Megger MFT-X1 Multifunction Electrical Tester – Advanced Testing for Low Voltage Installations & EV Chargers

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Megger MFT-X1 Multifunction Electrical Tester – Advanced Testing for Low Voltage Installations & EV Chargers

The Megger MFT-X1 Multifunction Tester delivers advanced testing capabilities for low voltage installations, including EV chargers, with user-friendly features and a rugged design.

With its high-accuracy measurements and upgradeable operating system, it’s the ideal tool for electrical professionals seeking reliability and efficiency in their testing processes.

FEATURES

True Loop™ test with patented Confidence Meter™
CertSuite Installation 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

MFT-X1-Datasheet

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Description
Specification

Megger MFT-X1 Multifunction Tester Overview

The Megger MFT-X1 Multifunction Tester is a state-of-the-art device designed for testing low voltage electrical installations in a variety of settings, including domestic, commercial, and industrial applications.

With its extensive range of features and capabilities, the MFT-X1 stands out as a reliable tool for electrical professionals.

Megger Confidence Meter Technology: Faster and More Accurate Loop Testing

The Megger Confidence Meter technology revolutionises loop impedance testing by delivering faster, more reliable results. Supporting all loop impedance ranges, this patented technology significantly reduces test times for non-trip loop testing—down to just 7 seconds on quiet circuits. It also optimises testing in noisy electrical supplies, ensuring accurate and stable results.

The Confidence Meter actively monitors test progress and detects noise on the circuit, eliminating erroneous readings and providing consistent results every time.

Easily Download and Manage Results with the MFT-X1 and CertSuite

With the MFT-X1, installation test results can be tagged with circuit data and seamlessly transferred for efficient record-keeping. Combined with the CertSuite software, managing and certifying your test results has never been easier.

Whether you need faster testing, accurate measurements, or simplified report management, Megger tools are designed to enhance your electrical testing workflow.

Key Features

Advanced Testing Capabilities

The MFT-X1 offers exceptional testing accuracy with high-resolution loop impedance testing. It enhances the low end of the impedance range with a resolution of 0.001 ohms, allowing for realistic low impedance measurements.

Additionally, it provides advanced features for RCD testing, including a custom test configurator to optimise testing sequences to meet specific requirements.

EV Charge Point Testing

As electric vehicles become more prevalent, the MFT-X1 is perfectly equipped to test EV charger installations, including both RCD Type B and RDC protected charge points. When paired with the optional Megger EVCA adaptor, the MFT-X1 can efficiently test all known EV chargers, ensuring safe and suitable installations.

Stabilised Insulation Test Voltage

For accurate insulation testing, the MFT-X1 introduces a stabilised insulation test voltage, ensuring output voltage remains accurate within +/-2% +2 digits. This reliability mitigates the risk of over-voltage, making it especially crucial for sensitive components and circuits in various installations.

User-Friendly Interface

The device features a high-contrast 480 x 272 colour TFT bonded display that offers significant flexibility for its users. It includes a monochrome mode optimised for challenging lighting conditions, ensuring that testing can continue in less-than-ideal environments.

The thoughtfully-designed user interface features hot keys for critical functions and an intuitive rotary dial for easy test selections, even when wearing gloves.

Upgradeable Operating System

The MFT-X1 ensures longevity and adaptability with its customer-upgradeable operating system. By simply downloading updates from the Megger website onto a microSD card, users can keep their device current without the need for expert assistance, thereby enhancing its ongoing usability.

Extended Applications

This multifunction tester is not limited to just one type of testing. The MFT-X1 is suitable for a wide range of applications, including:

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

Convenient Accessories

Included with the MFT-X1 is a rugged, weather-proof carry case for excellent protection and easy transport. Additionally, a comprehensive set of test leads is provided, helping to address the complex connection requirements of modern electrical systems.

Conclusion

The Megger MFT-X1 Multifunction Tester combines innovation, accuracy, and user-friendly design to deliver superior performance for electrical testing. Whether undertaking low voltage installations or ensuring compliance in varied applications, the MFT-X1 is the ideal choice for professionals seeking reliability and efficiency in their toolkit.

Equip yourself with the MFT-X1 and experience unparalleled testing capabilities today!

Specification

FUNCTIONAL SUMMARY

Voltage measurement
Voltage range	0.001 V to 2 V (mV range) 2 V to 600 V (V range), 1000 V DC (Non-CAT rated circuits)
Voltage type:	Trms, 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 Auto 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
3 wire	3 wire earth resistance
3 wire ART	3 wire testing with additional MCC1010 current clamp
Stakeless	Stakeless testing using the MCC1010 and MVC1010 clamps

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.

Safety and electrical protection

Safety rating:

CAT III 600 V / CAT IV 300 V to EN 61010, IEC 61010-031 : 2015,

IEC 61010-030.

Safety category rating valid to altitude of 2000 m.

Live voltage:

Active live voltage protection to 600 V between any test terminals without blowing a fuse. Live voltage warning on display and audible when >5 V is applied between any test terminals. Fuse protected to

1000 V, fuses are not user changeable.

Insulation test

Function	Range	Accuracy
1000 V	0.001 – 999 MΩ	±3% ±2 digits
500 V	0.001 – 500 MΩ	±3% ±2 digits
500 V	> 500 MΩ	±10%
250 V	0.001 – 250 MΩ	±3% ±2 digits
250 V	> 250 MΩ	±10%
100 V	0.001 – 100 MΩ	±3% ±2 digits
100 V	> 100 MΩ	±10%
50 V	0.001 – 50 MΩ	±3% ±2 digits
50 V	> 50 MΩ	±10%
VAR 50 V – 999 V	Leakage current > 1 mA	±3% ±2 digits
VAR 50 V – 999 V	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 mA, VAR
½ I no-trip Test Current	-10% – +0% 0.5 IΔn
1 I, 2 I, 5 I trip test – AC current	-0% – +10% M • IΔn
1 I, 2 I, 5 I trip test – pulsed DC current	-0% – +10% 1.4 • M • IΔn
Trip time	±10%
Ramp trip test current	±5%
Fault Voltage (0 V – supply)	+5% +15% ±0.5 V
Supply Voltage	48 V – 280 V
Supply Frequency	45 Hz – 65 Hz

Type B

RCD Types	B, B(S)
RCD Rated Current (IΔn)	10 mA, 30 mA, 100 mA, 300 mA, 500 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	±10%
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 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	4.5 mA
Maximum auxiliary electrode resistance (3-wire test)	5 kΩ

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.

Function	Range	Accuracy
3 wire test	0.01 Ω to 1999 Ω	±2% ±3 digits
Test frequency	128 Hz
Test current	25 V, 4.5 mA
Maximum auxiliary electrode resistance	5 kΩ for 25V

Function	Range	Accuracy
3P ART	0.01 Ω to 1999 Ω	±5% ±3 digits
Test frequency	128 Hz
Test current	25 V, 4.5 mA
Minimum test current through the clamp	5 %
Maximum auxiliary electrode resistance	5 kΩ for 25V or 100 kΩ for 50 V

EN 61557-5 Measurement Range: 1 Ω to 1999 Ω.

Function	Range	Accuracy
Stakeless	1.0 Ω to 60 Ω	±7% ±5 digits
Test frequency	128 Hz

EN 61557-5 Measurement Range: 1.00 Ω to 40.0 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, 50/60Hz, 1.3 A Output: 3 A, 8.4 V DC
Battery life (Li-ion)	Li-ion: 4400 mAh = >15 hrs* Continuity: Approximately 2000 tests using Li-ion battery (0.5s test every 30s per EN 61557) Insulation: Approximately 1400 tests using Li-ion battery (0.5s test every 30s per EN 61557) Earth: Approximately 1600 tests using Li-ion battery *times based on typical daily test profile
Battery charging time	Li-ion: 2.5 to 3 hrs (ambient temperature dependent)
LR6 (AA) battery module	8 x LR6 (AA) Alkaline batteries

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
Maximum operating altitude	2000 m
Pollution degree	2