ABB CW Series Instruction Leaflet Download | Manualshive

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Summary of Contents for CW Series

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Page 2: ...t for the armature and thus controls the pickup value of the switch 3 0 CHARACTERISTICS Type CW relays are available in the following ranges and taps Typical 60 hertz Time Power Curves are shown in Figures 5 and 6 The curves are taken at maximum torque which occurs with the current leading the volt age by 30 degrees within 4 The time curves apply 5 at rated voltage 3 1 Trip Circuit The main contac...

Page 3: ...ns of screws for steel panel mounting or the terminal studs furnished with the relay for thick panel mounting The terminal studs may be easily removed or inserted by locking two nuts on the stud and then turning the proper nut with a wrench For detailed FT case information refer to I L 41 076 5 0 SETTINGS The watt tap the time dial setting and the ICS tap must be selected 5 1 Overwatt Application ...

Page 4: ...ay switch or equivalent For the 48 volt dc type WL the 2 0 ampere tap is used CAUTION Since the tap block screw carries operating cur rent be sure that the screws are turned tight In order to avoid opening current transformer cir cuits when changing taps under load start with RED handles FIRST and open all switch blades Chassis operating shorting switches on the case will short the secondary of th...

Page 5: ...p Volt Amperes Connect the relay per Figure 9 Set the time dial to position 6 Using the lowest tap setting alternately apply tap value volt amperes plus 3 and tap value volt amperes minus 3 with the current leading the voltage by 30 The moving contact should leave the backstop at tap value plus 3 and should return to the backstop at tap value minus 3 The relay should be calibrated with 10 times ta...

Page 6: ...41 241 3L 6 Figure 5 Typical 60 Hertz Time Curves of the 20 120 and 35 200 Watt Type CW Relay Sub 1 184A600 ...

Page 7: ...41 241 3L 7 Figure 6 Typical 60 Hertz Time Curves of the 100 600 and 175 1000 Watt Type CW Relay Sub 1 184A601 ...

Page 8: ... Relays on a Three Phase System Note For balanced Three Phase Conditions only one CW Relay is required Figure 8 External Schematic of One CW Relay for Loss of Field Protection Figure 9 Diagram of Test Connections for Type CW Relay in FT 11 Case Sub 3 774B831 Sub 3 849A303 ...

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Page 12: ...ABB Inc 4300 Coral Ridge Drive Coral Springs Florida 33065 Telephone 1 954 752 6700 Fax 1 954 345 5329 www abb com substation automation IL 41 241 3 Revision L ABB ...

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