DMM Tests
70
AXS-200/635
DMM
Capacitance
The
Capacitance
tab allows you to
measure the capacitance of the loop
and capacitance length.
If no contact fault, check the
Fault
Location
test and trace for
characteristic reflection of water.
Also check the
Long. Balance
tab
for <55 dB which could indicate a
split if no other faults detected.
Note:
If the ANSI standard is used, the tab
name
Capacitance
changes to
Opens Meter
.
³
Cable Fill
allows you to select the
type of material the cable can be
filled with.
³
Connection
defines the type of
connection to be tested.
³
Cap bal. thr. (nF)
is the capacitance balance threshold ranging from
0.1 to 20 nF. If the measured capacitive balance in nF is greater than
this threshold,
FAIL
is displayed. Otherwise,
PASS
is displayed.
³
Cap bal. thr. (%)
is the capacitance balance threshold ranging from
50 to 100%. If the measured capacitance balance in percentage is
greater than this threshold,
PASS
is displayed. Otherwise,
FAIL
is
displayed.
³
Low cap value(nF)
defines which of the above thresholds will be used
to determine pass or fail. The range is 0.1 to 500 nF. If the loop
capacitance is less than the
Low cap value
, the threshold in
Cap bal.
thr. (nF)
will be used. Otherwise, the threshold in
Cap bal. thr. (%)
is used.
