Extech Instruments MA610 User manual

USER MANUAL
600A AC Clamp Meter + NCV
Model MA610
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
2MA610-en-GB_V1.0 12/16
Introduction
Thank you for selecting the Extech MA610 Clamp Meter. This meter measures AC Current,
AC/DC Voltage, Resistance, Capacitance, Frequency, Diode Test, Duty Cycle, Continuity and Non-
Contact Voltage detection. This device is shipped fully tested and calibrated and, with proper
use, will provide years of reliable service.
Features
Large backlit LED display
30mm (1.2") jaw size fits conductors up to 500MCM
Relative and Zero mode functionality
Auto Power OFF (APO)
Non-Contact Voltage Detector
Visual and audible continuity measurement alert
Low battery indicator
CAT III 600V
Safety
To ensure the safe operation and service of the meter, follow these instructions closely. Failure to
observe warnings can result in severe injury.
WARNINGS
WARNINGS identify hazardous conditions and actions that could cause BODILY HARM or DEATH.
When handling test leads or probes, keep hands and fingers behind the finger guards at all times.
Remove test leads from the meter before opening the battery compartment or meter housing.
Use the meter only as specified in this User Manual or accompanying Quick Start to avoid compromising
the protections provided by the meter.
Be sure to use the proper terminals, switch positions, and ranges when taking measurements.
Verify the meter’s operation by measuring a known voltage. Have the meter serviced if the meter
responds unusually or if there are questions regarding the meter’s functional integrity.
Do not apply more than the rated voltage, as marked on the meter, between terminals or between any
terminal and earth ground.
Use caution working with voltages above 30 VAC RMS, 42 VAC peak, or 60 VDC. These voltages pose a
shock hazard.
To avoid misleading readings that could lead to electric shock and injury, replace the batteries as soon as
the low battery indicator is displayed.
Disconnect power to the circuit under test and discharge all high-voltage capacitors before testing
resistance, continuity, diodes, or capacitance.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
3MA610-en-GB_V1.0 12/16
Do not use the meter in the presence of explosive gas or vapor.
To reduce risk of fire or electric shock, do not use the meter if it is wet and do not expose the meter to
moisture.
Individual protective equipment should be used if HAZARDOUS LIVE parts in the installation where
measurements are to be carried out could be accessible.
CAUTIONS
CAUTIONS identify conditions and actions that could cause DAMAGE to the meter or equipment
under test. Do not expose the meter to extremes in temperature or high humidity.
Disconnect the test leads from the test points before changing the position of the function (rotary)
switch.
Do not expose the meter to extremes in temperature or to high humidity.
Never set the meter to the resistance, diode, capacitance, or amp functions when measuring the
voltage of a power supply circuit; this could result in meter damage and damage to the equipment
under test.
Safety Symbols
This symbol, adjacent to another symbol, indicates the user must refer to
the manual for further information.
Risk of electrical shock
Equipment protected by double or reinforced insulation
Diode symbol
Capacitance
Battery symbol
Conforms to EU directives
Complies with USA and Canada requirements
AC measurement
DC measurement
Earth ground
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
4MA610-en-GB_V1.0 12/16
PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY I
Equipment of OVERVOLT AGE CATEGORY I is equipment for connection to circuits in which measures are
taken to limit the transient over-voltages to an appropriate low level.
Note –Examples include protected electronic circuits.
OVERVOLTAGE CATEGORY II
Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be supplied from the fixed
installation.
Note –Examples include household, office, and laboratory appliances.
OVERVOLTAGE CATEGORY III
Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations.
Note –Examples include switches in the fixed installation and some equipment for industrial use with
permanent connection to the fixed installation.
OVERVOLTAGE CATEGORY IV
Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation.
Note –Examples include electricity meters and primary over-current protection equipment
Description
Meter Description
1. Transformer current jaws
2. Jaw opening trigger
3. M (Mode) button
4. Backlit LCD
5. Control buttons (see descriptions below)
6. COM negative input terminal
7. Positive input terminal
8. Function selector
9. NCV alert lamp
10. Backlight button
11. NCV sensor
Note: Battery compartment is located on back of meter
Fig. 1 –Meter Description
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
5MA610-en-GB_V1.0 12/16
Display Description
Relative mode icon
Units of Frequency
AC
Alternating Current
Units of Voltage
DC
Direct Current
Units of Capacitance
Negative readings
NCV
Non-contact AC Voltage
Detect
Diode mode
Automatic range mode
Continuity mode
Low Battery icon
Display Hold
Duty Cycle
Units of resistance
Measurement overload
Control Buttons
Mode button: Short press to step through the mode options for the selected
measurement function
HOLD button: Short press to freeze/unfreeze reading
Backlight button: Short press to turn backlight ON or OFF. Note that the backlight
button is on the upper right side of the meter.
For AC/DC voltage, AC current and Resistance modes: Short press to store the
displayed reading as a reference value. Subsequent measurements will be displayed
as ‘measurement minus reference value’. Short press to exit.
For Capacitance mode, short press to zero the display; the LCD will show the delta
symbol. Short press to exit this mode.
Short press to step through frequency (Hz) and duty cycle (%) measurements for the
Voltage and Hz switch positions.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
6MA610-en-GB_V1.0 12/16
Operation
CAUTION: Read and understand all of the Safety statements listed in the safety section
of this manual prior to use.
Powering the Meter
1. Move the function switch to any position to power the meter. Check the batteries if the unit
fails to power ON.
2. Move the function switch to the OFF position to remove power to the meter.
3. The meter has an Auto Power OFF feature (APO) where the meter switches OFF after 30
minutes of inactivity. Press any button to recover from an APO condition.
Low battery indication
When the icon appears in the display, the battery should be replaced. Refer to the battery
replacement procedure in the maintenance section.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
7MA610-en-GB_V1.0 12/16
AC Current Measurements
WARNING: Do not handle the meter above the finger/hand guard barrier.
CAUTION: Observe CAT III 600V with respect to Earth Ground for the Jaw.
1. Rotate the function switch to the desired AC Current position (4A, 40A, or 600A).
Start with the highest range setting (600A) and step down to lower ranges as needed,
especially for signals that are of an unknown range.
2. The Aand the AC symbols will appear on the display indicating AC Amperes (Amps).
3. Press the jaw trigger to open the clamp jaw.
4. Position the clamp around only one conductor. See Fig. 2 for correct and incorrect clamp
technique.
5. Read the current in the display. The display will indicate the proper decimal point and
value.
NOTES:
To ensure maximum accuracy, place the conductor at the center of the clamp head, otherwise
additional error (± 1.0%) may apply.
Fig. 2 –Correct and Incorrect ACA Clamping
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
8MA610-en-GB_V1.0 12/16
AC and DC Voltage Measurements
WARNING: Do not apply > 600VAC/DC between the meter terminals and ground.
CAUTION: When connecting the test leads to the circuit or device under test, connect
the black lead before the red lead; when removing the test leads, remove the red lead before
the black lead.
1. Set the function select switch to the Voltage position .
2. Use the M(Mode) button to select AC or DC Voltage.
3. Insert the black test lead banana plug into the negative (COM) jack and the red test lead
banana plug into the red (V) jack. See Fig. 3.
4. Touch the test probe tips to the circuit or part under test.
5. Read the voltage in the LCD. The display will indicate the proper decimal point and value.
6. Relative (REL) mode can be used to set a reference reading from which subsequent
readings will be offset (reference reading –actual reading = displayed reading). Short
press the REL button to store the displayed reading as a reference to which subsequent
measurements will be compared. Short press the REL button to exit the relative mode.
7. The meter can display the frequency (Hz) or duty cycle (%) of the measured voltage.
Short press the Hz % button to step through frequency and duty cycle readings.
8. Short press the Hbutton to freeze/unfreeze the displayed reading.
NOTES: The LCD displays OL when the input exceeds 1000V.
Fig. 3 –AC/DC Voltage Measurements
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
9MA610-en-GB_V1.0 12/16
Resistance Measurements
WARNING: Please remove power to the circuit under test and discharge all capacitors
before taking resistance or continuity measurements. The meter will display OL if the circuit
under test is an open circuit or if the measurement exceeds the maximum range of the meter.
Do not input a voltage >30V AC or DC.
1. Turn the function switch to the Resistance Ωposition.
2. Use the M(mode) button to select the ohm Ωdisplay symbol.
3. Insert the black test lead banana plug into the negative (COM) jack. Insert the red test
lead banana plug into the red (Ω) jack. See Fig. 4.
4. Touch the test probe tips across the circuit or part under test. It is best to disconnect one
side of the part under test so that the rest of the circuit will not interfere with the
resistance reading.
5. Read the resistance in the display. The display will indicate the proper decimal point and
value.
6. Relative (REL) mode can be used to set a reference reading from which subsequent
readings will be offset (reference reading –actual reading = displayed reading). Short
press the REL button to store the displayed reading. The Relative icon (triangle) appears
when the Relative mode is active. Short press the REL button to exit the relative mode.
NOTE: When measuring resistance >1MΩ the meter may require several seconds to obtain a
stable reading.
Fig. 4–Resistance Measurements
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
10 MA610-en-GB_V1.0 12/16
Continuity Measurements
WARNING: Please remove power to the circuit under test and discharge all capacitors
before taking resistance or continuity measurements. The meter will display OL if the circuit
under test is an open circuit or if the measurement exceeds the maximum range of the meter.
Do not input a voltage >30V AC or DC.
1. Turn the function switch to the Continuity position.
2. Use the M(mode) button to select the continuity display icon.
3. Insert the black test lead banana plug into the negative (COM) jack. Insert the red test
lead banana plug into the red (Ω) jack. See Fig. 5.
4. Touch the test probe tips across the circuit or wire.
5. If the resistance is < 10Ω, the meter will beep. If the resistance is > 70Ω, the meter will
not beep. If the resistance is between 10 and 70Ω, the meter will stop beeping at an
unspecified point.
Fig. 5 –Continuity Measurements
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
11 MA610-en-GB_V1.0 12/16
Frequency Measurements
WARNING: Do not input voltages > 30Vrms when measuring frequency.
Turn the function switch to the Hz position.
1. Insert the black test lead banana plug into the negative (COM) jack. Insert the red test
lead banana plug into the red jack. See Fig. 6.
2. Touch the test probe tips across the circuit or component.
3. Read the Frequency measurement on the meter display.
4. Use the Hz%button to view Duty Cycle %.
Fig. 6 –Frequency Measurements
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
12 MA610-en-GB_V1.0 12/16
Capacitance Measurements
WARNING: Please remove power to the circuit under test and discharge all capacitors
before taking capacitance measurements.
1. Turn the function switch to the position.
2. Use the M(mode) button to select the capacitor function if necessary.
3. Insert the black test lead banana plug into the negative (COM) jack. Insert the red test
lead banana plug into the red jack. See Fig. 7.
4. Touch the test probe tips across the circuit or component.
5. Read the Capacitance measurement on the meter display. For readings > 400µF, several
minutes may be required to obtain a stable reading.
6. Relative (REL) mode can be used to zero the display before taking a measurement. Short
press the REL button to null the display, the relative symbol (triangle) will appear. Short
press the REL button again to exit the REL mode.
Fig. 7 –Capacitance Measurements
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
13 MA610-en-GB_V1.0 12/16
Diode Test
WARNING: Please remove power to the circuit under test and discharge all capacitors
before taking diode measurements. Do not input voltages > 30V DC or AC to the meter.
1. Turn the function switch to the position.
2. Use the Mbutton to select the diode icon .
3. Insert the black test lead banana plug into the negative (COM)jack and the red test lead
banana plug into the red (V) jack. See Fig. 8.
4. Touch the test probes to the diode under test, in both polarity directions one at a time.
5. Forward voltage will indicate 0.5 to 0.8V.
6. Reverse voltage will indicate “OL”.
7. Shorted devices will indicate a reading close to ‘0’ ohms in both directions.
8. An open device will indicate ‘OL’in both directions.
Fig. 8 –Diode Testing
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
14 MA610-en-GB_V1.0 12/16
Non-Contact Voltage-Detector (NCV)
The area at the top of the clamp jaws is used for sensing AC voltage.
When the electrical field is > 100V and the distance is < 10mm from the tip of the meter’s clamp
jaw, the beeper will sound and the red LED lamp will light.
The NCV lamp flashes at the same rate as the beeper. The higher the field strength, the faster
the beep rate and lamp flashing.
When the sensed field is at highest levels, the meter’s NCV lamp and beeper rate will become
one continuous light and tone.
If the meter does not react as described above to an AC voltage, there is still the possibility that
a voltage is present. Please use caution.
1. Move the function switch to the NCV position.
2. In this mode, the meter will display ‘OL’and ‘NCV’.
3. Place the meter near a source of electrical energy. The tip of the clamp offers the highest
sensitivity.
4. Note the beeping and the NCV lamp activation when an AC Voltage is sensed.
Fig. 9 –Non-Contact Voltage Detection
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
15 MA610-en-GB_V1.0 12/16
Maintenance
WARNING: To avoid electrical shock, disconnect the meter from any circuit and turn OFF
the meter before opening the case. Do not operate with an open case.
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or solvents.
If the meter is not to be used for 60 days or more, remove the batteries and store them separately.
Battery Replacement
1. Remove the Phillips head screw at the back (near center) of the meter. See Fig. 10.
2. Open the battery compartment.
3. Replace the three (3) 1.5V ‘AAA’ batteries observing correct polarity.
4. Re-assemble the meter before use.
5. Safety: Please dispose of batteries responsibly; never dispose of batteries in a fire, batteries
may explode or leak; never mix battery types, install new batteries of the same type.
Fig. 10 - BATTERY REPLACEMENT
Never dispose of used batteries or rechargeable batteries in household waste.
As consumers, users are legally required to take used batteries to appropriate collection sites,
the retail store where the batteries were purchased, or wherever batteries are sold.
Disposal: Do not dispose of this instrument in household waste. The user is obligated to take end-of-life
devices to a designated collection point for the disposal of electrical and electronic equipment.
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or
solvents.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
16 MA610-en-GB_V1.0 12/16
Specifications
Electrical Specifications
Accuracy is given as ± (% of reading + least significant digits) at 23C ±5C with relative humidity ≤ 75%.
Accuracy is specified for a period of one year after calibration.
Temperature Coefficient is 0.1 x specified accuracy / C, < 18C (64.5F), > 28C (82.4F)
Function
Range
Resolution
Accuracy (reading)
‘OL’ Protection
AC Current
4.000 A
0.001 A
± (2.5% + 30 digits)
600A
40.00 A
0.01 A
± (2.5% + 5 digits)
600 A
1 A
± (2.0% + 9 digits)
AC Voltage
4.000V
0.001V
± (1.2% + 5 digits)
600V AC/DC
40.00V
0.01V
400.0V
0.1V
600V
1V
± (1.5% + 5 digits)
DC Voltage
400.0mV
0.1mV
± (1.0% + 8 digits)
600V AC/DC
4.000V
0.001V
± (0.8% + 1 digit)
40.00V
0.01V
± (0.8% + 3 digits)
400.0V
0.1V
600V
1V
± (1.0% + 3 digits)
Input Impedance: ≥10MΩ
Resistance
400.0 Ω
0.1 Ω
± (1.2% + 2 digits)
600V AC/DC
4.000k Ω
0.001k Ω
± (1.0% + 2 digits)
40.00k Ω
0.01k Ω
400.0k Ω
0.1k Ω
4.000M Ω
0.001M Ω
± (1.2% + 3 digits)
40.00M Ω
0.01M Ω
± (2.0% + 5 digits)
Open Circuit Voltage: Approx. 1.5V
Continuity
400.0 Ω
0.1 Ω
± (1.2% + 2 digits)
600V AC/DC
Continuity: Beeper ON < 10Ω. Beeper OFF >70Ω. Beeper unspecified >10Ω and <70Ω
Diode
4.000V
0.001V
Silicon PN junction
0.5 to 0.8V (typically)
600V AC/DC
Open Circuit Voltage: Approx. 1.5V
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
17 MA610-en-GB_V1.0 12/16
Capacitance
50.00nF
0.01 nF
± (4.0% + 25 digits)
600V AC/DC
500.0nF
0.1 nF
± (4.0% + 5 digits)
5.000 µF
0.001 µF
50.00 µF
0.01 µF
100.0 µF
0.1 µF
Frequency (Hz)
10Hz~1MHz
0.01Hz~1kHz
± (0.1% + 4 digits)
600V AC/DC
Sensitivity: (10Hz~1MHz): 200mVrms ≤input amplitude ≤20Vrms
Duty Cycle (%)
0.1 ~ 99.9%
0.1%
± (2.5%)
600V AC/DC
Input amplitude: 500mVrms ≤ Input amplitude ≤ 20Vrms;
Duty Cycle applies to ≤10kHz Square Wave
Specified accuracy range: 10% ~ 90% range
Non-Contact
Voltage
Detector (NCV)
≥100Vrms; ≤10mm (0.4”) beeper sounds, and NCV lamp lights
The tip of the meter offers optimum sensitivity
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

EXTECH INSTRUMENTS
18 MA610-en-GB_V1.0 12/16
General Specifications
Display LCD 4000-count multi-function backlit LCD
Polarity Automatic display of positive and negative polarity
Over-range indication “OL” or “-OL” is displayed
Conversion rate 3 updates per second
Clamp Sensor Type Coil induction
Test position error Additional error of ±1.0% of reading applies when the conductor
under test is not positioned at the center of the clamp area
Jaw Opening 30mm diameter
Electromagnetic field influence
Unstable or inaccurate readings may be displayed if there is an
electromagnetic field disturbance in the measurement environment
Maximum Voltage 600V AC/DC maximum applied to any terminal
Low battery indication is displayed
Auto Power OFF After 30 minutes
Operating Temperature and Humidity
0~30C (32~86F); 80%RH maximum
30~40C (86~104F); 75%RH maximum
40~50C (104~122F); 45%RH maximum
Storage Temperature and Humidity
-20~60C (-4~140F); 80%RH maximum (with battery removed)
Operating Altitude 2000m (6562’)
Battery power 3 x 1.5V ‘AAA’ alkaline batteries
Weight 265g (9.3 oz.) Including batteries
Dimensions (W x H x D) 77 x 228 x 41mm (3.0 x 9.0 x 1.6”)
Drop Protection 1m (approx. 3’)
Safety Standards Indoor use only; Complies with EN61010-1, CAT III 600V; Pollution
Degree 2
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]