LTW315, LTW325 and LTW335

2 wire non-tripping loop impedance testers

  • 2 Wire Non-tripping loop tester
  • 50 V to 440 V operation
  • 110 V centre-tap loop testing
  • CATIV installation testing
  • AUTO start - operation
  • 0.01 Ω resolution

The 2 wire non-tripping earth loop testers verify the loop impedance of a live electrical circuit, ie without the need to disconnect the electrical supply. The new LTW300 series instruments offer a 2 wire loop testing solution that does not trip 30 mA RCDs and can be used on a wide range of voltages.

The new LTW300’s offer a range of features to make earth loop testing safer and easier.

The range consists of:

  • LTW315 - 2 Wire loop impedance measurement
  • LTW325 - 2 wire + maxZ + (R1+R2)
  • LTW335 - 2 wire + maxZ + (R1+R2) + Download

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Technical Documents
Technical guide
Instrument category rating
Technical guide
Loop testing techniques
Technical guide
Testing on 110 V systems
Technical guide
Testing three-phase systems
Technical guide
Use of fused test leads