PATHFINDER Variable Trip Test Point Type
Eaton's Cooper Power series S.T.A.R. PATHFINDER Variable Trip Test Point faulted circuit indicators (FCI) are designed to quickly and easily locate faulted sections of underground cable systems. These FCIs can be used on both 200 A separable connectors and 600 A terminators with a voltage test point. The removable sleeve allows for use on major manufacturers’ loadbreak elbows.
- The Variable Trip design eliminates the need to specify a trip rating for the FCI. The load sensing feature adjusts the FCI to normal load conditions. When a fault occurs, the unit senses the rise in system current caused by the fault, followed by the loss of system voltage due to operation of the protective device. Thus, the Variable Trip FCI provides a “one size fits all” FCI for voltage test points, reducing inventory and eliminating problems caused by misapplication of FCIs.
- Battery Life Optimization Circuitry ensures maximum life for the battery powering the LED display. After 4 hours of flash time following a fault, the Battery Life Optimization Circuitry (BLOC) feature places the FCI in “sleep” mode. The LED will stop flashing, but the unit will retain a record of the fault occurrence in its memory. The unit can then be interrogated anytime after the 4 hours, using the manual testing/reset tool, to determine if the FCI detected a fault. The event record remains in the memory of the FCI until the unit is manually reset, or until normal system power is restored.
- In addition to the variable trip design and BLOC features, an inrush restraint feature eliminates false tripping and is standard on all units. The S.T.A.R. PATHFINDER 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 cable capacitive discharges.
- In addition, the S.T.A.R. faulted circuit indicator is equipped with temperature compensation circuitry to assure accurate, reliable performance over the specified temperature range.
- Another standard feature is the reset restraint circuit. The S.T.A.R. variable trip FCI senses normal line voltage. Reset restraint prevents the fault indicator from falsely resetting due to feedback voltages of less than 80% of the normal voltage measured at the test point.
- The quick response time of the S.T.A.R. variable trip faulted circuit indicator allows easy coordination with current limiting fuses. This unique combination of standard features makes the S.T.A.R. Variable Trip TPR faulted circuit indicator extremely reliable.