Westinghouse F-11, Instructions Manual

Page 1: ...CTIONS OIL CIRCUIT BREAKER Types F 11 and F 22 WESTINGHOUSE ELECTRIC CORPORATION EAST PITTSBURGH PLANT SUPERSEDES 1 8 5229 L SWITCHGEAR DIVISION EAST PITTSBURGH PA DECEMBER 1954 Rep 11 57 Printed In U S A 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: ...ing Assembly Panel Frame Mounting Assembly Remote Control Assembly Pipe Frame Mounting Assembly Bell Crank Assembly Single Handle Coverplate Double Handle Coverplate Instantaneous Overload Trip Shunt Trip Inverse Time Delay Trip Inverse Time Delay Tripping Curves Hand Retrieve Undervoltage Trip Automatic Retrieve Undervoltage Trip Auxiliary Switch Bell Alarm Switch Double Throw Interlock Sequence ...

Page 3: ...ts are as listed Keep the papers MAIN I at least until installation is complete Correspond ence will be expedited if the Westinghouse order number the style number or other identification marked on the part or assembly under question and a description are included in the first letter If possible refer to the part or parts by the names given in this book together with the figure number where it app...

Page 4: ... hand then proceed in approximately the following se quence 1 Place the bell alarm Fig 19 or auxiliary switch Fig 18 if they are supplied in the slot in the coverplate Z Place trip coils in coverplate and assemble trip attachments by inserting in holes in bottom of FIG 2 F 11 Double Throw Breaker Unit 4 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 5: ... in back of switchboard assemble with coverplate See Fig 6 CROSSBAR MAIN CHECKNUT CONTACT CLAMP Note several of the bolts fasten both assemblies Make sure breaker unit is level with studs vertical 6 If breaker unit and coverplate are to be mount ed on a pipe mounting bracket as in Fig 9 proceed as per 3 4 5 above the pipe bracket is just a cast iron switchboard to be supported on pipes 7 If breake...

Page 6: ... end to lock adjustment when complete 9 Connect power circuit Be sure conductors of adequate cross section are used to carry the 6 expected load in the circuit without overheating Be sure all surfaces are clean before bolting to gether A light coat of linseed oil particularly on threaded studs will help make up a tight low resistance joint and will make breaking the joint easier Be careful when bo...

Page 7: ... are at the proper closed position with the toggle stop in the linkage in con tact A wood screw prevents rotation In replacing rods be sure there are no burrs in the threaded holes and drill a hole in the wood rod to start the locking screw Check operation when the breaker is closed suddenly and when trigger is released with breaker in the closed position Check to see that moving contacts enter ap...

Page 8: ...MENT 8 FOR 2 POLE BREAKER OMIT MIDDLE P OLE FOR 4 POLE BREAKER UNDER VOLTAGE RELEASE t ____ _ BREAKER UNIT FIG 6 Switchboard Mounting Assembly COVER PLATE 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: ... that main copper connections are tight and taped according to standard practice Check to see that tank is filled to proper level with oil that has been checked to be up to standard New oil should check 22 kv or better in standard test cup Be sure dash pot of time delay trip is filled with the special oil provided 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: ...r I I I I 1 I I I I FOR 2 POLE BREAKER OMIT MIDDLE POLE FOR 4 POLE BREAKER BRACKET UNIT clean that all cotter pins are in place and no bolts loose See that no levers or links are worn so much at fulcrums as to interfere with operation of breaker UNDER VOLTAGE RELEASE AUXILIARY SWITCH COVER PLATE BELL ALARM SWITCH FIG B Remote Control Assembly 10 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 ...

Page 11: ...MIT MIDDLE POLE l Oi C JO ro r __ FOR A POLE BREAKER UNDER VOLTAGE RELEASE PLATE AUXILIARY SWITCH BREAKER UNIT FIG 9 Pipe Frame Mounting Assembly STOP ROD ROD END BELL CRANK FIG 10 Bell Crank Assembly r G a 1 0 0 11 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: ...MAINTENANCE 12 SIGNAL SWITCH FIG 11 Single Handle Coverplate RUNNING HANDLE FIG 12 Double Handle Coverplate AUTOMATIC UNDERVOLTAGE _ f I 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: ...e between the moving and stationary cores can be varied as indicated by the calibration marking for tripping between 5 and 9 amperes in the trip coil By using current trans formers of suitable ratio tripping can be accomplish ed at any desired primary current In assemblying be sure that the wedges are put in below the coils Also check to see that the trigger is released when the moving tripping co...

Page 14: ...CL LOW TEMP OIL 1 MINIMUM TIME DELAY 2 50 TIME DELAY 3 MAX I MUM TIME DELAY TEMP 30 C 40 70 100 CURRENT AMPERES 800 1400 2000 CURRENT PER CENT FIG 16 Inverse Time Delay Tripping Curves MAGNET CIRCUIT TRIPPING SPRING ARMATURE SHAFT RETRIEVING HANDLE FIG 17 Hand Retrieve Undervoltage Trip 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 15: ...ise direction as far as it will go the application of 80 control voltage will hold armature Check to see that with handle released HINGE JAW FIG 18 Auxiliary Switch MOUNT I NG SCREW BLADE slowly after removal of voltage the trigger of cover plate is released Check to see that armature will drop and trip breaker when voltage is reduced to approximately 50 of normal Adjustment is pro vided to vary p...

Page 16: ...witch from one position to the other Check from time to time to see INTERLOCK PIN BRACKET SPRING TRIP LEVER I that the contacts are clean and that the connections are tight The mechanical interlock shown in Fig 20 con sists of a bar and centralizing springs so arranged that it is possible to close but one of two levers at a time This may be used on two single handle coverplates on various center l...

Page 17: ... OIL CIRCUIT BREAKER RUNNING HANDLE OPEN RUNNING HANDLE OPEN RUNN I NG HANDLE CLOSED r _ STARTING HANDLE OPEN STARTING STAR TING HANDLE OPEN FIG 21 Sequence Interlock 17 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 18: ... swings towards the panel As the starting lever re turns to the open position the pin strikes the unlock 18 ing surface of the interlocking lever swinging it back away from the panel This unlocks the running handle which can be moved to the closed position if done promptly before the interlocking lever swings back into the locking position If the running handle is moved to the closed position the ...

Page 19: ... HEX STL BOLT 3 8 16 X 3 IN HEX STL BOLT 3 8 16 x 3 1 4 HEX STL BOLT 3 8 16 x 3 1 2 HEX STL BOLT 3 8 16 HEX STL NUT 3 8 STO STL WASHER 3 8 X WIDE STL WASHER 3 8 STL LOCKWASHER f G l J T VI e co 0 n 0 o r to 0 0 0 0 X i 0 j J w c o 0 w 2f rt c v v r _ Ul wo _l ll l r J _l t tQrlrh _ JP l J L______ _ GROUP NUMBER 11213141516171819 1 o I 1 11211311411 5116117118 I f I I I I I I 5 I I I I I I I I 4 I ...

Page 20: ... I I 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 ...