Extech 382068-NIST 1000 Amp True RMS AC DC Power Data Logger
Extech 382068 1000 Amp True RMS AC DC Power Data Logger
Extech 382068 1000A Clamp-on Power Datalogger
Datalogging AC/DC Power Clamp-on Meter
Model 382068
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Table of Contents
Specifications
General Specifications …………………………………………………………. 3
Range Specifications……………………………………………………………. 3
Safety Information ……………………………………………….………………. 5
Meter and Display Descriptions………………………………..……….……… 6
Measurements
AC/DC Power Measurements………………………………………………….. 7
AC/DC Voltage Measurements………………………………………………… 16
AC/DC Current Measurements………………………………………….……… 17
Resistance and Continuity Measurements…………………………….……… 18
Diode Tests …………………….…………….……………………………..…… 19
Min/Max Mode ………………………………….……………………………..…… 19
Peak Detector ………………………………….……………………………..…… 19
Data Hold .………………………………….…………………………………..…… 19
Datalogging …………………………………….……………………………...…... 20
Maintenance
Battery Replacement..………………………………….…………………..…… 21
Cleaning ………………………………….……………………………..……….. 21
Repair and Calibration Services ………………………………………….……. 21
Tech Support Hotlines..………………………………….………………………. 21
Introduction
Congratulations on your purchase of the Extech 382065/382068 Datalogging AC/DC Power Clampon Meter. Measurements include DC and AC True Power, Apparent Power, Power Factor, and True
RMS Voltage, Current, & Watts. Status indication for Lead/Lag and PF is included as well as dual displays of KW + PF, KVA + PF, V + A, A + Hz, and V + Hz. The frequency of Voltage and Current measurements can be displayed also. Datalogger and PC interface features are built into the meter.
The Datalogger/Data Acquisition Software package is for exclusive use with the Model
382065/382068 Clamp on Power Datalogger. Windows® XP, Vista, Window’s 7-32 bit, and 7-64 bit operating systems are supported. Users can download readings stored in the datalogger to a PC, program sample rates for datalogging, remotely monitor readings, and save readings to ASCII files for export to spreadsheet and other programs. Careful use will provide years of reliable service.
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Specifications
General Specifications
Main display
Bargraph display
4-digit (10,000 count) multi-function LCD
40-segment bargraph
Datalogger 4000 data point continuous logging (25 point manual logging) with MIN / MAX and Peak detect recording
Built-in detector captures positive and negative peaks to .1ms Peak hold
Maximum voltage
Meter power
Battery life
Low battery indication
Auto power off
Display update rate
600Vrms between any terminal and earth ground
9V battery
30 hours (approx.)
Battery icon is displayed
After 30 minutes (approx.)
Jaw opening
2 times per second (Bargraph); 5 times per second (Digits),
(once every 6 seconds for the KW function)
For Cables φ 1.8” (46mm)
32 to 122 o
F (0 to 50 o
C) Operating temperature
Operating Humidity
Storage temperature
Storage Humidity
Dimensions/Weight
R.H. < 80% non-condensing.
14 o
to 140 o
F (-10 to 60 o
C)
RH < 70% non-condensing
10.24 x 3.66 x 1.77" (260 x 93 x 45mm) / 1 lb. (450g)
Accessories
Range Specifications
Carrying case, test leads, and 9V battery
Accuracy specs are
± (reading + no. of digits) at 64 o
to 82 o
F (18 o
to 28 o
C) and RH to 80%
True power & Apparent power measurements (600KW Max.)
Input
Overload protection
V<130V, A<150A
V>130V, A<150A
V<130V, A>150A
V>130V, A>150A
0.01
0.1
±(2%+5)
±(2%+1)
45Hz to 500Hz 600V/1100A
Power Factor
0.30 to 1.00
0.00 to 0.30
0.001 ± (4% + 10d)
Not specified
*Minimum voltage: 100V AC, Minimum Current: 20A AC
10Hz to 5KHz
DCA
Range Resolution
2 to 1000A 0.1A
±
Accuracy
(1.5% + 5)
>100V / 10A
1100A
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ACA
Overload protection
1100A 2 to 1000A 0.1A
±
(1.5% + 5)
Crest factor < 3 for stated accuracy
DCV
Range Resolution Accuracy
2 to 600V 0.1V
±
(0.5% + 5)
45Hz to 500Hz
Input impedance
1MΩ
Overload protection
600V
ACV
Range Resolution Accuracy
Input impedance
2 to 600V 0.1V
± (0.5%+5)
Crest factor < 3 for stated accuracy
1MΩ
Frequency range
Overload protection
45Hz to 500Hz 600Vrms
Peak indication
Range
20A~80A
Resolution
0.1A
80A~1000A 0.1A
Peak detect acquisition time .1ms
Peak indication
Range
20V~80V
Resolution
0.1V
80V~600V 0.1V
Peak detect acquisition time .1ms
Audible continuity
Range
Continuity beeper
< 50 Ω
±
±
±
±
Accuracy
(10% + 10)
(6% + 10)
Accuracy
(10% + 10)
(6% + 10)
Open circuit voltage
3.2V
1100A
1100A
600Vrms
600Vrms
Overload protection
600Vrms
Resistance ( Ω )
Range Resolution
10KΩ 1Ω
Diode test
Range
Accuracy
±
(1% + 5)
Resolution
0.001V
Frequency (Hz)
Range Resolution Accuracy
Open circuit voltage
3.2 V
Voltage sensitivity
600Vrms
Overload protection
600Vrms
Overload protection
1KHz 0.1Hz
±
(0.5% + 5) 10V or 10A 600V / 1100A
5KHz
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Safety Information
1. Read the following safety information carefully before attempting to operate or service the meter.
2. Read all operating instructions before use.
3. To avoid damage to the instrument do not exceed the published input limits.
4. Do not use the meter or test leads if they appear damaged. Use extreme caution when working around bare conductors or bus bars. Accidental contact with a conductor could result in electric shock.
5. Use the meter only as specified in this manual otherwise the protection provided by the meter may be impaired.
6. Use caution when working with voltages above 60VDC or 30VAC RMS. Such voltages pose a shock hazard.
7. Before taking resistance or continuity measurements, disconnect the circuit from the main power supply and disconnect all loads from the circuit.
8.
Safety Specifications:
• Installation categories III
• Pollution degree 2
• Altitude: 2000m max
• Indoor use only
Safety symbols
Caution: Refer to this manual before using the meter.
Dangerous voltages.
Meter is protected throughout by double insulation or reinforced insulation.
When servicing, use only specified replacement parts.
Complies with EN-61010-1, IEC 1010-2-32
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Meter Description
1.
Transformer
2.
Jaw
3.
Data Hold button
4.
Function
5.
Peak Detector READ button
6.
MIN/MAX/PEAK function button
7.
DC A/W ZERO button
8.
RECORD
Figure 1
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9.
LCD
10. PC Interface Jack
12. VΩHz terminal
13. Low battery indication
Figure
Hz
HOLD
V
1000A
KW
3 3W
3 4W
OFF
WL123 MEM READ
3 3W
P P-
3 4W
PF lead lag
HOLD MAX MIN
Hz
KVA
RECORD
K
KW
KVA
600V MAX CAT
WL123 MEM P P-HOLD MAX -
3 3W 3 4W
MAX -
K
KW
KVA
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AC/DC Power Measurements
AC/DC 1
φ2W Power (W) and Power Factor (PF) Measurements
PF lag
KW
600V MAX CAT
HOLD
Hz
1000A
V OFF
KW
3 3W
3 4W
PF lag
KW
600V MAX CAT
Figure 3
WARNING
Do not clamp on to a conductor when zeroing the jaw's residual magnetic field until the LCD reads zero.
1. With the clamp jaws empty, turn the clamp meter on by setting the rotary switch to the KW position
(refer to figure 3).
2. Insert the test leads into the input terminals (black lead to COM and red lead to '+').
3. Connect the probe end of the black test lead to the neutral line.
4. Connect the probe end of the red lead to the power line.
5. Clamp the meter onto the conductor where the red test lead is connected.
6. The power clamp will automatically select the appropriate range.
7. Read the Watt (middle of display) and PF (top display) values on the LCD.
8. Press the READ button to scroll through the dual displays of KW + PF, A + V, and KVA + PF.
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Note: When calculating KVAR, the KVAR accuracy greatly depends on V, A and KW measurement accuracy (especially when PF is very close to 1). To get a more accurate value when PF is greater than 0.91 (φ < 25°), use the following equation for a pure sine wave
PF
=
KW
KVA
KVA (Apparent Power): KVA =
V
* A
1000
KVAR (Reactive Power): KVAR=
(KVA)
2
−
(KW)
2
Note
: The "+" sign printed on the jaw must face the power source.
3φ3W AC/DC Power Measurement
WL12
3 3W
WL12
3 3W
PF lag
KW
HOLD
Hz
1000A
V
KW
3 3W
3 4W
OFF
WL12
3 3W
PF lag
KW
600V MAX CAT
600V MAX CAT
Figure 4
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A. With the Clamp jaws empty
, turn the meter on by setting the rotary switch to the 3φ3W position.
WL12
will appear on the upper left side of the LCD prompting the user to take a
W
RS (L2 L1)
measurement.
1. Insert the test leads into the input terminals (black to COM terminal and red to '+').
2. Select one phase (eg. S or L2) as COM and connect the probe end of the black lead to that phase (eg. S or L2).
3. Connect the probe end of the red test lead to the second phase (eg. R or L1).
4. Clamp the meter onto the same phase as the red test lead (eg. R or L1).
5. The meter will automatically select the proper range.
6. Wait until the reading is stable (about 6 seconds), and then press the READ button. WL23 will appear prompting the user to take a measurement of W
TS
(W
L3 L2
).
B. Measure W
TS (L3 L2)
(refer to figure 5).
1. Disconnect the red test lead from the phase where the clamp is connected.
2. Connect the red test lead to the third phase (eg. T or L3).
3. Clamp onto the third phase (where the red test lead is connected; eg. T or L3).
4. The meter will automatically select the proper range.
5. Wait until the reading is stable (about 6 seconds) and then press the READ button.
C. The power clamp will process these measurements and display the result. WL123 appears in the upper left corner of the LCD and the 3φ3W power measurement is displayed in watts (this value is now stored in meter memory). The following equations are provided for your information.
W
3
φ3W
= W
RS(L1L2)
+ W
TS(L3L2)
KVA
3
φ
3
W
=
K
W
2
3
φ
3
W
+
KVAR
2
3
φ
3
W
PF
3
φ
3
W
=
KW
3
φ
3
W
KVA
3
φ
3
W
Notes:
1.
Once a phase is designated as common (COM) it should remain as such in all subsequent measurements. For example, if the S (or L2) phase is selected, S
(or L2) phase is connected to COM during the measurements of W
RS
(or
W
L1L2
) and W
TS
(or W
L3L2
) in 3φ 3W unbalanced power.
2.
The "+" sign printed on the jaw must face the power source.
3.
In 3φ3W unbalanced power measurements, if either WRS or WTS is negative
(connection error) ensure that all test lead and clamp connections are correct.
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WL 23
3 3W
WL 23
3 3W
PF lag
KW
600V MAX CAT
HOLD
Hz
1000A
V
KW
3 3W
3 4W
OFF
WL 23
3 3W
PF lag
KW
600V MAX CAT
Figure 5
WL123
3 3W
PF lag
HOLD
KW
600V MAX CAT
Figure 6
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3
φ4W AC/DC Power Measurement
WL1
3 4W
WL1
3 4W
PF lag
KW
HOLD
Hz
1000A
V
KW
3 3W
3 4W
OFF
WL1
3 4W
PF lag
KW
600V MAX CAT
600V MAX CAT
Figure 7
WL 2
3 4W
WL 2
3 4W
PF lag
KW
HOLD
Hz
1000A
V
KW
3 3W
3 4W
OFF
WL 2
3 4W
PF lag
KW
600V MAX CAT
600V MAX CAT
Figure 8
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WL 3
3 4W
WL 3
3 4W
PF lag
KW
600V MAX CAT
HOLD
Hz
1000A
V
KW
3 3W
3 4W
OFF
WL 3
3 4W
PF lag
KW
600V MAX CAT
Figure 9
WL123
3 4W
PF lag
HOLD
KW
600V MAX CAT
Figure 10
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A. Measure W
R (L1)
/ P
FR (L1)
(refer to figure 6).
1. With the jaw enclosure empty, turn the meter on by setting the rotary switch to the 3φ4W position.
2. Insert the test leads into the input terminals (black lead to the COM terminal and red to '+').
3. Connect the black lead's probe end to the neutral line.
4. Connect the red lead's probe end to the first phase (eg. R or L1).
5. Clamp on to the same phase as the red test lead (eg. R or L1).
6. The meter will automatically select the proper range.
7. Wait until the reading is stable (about 6 seconds) then press the READ button. WL1 will disappear and WL2 will appear prompting the user to take a W
S (L2)
/ P
FS (L2) measurement.
B. Measure W
S (L2)
/PF
S (L2)
(refer to figure 7)
1. Disconnect the red test lead from the phase where the jaws are clamped.
2. Connect the red test lead to the second phase (eg. S or L2).
3. Clamp onto the phase where the red test lead is connected (eg. S or L2 phase)
4. The meter will automatically select the proper range.
5. Wait until the reading is stable (about 6 seconds) then press the READ button. WL2 will disappear and WL3 will appear prompting the user to take a W
T (L3)
/ P
FT (L3)
measurement.
C. Measure W
T (L3)
/P
FT (L3)
(refer to figure 8)
1. Disconnect the red test lead from the phase where the meter's jaws are clamped.
2. Connect the red test lead to the third phase (eg. T or L3 phase).
3. Clamp onto the phase where the red test lead is now connected (eg. T or L3).
4. The meter will automatically select the proper range.
5. Wait until the reading is stable (about 6 seconds) and then press the READ button. WL3 will disappear from the upper left hand area of the LCD.
6. The meter will process these three sets of data (refer to figure 9) and display the 3φ4W power measurement (WL123 will be displayed). The 3φ4W measurement will then be stored in memory. The following equations are provided for your information.
W
3
φ4W
= W
R(L1)
+ W
S(L2)
W
T(L3)
KVA
3
φ
4
W
=
K
W
2
3
φ
4
W
+
KVAR
2
3
φ
4
W
PF
3
φ
4
W
=
KW
3
φ
4
W
KVA
3
φ
4
W
Notes:
1. The "+" sign printed on jaw must face the power source.
2. For 3φ4W power measurements, WR or WS and WT must be positive. If any are negative, check the test lead and clamp connections for polarity errors.
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1
φ3W Power Measurement
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WL12
3 3W
WL12
3 3W
PF lag
KW
HOLD
Hz
1000A
V
KW
3 3W
3 4W
OFF
WL12
3 3W
PF lag
KW
600V MAX CAT
600V MAX CAT
Figure 11
WL 23
3 3W
WL 23
3 3W
PF lag
KW
600V MAX CAT
HOLD
Hz
1000A
V OFF
KW
3 3W
3 4W
WL 23
3 3W
PF lag
KW
600V MAX CAT
Figure 12
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1φ3W power measurements are similar to 3φ3W unbalanced power measurement except for the nomenclature. Two measurements are required:
(L1G)
and W
TS (L2G)
.
A. Measure W
RS (L1G)
(refer to figure 11).
1. With the Clamp jaws empty, turn the meter on by setting the rotary switch to the 3φ3W position.
2. Insert the test leads into the input terminals.
3. Connect the probe end of the black lead to ground.
4. Connect the probe end of the red lead to the second phase (eg. L1).
5. Clamp onto the second phase (eg. L1).
6. The meter will automatically select the proper range.
7. Wait until the reading is stable (about 6 seconds) and then press the READ button.
8. WL23 will appear prompting the user to take the
W
TS (L2G)
measurement.
WL123
3 3W
PF lag
HOLD
600V MAX CAT
KW
B. Measure W
TS
or W
L2G
(refer to figure 12).
1. Disconnect the red test lead from the phase where the jaws are clamped.
2. Connect the red test lead to the L2 line.
3. Clamp onto the L2 line (where the red test lead is connected).
4. The meter will automatically select the proper range.
5. Wait until the reading is stable (about 6 seconds) and then press the READ button.
W
RS
Figure 13
C. The power clamp sums the
two values, displays the result, and stores the 1φ3W power measurement in memory. Note the following equation:
W
1
φ3W
= W
RST
= W
RS(L1G)
+ W
TS(L2G)
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Current and Voltage Measurements
AC, DC, and AC+DC Voltage Measurements
Hz
HOLD
V
1000A
KW
OFF
3 3W
3 4W
Hz
V
600V MAX CAT
Figure 14
Warning:
The maximum input is 600V. Do not attempt to take voltage measurements that exceed this limit; electrical shock and damage to the clamp meter can result.
1. Set the rotary switch to the 'V' position (refer to figure 14).
2. Insert the test leads into the input terminals (black lead to COM and red to '+').
3. Connect the probe ends of the test leads in PARALLEL to the circuit to be measured.
4. The meter will automatically select the appropriate range and units (AC or DC).
5. Read the voltage and frequency values displayed on the LCD.
Note:
The sensitivity for frequency measurements is 10V. The frequency range is 45 –
500Hz. If the frequency is less than 45 Hz, the LCD will display "------".
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AC, DC, and AC+DC Current Measurements
A
HOLD
Hz
1000A
V OFF
KW
3 3W
3 4W
Hz
A
Hz
A
600V CAT
600V MAX CAT
Figure 15
1.
Set the rotary switch to the '1000A' position (refer to figure 15).
2.
For DC, press and hold the ZERO button until a beep is heard to zero the reading; the LCD will display “- - - -” while zeroing.
3.
Press the trigger to open the jaw.
4.
Fully enclose the conductor to be measured. Do not allow a gap between the two jaw halves when measuring.
5.
The clamp will automatically select the appropriate range.
6.
Read the current and frequency values displayed on the LCD.
Note:
The current sensitivity for frequency measurements is 10A. The frequency range is 45 - 500Hz. If the frequency is less than 45 Hz, the LCD will display "------"
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Resistance and Continuity Measurements
Warning:
Before taking any in-circuit resistance measurements, remove power from the circuit under test and discharge all capacitors.
1.
Set the function switch to the Ω position for both resistance and continuity measurements.
2.
Connect the black test lead to the COM terminal and the red test lead to the '+' terminal.
3.
Connect the test leads to the circuit being measured and read the displayed resistance value.
Refer to Figure 16.
4.
For Continuity measurements, an audible tone will sound when the reading is below 50Ω.
Hz
HOLD
V
1000A
KW
3 3W
3 4W
OFF
600V MAX CAT
K
Figure 16
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Diode and Continuity Measurements
1. Connect red test lead to the "+" terminal and black test lead to the "COM" terminal.
2. Set the range switch to the diode test position " ".
3. Connect the red test lead to the anode side and black test lead to the cathode side of the diode being tested.
4. Read the forward voltage value on LCD. The value for a good diode is 0.3VDC for germanium diodes and 0.7VDC for silicon diodes.
5. If the test lead connection is reversed, the digital reading should reflect an open circuit condition if the diode is good.
6. Continuity measurement: When the reading is below 50mV an audible tone will sound.
MIN/MAX Recording
1. Set the Function Switch to the Voltage or Current position.
2. To record and view MIN and MAX values while taking measurements, press the MIN MAX button.
3. Now while measurements are being taken, the display only the MIN or the MAX reading. Use the MIN MAX button to toggle between MIN and MAX readings. The LCD will display MIN or
MAX as selected.
4. To exit this mode, press and hold the MIN MAX button until the MIN and MAX display icons disappear from the LCD.
Peak Detection
Peak Detect mode is used to capture fast transients signals (to 0.1ms) such as those caused by motor startup surges or arc welding equipment switching.
1. Set the Function Switch to the Current or Voltage position.
2. Engage the Peak detector by pressing and holding the READ button until a short beep is heard.
(Note that if the button is held longer, a longer beep will sound and the meter will be in the datalogging view mode; refer to the datalogging section for more info).
3. The LCD will display 'P-P+' when the Peak Detect mode is accessed correctly. Use the PEAK button to toggle between ' P+ Max' (captures positive polarity peaks) and 'P- MIN' (captures negative polarity peaks).
4. To exit the Peak mode, press and hold the PEAK button for two seconds (until the P- and P+ icons disappear).
5. Take a Voltage or Current measurement on a transient signal and the display will show the peak of the pulse. The fastest surge the meter can detect is 0.1ms.
Data Hold
1. To freeze a displayed reading, press the HOLD key.
2. The HOLD icon will appear on the top of the LCD to let the user know that the meter is in the
Data Hold mode.
3. To return the meter to the normal operation mode, press the HOLD key again. The HOLD icon will extinguish.
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Datalogging
Single mode
1. Single mode datalogging records one reading at a time.
2. To record one reading, press the RECORD key until one beep heard. (Note that if the button is held longer, 2 beeps will sound and the meter will be in continuous mode; see below). The record number (1 through 25 or FULL) will briefly appear on the LCD.
3. The meter can store up to 25 readings. When the memory is full, FULL will display.
4. To view the readings, press and hold the READ button until two tones are heard. The second tone is longer and louder than the first.
5. Now use the yellow and keys to scroll through the recorded readings.
Continuous mode (for use with PC interface only)
1. In continuous mode the meter records one reading after another automatically. Up to 4000 records can be recorded.
2. Press and hold the RECORD until two tones are heard (not available in 3φ3W and 3φ4W function positions). The meter will begin recording data and the RECORD icon will appear on the LCD.
3. To exit the Record mode, press and hold the RECORD button until the RECORD display icon disappears.
4. Readings can only be transferred to a PC with optional Windows® software and interface cable.
Instructions for use are provided with optional software/hardware kit.
Clearing Datalog Data
1. Turn the meter off and hold down the RECORD button while turning the meter on.
2. Release the RECORD key when CLR appears. The datalog memory is now clear.
Maintenance
Battery Replacement
Warning:
To prevent electrical hazard or shock, turn off the clamp meter and disconnect the test leads before removing the back cover.
When the 9V battery expires, the LCD will display the battery icon. To replace the battery:
1. Set the Range switch to the OFF position.
2. Remove the meter's three rear screws and carefully open the meter housing.
3. Replace the 9V battery and re-assemble the meter housing.
Cleaning
Periodically wipe the case with a dry cloth; do not use abrasives or solvents.
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