Display; Display Symbols - Megger MFT1800 Series User Manual

Introduction

2.1.2. Display

2.1.3. Display symbols

Symbol Description
Test function locked on (also used to
indicate a change is saved in setup)
z
Test lead null active
Touch voltage limit (and Earth test voltage)
U L = 50V
set to 50 V (change setup)
Buzzer enabled
AUTO
RCD test in AUTO mode
Type AC RCD selected
Type A RCD selected
S
Type S RCD (Type AC)
S
Type S RCD (Type A)
Type B RCD selected
Fast or Full RAMP test selected
TEST
Instrument is running a test
Earth loop noise detected.
Zref
Reference loop measurement
ZMAX Loop maximum measurement
12 MFT1800 series
NOTE : Some features detailed within this user
guide are model dependent.
Not all features appear on all models
Symbol Description
Warning triangle – instruction to refer to
G
this user guide
f
Fuse blown
Battery indicator
Battery type set to rechargeable NiMH -
NiMH
Change in setup section 10
Indicates that the ground noise voltage
>100 V exceeds the instrument 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
V
accurate measurement of resistance
MVC1010 error
V
MCC1010 error
I
Bluetooth enabled
®
T
Instrument is too hot, allow to cool
N<->L
Live and neutral connections reversed
Loop measurement with Zref value
R1+R2
automatically deducted
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