AEMC 670 User manual


CLAMP-ON METER
670
675
ENGLISH User Manual

Certificate of Compliance
Chauvin Arnoux
®
, Inc. d.b.a. AEMC
®
Instruments
certifies that this instrument has been calibrated
using standards and instruments traceable to
international standards.
We guarantee that at the time of shipping your
instrument has met its published specifications.
An NIST traceable certificate may be
requested at the time of purchase, or obtained
by returning the instrument to our repair and
calibration facility, for a nominal charge.
The recommended calibration interval for this
instrument is 12 months and begins on the date
of receipt by the customer. For recalibration,
please use our calibration services. Refer to our
repair and calibration section at www.aemc.com.
Serial #: ________________________________
Catalog #: 2117.49 / 2117.50
Model #: 670 / 675
Please fill in the appropriate date as indicated:
Date Received: ___________________________
Date Calibration Due: ______________________
Chauvin Arnoux®, Inc. d.b.a AEMC®Instruments
www.aemc.com

Table of Contents
1. INTRODUCTION........................................ 3
1.1 International Electrical Symbols .............. 4
1.2 DenitionofMeasurementCategories.... 4
1.3 ReceivingYourShipment ........................ 5
1.4 OrderingInformation ............................... 5
1.4.1 Accessories/ReplacementParts.. 5
2. PRODUCT FEATURES............................... 6
2.1 Description .............................................. 6
2.2 Model670/675ControlFeatures............. 7
2.3 LCDDisplay ............................................ 8
2.4 ButtonFunctions ..................................... 9
2.4.1 HOLDButton ............................... 9
2.4.2 CorrectionofZeroin
 DCmeasurement........................ 9
2.4.3 AutoPowerOFF.......................... 9
2.4.4 DISPLAYButton ........................ 10
2.4.5 MIN/MAXFunction(500ms) ...... 10
2.4.6 PeakFunction(1ms).................. 10
2.4.7 BacklightButton......................... 10
3. SPECIFICATIONS.................................... 11
3.1 ElectricalSpecications ........................ 11
3.2 MechanicalSpecications..................... 13
3.3 EnvironmentalSpecications ................ 14
3.4 SafetySpecications............................. 14
4. OPERATION ............................................ 15
4.1 ACCurrentMeasurement ..................... 15
4.2 ACVoltageandCurrent
 MeasurementSimultaneously............... 16

4.3 DCCurrentMeasurement(675only) ......17
4.4 ACVoltMeasurement ........................... 18
4.5 DCVoltMeasurement ........................... 19
4.6 ResistanceMeasurement ..................... 20
4.7 ContinuityMeasurement ....................... 21
4.8 TemperatureMeasurement ................... 22
4.9 FrequencyMeasurementUsing
 VoltageInput ......................................... 23
4.10 FrequencyMeasurementUsing
 CurrentInput ......................................... 24
5. MAINTENANCE....................................... 25
5.1 Warning!................................................ 25
5.2 Cleaning ................................................ 25
5.3 BatteryReplacement............................. 25
RepairandCalibration............................................ 27
TechnicalandSalesAssistance ............................. 27
Limited Warranty .................................................... 28
WarrantyRepairs.................................................... 28

Clamp-onMeterModels670and675 3
CHAPTER 1
INTRODUCTION
Warning
● Readtheusermanualbeforeoperatingand
followallsafetyinformation.
● Onlyusethemeterasspeciedinthisuser
manual.
● Neverusethismeteronacircuitwithvolt-
agesgreaterthan600Vrms@50/60Hz,
CATIVor1000V,CATIII.
● Nevermeasurecurrentwhilethetestleads
areconnectedtotheinputjacks.
● Donotoperatethemeterifthebodyortest
leadslookdamaged.
● Checktherotaryrangeswitchandmake
sureitisatthecorrectpositionbeforeeach
measurement.
● Donotperformresistanceandcontinuity
testonalivecircuit.
● Useextremecautionwhenmeasuringlive
systemswithvoltagesgreaterthan60VDC or
30VAC.
● Useextremecarewhenworkingaroundbus
barsandbareconductors.
● Donotusethemeterinoverrange/overload
conditions( ).
● Foraccuratereadings,changethebattery
whenthe symbolappears.

4 Clamp-onMeterModels670and675
1.1 International Electrical Symbols
This symbol signifies that the instrument is protected by
double or reinforced insulation.
This symbol on the instrument indicates a WARNING and that
the operator must refer to the user manual for instructions
before operating the instrument. In this manual, the symbol
preceding instructions indicates that if the instructions are not
followed, bodily injury, installation/sample and product damage
may result.
Risk of electric shock. The voltage at the parts marked with this
symbol may be dangerous.
This symbol refers to a type A current sensor. This symbol sig-
nifies that application around and removal from HAZARDOUS
LIVE conductors is permitted.
Ground.
In conformity with WEEE 2002/96/EC.
1.2 Definition of Measurement Categories
CAT II: Formeasurementsperformedoncircuitsdirectly
connected to the electrical distribution system.
Examples are measurements on household
appliancesorportabletools.
CAT III: For measurements performed in the building
installation at the distribution level such as on
hardwired equipment in xed installation and
circuitbreakers.
CAT IV: For measurements performed at the primary
electrical supply (<1000V) such as on primary
overcurrent protection devices, ripple control
units,ormeters.

Clamp-onMeterModels670and675 5
1.3 Receiving Your Shipment
Upon receiving your shipment, make sure that the con-
tentsareconsistentwiththepackinglist.Notifyyourdis-
tributorofanymissingitems.Iftheequipmentappearsto
bedamaged,leaclaimimmediatelywiththecarrierand
notifyyourdistributoratonce,givingadetaileddescription
ofanydamage.Savethedamagedpackingcontainerto
substantiateyourclaim.
1.4 Ordering Information
TRMS Clamp-on Meter Model 670............Cat. #2117.49
Includes meter, set of test leads (red/black with safety needle tips),
K-type thermocouple, one 9V battery, soft carrying case and a user
manual.
TRMS Clamp-on Meter Model 675............Cat. #2117.50
Includes meter, set of test leads (red/black with safety needle tips),
K-type thermocouple, one 9V battery, soft carrying case and a user
manual.
1.4.1 Accessories and Replacement Parts
SoftCarryingCase ......................................Cat. #2118.89
K-typeThermocouple ..................................Cat. #2118.90
Set of 2, 5 ft color-coded leads....................Cat. #2152.05

6 Clamp-onMeterModels670and675
CHAPTER 2
PRODUCT FEATURES
2.1 Description
The AEMC® Models 670 and 675 are general purpose
professional clamp-on meters that measure up to the
tougheststandards.Thesemeterso󰀨eracompletesetof
measurementranges(ACAmps,DCAmps[675only],AC
Volts,DCVolts,Ohms,Continuitywithbeeper,Frequency
from V or A, and Temperature) and are in compliance
with international safety and quality standards to ensure
professionalandreliablemeasuringtools.
Thesemetersaredesignedtomeasureanddisplayamps
and volts at the same time. They are also auto-ranging
andprovide the bestmeasurement rangeand resolution
fortroubleshooting.
The Models 670 and 675 are sized for comfortable,
one-handed operation. The tapered and hooked jaw
design facilitates maneuvering in crowded wiring and
breaker panels, making it easy to select conductors.
The jaw opening accommodates one 750 kcmil cable or
two 350 kcmil cables. The large and easy-to-read 9999-
count LCD features comprehensive user information
symbols, such as low battery, polarity, overload, and an
analog bargraph for easy trend readings. Both models
are equipped with a Data Hold function that freezes the
measurementforlaterviewing,Min/Max,andPeakfunction
forcaptureofsignals.
TheModel670and675areTrueRMSclamp-onmeters
that provide RMS measurements for today’s non-linear
electrical environments.

Clamp-onMeterModels670and675 7
2.2 Model 670/675 Control Features
DISPLAY
MIN MAX
PEAK
HOLD
DUAL TRMS DISPLAY
1000A
1000V CAT III
600V CAT IV
1000V
CAT III
MODEL 670
TRMS CLAMP METER
1
2
3
4
5
6
7
8
DUAL TRMS DISPLAY
ZERO
Press 2s
1
2
3
4
5
6
7
8
1000A
1000V CAT III
600V CAT IV
MODEL 675
TRMS CLAMP METER
1400A
1000V
CAT III
1. JawAssemblyModel670-1.65"(42mm)
  Model675-1.58"(40mm)
2. SafetyBarrierAnti-slipGuard
3. LeverforJawOpening/Closing
4. ButtonFunctions(see§2.4)
5. LCDDisplay
6. Positive(red)InputandCOM(black)Input
7. DataHoldButton
8. RotaryRangeSelectorSwitch

8 Clamp-onMeterModels670and675
2.3 LCD Display
Icon Function
AUTO Automatic Range
HOLD Freezes the Display
MIN Minimum Value
MAX Maximum Value
PEAK Peak Value
ZERO ADC Zero Function (675 only)
DC Input
AC Input
Auto Power OFF Indication
Low Battery
Continuity Beeper Enabled
ΩResistance Measurement Indicator
A V Current /Voltage Indicator
C°/F°Degrees Celsius/Fahrenheit
Hz Frequency Measurement Indicator