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Loop Testers - Free UK Delivery Over £25 - Buy Online | Zoro

Loop Testers

The mid-range model in Megger's LTW300 range of earth loop testers, the LTW325 builds upon the functionality of the LTW315 and adds such functionality as the ability to display Max Zs and R1 + R2.

Capable of full 2 wire loop testing designed not to trip 30ma RCDs and suitable for use with a wide range of voltages, the Megger LTW325 can be used to quickly and easily verify the loop impedance of electrical circuits without directly disconnecting the electrical supply. Loop testing is performed using only 2 leads and can be connected as phase to earth, phase to neutral or phase to phase.

An integrated no-trip loop test ensures that the Megger LTW325 will not trip any RCD ≥30mA while a separate high current loop test can be used should there not be an RCD fitted to the system. To ensure accuracy when testing this earth loop tester also includes an integrated electrical noise detection filter that will detect and filter out the effects of heavy electrical noise which can have a negative effect on training results.

- 2-wire non trip loop testing
- 2 wire fast testing (high current)
- Suitable for use on 110V to 280V applications
- Also suitable for use on 50V to 440V applications
- Phase to phase testing
- 20 KA PFC range
- 0.01Ω resolution
- Automatic noise detection and correction
- Auto loop test initiation
- Voltage and frequency measurements
- Max Zs display
- R1 + R2 display

LTW325 Earth Loop Tester

Megger's LTW425 is the best model available in Megger's LTW range of earth loop testers. It includes all of the features found on the other models and also enhances the overall resolution of the instrument, bumping it up from 0.001 to 0.0001Ω resolution. It's also the only model in the series to feature 40 KA PFC range.

Like other models in the series this earth loop tester is capable of performing 2, 3 and 4 wire earth loop measurements. It also performs 2-wire fast testing (high current) which can be used when an RCD isn't present in the installation.

The LTW425 also automatically compensantes for excess noise present within the installation, ensuring that the accuracy of loop tests performed remains high. The instrument is fully suitable for use on 110 to 280V and 50 to 440V applications, can carry out phase to phase testing, automatically starts loop tests when test leads are connected and can also be used to get accurate measurements of both frequency and voltage. It also displays Max Zs and R1 + R2.

- 2-wire non trip loop testing
- 2 wire fast testing (high current)
- Suitable for use on 110V to 280V applications
- Also suitable for use on 50V to 440V applications
- Phase to phase testing
- 20 KA PFC range
- 0.01Ω resolution
- Automatic noise detection and correction
- Auto loop test initiation
- Voltage and frequency measurements
- Max Zs display
- R1 + R2 display

LTW425 Earth Loop Tester

The entry-level tester in Megger's earth loop tester range, the LTW315 is used for carrying out 2 wire loop impedance measurements on phase to earth or phase to neutral.

Guaranteed not to trip working RCDs of more than 30mA thanks to a non-trip loop test and compatible with both three and single phase systems, this tester makes performing measurements easier by requiring the use of only 2 test leads in order to carry out measurement procedures. When there is no risk of tripping an RCD it is also possible to use high current loop testing mode.

When carrying out no-trip testing procedures the LTW315 constantly evaluates the level of noise detected on circuitry to ensure that the accuracy of results is not modified by the presence of electrical noise.

The Megger LTW315 is part of the LTW range of earth loop testers. The following table outlines the difference between each of the available models in this series.

-  2-wire loop testing procedures on phase to earth and phase to neutral
- Guaranteed to not trip out RCDs thanks to non-trip loop testing
- Noise detection filters out electrical noise that can create erratic readings
- Resolution down to 0.01Ω
- Portable lightweight instrument with tough carrying case encasing the tester
- AUTO start function starts testing as soon as the leads are connected
- PFC display up to 20kA

LTW315 Earth Loop Tester

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