6.
7.
8
9
10
11
Observe the display for true rms current flow. Any
with
phases, indicates the
presence of harmonic
Press
Hz pushbutton measure the frequency of
neutral wire.
Reading
indicates the frequency of the
dominant current flow (in
of harmonic current flow,
reading in a
System).
To freeze the digital display, press the HOLD
pushbutton.
To measure half-cycle peak amperes, press the SOFT
CREST pushbutton twice (PEAK displayed). A
other than 1.414 an
of harmonic
current
. .
To
readings and
view maximum,
and
values, press the MIN MAX pushbutton.
To
RECORD, press the MIN MAX pushbutton for
2
seconds.
6.5 Adjustable Speed Motor Controllers
You
measure input current, output current and frequency
of the adjustable
motor
The output current
frequency is used calculate the rotating
of the motor,
while input current frequency
used
measure the
frequency of the power line. The frequency of the output
current is important
the voltage frequency often
meaningless for the calculations of motor
24
1.
2.
3.
5.
6.
Press
ON
pushbutton turn on this Meter.
Clamp around an input or output
(as
required),
and run motor at desired
Be sure the
jaws
are securely closed, or measurements will not be
accurate.
Observe the display for
rms current
Measure an output
of the motor
and use
Hz mode measure frequency. Nominal motor
is calculated from RPM 120
where
F
is the
quency measured, and
P
is the number of motor
To
readings and view readings, press the MIN
MAX pushbutton.
To
RECORD, press the MIN MAX pushbutton for
2
seconds.
7. Maintenance and Calibration
7.1 Maintenance
Repairs or
should only be performed by qualified
personnel.
25
Summary of Contents for FINEST 135
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