Megger MFT1741+ Multifunction Tester
Megger MFT1741+ Multifunction Tester
The Megger MFT1741+ Multifunction Tester is suitable for troubleshooting and verifying the installation and safety of industrial, commercial and domestic fixed wiring installations. To this end, it includes all the tests required to complete the necessary electrical certification for these systems. Used in conjunction with the Megger EVCA210-UK Electric Vehicle Charge-Point Adapter, (sold separetely) the user can carry out a full range of tests required for the installation of EV charge points thanks to the 6 mA DC testing feature.
The Megger MFT1741+ is particularly well suited to testing low voltage electrical installations in areas with high electrical noise and for conducting full single- and three-phase insulation testing. As indicated above it is able to conduct single- and three-phase RCD testing between 10mA and 1A.
Loop Impedance Measurement & Confidence Meter
The non-trip loop impedance testing technology also enables loop impedance testing of 10mA type AC and A RCDs. Additionally, non-trip loop impedance technology prevents RCDs influencing the total loop impedance value and increases the speed of testing: non-trip loop impedance tests can be performed in eight seconds. Furthermore, loop impedance tests are accompanied by a Confidence Meter. The meter will indicate the degree of confidence in the accuracy of the loop impedance measurement. This feature is useful as loop impedance values are particularly susceptible to changes in circuit noise. The Confidence Meter is designed to improve reliability; the digital ARC indicates the analytical process, and the measurement is continually monitored and adjusted in reference to the circuit noise. Another function present is its ability to test electric vehicle charge point RCDs; it includes automatic test sequences and a 6mA DC test (requires OPTIONAL accessory) for this purpose.
Measurements are viewable via the large, clear backlit display with a digital/ analogue arc for indicating fluctuating readings and a dual digital readout that displays precise readings and test parameters in parallel. For instance, the dual digital readout will display the output voltage used for the insulation test as well as the resistance value in MΩ. It is also possible to save readings to the tester’s internal memory (capacity for 1000 measurements); these results can be downloaded via Bluetooth.
Accessing the required measurement function and range is easy using the colour coded function controls. In addition to improving the efficiency and ease of testing, these controls also reduce the possibility of selecting the incorrect function or range. This instrument does not include complicated and/or hidden measurement menus.
Furthermore, it features an ambidextrous design with dual TEST and LOCK buttons on either side of the unit, ensuring that it is easy to operate for both right- and left-handed users. Moreover, the Megger MFT1741+ Multifunction Tester offers an automatic test start, removing the need to press the TEST button altogether. This function is particularly useful when holding probes and/or whilst on a ladder.
The Multifunction Tester has also been designed to stand independently; alternatively, it can be hung around the operator’s neck using the included neck strap. It is also equipped with internal rechargeable batteries that have a charge time of under four hours, allowing the user to maximise uptime. It also features a rubber over-mould which provides additional protection in tough environments and has an IP rating of 54 ensuring that it is resistant to dust and water ingress.
Th tester is EN61010 CAT IV safety rated: it is able to withstand accidental misuse and voltage transients. The safety rating also means that it can be connected anywhere within the low voltage network on the single and three-phase system.
Additionally, the tester will provide visual and audible warnings when a hazardous voltage is detected. If the Megger Multifunction Tester detects a live voltage during insulation and continuity tests it will indicate the value of the voltage on the display; should this voltage exceed a safe level the tester will halt testing and issue a warning beep. These features not only protect the user but also work to prolong the longevity of the instrument.
The Megger MFT1741+ Multifunction Tester is a versatile, practical and reliable instrument suitable for measuring a variety of electrical parameters. It can be used for electrical installation and verification applications pertaining to low voltage building wiring, as well as distribution testing scenarios.
Measurement Capabilities
| Insulation Ranges | |
| 100 V | X |
| 250 V, 500 V | X |
| 1000 V | X |
| Test voltage display | X |
| Adjustable buzzer threshold | X |
| Note | Includes input protection against live circuits up to 600V even when the insulation test is locked on. |
| Continuity and Resistance Ranges | |
| 200 mA test | X |
| 15 mA test | X |
| Adjustable buzzer threshold | X |
| Loop Testing | |
| 2 and 3 wire non-tripping L-PE 50 V ~ 280 V | X |
| 2 wire Hi current L-N 50 V ~ 280 V | X |
| 2 wire phase to phase L-L 50 V ~ 500 V | X |
| PSCC and PFC (20 kA max.) | X |
| Max. Zs display | X |
| R1 + R2 value | - |
| Touch voltage display on faulty earth | X |
| Earth Electrode Test | |
| 2 and 3 pole * | X |
| 3 pole ART and Stakeless method * | X |
| RCD Test | |
| 1/2, 1, 5 x I and ramp RCD test | X |
| Auto RCD test | X |
| Type AC, A and S RCDs | X |
| Type B (pure DC) RCDs | X |
| Programmable RCD | X |
| 3-phase RCD (no earth) | X |
| 10, 30, 100, 300 and 500 mA RCD | X |
| Auto sequence for EV charge point RCDs* | X |
| Other Features | |
| Supply measurement | X |
| True RMS (Voltage and Frequency) | X |
| Leakage current measurement * | X |
| Phase rotation | X |
| Calibration certificate | X |
| Rechargeable batteries (charger included) | X |
| SP5 Switched probe included | X |
| Warranty from Megger upgradeable to 3 years FREE | X |
| Onboard memory with Bluetooth® download | X |
| CAT IV 300 V / CATIII 600 V | X |
| Hard moulded case | - |
| Soft pouch with additional storage | X |
| Confidence meter noise reduction | X |
| New hardware loop test platform | X |
| Notes | * requires optional accessory |
| X = Included | |
| - = Not Included | |
Videos
Testing vehicle charging points with MFT1741+ and EVCA210
Key Features
- Troubleshoot and verify the installation and safety of industrial, commercial and fixed wiring installations
- Includes all the tests required to complete the necessary electrical certification for the aforementioned electrical systems
- Ideal for testing low voltage electrical installations in areas with high electrical noise
- Suitable for conducting full single- and three-phase compliant insulation testing
- Conduct single- and three-phase RCD testing between 10mA and 1A
- NEW non-trip loop impedance technology
- Test 10mA type AC and A RCDs
- Prevents RCDs from influencing total loop impedance values
- Non-trip loop impedance tests can be performed in eight seconds
- NEW Confidence Meter: indicates the confidence in the accuracy of the loop impedance result
- Confidence Meter improves reliability: digital ARC indicates the analytical process, and the measurement is continually monitored and adjusted in reference to the circuit noise
- NEW: test EVSE RCDs
- NEW automatic test sequences for EVSE RCDs
- NEW 6mA DC test (requires OPTIONAL accessory) for testing EVSE RCDs
- Large, clear backlit display
- Digital/ analogue arc indicates fluctuating readings
- Dual digital readout: indicates the precise reading and the test parameters simultaneously
- Internal memory: capacity for 1000 readings
- Download measurements via Bluetooth
- Colour coded function controls
- No complicated screens
- No hidden menus
- Ambidextrous design: TEST and LOCK buttons on either side of the unit
- Automatic test start: frees up the user’s hands for holding probes
- Can stand independently
- Can be hung around the operator’s neck using the included neck strap
- Internal rechargeable batteries: recharge in under four hours
- Rubber over-mould for protection in tough environments
- IP54
- EN61010 CAT IV safety rated: can withstand accidental misuse and voltage transients
- Can be connected anywhere within the low voltage network on single and three-phase systems
- Visual and audible warning when hazardous voltages are detected
- Displays the voltage value when a live voltage is detected during insulation and continuity tests
- When the detected voltage exceeds a safe level testing will be stopped and a warning beep is issued
- A versatile, practical and reliable electrical tester
What Accessories Come with the MFT1741+?
- Printed Quick Start Guide
- Full User Guide (CD)
- Calibration Certificate
- Megger SP5 Switched Probe
- Megger Neck Strap
- 3-Wire Lead Set with Prods and Clips
- Mains Plug Test Lead (BS1363)
- AC Battery Charger
- Large Soft Pouch with Extra Storage
Megger MFT1741+ Multifunction Tester Technical Specifications
| Insulation Test | ||
| Output voltage | -0% +20% at rated load or less | |
| Voltage display | ±3% ±3 digits ±0.5% of rated voltage | |
| Short circuit current | 1.5 mA nominal test current | |
| Test current on load | 1 mA at min pass values of insulation | |
| Insulation Accuracy | ||
| 1000 Volts | 10 kΩ ~ 999 MΩ | ±3% ±2 digits |
| 500 Volts | 10 kΩ ~ 500 MΩ | ±3% ±2 digits |
| >500 MΩ | ±10% ±4 digits | |
| 250 Volts | 10 kΩ ~ 250 MΩ | ±3% ±2 digits |
| >250 MΩ | ±10% ±4 digits | |
| 100 Volts | 10 kΩ ~ 100 MΩ | ±3% ±2 digits |
| >100 MΩ | ±10% ±4 digits | |
| Resistance and Continuity | ||
| 0.01 Ω ~ 99.9 Ω | ±2% ±2 digits | |
| 100 Ω ~ 99.9 kΩ | ±5% ±2 digits | |
| Open circuit voltage | 5 V ±1 V | |
| Test current (user selectable) | (0 Ω ~ 2 Ω) | |
| 205 mA ±5 mA | ||
| 15 mA ±5 mA (user selectable) | ||
| Loop Test | ||
| Live to earth/neutral supply | 48 V ~ 280 V (45 Hz ~ 65 Hz) | |
| Live to live supply | 48 V ~ 500 V (45 Hz ~ 65 Hz) | |
| L-N/L-L tests | ±5% ±5 digits | |
| L-E tests | 0.1 Ω ~ 39.9 Ω | ±5% ±5 digits ± noise margin |
| 40.0 Ω ~ 1000 Ω | ±10% ±5 digits | |
| Display range | 0.01 Ω ~ 1000 Ω | |
| Live to earth PFC range | 20 kA | |
| Live to live PSCC range | 20 kA | |
| Notes |
† Reference conditions apply For test environments see service data |
|
| RCD Tests | ||
| Supply up to 100 mA | 48 V ~ 480 V (45 Hz ~ 65 Hz) | |
| Supply up to 1 A | 48 V ~ 280 V | |
| RCD type | Type AC, A, S | |
| Type B (pure dc) | ||
| No trip test | (1/2xI) | –10% ~ –0% |
| Trip test | (1xI, 2xI and 5xI)+0% ~ +10% | |
| EV | 30 mA ac, 6 mA dc (Mode 1 + 2) | |
| (Mode 1 + 2) Ramp Test | ||
| Touch voltage (0 ~ 253 V) | +5% +15% ±0.5 V | |
| Trip time | ±1% ±1 ms | |
| Trip current | ±5% | |
| Step Increments | ||
| VAR (variable RCD selection) | 10 mA ~ 50 mA | 1 mA steps |
| 50 mA ~ 500 mA | 5 mA steps | |
| 500 mA ~ 1000 mA | 10 mA steps | |
| Supply Measurement | ||
| Voltage | 10 V ~ 600 V | |
| (15 ~ 400 Hz) True RMS | ||
| ±3% ± 1 V ±2 digits | ||
| Phase rotation indication | L1–L2–L3 and L1–L3–L2 | |
| Frequency | 15 Hz ~ 99 Hz ±0.5% ±1 digit | |
| 100 Hz ~ 400 Hz ±2.0% ±2 digits | ||
| Frequency resolution | 0.1 Hz | |
| Power Supply | ||
| Batteries | IEC LR6 type AA alkaline (6 cells - supplied) or 1.2 V NiMH (rechargeable pack of 6 – supplied) | |
| Mains charger for on-board re-charging (4 hours typical) 12 V car charger (cigar lighter lead - optional) | ||
| Earth/ Ground Test | ||
| Resolution | 0.01 Ω | |
| Current | 0.45 mA or 4.5 mA | |
| Noise rejection | 20 V pk/pk (7 V rms) | |
| Max probe resistances | Rp and Rc | |
| 100 kΩ @ 50 V | ||
| 5 kΩ @ 25 V | ||
| 2 and 3 pole method | (0.01 Ω ~ 1.999 kΩ) | |
| ±2.0% ±5 digits | ||
| ART method (1.00 Ω ~ 1.999 kΩ) | ||
| ±5.0% ±5 digits* | ||
| Stakeless method | (1.00 Ω ~ 199 Ω) | |
| ±7.0% ±5 digits* | ||
| Current | ||
| (via optional clamp meter) | ±5.0% ±3 digits. | |
| Range | 0.1 mA to 200 A ac | |
| Resolution | 0.1 mA | |
| mV Sensor Input | ||
| Including temperature (third party module) | ±1.0% ±2 digits | |
| Range | 0.0 mV to ±199.9 mV dc | |
| Resolution | 0.1 mV | |
| Data storage | ||
| Capacity | 1000 results | |
| Bluetooth® communication | ||
| Safety | IEC 61010-1:2010 | |
| IEC 61010-30:2010 | ||
| IEC 61010-031:2008 | ||
| 600 V CAT III / 300 V CAT IV | ||
| (Max Phase to Phase 600 V) | ||
| IEC 61557:2007 parts 1 to 10 | ||
| EMC | IEC61326 edition 2 location class B | |
| Operating temperature range and humidity | -10 °C ~ +55 °C | |
| 90% R.H. at +40 °C max | ||
| Storage temperature range and humidity | -25 °C ~ +70 °C | |
| Maximum altitude | 2000 m | |
| Weight (instrument and case) | 1 kg (with batteries, excluding case) | |
| Dimensions (instrument and case) | 220 mm H x 390 mm W x 285 mm D | |
| IP rating | IP54 | |
| Calibration temperature | +20 °C | |
| Temperature coefficient | <0,1% per °C For test environments see service data. | |
| SKU | 1012-611 |
|---|---|
| Manufacturer Part Code | 1012-611 |
| Country of Origin | United Kingdom |
