TES TES-3600 User manual

3P4W POWER ANALYZER
TES - 3600
INSTRUCTION MANUAL
3 4
1 2
I4
U3 m-sU12 Y-M U23 D-h
£c
NO.
Q
P
S
TES ELECTRICAL ELECTRONIC CORP.
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CONTENTS
Title Page
I. SAFETYINFORMATION...........................................................................................1
II. INTRODUCTION FEATURE.....................................................................................4
III. SPECIFICATIONS........................................................................................................4
3-1 Environment Conditions....................................................................................... 4
3-2 Safety Specifications............................................................................................. 5
3-3 General Specification............................................................................................ 5
3-4 Electrical Specification......................................................................................... 7
IV. PARTS & CONTROLS...............................................................................................10
4-1 Description of Parts & Control keys................................................................... 10
4-2 Description of Display........................................................................................ 12
V. OPERATINGINSTRUCTION.................................................................................15
5-1 AC Current Adaptor............................................................................................ 15
5-2 Single-Phase 2-Wire (1P2W) Power System Measurement ............................... 17
5-3 Single-Phase 3-Wire (1P3W) Power System Measurement ............................... 20
5-4 Three-Phase 3-Wire (3P3W) Power System Measurement ................................ 23
5-5 Three-Phase 4-Wire (3P4W) Power System Measurement ................................ 26
5-6 Only One Current I4 Measurement..................................................................... 29
5-7 Manual Data Memory and Read Function Operation ......................................... 29
5-8 Auto Datalogging Function Operation................................................................ 30
5-9 Phase Sequence Measurement............................................................................ 31
5-10 Voltage, Current Waveform and Harmonic Analyzer........................................ 31
5-11 Disable Auto Power Off Function..................................................................... 31
VI. MAINTENANCE.........................................................................................................32
6-1 General Maintenance.......................................................................................... 32
6-2 Battery Replacement........................................................................................... 32
VII. RS-232 INTERFACE, SOFTWARE INSTALLATIONAND OPERATION....33
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I. SAFETY INFORMATION
This Instruction Manual provides information and warnings essential for operating
this meter in a safe manner and for maintaining it in safe operating condition. Before
using this meter, be sure to carefully read the following safety information.
DANGER
During high voltage measurement, incorrect measurement procedures could
result in injury or death, as well as damage to the meter. Please read this
manual carefully and be sure that you understand its contents before using the
meter.
DANGER
Do not use the meter or test leads if they look damaged.
Use extreme caution when working around bare conductors or bus bars,
Accidental contact with the conductor could result in electric shock.
To avoid damages to the meter,do not exceed the maximum limits of the input
values shown in the specifications.
Use the meter only as specified in this manual, otherwise, the protection
provided by the meter may be impaired.
SAFETY SYMBOLS
Caution refer to this manual before using the meter.
This symbol is affixed to the meter where the operator should consult
corresponding topics before using relevant functions of the meter.
This mark indicates explanation, which is particularly important that the
user should read before using the meter.
Dangerous voltages.
Meter is protected throughout by double insulation or reinforced insulation.
When servicing, use only specified replacement parts.
Comply with IEC61010-1, 2nd edition
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DANGER : Indicates that incorrect operation presents extreme danger of
accident resulting in death or serious injury to the user.
WARNING : Indicates that incorrect operation presents significant danger of
accident resulting in death or serious injury to the user.
CAUTION : Indicates that incorrect operation presents possibility of injury to
the user or damage to the meter.
NOTE : Denotes items of advice related to performance of the meter or to its
correct operation.
NOTES ON USE
In order to ensure safe operation and to obtain maximum performance from the
meter, observe the caution listed below.
Installation
CAUTION
The meter is designed for indoor use and can be safely used at temperatures
ranging from 0℃to 40℃.
Do not store or use the meter where it will be exposed to direct sunlight, high
temperature, high humidity, or condensation, if exposed to such conditions, the
meter may be damaged, the insulation may deteriorate, and the meter may no
longer satisfy its specifications.
The meter does not construct to be waterproof or dustproof, so do not use it in
a very dusty environment or in one where will get wet.
Do not use the unit where it may be exposed to corrosive or explosive gas. The
meter may be damaged, or may occur explosion.
Before use
WARNING
To prevent electric shock, do not allow the meter to become wet and do not use
the unit when your hands are wet.
When working with live circuits, take all suitable precautions against
accidents, including the use of electrical safety gear such as rubber gloves,
rubber boots, and safety helmets.
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Connecting meter
WARNING
To prevent electric shock, turn the power off before connecting the test leads
and then take measurements.
In order to prevent electrical shock and short –circuit accidents, shut off the
power to the line to be measured before connecting the line to be measured to
the voltage input terminals.
CAUTION
The measurement input and synchronizing input are not isolated from each
other. Connecting either one means that the other is exposed it is live, and
there is a danger of electric shock. To avoid electrical shock, connect both
terminals.
WARNING
To avoid electrical shock and / or meter damage, use caution when connecting
test leads to live components. The jaws of alligator clips can create a short
circuit between closely spaced live parts. Avoid making connections to feeder
conductors or bus bars at elevated potentials. Whenever, please make
connections to the output side of a circuit breaker as possible as you can, which
can provide better short circuit protection.
Follow all legal requirements.
Follow all instructions in the manuals.
Obey posted instructions.
Never assume that a circuit is de-energized, check it first.
Always set up the measurement first, then connect the test leads to the circuit.
Remove all test leads that are not in use.
Make connections to the meter first, before connecting leads to a live circuit.
Connect the ground lead first, then the voltage leads and the current probe,
Disconnect in reverse order.
Route test leads carefully.
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II.INTRODUCTION FEATURE
The symptoms of poor power quality include intermittent lock-ups and resets,
corrupted data, premature equipment failure, over-heating of components for no
apparent cause, etc. The ultimate cost is in downtime, decreased productivity and
frustrated personnel.
Use power analyzer to power quality trouble shooting can help you keep your
power system up and running, troubleshoot problems quickly, improve power
efficient, manage energy costs, zero in on harmonics, optimize power system
performance, improve power quality and analyze system data to design optimal
upgrades.
10 display Easy-to-view LCD screen, and is capable of showing many power
quality parameters at the same time.
4 current probe including for measuring a neutral line current.
Measures single-phase 2-wire, single-phase 3-wire, three-phase 3-wire and
three-phase 4-wire systems.
All True-RMS sensing , V, A, KW, KVAR, KVA, PF, θ, Hz, KWh, KVARh and
KVAh measurements.
Phase sequence indicator function.
Backlight display function.
Manual Data Memory and Read (99 sets).
Data logging (504K byte memory, 12,000 sets per block, total 20,000 sets).
RS-232 optical interface with three phase voltage / current waveform display and
harmonic analysis.
Easy-to-use key operation.
Light weight and portable design.
III.SPECIFICATIONS
3-1 Environment Conditions:
Altitude up to 2000 meters
Indoor use only
Relatively humidity 80% max.
Operation ambient 0～40℃
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3-2 Safety Specifications
Category Rating : 1000V Measurement Category III, Pollution Degree 2.
: IEC 61010-1 2nd Edition
CAT III : Measurement category in which measurements performed in the
building installation.
Safety Characteristics :
Current Clamps, Model TES AC3600, to be used only with the Three-Phase
Power Analyzer, Model TES-3600.
This manual contains information and warning that must be followed by the user
to ensure safe operation and to keep the meter and its accessories in a safe
condition.
Use of this meter and its accessories in a manner not specified by the
manufacturer may impair the protection provided by the equipment.
Equipment operation, the responsible body shall be made aware that, if the
equipment is used in a manner not specified by the manufacturer, the protection
provided by the probe assembly may be impaired.
3-3 General Specification
Maximum voltage between voltage input terminals and earth ground :
1000 Vrms
Maximum rated working voltage for current input : 0.35 Vrms
Maximum current for current probe : 1000 Arms
Numerical 10 display : 10 display 4 digit LCD maximum reading 9999.
Battery life : approx. 50 hours.
Auto power off : approx. 30 minutes.
Low battery indication : The
BT
is displayed when the battery voltage drops
below the operating voltage.
Backlight display time :Auto off approx. 30 seconds.
Sampling rate :Approx. 1 time per 2 seconds (Digital display).
Waveform and harmonic analyzer : 64 samples per period.
Current probe jaw opening diameter : Cables ψ40mm.
Operating temperature : 0℃to 40℃
Operating humidity : Maximum relative humidity of 80% for temperatures up to
31℃decrease linearly to 50% relative humidity at
40℃(non-condensed).
Temperature coefficient : 0.1 (specified accuracy)/℃(<18 or >28℃)
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Storage temperature and humidity : -10℃to 60℃
R.H. < 70% non-condensed.
Dimensions : Meter →235(L)117(W)54(H)mm.
Current probe →193(L)88(W)40(H)mm.
Weight : Meter including battery →approx. 730g
Current probe →approx. 333g
Accessories :
1. TES 3600 AC CURRENTADAPTOR x 4pcs
Category Rating : CAT III 600V per IEC61010-1, Pollution Degree2.
: IEC 61010-1 2nd Edition and IEC61010-2-032
Input : AC 1000A maximum.
Output : 0.35mV/A
2. Voltage test lead x 4pcs
Model no : TL 202I
Manufacturer : Hong Kai Co., Ltd.
Category Rating : CAT III, 1000V,AC 10A Max.
3. Alligator clip x 4pcs
Model no : FC-A23
Manufacturer : Fu Chyi Enterprise CO., Ltd.
Category Rating : CAT III, 1000V,AC 10A Max.
4. AC Adaptor (IN-OUT Isolated type, Input 120VAC 60Hz
Model : MW35-1200300
Input : 120VAC 60Hz 6.1W
Output : 12V DC 300mA
Manufacturer : MAW WOEI Enterprise CO., Ltd.
AC Adaptor (IN-OUT Isolated type, Input 230VAC 50Hz
Model : MWD48-1200300GS
Input : 230VAC 50Hz
Output : 12V DC 300mA
Manufacturer : MAW WOEI Enterprise CO., Ltd.
5. Battery 1.5V “AA” 8
6. Instruction manual 1
7. PC software CD-R 1
8. Carrying case 1
9. Optical RS232 interface 1
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3-4 Electrical Specification
Accuracy : ±(％of reading ＋number of digits) at 18℃to
28℃( 64℉to 82℉) with relative humidity to 80％.
The current error is specified within the largest circle which
can be drawn inside the jaw.
AC Voltage Trms measurement (V) :
Range
Resolution
Accuracy
Input
impedance
Overload
protection
Nominal power
system frequency
999.9V
0.1V
(0.3%rdg10dgts)
(>50V)
2MΩ
1000Vrms
Only 50Hz or 60Hz
Display item : RMS voltage value for each channel.
AC Current Trms Measurement (A) :
Range
Resolution
Accuracy
(including current probe)
Current
probe output
Overload
protection
Nominal power
system frequency
999.9A
0.1A
(0.5%rdg15dgts)
(>3A)
0.35mV/A
1000Arms
Only 50Hz or 60Hz
Display item : RMS current value for each channel.
Active Power measurement P(KW) :
Range
Resolution
Accuracy
999.9KW
0.1KW
1.0%rdg20dgts
Display items : Active power of each channel and its sum of multiple channels.
Polarity display : For influx (consumption) No symbol, For outflow
(regenerative) “ - ”.
Apparent Power measurement S (KVA) :
Range
Resolution
Accuracy
999.9KVA
0.1KVA
1.0%rdg20dgts
Measurement method : Calculate from RMS voltage U and RMS current I.
Display item : Apparent power of each channel and its sum of multiple channels.
Polarity display : No polarity.
Reactive Power measurement Q (KVAR) :
Range
Resolution
Accuracy
999.9KVAR
0.1KVAR
1.0%rdg20dgts
Measurement method : Calculate from apparent power S and active power P,
Q=
S P
2 2

.
Display item : Reactive power of each channel and its sum of multiple channels.
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Polarity display : For phase lag (LAG : current is slower than voltage) :
No symbol.
For lead phase (LEAD : current is faster than voltage) : “-”
Power Factor measurement (COSψ) :
Range
Resolution
Calculated Accuracy
0 ~ +1
0.001
3dgt
Measurement method : Calculate from apparent power S and active power P,
PF = COSψ=
P S/
Display item : Power factor of each channel and its sum of multiple channels.
Phase angle measurement (ψ) :
Range
Resolution
Calculated Accuracy
+90°~ 0°~ -90°
0.1°
3dgt
Measurement method : Calculate from power factor COSψ,ψ=COS-1PF.
Display item : Phase angle of each channel and its sum of multiple channels.
Polarity display : For phase lag (LAG : current is slower than voltage) :
No symbol.
For phase lead (LEAD : current is faster than voltage) : “-”.
Frequency measurement (Hz) :
Range
Resolution
Accuracy
Measurement source
60HZ
0.1Hz
0.1%rdg2dgt
Voltage U1 > 50V
Measurable input range : > 50V
Three Phase Sequence Detection :
Input voltage range
Normal phase indication
Reverse phase indication
Measurement source
3P > 50V
U1, U2 and U3
Active Power Energy measurement (KWh) :
Range
Resolution
Active power
accuracy
Timer interval
Timer Accuracy
3.999KWh
0.001KWh
1.0%rdg20dgt
1 sec
±50ppm (25℃, 77℉)
39.99KWh
0.01KWh
399.9KWh
0.1KWh
3.999MWh
0.001MWh
39.99MWh
0.01MWh
119.3MWh
0.1MWh
Measurement display : Display all active power consumption energy (sum of
absolute values).
Apparent Power Energy measurement (KVAh) :
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Range
Resolution
Apparent power
accuracy
Timer interval
Timer Accuracy
3.999KVAh
0.001KVAh
1.0%rdg20dgt
1 sec
±50ppm (25℃, 77℉)
39.99KVAh
0.01KVAh
399.9KVAh
0.1KVAh
3.999MVAh
0.001MVAh
39.99MVAh
0.01MVAh
119.3MVAh
0.1MVAh
Measurement display : Display all apparent power energy (sum of absolute
values).
Reactive Power Energy measurement (Kvarh) :
Range
Resolution
Reactive power
accuracy
Timer interval
Timer Accuracy
3.999Kvarh
0.001Kvarh
1.0%rdg20dgt
1 sec
±50ppm (25℃, 77℉)
39.99Kvarh
0.01Kvarh
399.9Kvarh
0.1Kvarh
3.999Mvarh
0.001Mvarh
39.99Mvarh
0.01Mvarh
119.3Mvarh
0.1Mvarh
Measurement display : Display all reactive power consumption (sum of
absolute values).
Harmonic measurement (use only PC on line analyzer)
Order
Accuracy
Harmonic Source
No. of samples per period
1 ~ 31
3%THD
U1, U2, U3 > 80V
I1, I2, I3 > 50A
64
Waveform (use only PC on line displayed)
Select phaseA, B or C.
Select Voltage and current waveform output.
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IV. PARTS & CONTROLS
4-1 Description of Parts & Control keys
U12 Y-M
Q
NO.
P
£c
I4
U3 m-s
S
U23 D-h
I3
I1
I4
I2
N
¢»
U1 U2 U3
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1. Input for voltage terminals (U1, U2, U3, N).
2. Input for current probe jacks (I1, I2, I3, I4).
3. Plug for externalAC adaptor power supply input.
4. Optical RS232 interface output.
5. LCD display.
6. WIRING key : Select the type of electrical system under test, press WIRING
key to select 1P2W (To measure signal-phase two-wire power
lines), 1P3W (To measure signal-phase three-wire power lines),
3P3W2M (To measure three-phase three-wire power line
without neutral, using the two power meter method, use this
when measuring three-phase power with 2-current probe
measurement only.) and 3P4W (To measure three-phase
four-wire power lines with neutral) electrical system in cycles.
7. key:Phasesequence detection functionkey. Ina3P4Wmode,pressand hold
down this key, it will display phase detection results as follows :
Normal phase
Reverse phase
8. HOLD key : Data hold function key, press HOLD key to hold data, the HOLD
annunciator is displayed, press HOLD key again to exit Hold
function.
Press and hold down HOLD key then press key turn on the
meter, the “ ” mark disappear, exit auto power off function.
9. key : Backlight function key, press key to turn on and off of backlight.
The backlight will switch off automatically after 30 seconds.
10. PF key : Display measured power factor value control key, the PF annunciator
is displayed.
11. Θkey : Display measured phase angle value control key, the ψannunciator is
displayed.
12. Hz key : Display measured frequency value control key, the Hz annunciator is
displayed.
13. I4 key : Display measured I4 current probe value control key, the I4
annunciator is displayed.
14. SET key : Setting current date and time function key, press SET key to enter
current time setting mode and interval time setting mode for auto
datalogging use.
15 TIME key : Display current date and time control key, press and hold down
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TIME key display current data and time.
16.  Keys : Setting current date and time, or recall manual data
memory to read memory data in cycles control keys.
17. START key : Start auto datalogging function.
18. STOP key : Stop auto datalogging function. Press START key to resume
recording in current data sets.
19. MEMORYkey : Manual data memory control key. Press MEMORY key each
time to store one set current display reading into the
memory, the M annunciator and the memory address
number is displayed, total memory size is 99 sets.
20. READ key : Read manual memory data control key.
21. POWERKey : Display measured power value control key, the Pt123,
Qt123 and St123 annunciatorswill be displayed in cycles.
22. ENERGY key : Display total integrated power energy value control key, the
three h annunciators will be displayed.
23. KEY Lock key : Lock all the functions key, except and keys,the
LOCK annunciator is displayed.
24. key : Power on-off control key.
4-2 Description of Display
U23 D-h
U12 Y-M
U3 m-s
Q
NO.
P
S
: Auto power off indication.
HOLD : Display hold mode.
LOCK : Set key lock mode.
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BT
: Low battery indication.
ψ: Phase angle display.
: Phase angle unit.
1P2W : Measure signal-phase two-wire power line indication.
1P3W : Measure signal-phase three-wire power line indication.
3P3W2M : Measure three-phase three-wire power line indication.
3P4W : Measure three-phase four-wire power line indication.
P1 : Phase 1 active power measured display indication.
P2 : Phase 2 active power measured display indication.
P3 : Phase 3 active power measured display indication.
Pt : Total active power measured display indication and total active energy
measured display indication.
KW : Active power unit.
KWh, MWh :Active energy unit.
PF1 : Phase 1 power factor measured display.
PF2 : Phase 2 power factor measured display.
PF3 : Phase 3 power factor measured display.
PFt : Total power factor measured display.
I4 : Current probe 4 current measured display.
Hz : Frequency unit.
DATANo. : Last manual datalogged memory address number indication
(01~99).
M: Manual datalogged indication, M displaysone time store one sets data into
the memory.
DATA R No. : Recall manual datalogged address number indication, the
memory data displayed for read.
DATA M  :Auto datalogging indication, M disappearsone time store one sets
data into the memory .
01 ~ 10 : Maximum 10 memory blocks can be use, only 12,000
sets data can be stored in one block.
Maximum 20,000 sets data can be stored.
FF : Memory full indication, if exceed 10 memory blocks or
exceed 20,000 stored data.
Q1 : Phase 1 reactive power measured display indication.
Q2 : Phase 2 reactive power measured display indication.
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Q3 : Phase 3 reactive power measured display indication.
Qt : Total reactive power measured display indication and total reactive energy
measured display indication.
Kvar : Reactive power unit.
Kvarh, Mvarh : Reactive energy unit.
S1 : Phase 1 apparent power measured display indication.
S2 : Phase 2 apparent power measured display indication.
S3 : Phase 3 apparent power measured display indication.
St : Total apparent power measured display indication and total apparent energy
measured display indication.
KVA : Apparent power unit.
KVAh :Apparent energy unit.
MVAh : Apparent energy unit.
TIME : Current data and time indication.
Y-M D-h m-s : Date and time displayed.
INTV :Auto datalogging interval time setting indication.
START : Energy calculating start time indication.
STOP : Energy calculating stop time indication.
U1, V,A : 1P2W phase U1 voltage and current prove I1 measured display
indication.
U1, V,A, U2, V,A : 1P3W phase U1, U2 voltage and current probe I1, I2
measured display indication.
U12, V, I1,A, U23, V, I2,A : 3P3W2M phase U12, U23 voltage and current
probe I1, I2 measured display indication.
U1, V,A, U2, V,A, U3, V, A : 3P4W phase U1, U2, U3 voltage and current
probe I1, I2, I3 measured display indication.
V: Voltage unit.
A: Current unit.
1000V : Voltage range indication.
250A, 500A, 1000A : Current range indication (Autoranging)
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V. OPERATING INSTRUCTION
CAUTION
If possible, before connecting the meter to the electrical equipment to be
tested,take off the electrical equipment’s power.
DANGER
Voltage input connectors U1 to U3 are common for input connector N, each
input connectors are not insulated.
Do not connect the unnecessary number of cords.
WARNING
Always set up the measurement first, then connect the test leads to the circuit.
Make connections to the instrument first, before connecting leads to a live
circuit.
Connect the ground lead first, then the voltage leads and the current probe,
Disconnect in reverse order.
Remove all test leads that are not in use.
※U1 must be connected to voltage source during the measurement of U2, U3,
I1, I2 and I3, because U1 is the main signal source of the whole meter
measuring system. Otherwise you could not have any measurement from
U2, U3, I1, I2 and I3.
5-1 AC Current Adaptor
Safety Information
Read First: Safety Information
To ensure safe operation and service of the current clamp, follow these instructions:
Read the operating instructions before use and follow all safety instructions.
Use the Current Clamp only as specified in the operating instructions,
otherwise the clamp’s safety features may not protect you.
Adhere to local and national safety codes. Individual protective equipment
must be used to prevent shock and arc blast injury where hazardous live
conductors are exposed.
Do not hold the Current Clamp anywhere beyond the tactile barrier, see Figure 1.
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Before each use, inspect the Current Clamp. Look for cracks or missing
portions of the clamp housing or output cable insulation. Also look for loose
or weakened components. Pay particular attention to the insulation
surrounding the jaws.
Never use the clamp on a circuit with voltages higher than 600V CAT III.
Use extreme caution when working around bareconductor or bus bars. Contact
with the conductor could result in electric shock.
Use caution when working with voltages above 60V or 30V ac. Such voltages
pose a shock hazard.
Warning
To avoid possible electric shock or personal injury:
Before each use, inspect the Current Clamp. Look for cracks or missing
portions of the clamp housing and output cable insulating cover and for loose
or weakened components. Pay particular attention to the insulation
surrounding the clamp jaws.
Do not use a damaged Current Clamp. If a clamp is damaged, tape it shut to
prevent unintended operation.
Measurement Considerations
Center the conductor inside the Current Clamp jaw.
Make sure the clamp is perpendicular to the conductor.
For optimal reading, make sure the conductor is positioned between the
alignment marks on the jaws of the Current Clamp.
Observe the following guidelines when making measurements :
Avoid taking measurements close to other current carrying conductors.
Operation
To use the AC Current Adaptor, refer to “Measurement Considerations” and
Figure 1.
1. Connect the clamp cable to the instrument.
2. The arrow on the top of the clamp must face towards the load of the circuit.
3. Connect the current clamp jaws around the conductor to be measured.
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Warning
To avoid shock or personal injury, keep fingers behind the tactile barrier, see
Figure 1.
Load Direction Arrow
Alignment Marks
Tactile Barrier
Figure 1
5-2 Single-Phase 2-Wire (1P2W) Power System Measurement
Application :
Receptacle branch circuit
Lighting loads
Troubleshooting electrical distribution system.
Measuring current harmonic (use PC).
Measuring line rms voltage.
Measuring power on single phase loads.
Measuring line rms current.
Measuring frequency.
Measuring voltage harmonics (use PC).
Measuring current harmonics (use PC).
Measuring voltage waveform (use PC).
Measuring current waveform (use PC)
Measuring the load on a transformer.
Recording the load on a transformer.
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A : Line, N : Neutral, G : Ground, Face the arrow toward the load.
U2
N
I3
I4
I1
I2
U1
Ⅲ
?
U3
1P2W Wiring Connection Diagram
1. Press key to turn on the meter.
2. Press WIRING key to select the 1P2W electrical system under test, the 1P2W
annunciator will be displayed.
3. Connect the voltage test leads and current probe to the meter.
Connect the black voltage test lead to the “N” terminal.
Connect the red voltage test lead to the “U1” terminal.
Connect the I1 current probe output plug to the “I1” jack.
If you want to measure ground leakage current, connect the I4 current probe
output plug to the “I4” jack.
4. Connect the voltage test leads and current probe to the electrical equipment to be
tested.
CAUTION
If possible, before connecting the voltage test leads and current probe to
the electrical equipment to be tested, take off the electrical equipment’s
power.
Connect the black voltage test alligator to the Neutral Line “N”.
Connect the red voltage test alligator to the Line “A”.
Press I1 current probe trigger to open the jaw and fully enclose the Line “A”.
If you want to measure ground leakage current, press I4 current probe the
trigger to open the jaw and fully enclose the Ground Line “G”.
Shop for Data Logging products online at: www.DataLoggerStore.ca 1.877.766.5412