The new Megger LTW325 Loop Impedance Tester is a time saving loop tester that eliminates the risk of incorrect connections. It uses two wire earth loop testers to verify the loop impedance of a live electrical circuit without the need to disconnect the electrical supply. The dependable two wire testing of the LTW325 is a major benefit in applications where the neutral is missing or inaccessible, such as light switches and systems with 110V centre-tapped supplies. This loop impedance tester provides all of the facilities necessary for two wire, non-trip loop testing on all supplies between 50V and 440V AC. As with all of the LTW300 series, the two wire loop testing solution is guaranteed not to trip 30mA RCDs.
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
Key Features:
- Two wire loop impedance measurement.
- Phase to Earth testing.
- Phase to Neutral testing.
- Guaranteed not to trip working RCDs of up to 30mA.
- Three phase circuits with RCD protection can also be tested.
- Test runs for approx. 10 secs.
- Sophisticated noise detection circuitry that monitors supply to ensure accuracy.
- Additional 10 secs is required if electrical noise is detected that could affect results.
- High current test used for supplies with no RCD.
- Auto-start function will start loop test running as soon as leads are connected.
- Enables testing on 110V centre tapped supplies.
- Frequency measurement.
- PFC calculation up to 20KA.
- Test results are displayed to a resolution of 0.01Ω.
- Backlit display.
- Three-phase safe and Category IV 300V rated
