ABB CA-16 Instruction Leaflet

Percentage differential relay for bus protection class 1e application
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Summary of Contents for ABB CA-16

  • Page 2 41-337.31 C...
  • Page 3: Operation

    Two identical coils on the outer OPERATION legs of the laminated structure are connected to the The type CA-16 relay is an induction disc relay with secondary (tapped section) of the autotransformer four electromagnets mounted on two discs that are winding in a manner so that the combination of all fastened on a common shaft.
  • Page 4: Energy Requirements

    41-337.31 C CHARACTERISTICS ENERGY REQUIREMENTS Burden of each restraint coil at 5 amperes 4.1. CA-16 Bus Relay VOLT AMPERES POWER FACTOR This relay has variable percentage characteristics which means that the operating coil current Continuous Rating 14 amperes required to close the relay contacts, expressed in...
  • Page 5: Installation

    Percentage Differential Characteristic 7.1. Contacts Apply 16 amperes to terminals 9 and 19 of the CA-16 Adjust the adjustable stop screw on the upper disc of relay. The contacts should close when the following the relay so that a contact separation of 0.050 inch is...
  • Page 6: Renewal Parts

    Connect the relay per the test circuit of Figure 8. lock nut. Back off the Micarta disc by loosening the Pass 20 amperes for the CA-16 relay into terminals 9 two lock nuts. Apply 0.15 amperes to terminals 14 and 19 of the relay. Adjust the plug (when used) in and 15.
  • Page 7 41-337.31 C Sub 1 3532A95 Figure 3. Internal Schematic of the Type CA-16 Bus Relay...
  • Page 8 41-337.31 C...
  • Page 9 41-337.31 C...
  • Page 10 41-337.31 C Sub 5 187A424 Figure 6. External Schematic of One Set of Type CA-16 Relays for the Protection of a Three and Four Circuit Bus...
  • Page 11 41-337.31 C Sub 5 187A425 Figure 7. External Schematic of the Type CA-16 Relays for Protection of Six Circuit Bus with Three Feeder Groups...
  • Page 12 41-337.31 C...
  • Page 13 41-337.31 C Sub 1 849A450 Figure 9. Percentage Slope Curve of the CA-16 Relay with One Restraint Winding...
  • Page 14 41-337.31 C Sub 2 849A343 Figure 10. Percentage Slope Curve of the CA-16 Relay with Six Restraint Windings in Series...
  • Page 16 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...

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