Electrostatic Reset Type


Eaton's Cooper Power series S.T.A.R. Electrostatic Reset (ER) faulted circuit indicators are designed to quickly and easily locate faulted sections of overhead distribution systems. These faulted circuit indicators (FCIs) can be installed on overhead distribution lines and derive their power from the voltage gradient between the line and the ground plane. This voltage gradient provides a reliable source for operating and resetting the fault indicator when compared to current reset devices which are subject to system loading variations. Electrostatic Reset FCIs provide a reliable means of fault location and isolation. In addition, they eliminate fault chasing methods which are costly and time consuming, and very stressful on system components exposed to the fault currents. Electrostatic Reset fault indicators have been designed to operate primarily on uninsulated, unshielded cable but may also be used on an unshielded insulated cable such as tree wire.

Catalog Number SEHI
Electrical Ratings and Characteristics Refer to Catalog CA320005EN

Design Features

  • An inrush restraint feature eliminates false tripping and is standard on all units. The S.T.A.R. faulted circuit indicator will ignore inrush currents caused by reclosing operations of protective devices on the system. A dead time of 200 ms will activate the inrush restraint feature.
  • A low pass filter, also a standard feature, will prevent the S.T.A.R. faulted circuit indicator from tripping on high frequency transients like those caused by capacitive discharges.
  • In addition, the S.T.A.R. faulted circuit indicator is equipped with temperature compensation circuitry to assure the accurate and reliable performance over the entire specified temperature range.
  • The quick response time of the S.T.A.R. electrostatic reset faulted circuit indicator provides easy coordination with current-limiting fuses and other protective devices.
  • This unique combination of standard features makes the S.T.A.R. faulted circuit indicator extremely reliable.