Megger MFT1721-BS Multifunction Tester
Test even more with Megger's MFT1721, the upgraded version of Megger's MFT1711!
The mid-range model in the series, the new inclusions are 100V insulation testing, true RMS voltage measurements, mV sensor input and type B RCD compatibility. The tester is fully suitable for use in all low voltage electrical installations, including those found in domestic, commercial and industrial environments.
Megger's MFT1721 is the next-generation version of the highly popular mid-range tester, the MFT1720. It features a large, bright LCD display which shows dual parameters (loop resistance/fault current or insulation resistance/test voltage) and dual-testing buttons on either side for easy test activation.
You can work confidently and safely with the MFT1721; this tester include IP54 protection against dust and water damage, a rubber-moulded grip for extra protection and easier holding and is EN 61010 CAT IV safety rated. It also comes with class-leading input protection to ensure it can withstand accidental misconnections or voltage transients which may damage other testers without this capability.
The MFT1721 is packed full of testing functions including insulation with selectable test voltage, continuity and resistance testing at 200mA and 15mA, several loop testing functions, multiple RCD tests on AC, A, S, type B and programmable RCDs and other features such as phase rotation indication and leakage current measurements.
Megger MFT1721-BS Multifunction Tester Key Features
- Insulation tests at 100V (NEW), 250, 500 and 1000V with input protection against live circuits up to 600V
- Continuity resistance tests at 200mA or 15mA
- Automatic start - no need to press the test button, leaving both hands free to hold probes
- Resistance range up to 100kΩ with fast continuity buzzer at selectable thresholds
- Earth loop testing with 3 and 3 wire non-trip range and 2 wire High current (including phase to phase)
- Prosepective fault current measurements up to 20kA
- RCD tests on AC, A, S, B (NEW) and programmable RCDs
- Automatic RCD testing
- 1/2, 1, 5 x I and ramp RCD testing
- Supply measurements
- True RMS for added accuracy when testing on irregular waveforms (NEW)
- Leakage current measurements
- mV sensor input (NEW)
- Phase rotation indication
- CAT IV 300V and CAT III 600V safety rated
What's Included?
- Megger MFT1721-BS Multifunction Tester
- Full User Guide on CD
- Calibration Certificate
- SP5 Switched Probe
- Neck Strap
- 3 Wire Lead Set + Probes and Clips
- Mains Plug Test Lead (BS1363)
Optional Accessories
Interested in these extras? Give us a call directly quoting the part number and we'll be able to help you out with prices and availaibility!
Part numbers in bold.
- 1000-631 - Megger Powersuite Lite Software (please note that this is manual-entry, you can't download from the tester directly)
- 2000-674 - Euro Mains Test Lead SIA45 (not AU)
- 1001-975 - Fused 10A Test Lead Set (Red/Blue/Green) with Probes + Clips
- 1000-215 - ETL30 Extension Test Lead (30m)
- 1000-217 - ETL50 Extension Test Lead (50m)
- 5280-332 - Cigar Lighter Adapter for Battery Charging in Vehicle
- 1001-687 - SP5 Switched Probe (Silicone)
- 1001-012 - ICLAMP Current Measurement Clamp
- 1001-013 - VCLAMP Voltage Inducing Clamp, Calibration Check PCB and Lead
- 1006-408 - Test and Carrying Pouch
- 1007-463 - Large Soft Pouch with Extra Storage
Megger MFT1700 Series Comparison Chart
There are three models in the Megger MFT1700 series; the entry-level MFT1711, the mid-range MFT1721 and the advanced MFT1731.
Why not consider upgrading to the MFT1731? This model includes everything on the MFT1721 plus downloadable memory and earth testing functions!
This table outlines the difference between each product in the series.
| Model Number | MFT1711 | MFT1721 | MFT1731 |
|---|---|---|---|
| Insulation Testing | - | √ | √ |
| 100V Test Voltage | √ | √ | √ |
| 250, 500V Test Voltage | √ | √ | √ |
| 1000V Test Voltage | √ | √ | √ |
| Test Voltage Display | √ | √ | √ |
| Adjustable Buzzer Threshold | - | √ | √ |
| Continuity and Resistance Testing | |||
| 200mA Test | √ | √ | √ |
| 15mA Test | - | √ | √ |
| Adjustable Buzzer Threshold | √ | √ | √ |
| Loop Testing | |||
| 2 and 3 Wire Non-Tripping; L-PE (50V to 280V) | √ | √ | √ |
| 2 Wire High Current; L-N (50V to 280V) | √ | √ | √ |
| 2 Wire Phase to Phase; L-L (50V to 500V) | - | √ | √ |
| PSCC and PFC (20kA Max) | √ | √ | √ |
| Max Zs Display | √ | √ | √ |
| R1 + R2 Display | - | √ | - |
| Touch Voltage Display on Faulty Earth | √ | √ | √ |
| Earth Electrode Test | |||
| 2 and 3 Pole (Requires Optional Accessory) | - | - | √ |
| 3 Pole Art and Stakeless Method (Requires Optional Accessory) | - | - | √ |
| RCD Tests | |||
| 1/2, 1, 5 x I and Ramp | √ | √ | √ |
| Auto RCD Tests | √ | v | √ |
| Type AC, A and S RCD Compatibility | √ | √ | √ |
| Type B (Pure DC) RCD Compatibility | - | √ | √ |
| Programmable RCD Compatibility | √ | √ | √ |
| 3-Phase RCD (No Earth) Compatibility | - | √ | √ |
| 30, 100, 300 and 500mA RCD Compatibility | √ | √ | √ |
| 10mA and 1000mA RCD Compatibility | 10mA only | √ | √ |
| Additional Features | |||
| Supply Measurements | √ | √ | √ |
| True RMS | √ | √ | √ |
| Leakage Current Measurements (Requires Optional Accessory) | - | √ | √ |
| Phase Rotation | - | √ | √ |
| Calibration Certificate Included | √ | √ | √ |
| Rechargeable Batteries (with Charger Included) | - | - | √ |
| SP5 Switched Probe Included | - | √ | √ |
| Warranty Upgradeable to 3 Years (FREE) | √ | √ | √ |
| On-Board Memory with Bluetooth Download | - | - | √ |
| CAT IV 300V / CAT III 600V | √ | √ | √ |
| Hard Moulded Case | √ | √ | - |
| Soft Pouch with Additional Storage | - | - | √ |
Accessories
There are a number of additional accessories available for the Megger MFT1721-BS Multifunction Tester; please see the table below for details. For further information please contact our sales team prior to purchase.
| Our Stock Code | Megger's Part Number | Product |
| 1006-408 | 1006-408 | Test & Carry Pouch MFT1700 Series |
| 1005-135 | 1005-135 | Unfused Lead Set Si Red/Blue/Green |
| ICLAMP | 1001-012 | ICLAMP Current Clamp |
| VCLAMP | 1001-013 | VCLAMP Voltage Clamp |
| 1010-518 | 1010-518 | MVC1010 Voltage Clamp |
| 1010-516 | 1010-516 | MCC1010 Current Clamp |
| 1011-275 | 1011-275 | MCC1010 Lead Accessory |
| 1011-274 | 1011-274 | MVC1010 Lead Accessory |
| 2007-998 | 2007-998 | XTL50 Extended Test Lead (50 m) |
| 2007-997 | 2007-997 | XTL30 Extended Test Lead (30 m) |
| 2001-649 | 1004-319 | Blow Moulded Case MFT17/1800 |
| MEGMTA4 | 1004-326 | Instrument/Document carry case |
| MEGLOA20 | 1004-183 | DC Car Charger 2.5mm Pin |
| 1007-003 | 1007-003 | Case Catch - Pack of 10 |
| 1002-735 | 1002-735 | Battery NiMH (X6) - MFT17/18 |
| 1007-463 | 1007-463 | MFT Carry Case - Large |
| 1001-975 | 1001-975B | Fused LeadSet B,R,G F10A 50kAb (Boxed) |
| 1001-977 | 1001-977B | Fused Lead Set Red Green F10A 50kA (Boxed) |
| MEGMTA1 | 1001-991B | Unfused Lead R/G/B, R/B LgTip (Boxed) |
| MEGITA1 | 1002-001B | Unfused Lead Set, Red/Black (Boxed) |
| MEGRCDA4 | 1002-015B | Fused Lead Set, Red/Black (Boxed) |
| 1002-490 | 1002-490B | Prod & Clip Set- MFT/LOOP Boxed |
| 1001-976 | 1003-132B | Unfused Lead Set Red, Green (Boxed) |
| 6220-810 | 1004-323B | SIA10 Interface Adaptor UK 3-Lead(Boxed) |
| 1002-774 | 1007-157B | SP5 Remote Switched Probe (Boxed) |
| 2001-509 | 1007-161B | Carry Strap MFT17/18 Accessory |
| MEGSW1 | 1000-631 | Megger Powersuite Lite - 17th Edition and PAT Certification Software |
| MTB7671 | 1002-224 | MTB7671/2 Megger Test Box |
| Please note that the accessories listed above and the datasheets attached are subject to change. Both were correct at the time of publication. | ||
Megger MFT1711, MFT1721 and MFT1731 Technical Specifications
Please be aware that not all features are available for every model. If a feature is not included on a model, there will be a note next to each section.
| Insulation Tests | |
| Output Voltage | -0 to +20% at rated load or less |
| Voltage Display | ±3% ±3 digits ±0.5% of rated voltage |
| Short Circuit Current | 1.5mA nominal test current |
| Test Current on Load | 1mA at min pass values of insulation |
| Insulation Accuracy | |
| 1000V | 10kΩ to 999MΩ (±3% ± 2 digits) |
| 500V | 10kΩ to 500MΩ (±3% ± 2 digits) |
| >500MΩ (±10% ± 4 digits) | |
| 250V | 10kΩ to 250Ω (±3% ± 2 digits) |
| >250MΩ (±10% ± 4 digits) | |
| 100V | 10kΩ to 100MΩ (±3% ± 2 digits) |
| >100MΩ (±10% ± 4 digits) | |
| Resistance and Continuity | |
| Range and Accuracy | 0.01 to 99.9Ω (±2% ± 2 digits) |
| 100 to 99.9kΩ (±5% ± 2 digits) | |
| Open Circuit Voltage | 5V ± 1V |
| Test Current (0 to 2Ω) | 205mA ±5mA |
| 15mA ±5mA (user selectable) | |
| Loop Test | |
| Live to Earth/Neutral Supply | 48 to 280V (45 to 65Hz) |
| Live to Live Supply (Not Available on MFT1711) | 48 to 500V (45 to 65Hz) |
| L-N/L-L Tests | ±5% ±5 digits |
| L-E Tests | 0.1 to 39.9Ω (±5% ±5 digits ± noise margin) |
| 40Ω to 1000Ω (±10% ± 5 digits) | |
| Display Range | 0.01 to 1000Ω |
| Live to Earth PFC Range | 20kA |
| Live to Live PSCC Range | 20kA |
| RCD Tests | |
| Supply up to 100mA | 48 to 480V (45 to 65Hz) |
| Supply up to 1A | 48V to 280V |
| RCD Type | Type AC, A and S |
| Type B (Pure DC) | |
| No-Trip Test (1/2xI) | -10 to -0% |
| Trip Test (1xI, 2xI and 5xI) | +0 to +10% |
| Ramp Test Touch Voltage (0 to 253V) | ±5% +15% ±0.5V |
| Trip Time | ±1% ±1ms |
| Trip Current | ±5% |
| Step Increments | |
| VAR (Variable RCD Selection) | |
| 10mA to 50mA | 1mA steps |
| 50mA to 500mA | 5mA steps |
| 500mA to 1000mA | 10mA steps |
| Supply Measurement | |
| Voltage | 10V to 600V (15 to 400Hz) True RMS |
| Voltage Accuracy | ±3% ±1V ±2 digits |
| Phase Rotation Indication | L1-L2-L3 and L1-L3-L2 |
| Frequency | 15Hz to 99Hz (±0.5% ±1 digit) |
| Frequency Resolution | 0.1Hz |
| Power Supply | |
| MFT1711 and MFT1721 | IEC LR6 type AA alkaline batteries |
| MFT1731 | 1.2V NiMH Rechargeable Batteries Mains charger for on-board recharging (4 hours typical) 12V optional car charger available |
| Earth/Ground Test (MFT1731 Only) | |
| Resolution | 0.01Ω |
| Current | 0.45mA or 4.5mA |
| Noise Rejection | 20V pk/pk (7V rms) |
| Max Probe Resistance (Rp and RC) | 100kΩ @ 50V |
| 5kΩ at 25V | |
| 2 and 3 Pole Method | 0.01 to 1.999kΩ (±2.0% ± 3 digits) |
| ART method (1.00Ω to 1.999kΩ) with accuracy of ±5.0% ± 3 digits | |
| Stakeless Method | 1.00 to 199Ω (±7.0% ± 3 digits) |
| Current (Via Optional Clamp Meter) | |
| Range | 0.1mA to 200A AC (5.0% ± 3 digits) |
| Resolution | 0.1mA |
| MV Sensor Input (MFT1721 and MFT1731) | |
| Including Temperature | 0.0mV to ±199.9mV DC (±1.0% ± 2 digits) |
| Resolution | 0.1mV |
| Data Storage (MFT1731 Only) | |
| Capacity | 1000 results |
| Communication | Bluetooth |
| Safety | |
| IEC 61010-1: 2010 IEC 61010-30: 2010 IEC 61010-031: 2008 600V CAT III / CAT IV 300V (Max phase to phase 600V) IEC 61557: 2007 parts 1 to 10 |
|
| EMC | IEC61326 edition 2 location class B |
| Operating Temperature Range and Humidity | -10 to +55°C (90% RH at +40°C max) |
| Storage Temperature Range and Humidity | -25 to +70°C |
| Maximum Altitude | 2000m |
| Weight (Instrument and Case) | 1kg (with batteries) |
| Dimensions (Instrument and Case) - MFT1711 and MFT1721 | 150mm x 85 x 235mm (H x W x D) |
| Dimensions (Instrument and Case) - MFT1731 | 220 x 390 x 285mm (H x W x D) |
| IP Rating | IP54 |
| Calibration Temperature | +20°C |
| Temperature Coefficient | <0.1% per °C |
| SKU | 1008-123 |
|---|---|
| Manufacturer Part Code | 1008-123 |
| Country of Origin | United Kingdom |
