Cable Fault Secondary Impulse Filter CFL SIMF is mainly used for high resistance and flashing fault test for power cable with the voltage below 10kV, and for fault location with Secondary Impulse with conjunction of Pre-locator and HV surge generator .Latest fault locating technique for high resistance and flashing faults is Secondary Impulse Method (SIM).This method offers highly reliable results for faults on any type of power cable. It converts the faults to low resistance nature by creating arc across the fault. With the help of filter, the arc is sustained for extended period during which the pre-locator instrument CFL PL3 sends Time Domain Reflectometer (TDR) waves to the fault. These waves reflect back from the fault point and appear on the display as a short fault. This method gives precise result of fault distance for high resistance and flashing nature faults.
SIM filter SIMF is designed for mounting in a van for quick fault location. It can be mounted in a rack mounted system.
It is passive filter having own output power source. It uses the energy of the surge generator to create arc at the fault point.
A high voltage switch incorporated in the output circuit facilitates selection of SIM or ICM mode.