Short-circuit & earth-fault detection
Detects both fault types on buried cables so the affected section is isolated fast.
- Phase-to-phase short circuit
- Single-phase earth fault
- Configurable current thresholds
Product · Fault detection
Underground fault detectors for buried MV cable networks.
Fault passage indicators for 6–35 kV underground networks — installed in ring main units (RMUs), compact substations and distribution boards. They flag the passage of a fault locally and report it to your control centre via a DCU, so crews find the faulted cable section in minutes instead of hours.
Key specifications
- Voltage: 6–35 kV underground cable networks
- Faults: short-circuit and earth fault
- Install: RMU, compact substations, distribution boards
- Comms: local indication + DCU → SCADA / DMS
Capabilities
Built for the underground distribution network.
Where overhead detectors watch open lines, underground indicators are made for enclosed switchgear — compact, safe to install in cells, and connected to your supervision.
Made for RMUs & compact substations
Compact indicators that fit inside ring main units, package substations and distribution boards.
- Cable-mounted or panel-mounted
- Space-saving form factor
- Safe MV switchgear installation
Local & remote indication
Instant on-site signalling plus remote status for the control room — no systematic field trips.
- Ultra-bright LED / mechanical flag
- On-cell display (model-dependent)
- Remote event reporting
DCU → SCADA communication
A data concentrator unit (DCU) gathers several indicators in a substation and relays events upstream.
- Aggregation of multiple detectors
- Uplink to SCADA / DMS / OMS
- Cellular, Ethernet or serial backhaul
Urban & industrial ready
Designed for dense urban distribution feeders and industrial substations where cables dominate.
- Urban ring networks
- Industrial site substations
- Utility distribution automation
Reliable, low-maintenance
Self-powered options with backup battery for long, dependable service inside switchgear.
- Line/CT powered + backup battery
- Sealed for harsh conditions
- Long maintenance intervals
Technical selection
Typical specifications.
Indicative characteristics — exact values depend on the selected Four-Faith model. Ask us for the datasheet matched to your network.
| Characteristic | Typical value |
|---|---|
| Network voltage | 6–35 kV underground cable networks |
| Faults detected | Phase short-circuit and single-phase earth fault |
| Local indication | Ultra-bright LED, mechanical flag or display (model-dependent) |
| Remote communication | Via DCU to SCADA / DMS (cellular, Ethernet or serial uplink) |
| Installation | Ring main units (RMU), compact / package substations, distribution boards |
| Reset | Automatic (timer), manual, or on voltage/current restoration |
| Power supply | Line/CT powered with backup battery (model-dependent) |
| Environment | Indoor MV switchgear, sealed for harsh conditions |
Integration
From the cell to the control room.
Several indicators in a substation report to a single DCU, which forwards fault events to your SCADA — giving operators real-time visibility of the underground network.
/01
Detectors in the RMU
Indicators sit on the cables inside each ring main unit cell and watch for fault current.
/02
DCU aggregation
A data concentrator unit collects the status of every indicator in the substation.
/03
Uplink to SCADA
The DCU relays fault events to the control centre over cellular, Ethernet or serial links.
300+
Fault detectors deployed on the CI-ENERGIES network
As part of the NEDA project (World Bank funding), more than 300 fault detectors were installed on the Ivorian distribution network — proof, at scale, of what fault detection delivers, delivered by the ENERTEC group.
NEDA PROJECTCI-ENERGIES
WORLD BANKFunding
WORLD BANKFunding