CableTroll 2300 series fault Indicators is a complete system for indication of phase to ground and phase to phase faults in underground 6-36 kV MV cable networks with multi core cables where sensors can be mounted in a safe area on the cable termination. The earth fault sensor/element (EFE), which is a CT (current transformer), will measure the imbalance in the feeder in the case of an earth fault. Short circuit is detected by two additional phase-mounted sensors. All indicators located between the feeding transformer and the fault location will indicate.
The system consists of:
- Indicator housing with electronics and battery
- Earth Fault Element (EFE),
- Current sensors or short circuit elements (dependent on model)
Trip level for earth fault detection is adjustable in the range from 5-240A. Trip level for short-circuit detection is adjustable in the range from 250-1000 A for product nr 2320 and 350-1200A for product nr 2330.
The programming is done by altering the dipswitches located inside the main indicator housing. Timer reset of indication is programmable to 2, 6, 12 or 24 hours.
Battery lifetime is estimated to 8 years of standby or 1500 hours of indication.
CableTroll 2310: The indicator uses one Nortroll type summing transformer for detection of earth-faults only.
CableTroll 2320: The indicator uses a Nortroll type summing transformer and two short-circuit elements with fibre optic cables for detection of earth-faults and short-circuit faults.
CableTroll 2330: The indicator uses two current sensors and one CT for detection of earth-faults and short-circuit faults.
IP65 Metal enclosure made according to latest SEC standards & specifications, can also be provided upon request with the indicators.