Megger MFT1741+ Multifunction Tester
The MFT1741+ multifunction tester has been designed for testing single and three phase low voltage domestic, commercial and industrial electrical installations, providing all the tests required to complete the necessary electrical certification. All with an EN61010 Cat IV safety rating too. The MFT1741+ is suitable for testing both domestic fixed wiring installations and commercial fixed wire testing.
The MFT1741+ adds the ability to test electric vehicle charge points, including the all-important 6 mA DC test. Used in conjunction with the EV adaptor, the user can carry out a full range of tests required for the installation of EV charge points.
Built to last and take the strains of everyday testing, the 1741+ is robust, featuring a large central back lit screen with test buttons situated either side for accessibility for both right and left handed users. Smooth single click rotary dials and large buttons make for easy operation even when wearing gloves. Boasting an IP54 rating, the unit perfectly holds up to dusty environments and the often unpredictable British weather.
The Megger 1741+’s new 3 wire loop impedance test uses a combination of test currents and measurement methods to eliminate RCD impedance uplift.
Overlaying the new non-trip loop impedance measurement is the new “confidence meter”. As loop impedance values can be dramatically affected by circuit noise, the Confidence Meter displays the degree of confidence in the accuracy of the measured loop impedance via an expanding and contracting arc.
How does the confidence meter arc work?
Circuits with low / no noise.
The display shows a full width analogue arc, consisting of 51 elements. At the start of the test all elements are displayed. The instrument will then check for any adverse electrical noise. If nothing is found the test sequence will terminate and display a final value. The arc closes to one centre element, indicating the maximum degree of confidence in the result.
Circuits with high noise / distortion.
On circuits where circuit noise is present on the supply the Confidence Meter will continue testing and refining its measurement. The noise symbol appears on the left of the display, and the arc narrows, pauses, or even widens in response to high noise levels. When the confidence meter has refined its measurement, the arc will finally close to one element and the test will stop. The final displayed result may differ from the original quite significantly.
Extreme noise may cause the loop test measurement to continue for over a minute. In this case the tester will stop automatically and the size of the arc will indicate how good the meter believes the displayed value is.
The Megger MFT141+ Multifunction Tester also protects against accidental misuse, giving both visual and audible warnings if the unit detects voltages which exist on the circuit. Testing will be inhibited to prevent serious damage. You can also save money on batteries as the 1741+ includes rechargeable batteries and a charger, with a charge time of less than 4 hours.
What’s Included
- Megger MFT1741+ Multifunction Tester
- Printed quick start guide
- Full user guide on CD
- Calibration certificate
- Switched probe SP5
- Neck strap – Megger embroidered
- Wire lead set with prods and clips
- Mains plug test lead
- Battery charger
- Large soft pouch with extra storage
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