Megger MFT-X1 Multifunction Tester Owner’s Manual

: June 9, 2024
: Megger

Table of Contents

MFT-X1 Multifunction Tester
DESCRIPTION
FEATURES
APPLICATIONS
FUNCTIONAL SUMMARY
SPECIFICATIONS
ORDERING INFORMATION
Documents / Resources

MFT-X1 Multifunction Tester
Owner’s Manual Megger MFT X1 Multifunction Tester MFT-X1
Multifunction tester

MFT-X1 Multifunction Tester

True Loop™ test with patented Confidence Meter™
CertSuite™ compatible Bluetooth® result transfer
Next generation 2-wire and 3-wire non-trip loop testing
User upgradeable operating system
High resolution 0.001Ω loop test
Automatic volt-drop measurement
Stabilised insulation test voltage
Configurable RCD and EV auto-sequence tests
Fast switch rechargeable plug-in battery pack
Full colour TFT bonded display
Re-designed lead set and carry case solution
IP54 operational housing

DESCRIPTION

The MFT-X1 new electrical installation testing platform MFT-X1 is the first of a new generation of firmware upgradeable, full functionality multi-function testers for low voltage electrical installations.
Intended for use on all low voltage electrical installations including EV charge points and domestic photo-voltaic systems, the range of test capabilities allow for general commissioning of installations and periodic maintenance as well as detailed fault diagnostics.

FEATURES

True Loop™
True Loop™ impedance testing is now a standard feature on the MFT-X1. The latest 3-wire non-trip loop testing technology, incorporated with the patented Confidence Meter™, offers an unmatched, reliable, accurate, stable and repeatable loop test solution to the user, allowing testing in the most hostile high noise conditions or close to the source of supply. The technology also removes the risk of RCD uplift whilst reducing typical test times – even on circuits protected 10 mA protective devices.\
Patented Confidence meter technology
All loop impedance ranges are now supported by the Megger patented Confidence meter technology, reducing typical test times for non-trip loop testing to around 7 seconds on quiet circuits, and providing optimised test times for loop impedance testing in difficult noisy supplies. The Confidence meter shows the progress of the loop measurement and indicates the presence of noise on the circuit, removing erroneous values to give a stable and consistent result.
MFT-X1 result downloading and CertSuite
Test results can be tagged with circuit data and transferred to CertSuite, the latest cloud base electrical certification software package from Megger. When paired to a mobile device using the low energy Bluetooth ® mode, results can be sent directly from the MFT-X1 to an Android or IOS device running Megger CertSuite software. These results are also synchronised with the cloud-based application.
With a wide range of certification options, CertSuite is available as a monthly or yearly subscription package for electrical certification of installations taking results directly from the MFT whilst testing. CertSuite is suitable for multiple concurrent users and is optimised for use with the MFT-X1.
Results can be stored and reviewed remotely by users whilst on site from different locations, accessed by head office or other users with the relevant permission, with professional looking certification and reports.
High resolution loop impedance testing
The MFT-X1 has extended the low end of the loop impedance range from 0.01 ohms to 0.001 ohms resolution and 50 kA current calculation. The True Loop impedance measurement using the patented confidence meter makes these low impedance measurements a realistic option, with two wire test connections and high current testing.
RCD custom testing
RCD testing can now be optimised with the RCD test configurator. Select a whole suite of tests or only those elements of the RCD you require. You can even add ramp testing to the sequence, optimising and simplifying testing.
EV Charge point testing
Suitable for both EV charger installation testing with either RCD Type B or RDC protected charge points. The MFT-X1 in conjunction with the Megger EVCA adaptor can test all known EV chargers for installation or maintenance.

Stabilised insulation test voltage
For the first time in any multifunction tester, the MFT-X1 incorporates a stabilised insulation test voltage, ensuring output voltage is accurate to within +/-3% +2 digits. This compares to the industry standard of +20% and so provides a more accurate test voltage without the risk of over-voltage damage to circuits or sensitive components.
Current measurement
The MFT-X1 uses current clamps for current measurement using the optional Megger MCC1010 current clamp for measurement of AC currents from 1 mA to 1000 A.
Optional accessory
Customer upgradeable operating system
The operating system of the MFT-X1 range is upgradable by the user, simply by downloading the latest operating system file (.BIN) from the Megger web site to a suitable microSD card.
Insert the updated microSD card and pressing TEST initiates an automatic update process without the need for further user intervention.
Display and user interface
The user interface utilises the flexibility of the high contrast 480 x 272 colour, TFT bonded display, with a monochrome black on white mode designed specifically for use in difficult lighting conditions.
Enhancing the colour coded test selection rotary dial, range selection is now replicated on the instrument screen, ensuring easy use in poor lighting environments.
Hot keys for second level functions are clearly shown across the top of each screen and the second control dial provides users with a further quick selection option of any
highlighted feature, even if wearing protective gloves.
Relevant information is clearly shown on the display, both before and after each test, in full colour, and includes the Confidence Meter™ progress bar, RCD ramp test progress as well as the insulation and continuity measurement bar graph. The new Voltage Widget, displays the L-N, L-E and N-E voltages.
Li-ION Battery solution
The Megger MFT-X1 is powered by the Megger Li-ION battery pack. The unique 4 AR rechargeable Li-ION battery provides the fastest and most flexible battery change solution in the industry.

APPLICATIONS

The primary application is the testing of low voltage electrical installations in domestic, commercial, and industrial installations for single and three phase systems. The wide range of test capabilities extend the use of the MFT-X1 to include:

EV charge point testing
Domestic PV testing
Motor/Generator testing
Machine testing
Portable appliance safety testing
Panel building and switchgear manufacturing
Cable testing

Graphical assistance
The instrument has context help to provide graphical circuit connection guidance for each of the measurements.
Accessories
The MFT-X1 is shipped in a rugged, weather-proof carry case offering outstanding protection and flexible storage. Also included is a complete set of test leads to meet the wide range of connection challenges in modern electrical systems.

FUNCTIONAL SUMMARY

Voltage measurement

Voltage range| 0.001 V to 2 V (mV range) 2 V to 600 V (V range), 1000 V DC (on-CAT rated circuits)
Voltage type:| Terms, AC, DC
Phase sequence| Automatic phase sequence testing on detection of valid three phase supplies
Current measurement (non-contact)
AC Trms| Using optional accessories: MCC1010 current clamp
Measurement Range| MCC1010: 1 mA to 300 A
Continuity/Resistance
Measurement range Digital display| 0.01 Ω to 999 kΩ Auto-ranging
Measurement Range Analogue arc| 0 Ω to 1 MΩ log scale
Test voltage| 4 V DC to 5 V DC
Test current (Nominal)|

200 mA 0 Ω >< 2 Ω 10 MA reduction on high resistance (actual current reported in display)

Test polarities| Forward polarity
Buzzer resistance range| > 0.01 Ω < 2 kΩ
Buzzer threshold| 0.3, 0.5, 1, 2, 3, 4, 5, 10, 20, 30, 40, 50, 100, 200 Ω
Insulation testing
Measurement range Digital display| 0.001 MΩ to 999 MΩ Auto-ranging
Measurement range Analogue arc| 0.001 MΩ to >1000 MΩ log scale
Insulation test voltages| 50 V DC to 1000 V DC + Variable 50 V to 999 V
Test current| 1 mA to 2 mA
Stabilised output voltage| Output test voltage stabilised to -0% +2% +2 V
True Loop ™ loop impedance testing
2 Wire – all modes|
Test types| Mode 1:    Non-Trip
| Mode 2:    High current
| Mode 3:    High resolution
Resolution| Non-Trip:         0.01 Ω
| High current:      0.01 Ω
| High resolution: 0.001 Ω
Voltage range| Non-trip: 48 V AC to 280 V AC
| High current: 48 V AC to 550V AC
| High resolution: 48 V AC to 550 V AC
Frequency range| 45 Hz to 65 Hz (all modes)
3 Phase testing| Non-trip: Single phase only
---|---
High current: Three phase
High resolution: Three phase
3 wire – non-trip|
Test types| RCD (non-trip) RCD EV (non-trip on 6mA EV RDCs)
Resolution| 0.01 Ω
Voltage range| 48 V AC to 280 V
Frequency range| 45 Hz to 65 Hz
3 Phase testing| Single phase only
Volt drop|
Volt drop calculation| Requires Zref (Ze) and circuit current (I-vdrop)
Accuracy| Dependent on loop impedance accuracy
RCD testing
RCD types supported| Type AC, A, B, AC(S), A(S), B(S)
Auto RCD sequence| 1/2x I∆n, 1x I∆n, 2x I∆n, 5x I∆n, Ramp, 0º/180º (customer configurable)
Ramp testing| 10 mA to 1000 mA
RDC testing| 6 mA RDC
Fault (Touch) voltage| 0 V to 253 V
Earth testing
2 wire| 2 wire earth resistance test

Megger MFT X1 Multifunction Tester - fig

SPECIFICATIONS

Voltage measurement

Function	Range	Accuracy
Voltage DC	0 V … ±1000 V	±1% ± 3 digits
Voltage AC/TRMS	0 V – 600 V (15 – 500 Hz)	±2% ± 1 digits
Frequency	15 Hz – 99 Hz
100 Hz – 500 Hz	±0.5% ± 2 digit

±2.0% ± 2 digit

Millivolt measurement

Function	Range	Accuracy
mV AC/TRMS	0 mV to ±1999 mV (50 / 60 Hz)	±1% ± 3 digits
mV DC	0 mV to ±1999 mV	±1% ± 3 digits

Live Earth detection
Indicates if the PE terminal is live when selecting the Loop or RCD test ranges. The relevant Loop or RCD test is inhibited.
Current

Function	Range	Accuracy
Current AC/TRMS	0.001 A – 0.100 A	±2% ±3 digits
0.100 A – 2.000 A	±2% ±3 digits
2.00 A – 20.00 A	±2% ±3 digits
20.0 A – 300.0 A	±2% ±3 digits
Frequency Bandwidth	15 Hz – 500 Hz
Influence of Frequency	30 Hz – 500 Hz ≤0.25 %

Resistance and Continuity

Function	Range	Test Current	Accuracy
200 mA	0.01 Ω – 99.9 Ω	(0 Ω – 2 Ω) 205 mA ±5 mA	±3% ±2 digits
10 mA	0.01 Ω – 99.9 Ω	10 mA	±3% ±2 digits
100 Ω – 999 kΩ		±5% ±2 digits
Open circuit voltage	4 V to 5 V

EN61557-4 Measurement Range: 0.10 Ω to 999 kΩ.

Insulation test

Function	Range	Accuracy
1000 V	0.001 – 999 MΩ	±3% ±2 digits

500 V

| 0.001 – 500 MΩ| ±3% ±2 digits

500 MΩ| ±10%

250 V

| 0.001 – 250 MΩ| ±3% ±2 digits

250 MΩ| ±10%

100 V

| 0.001 – 100 MΩ| ±3% ±2 digits

100 MΩ| ±10%
50 V| 0.001 – 50 MΩ| ±3% ±2 digits
50 MΩ| ±10%
VAR 50 V – 999 V| Leakage current > 1 mA| ±3% ±2 digits
Leakage current < 1 mA| ±10%
Leakage current| 0.1 µA – 1.99 mA| ±10%
Output voltage| -0% +2% +2 V at rated load or less
Voltage display| ±1% ± 3 V|
Short circuit current| 1.5 mA nominal|
Test current on load| 1 mA at min pass values of insulation
Maximum capacitance| 2 µF for a stable reading, 5 µF absolute limit

EN61557-2 Measurement Range: 0.10 MΩ to 999 MΩ.
Loop 2-Wire – No RCD (L-PE, L-N or L-L)

Function	Range	Accuracy
2-Wire HR	0.001 – 9.999	±2% ±0.030 Ω
2-Wire	0.01 Ω – 9.99 Ω	±2% ±5 digits
10.0 Ω – 99.9 Ω	±10% ±5 digits
100 Ω – 1999 Ω	±10% ±5 digits
Supply Voltage	48 V – 550 V
Supply Frequency	45 Hz – 65 Hz

Can be used to measure supply source resistance quickly and reliably between Line and PE or two Live conductors up to 550 V.
EN61557-3 Measurement Range: 0.30 Ω to 1999 Ω
Loop 2-Wire L-PE with RCD

Function	Range	Accuracy
0.01 Ω – 1999 Ω	±10% ±5 digits
Supply Voltage	48 V – 280 V
Supply Frequency	45 Hz – 65 Hz

Note: Uses the Megger Confidence Meter to measure the supply source impedance of circuits protected with an RCD rated ≥30 mA when there are only two connections possible. When a neutral is available the three-wire test will provide a quicker, more accurate result.
Note: RCD may trip if there are high leakage currents in the circuit under test. This measurement is immune to the effect of inductance found in some RCDs as it measures resistance (RCD Uplift).
EN61557-3 Measurement Range: 1.00 Ω to 1999 Ω
Loop 3-Wire L-PE with RCD

Designation	Test Current	Application
RCD	15 mA	For circuits protected by an RCD rated <= 30 mA
RDC EV	3 mA	For EV charger circuits protected by a RDC and a Type A RCD

rated <= 30 mA
Function| Range| Accuracy
---|---|---
| 0.01 Ω – 9.99 Ω| ±2% ±5 digits
| 10.0 Ω – 199 9 Ω| ±10% ±5 digits
Supply Voltage| 48 V – 280 V
Supply Frequency| 45 Hz – 65 Hz

Note: Uses the Megger Confidence Meter to measure the supply source impedance of circuits protected with an RCD when three connections are possible. The L-N Loop resistance needs to be less than 12 Ω. The resistances of the L-PE, L-N and N-PE loops are all shown, and the accuracy of the L-PE resistance depends on the maximum resistance displayed. When the neutral is not available the two-wire test must be used.
Note: RCD may trip if there are high leakage currents in the circuit under test. This measurement is immune to the effect of inductance found in some RCDs as it measures resistance.
EN61557-3 Measurement Range: 1.00 Ω to 1999 Ω

RCD Tests
Types A and AC

RCD Types	AC, A, AC(S), A(S)
RCD Rated Current (IΔn)	10 mA, 30 mA, 100 mA, 300 mA, 500 mA, 650 mA, 1000

Type B

RCD Types	B, B(S)
RCD Rated Current (IΔn)	10 mA, 30 mA, 100 mA, 300 mA
½ I no-trip Test Current	-10% – +0% (0.5 IΔn)
1 I, 2 I, 5 I trip test Current	-0% – +10% (2 IΔn)
Trip time	±1% ±1 ms
Trip current (ramp)	± 5%
Fault Voltage (0 V – supply)	+5% +15% ±0.5 V
Supply Voltage	48 V – 280 V
Supply Frequency	45 Hz – 65 Hz

RDC (Type EV) with a 30 mA Type A RCD

Test current| 2.0 mA increasing to 6.3 mA over 2s, before being held at that current for 10s.
---|---
Trip time| ±1% ±1 ms
Trip current (ramp)| ± 5%
Fault Voltage (0 V – supply)| +5% +15% ±0.5 V
Supply Voltage| 48 V – 280 V
Supply Frequency| 45 Hz – 65 Hz

Earth

Function	Range	Accuracy
2-Wire test	0.01 Ω – 1999 Ω	±2% ±3 digits
Test Frequency	128 Hz
Test Current	25 V 4.5 mA / 50 V 450 µA
Maximum auxiliary electrode resistance	5 kΩ for 25V or 100 kΩ for 50 V

Note: The 2-wire earth test measures resistance between the blue and green terminals using a 128 Hz square wave; the result includes the resistance of test leads.
EN61557-5 Measurement Range: 1 Ω to 1999 Ω.
Power supply

Li-ION rechargeable| 7.2 V DC 4400 mAh (non-serviceable) + charge status indication
---|---
Battery charger (Li-ion)| Input: 110 V/ 230 V AC 50/60Hz1.3 A
Output: 3 A 8.4 V DC
Battery Life| Li-ion: 4400 mAh = >15 hrs *times based on typical daily test profile
Battery Charging Time| Li-ion: 2.5 to 3 hrs (ambient temperature dependent)

Environmental

Conditions	Range
Operating Temperature	-10 °C to +55 °C
Storage Temperature	-25 °C to +70 °C
Operating Humidity	90% R.H. at +40 °C max
Ingress Protection	IEC 60529: IP 54 : Equipment is protected against ingress

of dust and water splashes and is suitable for indoor and outdoor use.
Vibration| MIL-PRF-28800F:class 2
Max. operating altitude| 2000 m
Pollution degree| 2

Mechanical

Length	274 mm (10.79 ”)
Width	96 mm (3.78 ”)
Depth	143 mm (5.63 ”)
Weight – Instrument only	1.57 kg (3.46 Ib)
Shipping weight	5.6 kg (12.35 ib)

Megger MFT X1 Multifunction Tester - fig1

ORDERING INFORMATION

Description	Part number
MFT-X1-BS Multifunction tester BS1363	1012-223
MFT-X1-SC Multifunction tester Schake	1012-225
MFT-X1-CH Multifunction tester Switzerland	1012-229
MFT-X1-AU Multifunction tester AUS/NZ	1012-230

Included accessories

Switched test probe SP5
Red test lead, probes, clips and grabbers
Blue test lead, probe, clips and grabbers
Green test lead, probe, clips and grabbers
Earth test spike and leads kit
Li-ion battery 4400 mAh
Li-ion battery charger
SIA10 MAINS socket interface adaptor UK (boxed)
Neck strap
Multipurpose hard base carry case
Quick start guide
Calibration certificate
Description| Part number
---|---
Optional and replacement accessories|
Multipurpose hard base carry case| 1014-985
Blow moulded carry case (Polypropylene)| 1013-453
Switched test probe SP5| 1002-774
Neck strap replacement| 1013-454
Li-ion battery 4400 mAh| 1013-450
SIA10 MAINS socket interface adaptor UK (boxed)| 1014-300
SIA20 Mains socket interface adaptor AU| 1007-170
SIA40 Mains socket interface adaptor SCHUKO| 1007-171
SIA45 Bipolar Mains socket interface adaptor SCHUKO| 1007-158
SIA50 Mains socket interface adaptor CH| 1007-164
SIA60 Mains socket interface adaptor USA| 1007-087
Li-ion battery charger| 1013-451
3 lead set RD/GN/BU non-fused (boxed)| 1014-291
3 lead pro set RD/GN/BU non-fused (boxed)| 1014-292
3 lead set RD/GN/BU fused 10 A (boxed)| 1014-295
3 piece grabber set RD/GN/BU (boxed)| 1014-299
7 piece probe and clip set RD/GN/BU (boxed)| 1014-301
3 lead RD/GN/BU fused 10 A (boxed) – fused leads only| 1014-304
Earth test spike and leads kit| 1001-810
MCC1010 Current clamp| 1010-516
MVC1010 Voltage clamp| 1010-518
MSA1363 socket adaptor UK| 1013-837
MTF230 – Schake (Type-F) Socket adaptor| 1013-838
LA-KIT Lamp adaptor kit| 1014-833
UKAS Calibration certificate| 1013-460

SALES OFFICE
Megger Limited
Radcliffe Road Dover
CT17 9EN England
T. +44 (0) 1304 502101
E. UKsales@megger.com
MFT-X1_DS_INT_en_V06
www.megger.com
ISO 9001
The word ‘Megger’ is a registered trademark

Documents / Resources

| Megger MFT-X1 Multifunction Tester [pdf] Owner's Manual
MFT-X1 Multifunction Tester, MFT-X1, Multifunction Tester, Tester
---|---
| Megger MFT-X1 Multifunction Tester [pdf] User Guide
MFT-X1 Multifunction Tester, MFT-X1, Multifunction Tester, Tester
| Megger MFT-X1 Multifunction Tester [pdf] User Guide
MFT-X1 Multifunction Tester, MFT-X1, Multifunction Tester, Tester