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Megger MFT1741+ Multifunction Tester
Includes: Printed quick start guide, Full user guide on CD, Calibration certificate, Switched probe SP5, Neck strap, 3 Wire lead set with prods and clips, Mains plug test lead (BS1363), AC battery charger, Large soft pouch.
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The Megger MFT1741+ multifunction tester is an instrument designed for testing low voltage electrical installations and especially in locations that suffer from high electrical noise. It provides all the tests required to complete the necessary electrical certification for industrial, commercial and domestic fixed wiring installations.
The MFT1741+ offers a wide range of test functions, designed for all electrical installation testing and verification of low voltage building wiring and distribution testing scenarios. The MFT1741+ is IEC 61010 CAT IV 300 V rated for safe connection anywhere within the LV network on single and 3 phase systems.
New Loop Impedance testing technology
Prevents any influence the RCD may present to the total loop impedance value.
Faster non-trip loop testing down to 8 seconds.
This technique also allows testing of loop impedance through 10mA type ac and Type A RCDs.
New “Confidence meter*” measurement analysis (Patent pending)
Overlaying the new non-trip loop impedance measurement is the new Megger “Confidence meter”. As loop impedance values can be dramatically affected by circuit noise, the Confidence Meter displays the degree of confidence in the accuracy of the measured loop impedance. Using the digital ARC to indicate the analytical process, the measurement is continually monitored and adjusted when circuit noise is present, resulting in a dramatically improved and repeatable test result.
New electric vehicle charge point testing
The MFT1741+ includes an automatic EV Charge Point RCD test sequence, including the 6 mA dc test*. Test results can be reviewed or saved to memory and reviewed later.
FEATURES
Testing of Electric Vehicle Charge Points*.
Enhanced non-trip loop impedance measurement technology.
“Confidence meter” measurement analysis (patent pending).
Full single and 3 phase compliant installation testing.
10 mA to 1 A single and 3 phase RCD testing.
Earth testing and stake-less testing for electrode resistance measurement*.
Simple colour-coded test selection.
Ambidextrous operation.
Internal memory and Bluetooth® communications.
EN61010 CAT IV safety rating and tough IP54 case.
Insulation ranges | |||
100 V | |||
250 V, 500 V | |||
1000 V | |||
Test voltage display | |||
Adjustable buzzer threshold | |||
Continuity and resistance ranges | |||
200 mA test | |||
15 mA test | |||
Adjustable buzzer threshold | |||
Loop testing | |||
2 and 3 wire non-tripping L-PE 50 V ~ 280 V | |||
2 wire Hi current L-N 50 V ~ 280 V | |||
2 wire phase to phase L-L 50 V ~ 500 V | |||
PSCC and PFC (20 kA max.) | |||
Max. Zs display | |||
R1 + R2 value | |||
Touch voltage display on faulty earth | |||
Earth electrode test | |||
2 and 3 pole * | |||
3 pole ART and Stakeless method * | |||
RCD tests | |||
1/2, 1, 5 x I and ramp RCD test | |||
Auto RCD test | |||
Type AC, A and S RCDs | |||
Type B (pure DC) RCDs | |||
Programmable RCD | |||
3-phase RCD (no earth) | |||
30, 100, 300 and 500 mA RCD | |||
10 mA and 1000 mA RCD | |||
Other features | |||
Supply measurement | |||
True RMS | |||
Phase rotation | |||
Hard moulded case | |||
Confidence meter noise reduction | |||
New hardware loop test platform | |||
* requires optional accessory |
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. |
|
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. | |
IP rating | IP54. | |
Calibration temperature | +20 °C. | |
Temperature coefficient | <0,1% per °C For test environments see service data. | |
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). | |
Megger MFT1741+ warranty | Three-years. |
COMPONENT |
DESCRIPTION | PART No. | ||
Fused Lead Set | Fused 10 A test lead set (red/blue/green) with prods and clips. | 1001-975 | ||
30m Ext. Lead | XTL30 Extension Test Lead 30 m. | 2007-998 | ||
50m Ext. Lead | XTL50 Extension Test Lead 50 m. | 2207-997 | ||
Car Charger | Cigar lighter adapter for battery charging. | 6280-332 | ||
SP5 Probe | Switched Probe SP5 (silicone). | 1001-687 | ||
Clamp | MCC1010 Current measuring clamp. | 1010-516 | ||
Electrode kit | Electrode kit. | 1001-810 | ||
ETK30 | 3 Pole Earth Test Kit. | 1010-176 |