DET-FK
Fallen or blown Kearney fuse detector
Detects a fallen or blown fuse on Kearney cutouts and reports the event to the control center.
A fallen or blown Kearney fuse on an overhead line can go unnoticed until the next crew patrol. This detector clamps directly onto the cutout with a hot-stick-operable clamp, and uses a built-in accelerometer to identify the position change and notify the control center — no LED needed, since the fuse drop itself is already visible.
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Three ways to connect
RF to your Telemetry RTU for MV substations, NB-IoT direct to the DNP3.0 Software Gateway, or Sigfox/LoRa on request: it adapts to the coverage and infrastructure you already have.
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No extra parts to fail
No LED or local indication electronics needed: the accelerometer detects the drop, and the cutout's position is already obvious on the pole.
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Installs on a live line
Hot-stick-operable clamp, directly on the fuse, with no service outage.
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Years of maintenance-free operation
D-size lithium battery with up to 5 years of autonomy, across a -40°C to +85°C range.
01Technical specifications
Technical specifications
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Detection
- Built-in multi-axis accelerometer to detect the cutout falling to the inverted position
- No LED indication: the physical position change is already visible to the naked eye
- Fuse status reporting (fallen / in service)
- Battery status reporting
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Connectivity
- RF: links directly to the Greenlabs Telemetry RTU for MV substations
- NB-IoT: links directly to the DNP3.0 Software Gateway
- Sigfox or LoRa (on request): connects to the DNP3.0 Software Gateway through a dedicated gateway
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Power supply
- D-size lithium battery
- Up to 5 years of autonomy
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Mounting and mechanics
- Clamp-type mounting system, operable with a hot-stick
- Live-line installation, directly on the Kearney fuse
- Operating temperature: -40°C to +85°C
02Main applications
Main applications
- Locating fallen or blown Kearney fuses on MV overhead lines
- Reducing crew patrol time after a fault
- Overhead distribution networks with multiple fuse-protected branches
- Integration with existing Telemetry RTUs for MV substations over RF
- Direct integration with the DNP3.0 Software Gateway over NB-IoT, with no intermediate RTU
- Networks with Sigfox or LoRa coverage, via a dedicated gateway
Solutions using it
Where it is deployed
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