MFT1711 - Measuring equipment Megger - Free user manual and instructions
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| Product Type | Multifunction Installation Tester |
| Brand | Megger |
| Model | MFT1711 |
| Dimensions (HxWxD) | 68 x 135 x 230 mm (2.7 x 5.3 x 9.1 in) |
| Weight | 1.2 kg (2.6 lb) including batteries |
| Power Supply | 6 x 1.5 V AA alkaline batteries (LR6) |
| Display | Backlit LCD with digital and analog bargraph |
| Insulation Resistance Range | Up to 200 GΩ at test voltages of 50 V, 100 V, 250 V, 500 V, 1000 V |
| Continuity Resistance Range | 0.01 Ω to 100 kΩ with test current 200 mA |
| Voltage Measurement Range | 0 V to 600 V AC/DC (True RMS) |
| Earth Resistance Range | 0.01 Ω to 50 kΩ using 3-wire or 2-wire method |
| Continuity Test Current | 200 mA (2-wire) or 25 A (4-wire with optional probe) |
| Safety Rating | CAT III 600 V, CAT IV 300 V |
| Ingress Protection | IP54 (dust and splash proof) |
| Operating Temperature | -10 °C to +55 °C (14 °F to 131 °F) |
| Storage Temperature | -20 °C to +70 °C (-4 °F to 158 °F) |
| Standards Compliance | IEC 61010-1, IEC 61557-1 to -7 |
| Key Functions | Insulation, continuity, voltage, earth, phase rotation, RCD testing |
| Maintenance | Clean with a damp cloth, no solvents; calibrate annually |
| Spare Parts & Repairability | Test leads, battery compartment, fuse; service by authorized technician |
| Average Battery Life | Approximately 1500 tests (typical) |
Frequently Asked Questions - MFT1711 Megger
What type of batteries does the Megger MFT1711 use?
It uses 6 AA alkaline batteries (LR6). For best performance, use high-quality alkaline or rechargeable NiMH batteries.
How do I perform an insulation test with the MFT1711?
Turn the function dial to one of the insulation voltage settings (50-1000 V). Connect the test leads, then press and hold the TEST button. Read the resistance from the display and the analog bargraph. Release the button to stop the test.
What is the meaning of the CAT IV 300 V rating?
CAT IV 300 V means the instrument is designed for measurements on the source side of the main supply (e.g., utility connections) with a maximum voltage of 300 V phase-to-earth. It provides enhanced safety against transient overvoltages.
Can the MFT1711 test RCDs?
Yes, the MFT1711 includes an RCD (Residual Current Device) testing function. You can test Type AC and Type A RCDs with various trip currents and delays.
How do I calibrate or check the accuracy of my MFT1711?
Megger recommends an annual calibration by an accredited service center. A simple self-check can be done using the supplied test leads and known resistors, but this is not a substitute for formal calibration.
What does the 'FUS' warning on the display mean?
'FUS' indicates a blown fuse inside the instrument. Replace the fuse with the specified type (usually a 500 mA or 10 A ceramic fast-blow fuse). Refer to the manual for exact location and rating.
Is the MFT1711 suitable for testing solar panel installations?
Yes, its insulation test voltages up to 1000 V and earth resistance functions make it suitable for photovoltaic system commissioning and maintenance. However, always follow safety procedures and ensure panels are isolated.
How can I retrieve and download test results from the MFT1711?
The MFT1711 does not have built-in data logging or USB transfer. Results must be manually recorded. For data logging, consider the MFT1720 or MFT1730 models with Bluetooth and memory.
What is the maximum voltage I can safely measure with this tester?
The MFT1711 can measure up to 600 V AC/DC directly. For higher voltages (up to 1000 V) only during insulation testing. Never exceed the CAT rating: CAT III 600 V or CAT IV 300 V.
Where can I find replacement test leads for the MFT1711?
Replacement test leads are available from Megger authorized dealers or directly from Megger. Use only genuine Megger leads with safety shrouds to maintain safety ratings.
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USER MANUAL MFT1711 Megger
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Product information
Brand : Megger
Model : MFT1711
Category : Measuring equipment