Radiodetection Tx-121 Isolation Transformer - For the Tx-10
Radiodetection Tx-121 is a LV power cable core-to-core short-circuit fault-finding accessory.
Underground 3-phase LV cables are generally used to distribute power across towns and cities. They are usually laid beneath pavements in the area served, with link boxes where the network can be interconnected.
A common fault for these cables is a short circuit between two or more phases–known as a phase-to-phase or core-to-core short faults.
So what‘s the problem?
Locating a core-to-core short fault is not a simple task. Typically, utility companies will dig and cut at set distances along the cable to isolate
the section where the fault is present – a long and laborious task.
Due to the number of joints and varying cable types within transmission networks, conventional TDR (Time Domain Reflectometer) measurements can be unreliable, while standard Electromagnetic locating techniques are generally unable to provide reliable fault pinpointing.
Radiodetection Tx-121 Key Features:
- LV power cable core-to-core short-circuit fault-finding accessory
- Designed to be used alongside a suitable RD7000+ or RD8000 locator and Tx-10 transmitter to detect core-to-core shorts using the cable lay effect and a low-frequency signal
- CAT IV rated isolation allows authorised and qualified personnel to apply a locate-able signal across two shorted faulty cores of an energised LV cable* if required, where regulations permit, avoiding the need to isolate the cable
*Rated for connection to CAT IV mains circuits up to 230V phase-to-neutral. Maximum phase to phase voltage differential: 3Vrms at 50/60Hz