Triplett CM450-NIST User Manual

User Manual
CM400
400A TRMS AC Clamp Meter
Introduction
Congratulations on your purchase of the Triplett CM400 400A True RMS AC
Clamp meter. The CM400 True RMS AC Clamp meter features:
 AC Current measurements up to 400A.
 Variable Frequency Drive (VFD) Voltage Measurements
 Inrush Current Mode
 Temperature Measurements
 Non-contact AC voltage detection
 Auto Power OFF
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Safety
International Safety Symbols
This symbol, adjacent to another symbol or terminal, indicates the
user must refer to the manual for further information.
This symbol, adjacent to a terminal, indicates that, under normal use,
hazardous voltages may be present
Double insulation
SAFETY NOTES



Do not exceed the maximum allowable input range of any function.
When the instrument is not in use, press the ON/OFF key to turn off the
meter.
Remove the battery if meter is to be stored for longer than 60 days.
CAUTIONS





Improper use of this meter can cause damage, shock, injury or death.
Read and understand this user manual before operating the meter.
Always remove the test leads before replacing the battery.
The meter itself for any damage before operating the meter. Repair or
replace any damage before use.
Use great care when making measurements if the voltages are greater
than 25VAC rms or 35VDC. These voltages are considered a shock
hazard.
Voltage checks on electrical outlets can be difficult and misleading
because of the uncertainty of connection to the recessed electrical
contacts. Other means should be used to ensure that the terminals are
not “live”.
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Description
Meter Description
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
NCV (Non-Contact Voltage) Sensor
Current Clamp
NCV (Non-Contact Voltage) Indicator LED
Clamp Trigger
Rotary Function Switch
LCD Display
Data HOLD/Flashlight Button
REL/Backlight Button
Range Button
MODE and VFD Button
PEAK and INRUSH Button
Flashlight
Battery Cover
COM Input Jack (-)
Positive Input Jack (+)
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Display Icons Description
1. REL/ ZERO Button
2. Alternating Current/Voltage
3. Direct Current/Voltage
4. Minus Sign
5. Low Battery
6. Auto Range Mode
7. INRUSH Current Mode
8. Display Hold
9. MAX/MIN Mode
10. Variable Frequency Drive (VFD) Voltage Value
11. Diode Test
12. Continuity Test
13. Auto Power Off (APO)
14. Faranheit and Celcius Units (Temperature)
15. Units of Measure Prefixes
16. Hertz (Frequency)
17. Percent (%) Duty Cycle
18. Measurement Display Digits
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Operation
AC Current Measurements
*NOTE: Ensure that the test leads are disconnected from the meter before
making current clamp measurements.*
1.
2.
3.
4.
5.
6.
Set the Function switch to the 400A range. If the approximate range of
the measurement is not known, select the highest range then move to
lower ranges if necessary.
Press the REL button to zero the meter display.
Use rotary function switch to select 40A AC or 400A AC range.
Select AC current Test, press the INRUSH/PEAK Button to turn Inrush
current test, the LCD will display “----”.
Press the trigger to open jaw, Fully, enclose only one conductor, For
optimum results, center the conductor in the jaw.
The clamp meter LCD will display the reading.
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AC Voltage Measurements
1.
2.
3.
4.
5.
6.
Insert the black test lead into COM input jack and the red test lead into
the Positive input jacks.
Set the function switch to the VAC position.
Press the MODE/VFD Button for 1 second to turn on the VFD test.
Press the INRUSH/PEAK Button to turn on PEAK test.
Connect the test leads in parallel to the circuit under test.
Read the voltage measurement on the LCD display.
DC Voltage Measurements
1.
2.
3.
4.
Insert the black test lead into COM input jack and the red test lead into
the Positive input jacks.
Set the function switch to the VDC position.
Connect the test leads in parallel to the circuit under test.
Read the voltage measurement on the LCD display.
Resistance Measurements
1.
2.
3.
4.
Insert the black test lead into the COM input jack and the red test lead
into the Positive input jacks.
Set the function switch to the ΩCAP position.
Touch the test probe tips across the circuit or component under test.
Read the resistance on the LCD display.
Continuity Measurements
1.
2.
3.
4.
5.
Insert the black test lead into the COM input jack and the red test lead
into the Positive input jacks.
Set the function switch to the “
” position.
Use the MODE Button to select continuity “ ”, The display icons will
change when the MODE Button is pressed.
Touch the test probe tips across the circuit or component under test.
If the resistance is <50Ω, a tone will sound.
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Capacitance Measurements
WARNING: To avoid electric shock, discharge the capacitor under test before
measuring.
1. Set the function switch to the ΩCAP position.
2. Insert the black test lead into the COM input jack and the red test lead
into the Positive input jacks.
3. Touch the test probe tips across the part under test, If “OL” appears in
the display, remove and discharge the component.
Read the capacitance value in the display.
4.
The display will indicate the proper decimal point and value.
Frequency Measurements
1.
1.
2.
3.
4.
5.
Insert the black test lead into the COM input jack and the red test lead
into the Positive input jacks.
Set the function switch to the VAC Hz/% Position.
Press MODE Button to select the Frequency (Hz) or Duty Cycle (%).
Touch the test probe tips across the part under test.
Read the value on the display.
The display will indicate the proper decimal point and value.
Temperature Measurements
1.
2.
3.
4.
5.
Set the function switch to the TEMP position.
Insert the Temperature Probe into the negative COM and Positive jacks,
observing polarity.
Touch the Temperature Probe head to the device under test, Continue to
touch the part under test with the probe until the reading stabilizes.
Read the temperature on the display, The digital reading will indicate the
proper decimal point and value.
Use the MODE Button to select °C or °F.
WARNING: To avoid electric shock, be sure the thermocouple probe has
been removed before changing to another measurement function.
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Diode Measurements
1.
2.
3.
4.
5.
6.
Insert the black test lead into the COM input jack and the red test lead
into the Positive input jacks.
Turn the function switch to “
” position.
Use the MODE Button to select the diode function if necessary (Diode
symbol will appear on the LCD when in Diode test mode)
Touch the test probe tips to the diode or semiconductor junction under
test. Note the meter reading.
Reverse the test lead polarity by reversing the red and black leads, Note
this reading.
The diode or junction can be evaluated as follows:

If one reading displays a value (Typically 0.400V to 0.900V) and the
other reading displays “OL”, the diode is good.

If both readings display “OL” the device is open.

If both readings are very small or ‘0’, the device is shorted.
Non-Contact Voltage (NCV) Measurements
WARNING: Risk of Electrocution, always test the Voltage Detector on a
known live circuit to verify proper operation before use.
1.
2.
Touch the probe tip to the hot conductor or insert into the hot side of the
electrical outlet.
If AC voltage is present, the detector light will illuminate.
Note: The conductors in electrical cord sets are often twisted. For best results,
rub the probe tip along a length of the cord to assure placing the tip in close
proximity to the live conductor.
Note: The detector is designed with high sensitivity. Static electricity or other
sources of energy may randomly trip the sensor. This is normal operation.
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Function Buttons
MODE and VFD Button
Short Press the MODE/VFD Button to toggle between modes available for the
rotary switch position (V/Hz/%)
• Long Press and Hold the MODE/VFD while POWERING ON will disable the
Auto Power OFF (APO) Function
• Long Press and hold MODE/VFD will engage VFD measuring mode.
•
HOLD and Flashlight Button
To freeze the LCD reading, press the Hold/Flashlight Button.
While data hold is active, the “H” icon appears on the LCD.
Press the Hold/Flashlight Button again to return to normal operation.
The LCD is equipped with backlighting for easier viewing, especially in dimly lit
areas.
• Press the Hold/Flashlight Button to turn the Flashlight on, Press again to turn
the Flashlight off.
•
•
•
•
Range Button
•
•
•
•
•
•
Press the RANGE Button to activate the manual mode and to disable the
Autorange function, The symbol “AUTO” disappears from the upper left part
of the display.
In manual mode, press the RANGE Button to change measuring range, the
relevant decimal point will change its position.
The RANGE Button is not active in positions , ,CAP,Hz%,Temp °C °F .
In Autorange mode, the instrument selects the most appropriate ratio for
carrying out measurement.
• If a reading is higher than the maximum measurable value, the indication
“O.L” appears on the display.
Press and hold the RANGE Button for more than 1 second to exit the manual
mode and restore the Autorange mode.
PEAK/ INRUSH Button
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•
•
In AC voltage test mode, Press PEAK/INRUSH Button the Peak maximum
and Peak minimum values are measured.
In current test mode, Press PEAK/INRUSH Button the Inrush current values
are measured.
Relative/Backlight Button
The relative measurement feature allows you to make measurements relative
to a stored reference value, A reference voltage, current, Capacitance etc. can
be stored and measurements made in comparison to that value, The displayed
value is the difference between the reference value and the measured value.
•
•
•
•
•
•
•
Press the “REL/Backlight” Button to zero the display “ ” will appear in the
display.
To exit this mode, press the “REL/Backlight” Button again, and “ ” will
disappear in the display.
DC voltage measurement mode, Press the “REL/Backlight” Button to “zero”
the display.
Press and hold the the “REL/Backlight” Button to turn the Backlight on, Press
and hold again to turn the Backlight off.
Relative/Backlight Button
In order to conserve battery life, the meter will automatically turn off after
approximately 15minutes.
To turn the meter on again, turn the function switch to the OFF position and
then to the desired function position.
To press and hold the MODE/VFD Button to turn the system on, the auto
power off function will be cancelled.
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Maintenance
WARNING: To avoid electrical shock, disconnect the meter from any circuit,
remove the test leads from the input terminals, and turn OFF the meter before
opening the case. Do not operate the meter 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 battery and store it separately.
Battery Replacement
1. Remove the Phillips head screw that secures the rear battery door
2. Open the battery compartment.
3. Replace the 1.5V x 3 “AAA” batteries.
4. Secure the battery compartment.
Type K Temperature Probe Replacement
Note: To use a Type K thermocouple probe that is terminated by a
subminiature (Flat blade) connector, a subminiature-to-banana plug adaptor is
required.
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Specifications
Note: Accuracy is given as ±(% of reading + counts of least significant digit) at 23 oC /±5 ,
with relative humidity less than 80%RH.
Function
Range
Resolution Accuracy ±(% of
reading+digits)
AC True RMS
40.00A
10mA
±2.0% of rdg ± 8 digits
Current
400.0A
100mA
±2.5% of rdg ± 8 digits
Over rang protection: Maximum input 400A;
Accuracy specified from 5% to 100% of the measuring range;
Frequency Response: 50Hz to 60Hz True RMS;
Inrush current Maximum Input: 400A; Inrush current Sensitivity: >2A.
AC True RMS
4.000V
1mV
Voltage (with
40.00V
10mV
±1.2% of rdg ± 5 digits
VFD)
400.0V
100mV
1000V
1V
±1.5% of rdg ± 5 digits
Variable frequency drive test AC voltage rang: 100V-600V.
AC voltage bandwidth:50 to 1000Hz(Sine); 50/60(All wave).
Accuracy specified from 5% to 100% of the measuring range.
Maximum Input: 1000V ac rms. PEAK Maximum Input: 1000V.
DC Voltage
4.000V
1mV
40.00V
10mV
±1.0% of rdg ± 3 digits
400.0V
100mV
1000V
1V
±1.2% of rdg ± 3 digits
Maximum Input: 1000V dc
Resistance
400.0Ω
0.1Ω
±1% of rdg ± 4 digits
4.000kΩ
1Ω
40.00kΩ
10Ω
±1.5% of rdg ± 2 digits
400.0kΩ
100Ω
4.000MΩ 1kΩ
±2.0% of rdg ± 5 digits
40.00MΩ 10kΩ
±3% of rdg ± 8 digits
Input Protection: 300V dc or 300V ac rms.
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Function
Range
Resolution Accuracy ±(% of
reading+digits)
Capacitance
99.99nF*
0.01nF
±4.5% of rdg ± 20 digits
(Auto-Ranging)
999.9nF
0.1nF
9.999µF
0.001µF
99.99µF
0.01µF
±3.0% of rdg ± 5 digits
999.9µF
0.1µF
9.999mF
0.001mF
99.99mF
0.01mF
±5% of rdg ± 5 digits
Input Protection: 300Vdc or 300V ac rms. *< 99.99nF(No specification)
Frequency with Test 10Hz to 100kHz
±1.0% of rdg ± 5 digits
Leads (AC Voltage)
Input Protection: 1000V AC rms; Sensitivity: >15V AC rms.
Frequency
45Hz to 1kHz
±1.0% of rdg ± 5 digits
(AC Current)
Sensitivity: >20A.
Duty Cycle
Temperature
20.0%~80.0% 0.1
±1.2% of rdg ± 10 digits
-20 to 1000°C 0.1/1°C
±3% of rdg ± 3°C
-4 to 1832°F 0.1/1°F
±3% of rdg ± 5°F
Sensor: Type K Thermocouple; Input Protection: 300V dc or 300V ac rms.
Function
Testing Condition
Reading
Diode
Forward DCA is
Forward voltage drop of
approx.1mA, open circuit Diode
Voltage MAX. 3V
Continuity
Test current MAX. 1.5mA Buzzer makes a long
sound,
While resistance is less
than(50Ω)
NCV Range
>90V
Inrush
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General Specifications
Clamp Jaw Opening
Display
Low Battery Indication
Over-Range Indication
Measurement Rate
Temperature Sensor
Input Impedance
AC Response
ACV Bandwidth
Operating Temperature
Storage Temperature
Operating Humidity
Storage Humidity
Operating Altitude
Battery
Battery Life
Auto Power Off
Safety
1.2” (30mm) approx
3-3/4 digits (4000 Counts) backlit LCD
“ ” is displayed
“OL” display
3 readings per second, nominal
Type K thermocouple
10MΩ(VDC and VAC)
True rms (AAC and
VAC) 2KHz
5 to 40°C (41 to 104°F)
-20 to 60°C (-4 to 140°F)
Max 80% up to 31°C(87°F) decreasing linearly to 50% at
40°C(104°F)
<80%
7000ft. (2000meters) maximum.
3 x 1.5V “AAA” Batteries
~30h (Backlight ON), ~100h (Backlight OFF)
After approx. 15 minutes
For indoor use and in accordance
with the requirements for double insulation to
EN 61010-1:2010+A1:2019,
EN 61010-2-032:2012, EN 61010-2-033:2012 Low Voltage
Directive 2014/35/EU
Overvoltage Category III 600V, Pollution
Degree 2
9.5oz (268.3g)
Weight
8.8 x 3.0 x1.5” (223.8 x76.5 x 39.4 mm)
Dimensions
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Warranty Information
Triplett / Jewell Instruments extends the following warranty to the
original purchaser of these goods for use. Triplett warrants to the
original purchaser for use that the products sold by it will be free from
defects in workmanship and material for a period of (1) one year from
the date of purchase. This warranty does not apply to any of our
products which have been repaired or altered by unauthorized persons
in any way or purchased from unauthorized distributors so as, in our
sole judgment, to injure their stability or reliability, or which have been
subject to misuse, abuse, misapplication, negligence, accident or which
have had the serial numbers altered, defaced, or removed.
Accessories, including batteries are not covered by this warranty
Copyright © 2020 Triplett
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