect to the shaft identification mark RENEWAL PARTS It is recommended that sufficient quantities of renewal parts be carri...

Page 18: ...ings 59101 303 N Broadway U U I U Butte 59701 103 N Wyoming St C 1 u NEBRASKA I U I U Omaha 68102 409 S 17th St U NEVADA CI M U U Las Vegas 89105 1711 S 8th St I NEW HAMPSHIRE u Abilene 79601 442 Cedar St Amarillo 79101 303 Polk St Beaumont mOl 1385 Calder Avo Corpus Christi78 l1 20 N Chaporral St Dallas 752 47 8101 Sterr mons Freeway El Paso 79901 215 N Stanton St Fort Worth 76102 18 W 7th St Hou...

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