Mastech MS2205 Operation Manual page 10

1.Switch the function knob to A~ position;
2.Pull the trigger to open the clamp, and then clip a
wire which is to be tested; the measured current
value will be automatically shown on LCD
3.Press MODE button to show harmonics percentage
on LCD, and the total harmonic distortion ratio F and
r will be cyclically displayed.
4.Press ▲/▼ button to display value of each
measurement of the harmonic.
If current of the wire being tested is greater than
1000 A (RMS), "OL" symbol will be displayed instead
of current value.
Note:
1.You can select 50/60-Hz FIXED/AUTO frequency
test (AUTO). When input waveform fluctuates,
displayed harmonic values can be kept stable if
50/60-Hz FIXED mode is selected.
2. Under AUTO frequency test mode, FFT calculation
is performed only when base-wave frequency is
between 45 and 65 Hz; harmonic analysis is not
performed when base-wave frequency exceeds
this range.
Test of single-phase circuit
1.Clip the clamp on the test wire of the power supply
or load. If the user needs to measure a certain phase
of the 3-phase circuit, then the clamp should clip on
the wire of the same phase.
2.switch the function switching knob to KW position,
select corresponding input sockets from V1 or V2
terminal and insert the test wire.
15
Yellow
Black
3. After it is correctly connected, you can measure single-
phase power (active power, power factor, apparent
power, passive power, voltage, current, phase angle,
peak value of voltage and current, and frequency):
4. The meter will carry out automatic measurement and
display active power, and voltage/current value of the
load being tested will be displayed on the bottom line
of LCD; press down MODE button, Var value of
passive power will be displayed on LCD; press WATT
button to display apparent power and power factor
(cos Φ); negative power factor signifies that the load
being tested is a load with capacitor characteristics.
5. The maximum measurement range of active power kW
is 600 kW; if this range is exceeded, "OL" symbol will
be displayed beyond this range. If voltage being
tested is greater than 600 V, or current being tested
greater than 1000 A, "OL" symbol will be displayed
on LCD.
1PHASE
1PHASE
3 PHASE
~
HARM
~
HARM
RS232 APS LAG RST USED
READ
FS LEAD
HOLD REC CAL MEMO
°
HzA
PEAK
COSΦ
SINΦ kWVAh
MAX MIN
VA
%THD
kWh kVA
PEAK Hz
MAX MAX
600V~ 600V~
16