GE SBM Instructions Manual

GE SBM Instructions Manual

Control and transfer switch

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GEH-2038E
INSTRUCTIONS
CONTROL AND TRANSFER SWITCH
Type SBM
GE Meter and Control
205 Great Valley Parkway
Malvern, PA 19355-0715

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Summary of Contents for GE SBM

  • Page 1 GEH-2038E INSTRUCTIONS CONTROL AND TRANSFER SWITCH Type SBM GE Meter and Control 205 Great Valley Parkway Malvern, PA 19355-0715...
  • Page 2 12.0 CONSTRUCTION The Type SBM switch is built up with a series of stages that are nested into each other, an operating shaft, a front support and a rear support. The complete stack is tied together with two tie bolts threaded into the front support.
  • Page 3: Contact Cleaning

    These parts will be received assembled with a U-shaped bracket, and a coupling with a square hole will also be received. Figure 4 shows a Type SBM switch with an additional stage already in position.
  • Page 4 GEH-2038 To install these additional contacts, loosen the two tie bolts at the rear of the switch about 3/32 inch. Slide the new bracket over the shaft and tie bolts so that the · i nner part of the bracket slot rests on the tie bolts between the tie bolts and nameplate.
  • Page 5 Rocker Arm Upper Stationary Contact Sleeve Lower Stationary Contact Positioning Wheel Termina l Screw Position ing Spring Barrier Sleeve Barrier Assembly Torsion Spring Rear Bearing Bearing Retainer Spring Actuator Tie Bolt Figure 1 - (018485484) Exploded View of Type SBM Switch...
  • Page 6 FRON T VIE W LEVER l sc ! t -�-�� r_ l sc ! l _�-* 1- ai:. . V' LAMINATED PHOTO STANDARD LITHO ESCUTCHEON ESCUTCHEON Figure (127A6779 [8]) Outline and Panel Drilling Type SBM Switch Revised since last issue...
  • Page 10 Meter and Control Business Department General Electric Company Protection and Control 205 Great Valley Parkway Malvern, Pennsylvania 19355-0715...
  • Page 11: General Electric

    GEH-2038A INIIRUCIIONS SUPERSEDES GEH·2038 CONTROL AND TRANSFER SWITCH Type SBM SWITCHGEAR DEPARTMENT GENERAL ELECTRIC PHILADELPHIA,...
  • Page 12 Upper tops stationary t:J:j contact iden=:ic otion Term ln screw � � � � � -�·: ..• �� '�·� � . f ollowe r mov���g cont aaembl;c' Fig. Exploded View of Type SBM Switch �ig.l (802702�) (8913283) aver...
  • Page 13: Operation

    That is, the switch may have The Type SBM switches are rotary cam operated momentary contact to one side of the central position switches. Rotation of the shaft causes contacts to and maintaining contacts to the other side.
  • Page 14: Installation

    3/32 to 1/4 inch thick. Variation in panel The Type SBM switch is built up with a series thickness taken up by the use of two saddle stages which are nested into each other, an washers mounted between the handle and escutcheon.
  • Page 15 9-1/4 8-1/2 KNURLED 9-118 1-3/8 HOLE-STD. & PULL TO LOCK HOLE-REMOVABLE HANDLE PANEL DRILLI NG ..--i I ..--i <.O ....--{ THICK LAMINATED PHOTO LITHO ESCUTCHEON Outline and Panel Drilling of Type SBM Switch Fig.
  • Page 16 Control and Transfer Switch Type SBM Fig. Bottom View of Type SBM Switch � View of Type SBM Switch with Additional Stage in Position Fig. cause the side holes in the two U-shaped brackets such cases, it might be advantageous not to disturb the existing switch but to add directly to to line up.
  • Page 17: Renewal Parts

    Control and Transfer Switch Type SBM GEH-2038 The parts which fit into the front support may Each cam has one number and seven letters now be assembled, placing the stops, if present, in around the shaft opening on one side of the cam and eight letters on the other side of the cam.
  • Page 18 GEZ-2!SOOM GENERAL ELECTRIC SALES OFFICE READY TO ASSIST YOU Need further Information When You Have Electrical Problems Require Ordering Instructions • • • • • • • • • Cleveland 44 · 1 16.20950 Center LOUISIANA Ridge Rd. Cleveland 1020 Lakeside Ave. KEY TO SALES OPERAnONS Alexandria 71302 MacArthur Dr.

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