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Megger MFT1741 Multifunction Tester

  • Megger MFT1741: Confidence Meter and enhanced loop testing
  • Comprehensive testing for various electrical installations
  • User-friendly design and backlit LCD display
  • Sturdy construction, IP54 rated, and versatile accessories
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£1,039.00 (ex VAT)

£1,246.80 (inc VAT)

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Megger MFT1741 Multifunction Tester

Experience unparalleled functionality with the Megger MFT1741 Multifunction Tester, one of the most advanced models in the MFT1701 range. Building on the MFT1731’s impressive capabilities, it introduces a revolutionary confidence meter indicating the reliability of readings and enhanced loop testing hardware that counteracts the effects of RCDs on loop impedance values. Designed for residential, commercial, and industrial low voltage installations, the MFT1741 ensures comprehensive certification in accordance with BS7671 and Part P of the building regulations. Boasting the fastest and most accurate no-trip loop testing procedure on the market, loop impedance readings are achieved in just four seconds.

Innovative Confidence Meter and Enhanced Loop Test

The cutting-edge three-wire no-trip loop impedance test on the MFT1741 proves invaluable when RCDs or RCBOs obstruct high current two-wire tests, as regular no-trip tests are prone to interference from noise and harmonics. The tester autonomously identifies and compensates for such interference after conducting the initial loop test, enabling stable, repeatable loop tests on noisy circuits. The Confidence Meter arc, displayed above the reading, contracts as the figure adjusts. A complete contraction signifies high reliability, while a partial reduction indicates potential unreliability. Consequently, the Megger MFT1741’s Confidence Meter minimises the need for repeat earth loop impedance readings by verifying reliable results. The user can take steps to improve low reliability readings, such as bypassing RCDs or conducting repeat measurements.

The MFT1741’s advanced loop testing hardware effectively negates the impact of RCD impedance uplift. High loop impedance readings often result from testing through RCDs due to resistance in some RCD coils, causing regular MFTs to struggle with distinguishing between them. The MFT1741’s three-wire test function utilises various test currents and measurement methods to prevent skewed readings due to RCDs. It expertly tests 10mA and 30mA devices and can even complete no-trip tests through Type B RCDs, enhancing versatility and precision.

Comprehensive Testing Capabilities and User-Friendly Design

In addition to the patent-pending confidence meter and enhanced loop impedance test, the Megger MFT1741 carries out a complete array of tests for verifying new or updated electrical installations. These capabilities encompass continuity testing at 15mA and 200mA, insulation resistance testing at 100V, 250V, 500V, and 1000V, RCD testing (ramp, manual, and auto), true RMS voltage measurement, and two/three-pole earth testing. It can even perform ART and stake-less testing with extra accessories. B-type and three-phase RCDs can be seamlessly tested with this instrument.

The Megger MFT1741 showcases readings for all tests on its backlit LCD display in both digital and analogue formats. The two clearly-labelled dials simplify selecting the appropriate functionalities. Offering intuitive operation, it can store results to its internal memory, downloaded with the supplied Megger Download Manager via wireless Bluetooth connectivity. Optional Megger Powersuite Lite software enables further data management.

Constructed with sturdy, IP54 rated water and dust resistant rubber casing, the Megger MFT1741 provides added practicality with test and lock buttons on each side. It includes a comprehensive array of accessories, such as test leads, probes, crocodile clips, mains plug test lead, remote rest probe, calibration certificate, and carry case.

Compatible with the Megger Certsuite™ Electrical Certification Software – Single User, 12 Month Licence, the Megger 1741 Multifunction Tester is suitable for cloud-based systems on Android and iOS devices, as well as laptops or desktop PCs using various browsers (Chrome, Microsoft Edge, Firefox, Safari, and Opera).

 

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Megger MFT1741 Multifunction Tester

Experience unparalleled functionality with the Megger MFT1741 Multifunction Tester, one of the most advanced models in the MFT1701 range. Building on the MFT1731’s impressive capabilities, it introduces a revolutionary confidence meter indicating the reliability of readings and enhanced loop testing hardware that counteracts the effects of RCDs on loop impedance values. Designed for residential, commercial, and industrial low voltage installations, the MFT1741 ensures comprehensive certification in accordance with BS7671 and Part P of the building regulations. Boasting the fastest and most accurate no-trip loop testing procedure on the market, loop impedance readings are achieved in just four seconds.

Innovative Confidence Meter and Enhanced Loop Test

The cutting-edge three-wire no-trip loop impedance test on the MFT1741 proves invaluable when RCDs or RCBOs obstruct high current two-wire tests, as regular no-trip tests are prone to interference from noise and harmonics. The tester autonomously identifies and compensates for such interference after conducting the initial loop test, enabling stable, repeatable loop tests on noisy circuits. The Confidence Meter arc, displayed above the reading, contracts as the figure adjusts. A complete contraction signifies high reliability, while a partial reduction indicates potential unreliability. Consequently, the Megger MFT1741’s Confidence Meter minimises the need for repeat earth loop impedance readings by verifying reliable results. The user can take steps to improve low reliability readings, such as bypassing RCDs or conducting repeat measurements.

The MFT1741’s advanced loop testing hardware effectively negates the impact of RCD impedance uplift. High loop impedance readings often result from testing through RCDs due to resistance in some RCD coils, causing regular MFTs to struggle with distinguishing between them. The MFT1741’s three-wire test function utilises various test currents and measurement methods to prevent skewed readings due to RCDs. It expertly tests 10mA and 30mA devices and can even complete no-trip tests through Type B RCDs, enhancing versatility and precision.

Comprehensive Testing Capabilities and User-Friendly Design

In addition to the patent-pending confidence meter and enhanced loop impedance test, the Megger MFT1741 carries out a complete array of tests for verifying new or updated electrical installations. These capabilities encompass continuity testing at 15mA and 200mA, insulation resistance testing at 100V, 250V, 500V, and 1000V, RCD testing (ramp, manual, and auto), true RMS voltage measurement, and two/three-pole earth testing. It can even perform ART and stake-less testing with extra accessories. B-type and three-phase RCDs can be seamlessly tested with this instrument.

The Megger MFT1741 showcases readings for all tests on its backlit LCD display in both digital and analogue formats. The two clearly-labelled dials simplify selecting the appropriate functionalities. Offering intuitive operation, it can store results to its internal memory, downloaded with the supplied Megger Download Manager via wireless Bluetooth connectivity. Optional Megger Powersuite Lite software enables further data management.

Constructed with sturdy, IP54 rated water and dust resistant rubber casing, the Megger MFT1741 provides added practicality with test and lock buttons on each side. It includes a comprehensive array of accessories, such as test leads, probes, crocodile clips, mains plug test lead, remote rest probe, calibration certificate, and carry case.

Compatible with the Megger Certsuite™ Electrical Certification Software – Single User, 12 Month Licence, the Megger 1741 Multifunction Tester is suitable for cloud-based systems on Android and iOS devices, as well as laptops or desktop PCs using various browsers (Chrome, Microsoft Edge, Firefox, Safari, and Opera).

Megger Multifunction Tester Series Comparison
MFT1711MFT1721MFT1741
Loop testing
Megger 2-wire no-trip test L-PE
Conventional 3-wire no-trip test L-PE
New algorithm 3-wire no-trip test L-PE
Confidence meter
Max. Zs display
R1 + R2 value
PSCC and PFC (20kA max.)
L-N/L-E 48V to 280V, 45 Hz to 65 Hz
L-N/L-E 48V to 480V, 45 Hz to 65 Hz
Insulation testing
250V, 500V and 1kV test voltages
100V test voltage
Adjustable buzzer threshold
Continuity and resistance
200mA test current for certification
15mA test current to prolong battery life
Auto start continuity test
Adjustable buzzer threshold
Voltage / Frequency and Phase Rotation
10V to 600V AC and DC
Frequency 15Hz to 400Hz
Phase Rotation
RCD testing
10, 30, 100, 300, 500mA RCDs
1000mA RCDs
High Speed auto RCD test
Ramp test for RCD fault finding
Type A, type AC and Type S RCDs
Programmable RCDs
Type B RCDs
3 phase (no earth) RCDs
Earth electrode resistance testing
Stakeless or clamp on testing**
3-wire testing for fall of potential or 62% rule
Attached rod technique 3-pole testing
Option of 25V and 50V output
Ground noise check
Additional benefits
CAT IV 300V / CATIII 600V rated
Remote test probe
Current measurement 0.1mA to 200A *
On-board recharging
On-board memory
Bluetooth downloading from memory
Hard plastic carry case
Large soft carry case
Calibration certificate included

*Requires optional iClamp **Requires optional i and vClamp

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 detecting noise on the supply the Confidence Meter will continue testing and refining its measurement. This is shown by the noise symbol to the left of the display appearing and the arc closing more slowly, pausing or even opening up again in high noise situations. 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 1741 also protects against accidental misuse, giving both visual and audible warnings if the unit detects voltages exist on the circuit. Testing will be inhibited to prevent serious damage. Also, save money on batteries as the MFT1741 includes rechargeable batteries and 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
  • 3 Wire lead set with prods and clips
  • Mains plug test lead
  • Battery charger
  • Large soft pouch with extra storage

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