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Radiodetection Tx-121 Isolation Transformer

Radiodetection
SKU: RADITX121EN
  • Accessory which helps in locating core to core short faults on a twisted core-type 3-phase LV mains distribution cables
  • This accessory helps reduce the need for exploratory digs and 'cut-to-find' isolation tasks
  • The position of a fault is clearly indicated by a drop in the relative signal strength
More Info
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Radiodetection Tx-121 Isolation Transformer

The Tx-121 Isolation Transformer is an accessory designed for the Tx-10, which aids in locating core to core short faults on a twisted, core-type, 3-phase LV mains distribution cables. When coupled with a locating signal from a Tx-10 transmitter, the Tx-121 can be connected across a pair of shorted faulty cores on a buried, live or out of service LV cable. The location of the fault can then be determined using a suitable Radiodetection Precision Locator.

A huge benefit of using the Tx-121 Isolation Transformer is the way in which it reduces the need for exploratory digs, aswell as 'cut-to-find' isolation tasks, saving money on repairs, whilst also minimising disruption to the public.

Once the route of the buried cable has been established and clearly marked, the Tx-121 should be connected across the faulty cores, with the Tx-10 connected to the Tx-121's input, with a low frequency locate signal recommended. With the blade in line with the direction of the cable's route, the operator can then follow the regular variations of signal strength, as the connected cores twist in the cable. The operator can then identify the location of a fault, once a drop in the relative signal strength has been detected.

Key Features

  • Can easily identify a fault on a pair of shorted cores
  • Minimises cost of repairs and disruption
  • Find the specific area of a fault using Radiodetection technology
Specification
  • Rated Connection = Rated for connection to CAT IV mains circuits up to 230V phase-to-neutral
  • Fuse Rating = 3.15A, 500V, Very Fast Acting (FF), 6.3 x 32mm, UL recognised
  • Fuse Type = SIBA 70-125-40 3.15A (one in each test lead)
  • Operating Frequency Range = 256Hz to 8kHz (optimum range 512Hz to 940Hz)
  • Maximum Phase-to-Phase Voltage Differential = 3V rms at 50/60Hz
  • Operating Signal Power = 10VA max
  • Ingress Protection = IP54
  • Temperature Range (Storage) = -20°C to +80°C (-4°F to +176°F)
  • Temperature Range (Operating) = -20°C to +50°C (-4°F to +122°F)
  • Relative Humidity = 80% RH for tempeatures up to 31°C, decreasing linearly to 17% RH at 50°C
  • Operating Altitude = 2,000m (6,500') max
  • Dimensions = Length 330 x Width 406 x Height 174 (mm)/13" x 16" x 6.8"
  • Weight = 8.6kg/19lbs
  • Housing Material = Ultra high impact structural copolymer

    Compatability

  • Transmitter Compatability = Tx-10 & T10 Transmitters
  • Precision Locator Compatability = RD8200/RD7200, RD8100/RD7100 & RD8000/RD7000
  • Compliance = CE