Mastech MS2203 User manual

3 PHASE DIGITAL POWER
CLAMP METER
USERS MANUAL

CONTENTS
Safety Precautions - - - - - - - - - - - - - - - - - - - - - - - - - - - 1
Safety Information - - - - - - - - - - - - - - - - - - - - - - - - - - - 1
Safety Symbols - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2
General Description - - - - - - - - - - - - - - - - - - - - - - - - - - 2
Feature - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2
Meter Layout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4
Using The Selector - - - - - - - - - - - - - - - - - - - - - - - - - - 5
Using The Buttons - - - - - - - - - - - - - - - - - - - - - - - - - - 6
Lcd Display -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9
Making Measurements - - - - - - - - - - - - - - - - - - - - - - - 11
Measuring Ac Voltage - - - - - - - - - - - - - - - - - - - - - 11
Measuring Ac Current - - - - - - - - - - - - - - - - - - - - - 13
Measuring Single-Phase Circuit - - - - - - - - - - - - - 15
Measuring Three -Phase Four-Wire Circuit - - - - - - 19
Measuring Three -Phase Three-Wire Circuit - - - - - 24
Saving Measurement - - - - - - - - - - - - - - - - - - - - - - 24
Recalling Memory - - - - - - - - - - - - - - - - - - - - - - - 24
RS232C Date Interface - - - - - - - - - - - - - - - - - - - - 25
Input Voltage And Current - - - - - - - - - - - - - - - - - 26
Backlight Display - - - - - - - - - - - - - - - - - - - - - - - 26
Sketch Of Safety Holding - - - - - - - - - - - - - - - - - - 26
Curve Diagram Of Power - - - - - - - - - - - - - - - - - - 27
Low Voltage Indication - - - - - - - - - - - - - - - - - - - - 28
Replacing Batteries - - - - - - - - - - - - - - - - - - - - - - - - - 28
Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 32
Safety Precautions
· Read these operation instructions thoroughly and completely before

operating your meter. Pay particular attention to WARNING. The
instructions in these warnings must be followed.
· You must be careful when working with voltages above 30V AC. Keep
fingers behind the probe barriers while measuring.
· Never use the meter to measure voltages that might exceed the
maximum allowable input value of any function measurement mode.
· Always inspect your meter and test leads before every use. If any
abnormal conditions exist: broken test leads, cracked cases, LCD not
reading, etc, do not attempt to take any measurement.
· Using the meter with the equipped test leads is only conform to safety
requirements. If you need instead broken test leads, you must replaced
with the same as type and electric specification.
· Never touch a voltage source when the test leads are plugged into a
current jack.
· Do not expose the instrument to direct sunlight, extreme temperature
or moisture.
READ THE INSTRUCTIONS BEFORE
USING THE INSTRUMENT
WARNING
Safety Information
Three-phase digital power clamp meter has been designed according
to IEC1010-1 and IEC1010-2-032 concerning safety requirements for
electrical measuring instruments and handheld clamps with pollution
degree 2, overvoltage category ( 600V CATⅢ).
- 1 –

Safety Symbols
Important safety information, refer to the operating manual
Dangerous voltage may be present.
Earth ground
Double insulation (Protection classⅡ)
Battery
General Description
Three-phase digital power clamp meter is a handheld aptitude meter with
power measurement, it is incorporated current meter and power
measurement instrument. The meter is composed of three channels:
voltage, current, power and single chip Microcontroller. It has powerful
measuring and data processing software, and complete to measure,
calculate and display of the 8 parameters: Voltage, Current, Active Power,
Power Factor, Apparent Power, Reactive Power, Active Energy,
Frequency. It has Stable capability, easy operation. It is especially
suitable for measurement and overhaul of the electric power equipment
and the power-supply circuit on the spot. The structure of the instrument
is pincers, it is very small, very light and portable, make measurement
easy and fast. To the power measurement user, the digital power clamp
meter which is used completely in three-phase system is one of the best
instrument.
Feature
1. For power measurement of 3-phase 3-wire circuit, 3-phase 4-wire
circuit, single-phase circuit.
2. The instrument can complete the true RMS value measurement. If
there is nonsinusoidal AC current input signal, it can accurately
measure the active current.
- 2 -

3. Using autorange switch circuit and modulus transducer which has 8000
count and high resolution, the instrument has high accuracy and easy
operation.
4. Minimum current of Active Energy measurement is 0.5A, it can
measure expending energy per hour of general electrical equipment.
Measurement and display five parameters of power: Active Power,
Apparent Power, Power Factor, Reactive Power, Active Energy.
5. Double display two parameters on each menu and store 28 groups of
measurement parameter.
6. Measure five power parameters of each phase and total power value in
three-phase measurement mode respectively.
7. Multifunctional button control, there are double scales analogue bar
graph to display fluctuation of voltage and current.
8. With PC RS232C interface and special WINDOWS data graphics
software.
9. Display measurement time and select tested voltage signal be power
supply for the clamp at one time in Active Energy measurement mode,
so the instrument can measure for long .
10. The instrument is a portable clamp meter. It is very light and
convenient to carrying .
- 3 -

Meter Layout
( Figure 1 )
1. Clamp Jaws Ф50mm
2. HOLD Button
Holds the display reading and “ " symbol is shown in the LCD
display, press this button again, the meter return to normal
measurement mode.
3. Function Selector Rotary Switch
Rotate the selector to any measurement function.
4. Function Selector Buttons
To select the measurement object.
– 4 –
DC
6
min
kVA
kVAr
kWh
COM
SAVE
60204010 30 80
MR
MEM
PF
MIN
MAX
RS232
CAL
AC
020
Time
FREQ
h
V3
V1 V2
MAX MIN
4
10040
Hz
5
7
HOLD
CLEAR
P
OFF
MS2203
MR
EX-
DIGI TAL POWER CLAMP
OFF
1
RS232
TIME
kWh
W
Ture RMS
AUTO RANGE
3
kW / PF
V / Hz
2
A
kVAr
kVA
W
3W 321 P
2
3
600kW
MAX
1000A
1
II
600V
CAT.I
MAX
8
600V
MAX
RS232
~
3OPTICALINTERFACE

5. Input terminal
V1: The input terminal for the first phase, using the yellow test lead
to connect.
V2: The input terminal for the second phase, using the green test
lead to connect.
V3: The input terminal for the third phase, using the red test lead to
connect.
COM: Common terminal, the earth input terminal for all measure-
-ment modes, using the black test lead to connect.
6. LCD Display
4 digits display, 7 segment LCD to display function mode, measured
value and symbols.
7. Trigger
Press the lever to open the transformer. When the lever is released,
the jaws will close again.
8. RS232C Data Interface
Your clamp meter can use a serial interface cable to communicate
with a computer. Refer to Figure 18 for complete instructions.
Using the Selector
Turn the meter on by rotating the selector to any function as following .
( Table 1. Introducing The Selector）
ITEM DESCRIPTION
POWER OFF. Turn the meter offOFF
EX- P EXTERNAL POWER SUPPLY. No use battery, select tested
voltage signal be power supply for Active Energy measure-
-ment for long at one time.
RECALL DATA. Recall saved data in the meter memory.MR
TOTAL POWER. For display total power value of three phase∑W
– 5 –

( Table 1. Introducing The Selector )
ITEM DESCRIPTION
THIRD MEASUREMENT CHANNEL. For V3 input terminal
measurement
Φ3
SECOND MEASUREMENT CHANNEL. For V2 input terminal
measurement
Φ2
FIRST MEASUREMENT CHANNEL. For V1 input terminal
measurement
Φ1
Using the buttons
( Table 2. Function Button)
ITEM DESCRIPTION
1 kW / PF Active Power, Power Factor Measurement Button.
Apparent Power, Reactive Power Measurement
Button.
2
3 kWh
TIME Active Energy, Time Measurement Button
4 Power Summation Button
5 V / Hz Voltage, Frequency Measurement Button
6 ACurrent Measurement Button
7 RS232 Data Transmit Button
8 CLEAR Clear Memory Button
9 Backlight Button
10
kVAr
kVA
MAX
Maximum Value Button/ Previous Record Button
11
MIN
Minimum Value Button/ Next Record Button
12 SAVE Data Save Button
– 6 –

1. kW / PF Active Power, Power Factor Measurement Button
Press kW / PF button to measure Active Power and Power Factor in
measurement mode. Then the LCD shows Active Power reading in
the primary display and Power Factor reading in the secondary
display.
2. kVAr
kVA Apparent power, Reactive Power measurement button
Press kVAr
kVA button to measure Apparent Power and Reactive
Power in measurement mode. Then the LCD shows Apparent Power
reading in the primary display and Reactive Power reading in the
secondary display.
3．kWh
TIME Active Energy, Time Measurement Button
Press kWh
TIME button to measure Active Energy in measurement
mode. Then the LCD shows Active Energy reading in the primary
display and measurement time of the Active Energy in the secondary
display.
4．Power Summation Button
Press button to sum up the measured value of current one
phase in three phase measurement mode; then measure the second
phase and press the button to sum up again; press the
button for the third phase after you getting the measured
value of the third phase on the display. So the meter will calculate the
sum in this three phase system automatically, you will rotate the
selector to ∑W at one time, then the display shows the total power
value.
5．oltage Measurement ButtonV
Press button to measure voltage of the circuit and display
the measured value in the LCD display.
– 7 –
V / Hz
V / Hz

6. A Current Measurement Button
Press A button to measure current of the circuit and display
the measurement value in the LCD display.
7. RS232 Data Transmit Button
Press RS232 button to transmit measured data to a computer by
special interface cable, you can record current measured value and
print reports and data trend curve drawing.
Before press the RS232 button to transmittal measured data, you
must connect RS232C interface cable to the clamp meter and a
computer, the communication function is working.
8. CLEAR Clear Memory Button
Press CLEAR button for three seconds to erase all measured data
in the meter memory in the measurement mode.
9. Backlight Button
Press button to turn the backlight on or off. When the back-
-light turned on over five seconds, it will turn off automatically.
10. MAX Maximum Value Measurement Button / Previous Record
Button
Press MAX button to measure maximum value in measurement
mode. The display shows current maximum value in the secondary
display.
When you turn the selector to MR, press MAX button to recall
previous memory location and display the data on the LCD. Once
pressing this button, the clamp meter recalls a memory location
previous current location.
11. MIN Minimum Value Measurement Button / Next Record Button
Press MIN button to measure minimum value in measurement
mode, the display shows current minimum value in the secondary
display.
– 8 –