Hioki CM3289 User Manual
AC CLAMP METER CM3289
5 Commonwealth Ave
Woburn, MA 01801
Phone 781-665-1400
Free 1-800-517-8431
Toll
φ33 mm
Visit us at www.TestEquipmentDepot.com
Quickly clamp
wires in even more
conned spaces!
Featuring the same convenient functionality and reliable performance…
Introducing the successor to the
AC Clamp Meter 3280-20F
A new sensor prole yieldsA new sensor prole yields
outstanding ease of useoutstanding ease of use
Conventional clamp meter
Too big to tToo big to t
CM3289
13mm13mm
actual size
Slides right
through
Use in even more applications with an optionalUse in even more applications with an optional
exible sensor. Measure both wires in connedexible sensor. Measure both wires in conned
spaces and thick wires with a single instrument.spaces and thick wires with a single instrument.
AC FLEXIBLE CURRENT SENSOR CT6280
Φ130 mmΦ130 mm
4200 A AC4200 A AC
-25˚C to 65-25˚C to 65˚C˚C
Testers are built tough to Testers are built tough to
withstand a 1-meter drop withstand a 1-meter drop
onto a concrete ooronto a concrete oor
Fits in your pocket
Broad operating temperature range
Measurement
parameters
Mechanically robust design
All in formation cor rect as of Ju ne 19, 2020. Al l speci cation s are subje ct to change withou t notice. CM3289E3-06M Printed in Japan
Note: Company names and product names appearing in this catalog are trademarks or registered trademarks of various companies.
Essential equipment for professional electricians: Measure current and voltage with a single instrument
VoltageCurrent
Resistance
Specications
AC measurement method
Core jaw diameter φ33 mm (1.30"), jaw thickness: 8.3 mm (0.33")
Max. rated voltage
to earth
AC Current
Frequency characteristics
AC Voltage 4.200 V to 600 V, 4 ranges (±1.8% rdg ±7 dgt )
Frequency characteristics
DC Voltage 420.0 mV to 600 V, 5 ranges (±1.0% rdg ±3 dgt)
Resistance 420.0 Ω to 42.00 MΩ, 6 ranges (±2.0% rdg ±4 dgt)
Continuity Check
Crest factor
Display refresh rate 400 ms
Continuity Check
Basic ac curac y gure s for measurement ranges a re indicated i n paren theses .
Accur acy gu arant eed for 1 yea r, Post-adju stment a ccuracy gua ranteed for 1 yea r, Produc t warr anty pe riod is 3 ye ars.
True RMS
Jaw : CAT IV 300 V, CAT III 600 V
Voltage measurement terminal: CAT III 300 V, CAT II 600 V
42.00 A/ 420.0 A/ 1000 A
(guaranteed accuracy range: 4.00 A to 1000 A, ±1.5% rdg ±5 dgt)
40 Hz to 1 kHz
45 Hz to 500 Hz
420.0 Ω (±2.0% rdg ±4 dgt)
Threshold of buzzer sound 50 Ω±40 Ω or less
For 2500 counts or less 2.5,
Linearity reduced to 1.5 or less at 4200 counts
Included test leads come
with caps to prevent
inadvertent short-circuits.
Large currents
4200 A AC
[Option]
AC FLEXIBLE CURRENT SENSOR
CT6280
In small spaces Freely bendable
Operating temperature
and humidity
Storage temperature
and humidity
Drop-proof distance 1 m onto concrete
Standards Safety : EN 61010, EMC : EN 61326
Functions Data hold, Auto power-saving function
Power supply Coin type lithium battery CR2032×1
Continuous use 70 hours
Dimensions and mass
AC FLEXIBLE CURRENT SENSOR CT6280 specications
Core jaw diameter
AC Current 420.0 A/ 4200 A (±3.0% rdg.±5 dgt.)
Cable length 800 mm (31.5")
Large-diameter loop is ideal for
measuring large wires and pairs of wires
Easy attachment
Attachment for easier
routing between wires
−25°C to 65°C (−13°F to 149°F),
80% RH or less (no condensation)
−25°C to 65°C (−13°F to 149°F),
80% RH or less (no condensation)
57W×181H×16D mm (2.24"W × 7.13"H × 0.63"D), 100 g (3.5 oz.)
φ130 mm (5.12") (Cable cross-section diameter: 5 mm (0.20"),
tip cap diameter: 7 mm (0.28"))
Store everything in the
bundled Carrying Case C0205
Order code/ Options
Model:
Model No. (Order Code) (Note)
CM3289
Bundled accessories
Carrying Case 9398
Test Lead L9208
Coin type lithium battery CR2032
Instruction Manual
Operating Precautions
TEST LEAD L9208
CARRYING CASE 9398
AC FLEXIBLE CURRENT SENSOR CT6280
(optional, includes C0205 and attachment)
CARRYING CASE C0205
(optional, for storing the CT6280, L9208 and main body)
TEST LEADS HOLDER 9209
(optional, one end of each test lead is xed to rear of case.)
CONTACT PIN SET L4933* (optional)
SMALL ALLIGATOR CLIP SET L4934* (optional)
AC CLAMP METER CM3289
True RMS
*Probe tips can be used on TEST LEAD L9208.
CT6280CT6280
92099209
L4933L4933
L4934L4934
About AC measurement
There are two methods for converting current into RMS values: the mean
method (mean rectification RMS value indication) and the true RMS
method (true RMS value indication).
Although both methods yield the same value for undistorted sine waves,
distortion of the waveform causes the values to diverge.
True RMS method (True RMS)
The waveform including harmonic components is calculated according to an RMS calculation
formula and displayed.
True RMS measurement yields accurate display values even when measuring a distorted
waveform, for example from an inverter-equipped device or switching power supply.
MEAN method (MEAN value)
The input waveform is treated as an undistorted sine wave (single frequency only). The AC signal mean is calculated, converted to an RMS value, and displayed.
The measurement error increases when the waveform is distorted.
Comparing distorted current values from an inverter, etc.
■
Current waveform fromCurrent waveform from
an inverter (primary side)an inverter (primary side)
For MEAN method measurement
Rugged & Compact
MEAN method
(3280-10F)
In fact, this
much current
is owing!
True RMS method
(CM3289)
AC CLAMP METER 3280-10F
■ AC Current (1000 A AC), AC Voltage, Resistance
■ Also accepts exible current sensor for measuring
large currents/thick wires.
5 Commonwealth Ave
Woburn, MA 01801
Phone 781-665-1400
Toll
Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
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