Display Symbols - Megger MFT1700 series User Manual

2.1.1 Display

Display symbols

Symbol Meaning
Test function locked on (also
used to indicate a change is
saved in setup)
Test lead null active
Touch voltage limit (and Earth
test voltage) set to 50 V
(change setup)
Buzzer enabled
RCD test in AUTO mode
Type AC RCD selected
Type A RCD selected
Type S RCD (Type AC)
Type S RCD (Type A)
Type B RCD selected
Fast or Full RAMP test selected
Instrument is running a test
Earth loop noise detected.
Live and netural connections
N<->L
reversed
Reference loop measurement
Loop measurement with Zref
value automatically deducted
Z
Loop maximum measurement
MAX
Symbol Meaning
Warning triangle – instruction to
G
refer to this user guide
Fuse blown
Battery indicator
NiMH
Battery type set to rechargeable
NiMH - Change in setup section
10
Indicates that the ground noise
voltage exceeds the instrument
>100 V
measurement capability (test is
inhibited)
Potential stake (P stake)
Rp (Rs)
resistance exceeds range for
accurate measurement
Current stake (C Stake)
Rc (RH)
resistance exceeds range for
accurate measurement
Ground noise voltage exceeds
range for accurate
V
measurement of resistance
V
VCLAMP error
I
ICLAMP error
Bluetooth enabled
Instrument is too hot, allow to
T
cool
5