Megger MFT1711 User Manual

3
MFT1711, MFT1721, MFT1731 and MFT1741
Multifunction Tester
SPECFICATIONS
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 (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 (not MFT1711)
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
†
Reference conditions apply
††
MFT1711 280 V
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%
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
MFT1711 and MFT1721:
IEC LR6 type AA alkaline
(6 cells - supplied)
MFT1731 and MFT1741:
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**

Megger MFT1711 Specifications

General

Brand	Megger
Model	MFT1711
Category	Test Equipment
Language	English