DESCRIPTION
The MFT1701 series is a range of 4 instruments for testing low voltage
electrical installations to BS7671. They provide all the tests required
to complete the necessary electrical certification for industrial,
commercial and domestic fixed wiring installations, including:
TRMS System voltage and frequency measurement
Insulation test at 100 V*, 250 V, 500 V and 1000 V
Including input protection against live circuits up to
600 V even when insulation test is locked-on
Continuity resistance at 200 mA or 15 mA
Automatic start - no need to press TEST so leaving
both hands free to hold probes
Resistance range up to 100 kΩ with fast continuity
buzzer at selectable thresholds
Earth loop test
2 and 3 wire non-trip range
2 wire Hi current including phase to phase
Prospective fault current measurement up to 20 kA
RCD testing including:
• Type AC, A, S, B* and programmable RCDs
• 3-phase RCDs*
• Auto-test routine
• Fault (Touch) voltage display
Earth spike testing
• 2-pole/3-pole**
• ART**
• Stakeless techniques **
* Model dependent
** Optional accessories required
The MFT1701 series has now been augmented with the addition of
the MFT1741 model. This model include:
Confidence meter – An adaptive loop test and display
method for electrically noisy circuits
Enhanced loop testing hardware – To remove the
effects of RCD on loop impedance values
The new “Confidence Meter” technology is ideal for enhanced Earth
Loop Impedance testing in electrically noisy environments. Traditional
Loop Impedance methods are susceptible to circuit noise during
the measurement phase. If the AC waveform changes during this
period, from noise or harmonics, the distortion can create significant
variation from test to test.
The new “Confidence Meter” analyses and adjusts for these
variations and provides a far more stable result every time, removing
the need for repeated tests.
In addition, the new MFT1741 also supports a new hardware
measurement technique, removing the influence of any RCD or
RCBO on the measured loop impedance value.
All instruments are IEC 61010 CAT IV 300 V rated for connection to
low voltage systems with no protective device, so safe for connection
anywhere on the system right up to the source transformer without
risk of damage from large transient spikes.
The unique modern styling allows it to be operated while stood
on the floor, a ladder-shelf or platform, hung around the neck or
handheld. Dual TEST and LOCK buttons - one pair at each end -
makes the testers easy to operate left or right handed.
MFT1711, MFT1721, MFT1731 and MFT1741
Multifunction Tester
MFT1711, MFT1721, MFT1731 and MFT1741
Multifunction Tester
Two and three wire non-trip loop testing
for RCD protected circuits
Type-B RCD and 3-phase RCD testing for
industrial applications with no Earth
3-terminal earth test and stakeless testing
for electrode resistance measurement
Internal memory and Bluetooth
®
communications
EN61010 CAT IV safety rating and tough
IP54 case
Megger Loop impedance
“Confidence meter”
RCD coil impedance immunity
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