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.
Function:
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