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Summary of Contents for Westinghouse CN-33P
- Page 2 TERM INA L S CREW HOLE CLOSE CONTACT (STATIONARY) MOVING C ONTACTS TRIP CONTACT (STATIONA RY) SPIRA L SPRING ADJUSTER FRONT BEARING TRIP C URR ENT ADJUST ING PINION COUNTER WE IGHTS CLOSING VOLTAGE ADJUSTING SPRING CLOS ING V OLTAGE ADJUSTING SCREW MOUNTING H OLE Fig,...
- Page 3 TYPE CN-33P RELAY TERMINAL SC REW DAMPING M AGNE T VOLTAGE COIL ASSEMBLY REAR B EA RING C U R RENT PHASING COIL AS SE MBLY M OV ING E LEMENT STOP D R UM Fig. Type CN33P R elay, Rear Cutaway View.
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Page 4: Operation
base engage stationary terminals in the external blocks. These stationary terminal blocks have silver plated copper jaws which are backed up TER M INALS- by steel springs assembled in the molded insulation blocks. relay is mounted on two studs and held securely in place by two nuts, which when tightened, force terminal screws... - Page 5 -< POS . " �1 " TS/T "' � . ..� -< � "' SOURCE .!!. . � 86 :::!: Z 6 .!!. . "' �2 NEG..SUPPLY DEVICE NUMBER CHARTS TEST SWITC RELAY � DEVICE THERMAL NUMBER NETWORK TS/NI...
- Page 6 TYPE CN-33P RELAY 2!50 471102 Curve Fig. Typical Closing Phase Angle Curve lor the CN33P Relay.
- Page 7 TYPE CN-33P R ELA Y TYPICAL TRIP CURVE FOR CN-33P (CURRENT APPLIED DIRECT THROUGH THE RELAY COILS, C.T.'S.) 471107 Curve Fig. Typical Tripping Phase Angle Curve for the CN33P Relay- High Current Values, that is, that all feeders associated with the network tact.
- Page 8 471108 Curve Fig. 7 Typical Trip Phase Angle Curve for the CN33P Relay- Low Current Values. CHARACTE R ISTICS zero, the moving contact will move away from the stationary CLOSE contact and take up a position Figures 5, 6 & 7 show the operating character somewhere between stationary...
- Page 10 PHASf ROTATION I t 290B223 Fig. Test Connections for Type CN33P Relay. in MAl, MA2 & MA3 until the TRIP contacts just are adjusted such that the contact springs are close. This current should be 2-4 rna. (All three just touching their support. Just touching is currents should be the same).
- Page 11 TYPE CN-33P RELAY trip current is weights and adjust. The inner spring support b) If the low, change the spiral should not touch the spiral spring adjuster. spring setting by turning the pinion one to two teeth in a direction to close the trip con...
- Page 12 WESTINGHOUSE ELECTRIC CORPORATION RELAY DEPARTMENT NEWARK, N. J. Printed in U.S.
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