Axio MET AX-3550 User manual

Digital clamp meter
AX-3550
Instruction Manual

1. Safety Information
To avoid possible electric shock or personal injury, and to avoid possible damage to the eter or to
the equipment under test, adhere to the following rules:
1. Before using the eter inspect the case. Do not use the eter if it is damaged or the case
(or part of the case) is removed. Look for cracks or missing plastic. Pay attention to the
insulation around the connectors.
2. Inspect the test leads for damaged insulation or exposed metal. Replace damaged test
leads with identical model number or electrical specifications before using the eter.
3. Do not apply more that the rated voltage, as marked on the eter.
4. When measurement has been completed, disconnect the connection between the test
leads and the circuit under test, remove the esting leads away from the input terminals of
the eter and turn the eter power off.
5. Do not carry out the measurement when the eter’s back case and / or battery door is
opened to avoid electric shock.
6. When the eter working at an effective voltage over 30V in AC, special care should be
taken.
7. Use the proper terminals and functionyou're your measurements.
8. Do not use or store the eter in an environment of high temperature, humidity, explosive,
inflammable and strong magnetic field. The performance of the eter may deteriorate
after dampened.
9. Do not use the eter if the surface of it is wet or the user’s hands are wet.
10. When using the test leads, keep your fingers behind the finger guards

2. Function
Button
Oper
ation Performed
HOLD
Press HOLD to enter the Hold mode any mode, appears and the eter beeps.
Press HOLD again to exit the Hold mode to return to measurement mode, the eter
beeps and, disappears.
Press the backlight button when needed. Auto shut
-
down
backlight after lighting
20secs.Press the button again, turn the backlight off manually
∑
At Active power (main display) + Phase angle (secondary display) mode, press
∑
once
button to sum up the current phase of 3 phase measurement result. Then carry out
second phase power measurement.
Press ∑ and hold for over 1 second to sum up the phase power measurement result
which had been selected.
if you didn`t select any phase of 3 phase, ∑ is invaild.
SAVE
Press once to store single reading, and the eter beeps
.The index number shown on
the left secondary display keep on increasing. The maximum number of data store is
99, when it achieves 99, the eter shows .
SEL
Press
SEL
button to step through first phase, second phase, third phase and sum of
watts.
Press SEL and hold for over 2 second to enter 3P3W mode.
MA MIN
Press to start recording of maxinmum it valid at voltage, current, active power and
apparent power ranges only.
CLEAR
At active energy range, press
CLEAR
and hold for over 1 second to reset time
the
zero, then restart the timing.
At all other ranges, press CLEAR and hold for over 1 second to clear stored

readings.
MR Press once to enter emory Record mode, appears and the eter beeps.
▼/▼
If the eter steps through sum of power press
▼/▼
but
ton to
switch display of active
power (main display) , sum of reactive power (secondary display) , sum of power
factor (main display) and sum of apparent power.
In the R mode, press ▼/▼ to select recoded data.
USB
easurement data will be sent to the PC
2.1. Additional inforamtion
1. Turn the rotary switch deasil to make the position away from the OFF position. Hearing a
beep sound indicates the meter is turned on. The LCD displays all symbols firstly and then
return to the normal mode. If the symbol is displayed, please changed the battery.
2. After auto-shut-off, there are some parts of the circuit of the meter which is still work. If
no measurement needed in a longer time, you’d better turn the rotary switch back to the
OFF position.
3. Press the backlight button when needed. Auto shut-down backlight after lighting
18secs.Press the button again, turn the backlight off manually
3. Display symbols
Figure 1

USB
Data Output is in progress
First phase symbol
Second phase symbol
Third phase symbol
h
Uni
t for hour
mm
Unit for minute
HZ
PG
KVAr
Hz: Hertz.The unit of frequency.
PG: The unit of phase angle
KVAr. The unit of reactive power
∑
W
Watt: Sum of Watt
The battery is low.
Warning: To avoid false readings, which could lead to possible
electric shock or personal injury, replace the battery as soon as the
battery indicator appears.
S
Unit for second
AX/ IN
axinum and inimum reading
Analogue Bar Graph
Overloading
Ruler
CLEAR
Indicator for clear the st
ored reading

Negative symbol
High voltage symbol
AC
Indicator for AC voltage or current
R
Indicator for recall the stored reading
Hz
Frequency symbol
E
Indicator for data store
FUL
Indicator for data stored is full
Data hold is active
4. Specifications
AC Voltage (True RMS)
Range Resolution Accuracy
Allowable Maximum
overload protection
voltage
Input
Impedance Frequency Range
100V
0.1V ±(1.2%+5) 750 R S 10 50Hz~200Hz 400V
750V
Frequency
Range
Resolution
Accuracy

50Hz~200
Hz
1Hz
±(0.5%+5)
AC Current (True RMS)
Range Resolution Accuracy
Allowable Maximum
overload protection
current
Frequency Range
40A
0.1A
±(2%+5) 1000A R S 50Hz~60Hz
100A
400A
1000A 1A
Active Power ( W=V x A x COSθ )
Current / Voltage
Voltages Range
100V 400V 750V
Current Range
40A 4.00KW 16.00KW 30.00KW
100A 10.00KW 40.00KW 75.00KW

400A 40.00KW 160.0KW 300.0KW
1000A 100.0KW 400.0KW 750.0KW
Accuracy ±(3%+5)
Resolution <1000KW: 0.01KW 100kW: 0.1KW
Apparent Power (VA = V x A)
Current / Voltage
Voltages Range
100V
400V
750V
Current Range
40A
4.00KVA
16.00KVA
30.00KVA
100A
10.00KVA
40.00KVA
75.00KVA
400A
40.00KVA
160.0KVA
300.0KVA
1000A
100.0KVA
400.0KVA
750.0KVA
Accuracy
±(3%+5)
Resolution
<1000KVA: 0.01KVA 100kW
: 0.1KVA
Reactive Power (Var = V x A x SINθ )
Current / Voltage Voltages Range

100V 400V 750V
Current Range
40A 4.00KVAr 16.00KVAr 30.00KVAr
100A 10.00KVAr 40.00KVA 75.00KVAr
400A 40.00KVAr 160.0KVAr 300.0KVAr
1000A 100.0KVAr 400.0KVAr 750.0KVAr
Accuracy ±(3%+5)
Resolution <1000KVAr: 0.01KVAr 100kW: 0.1KVAr
Power Factor (PF = W / VA)
Range Accuracy Resolution Measuring Condition
0.3~1
(capacitive or
inductive)
±0.022 0.001
The minimum
measuring current 10A
The minimum
measuring voltage 45V
0.3~1
(capacitive or
inductive)
For reference only
easuring current less
than 10A OR
easuring voltage less
than 45V
Active Energy (kWh)
Range Accuracy Resolution
1~9999kWh ±(3%+2) 0.001kWh

Phase Angle (PG=acos (PF))
Range Accuracy Resolution Measuring Condition
0
O
~90
O
(capacitive or inductive)
±2
O
1
O
The minimum measuring current
10A
The minimum measuring voltage
45V
0
O
~90
O
(capacitive or inductive)
For reference only
easuring current less than 10A
OR
easuring voltage less than 45V
Remarks:
Allowable maximum overload protection voltage: 750V R S
Allowable maximum overload protection current: 1000A R S
Basic Functions
Range
Best Accuracy
AC Voltage
100V/400V/750V
±(1.2%+5digits)
AC Current
40A/100A/400A/1000A
±(2%+5 digits)
Active Power
0.01kW
-
750kW
±(3%+5 digits)
Apparent Power
0.01kVA
-
750kVA
±(3%+5 digits)
Reactive Power
0.01kVAr
-
750kVAr
±(4%+5 digits)

Power Factor
0.3~1(Capacitive or
Inductive ) ±(0.02+2 digits)
Phase Angle
0
O
~90
O
±2
O
Frequency
50Hz
-
200Hz
√
Active Energy
0.001~9
999 kWh
±(3%+2 digits)
Temperature
-
50
O
C~1300
O
C
-58
O
F~2372
O
F
Special Functions
Auto Ranging
√
Single
-
phase 2
-
wire
√
Balance 3
-
phase 3
-
wire √
3
-
phase 4
-
wire
√
True R S
AC Voltage or Curren
√
Data Logging
99
√
Data Recall
√
ax/ in ode
√
Data Hold
√
USB
√
Display Backlight
√
Full Icon Display
√

Sleep ode
√
Low Battery Display
√
Input Impedance for
AC Voltage
easurement
Around 10 W √
ax. Display
9999
√
Analogue Bar Graph
√
5. Battery replacement
1. Replace the battery as soon as the battery indicator appears. With a low battery,
the eter might produce false readings that can lead to electric shock and personal
injury.
2. When opening the battery door, must make sure the eter is power off.
3. When servicing the eter, use only the same model number or identical electrical
specifications replacement parts.
4. Battery type: 9V battery.