No matter if cable theft took place or the cable is broke, as a result you lose contact to the device connected. If this happens to devices that are off for extended periods, we are into trouble when they should come online but do not. The efficiency of cable theft prevention efforts can be significantly improved by technology tools to detect criminal actions as early as possible. The GSM Commander Product family offers a range of solutions to empower effective detection & reporting of access violation and cable tampering events.
Cable Theft example Pumping Station
Let’s assume a cable runs that feed pumps. In some cases the pumps will be submerged or otherwise inaccessible or possibly in an unsafe location. A good way to monitor these cables is to monitor the dead cable by verifying continuity. The Polygon Technologies “Cable Theft Monitor” (CTM) device injects a DC signal onto one of the conductors in the dead cable. The signal will travel down the line to the load, where a DC reflective device is installed. In the case of a motor or pump, the load itself provides this function. From the load, the signal travels back up the line towards the Cable Theft Monitor (CTM) device, where it is monitored. If the CTM does not pick up the returned signal, it is able to indicate that an incident is under way. This sounds simple enough, but the caveat comes in when the power comes back on. The signal injection device should also be able to survive power-on conditions for indefinite periods and automatically revert to signal injection monitoring as soon as the power is off.
Ready for Mining
The Polygon Technologies “Cable Theft Monitor” withstands up to 600V at its terminals for indefinite periods, allowing its use in 525V mining applications. Increased resolution can be achieved by installing multiple CTM devices along the cable run.
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