Defining a Cavity

This task explains how to define a cavity on an electrical device.
A cavity is used to specify the location of an electrical object when making an electrical connection.
Open any document containing a device where you want to place a cavity.

  1. Click Define Cavity and select an equipment where the cavity is to be defined.

    .

    The Cavity Definition dialog box opens:

  2. Select the electrical device where you want the cavity to be defined.

  3. Enter a value in the Id Number field.
    Note that the Id Number must be unique.

  4. Select a Representation, for example a pocket, a pad, a face...

  5. Optionally, place a Contact constraint, for example a surface or a point.

  6. Optionally, place a Coincidence constraint, for example a surface, a line or an axis.

  7. Optionally, place an Orientation constraint, for example a surface, a line or an axis.
    The orientation is used to constrain the rotation i.e. the third degree of liberty.

  8. Click OK to validate.

    The specification tree is updated.

For more information about the placement constraints, refer to Using Assembly Constraints.
You can add a cavity to:
  • Mounting equipment
  • Equipment
  • Terminal strips
  • Terminal blocks
  • Ground studs
  • Connector shells
  • Single insert connectors
  • Back shells, allowing you to ground the wire/cable shielding through a contact.