As well as providing all of the features needed for the safe, convenient and efficient testing of low voltage electrical installations, Megger’s new MFT1711 multifunction tester (MFT) offers valuable extra features that were previously only available on more expensive instruments. These include a maximum Zs function, which makes it unnecessary to remember individual Zs readings when testing an installation, automatic RCD testing and true RMS voltage measurement.

The new entry-level model in Megger’s popular MFT1700 family of testers, the MFT1711 has been designed specifically to meet the needs of electrical contractors who work mainly on single-phase installations in domestic and commercial premises. It combines outstanding value for money with exceptional ease of use, and it features robust construction to guarantee long life, even when regularly used in tough, on-site conditions.

The MFT1711 can test RCDs with sensitivities from 10 mA to 500 mA, including programmable types. Like all instruments in the range, it provides three options for loop testing – two-wire no trip, three-wire no trip and high current – which means that the fastest and most convenient method can be used in every situation. It also features fast-response continuity testing.

Megger’s MFT1711 multifunction installation testers have a large bright dual-parameter display that shows test voltage at the same time as insulation resistance, and loop resistance at the same time as prospective fault current. All tests are selected quickly and positively using clearly marked colour-coded control knobs – there are no complex and confusing menus to navigate.

Safety is central to the design of the MFT1711. It is dust and rain proof to IP54, and it has a CAT IV 300 V safety rating, which means that it can be used without concerns in any environment. It also incorporates comprehensive protection against damage if the wrong range is selected or if it is accidentally connected to a live circuit, even if the test has been locked on.