The Cable Troll indicators are fault current indicators for the underground medium voltage distribution network (6-36kV).
They are installed on Ring Main Units in distribution substations. They are used to detect short circuit and earth faults, and can be installed on most types of cable terminations. Some units will give separate indications for short circuit and earth faults, locally by flashing diodes and remotely through separate relay contacts or additional ComTroll communications modules.
All of our Cable Troll fault indicators have a relay output for interfacing with equipment that can forward the alarms to a control center, SCADA system or a cell phone.
NorTroll offers a wide range of communication modules and RTUs with various communication options such as radio, GSM, fibre, Ethernet etc.
CableTroll 2310 is an indicator for detection of earth faults (PtG) on multi-core and single core cable terminations. The unit uses NorTroll type current sensor (CT)
CableTroll 2320 is an indicator for detection of Earth faults (PtG) and short circuit (PtP) faults on multi-core and single core cable terminations. The unit uses NorTroll type current sensors.
CableTroll 2330 is an indicator for detection of earth faults (PtG) and short circuit (PtP) faults on multi and single core cable terminations. The unit uses NorTroll type current sensors.
CableTroll 2350 is an indicator for detection of PtG and PtP faults on multi and single core cables. The unit uses standard type current transformers. (40:1, 60:1 or 3x500:1)
CableTroll 2440 is an indicator for detection of PtG and PtP faults on single and multi-core cable terminations. The unit uses NorTroll type current sensors.
