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Summary of Contents for Westinghouse F-11
- Page 1 I.B. 33-215-1 INSTALLATION ADJUSTMENTS MAINTENANCE • • INSTRUCTIONS OIL CIRCUIT BREAKER Types F -11 F -22 WESTINGHOUSE ELECTRIC CORPORATION SWITCHGEAR DIVISION EAST PITTSBURGH PLANT EAST PITTSBURGH, PA • • SUPERSEDES 1.8. 5229-L DECEMBER, 1954 (Rep. 11.57) Printed In U.S.A. ·...
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Page 2: Table Of Contents
MAINTENANCE ........... Pages 10-19 Attachments LIST OF ILLUSTRATIONS Figure Page F-11 Single Throw Breaker Unit ..F-11 Double Throw Breaker Unit..F-22 Single Throw Breaker Unit ....Contacts F-11 ..... Contacts F-22 ....Switchboard Mounting Assembly ... -
Page 3: Shipping
I.B. 33-215 - 1 OIL CIRCUIT BREAKER SHIPPING The types F-11 and F-22 oil circuit breakers are at least until installation is complete. Correspond built on the unit basis, i.e., the breaker unit, the ence will be expedited if the Westinghouse order... -
Page 4: Installation
Place trip coils in coverplate and assemble quence. trip attachments by inserting in holes in bottom of •,---------- ---- - - -- ---------- -------- - ---- - - - FIG. 2. F-11 Double Throw Breaker Unit... - Page 5 coil box pushing up through coil and top of coil Note several of the bolts fasten both assemblies. box. Turn calibration scales so they face the front. Make sure breaker unit is level with studs vertical. If breaker unit and coverplate are to be mount Fasten in place with nut and lock washer on top of below coil box.
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Page 6: Contacts F-11
MOVING CONTACT TYPE F-11 CONTACTS SECTION A-A FIG. 4. Contacts F-11 be placed on the ceiling of the floor below they expected load in the circuit without overheating. Be sure all surfaces are clean before bolting to should be reassembled as shown in Fig. 10. The gether. -
Page 7: Adjustment
Check to see that with coverplate in the closed position contacts are properly engaged. The length of the lift rods in the Type F-11 breaker is fixed. The cross bar clamps to the upper end, the CONTACT moving contacts clamp to the lower end. -
Page 8: Switchboard Mounting Assembly
UNDER VOLTAGE 2 POLE BREAKER RELEASE OMIT MIDDLE P OLE COVER PLATE /" 4 POLE BREAKER BREAKER UNIT FIG. 6. Switchboard Mounting Assembly... -
Page 10: Maintenance
I.B. 33 - 215-1 OIL CIRCUIT BREAKER MAINTENANCE Examine the breaker from time to time, the fre clean, that all cotter pins are in place and no bolts quency of the inspections to depend on the condi loose. See that no levers or links are worn so much tions under which breaker operates. -
Page 12: 1 Single Handle Coverplate
FIG. 11. Single Handle Coverplate RUNNING H ANDLE SIGNAL SWITCH AUTOMATIC UNDERVOLTAGE ' --- FIG. 12. Double Handle Coverplate... -
Page 13: Instantaneous Overload Trip
On the Type F-11 breaker, burning will be on the top of the moving added to the moving core to hold it back. The time delay can be changed by rotating the partial disk contact and on the flared portion of the finger. -
Page 14: Inverse Time Delay Trip
STD. SPCL. LOW TEMP. MINIMUM TIME DELAY 50% TIME DELAY MUM TIME DELAY 30 ° C. TEMP. 5 10 CURRENT AMPERES 1400 2000 CURRENT PER CENT FIG. 15. Inverse Time Delay Trip FIG. 16. Inverse Time Delay Tripping Curves MAGNET CIRCUIT TRIPPING SPRING ARMATURE... -
Page 15: Automatic Retrieve Undervoltage Trip
SP RING ADJUSTER TRIP LEVER ARMATURE FIG. 17A. Automatic Retrieve Undervoltage Trip The viscosity of the oil affects the time delay. slowly after removal of voltage, the trigger of cover The temperature of the oil affects its viscosity. The plate is released. Check to see that armature will time delay also varies inversely with the size of the drop and trip breaker when voltage is reduced to overload. -
Page 16: Double Throw Interlock
Fig. 18. The operation of the trip lever to which coverplate. The double-throw F-11 breaker has an the breaker is attached throws the switch from one equivalent interlock which is an integral part of the position to the other. - Page 18 The sequence interlock shown in Fig. 21, com ing surface of the interlocking lever swinging it pels the complete closing and complete opening of back away from the panel. This unlocks the running the handle to which the starting breaker is attached handle which can be moved to the closed position before the running breaker handle can be moved if done promptly before the interlocking lever...
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Page 19: 2 Mounting Assembly
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