18
External voltage display, display in case of blown fuse
• If there is an external voltage present at test tips in R
PE
, R
ISO
or HV
functions prior to a measurement, the "VOLTAGE" sign appears on the
display and start of the measurement is blocked.
• If there is an external voltage applied to test tips after starting the R
PE
10A
measurement or if there is an over-voltage applied in Z
l
or HV
function, fuse F2 may blow. The sign "(FUSE F2) 12.5A" appears on the
LC-Display.
• If there is an external voltage applied to test tips after starting the R
PE
0.2A
measurement, fuse F3 may blow. The sign "(FUSE F3) 1A" or "(FUSE
F2/F3)" appears on the LC-display.
• If an external voltage is applied to test tips during the measurement in
R
ISO
function, wrong measurement values may be displayed.
R
PE
MAN
0.2A
L 2.60
AUT
Im
LIM
C
F:
COMP
FUSE (F2/F3)
R
PE
MAN
0.2A
L 2.60
AUT
Im
LIM
C
F:
COMP
FUSE (F2) 12.5A
R
PE
MAN
0.2A
L 2.60
AUT
Im
LIM
C
F:
COMP
FUSE (F3) 1A
Figure 6: Display in case of blown fuse
Automatic start and save function
The Machinery-Tester MT 204-S has an automatic start and save function for
earth bond resistance and loop impedance measurements. It can be used by
pressing the "F:AUT" menu key.
The measurement starts automatically 1 s after test leads are connected to
the unit under test and stops automatically after measurement result is
achieved. The result is then automatically stored to preset memory address.
• Automatic start and save function enable both-hands measurement
without pressing the
"
START/STOP
"
button. It shall be used especially on
measurement objects that are difficult to access.
• Before using the automatic measurement, memory address (customer,
machine and location), as well as the date and operator’s name must be
set/entered, so that the measurement value can be stored correctly.
