Hioki 3280-1 OF User manual

3280-20F
AC CLAMP METER
3280-10F
Instruction Manual
May 2016 Edition 1
3280H981-00 (H980-00) 16-05H
5 Commonwealth Ave
Woburn, MA 01801
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

Measure-1
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CT6280
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3280H981-00

Measure-2
OK NO
NO NO
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EN-i
Contents
Introduction..............................................1
Safety Notes.............................................1
Inspection Before Measurement............8
Maintenance/Inspection..........................9
Insert/Replace Batteries..........................9
Functions ...............................................10
Parts Names...........................................11
Specifications........................................13
General Specifications ..........................13
Basic Specifications ..............................15
Function Specifications .........................17
Accuracy Specifications ........................17
3280H981-00

EN-ii
Contents

EN-1
Introduction
Introduction
Thank you for purchasing the Hioki 3280-10F,
3280-20F AC Clamp Meter. To obtain maximum
performance from the instrument, please read this
manual first, and keep it handy for future reference.
3280-10F Average value measurement RMS conversion
model
3280-20F True RMS measurement model
Safety Notes
This instrument is designed to conform to IEC 61010
Safety Standards, and has been thoroughly tested
for safety prior to shipment. However, using the
instrument in a way not described in this manual
may negate the provided safety features. Before
using the instrument, be certain to carefully read the
following safety notes.
Notation
In this document, the risk seriousness and the
hazard levels are classified as follows.
DANGER Imminent risk of operator death
or serious injury
WARNING Potential for operator death or
serious injury
CAUTION Potential for minor operator
injury or device damage or
malfunction

EN-2
Safety Notes
Risk of electric shock
Prohibited actions
Actions that must be performed
Symbols affixed to the device
Precaution or hazard (See corresponding
topic.)
Risk of electric shock
Protected throughout by double insulation
or reinforced insulation
Device may be connected to or
disconnected from a live conductor
Flexible sensors can be connected to or
disconnected from live conductors when
using appropriate protective insulation.
Other sensors can only be connected to
or disconnected from insulated conductors
suited to the voltage of the conductor under
measurement.
Grounding terminal
DC (direct current)
AC (alternating current)

EN-3
Safety Notes
Measurement categories
This instrument’s current measurement part
conforms to the safety requirements for CAT III 600 V,
and the voltage measurement part conforms to the
safety requirements for CAT II 600 V, CAT III 300 V
measuring instruments.
Service entrance
Distribution panel
Service drop Internal wiring
Power meter
Fixed Installation
Outlet
CAT IV CAT III CAT II
DANGER
Measuring a location with a higher
category number than the measurement
category indicated on this device may
result in a serious accident such as
electric shock.
To avoid electric shock, do not touch
the portion beyond the protective
barrier during use.
Never apply voltage to the test leads
when the resistance and continuity
functions are selected. Doing so may
damage the instrument and result
in bodily injury. To avoid electrical
accidents, remove power from the
circuit before measuring.

EN-4
Safety Notes
WARNING
•To avoid electric shock, short circuits
and damage to the instrument,
disconnect the test leads from the
measurement object before switching
the rotary switch.
•To prevent electric shock, when
measuring the voltage of a power
line use a test lead that satisfies the
following criteria:
•Conforms to safety standards
IEC61010 or EN61010
•Of measurement category III or IV
•Its rated voltage is higher than the
voltage to be measured
•The optional test leads for this
instrument conform to the safety
standard EN61010. Use a test lead
in accordance with its defined
measurement category and rated
voltage.

EN-5
Safety Notes
WARNING
•Installing the instrument in
inappropriate locations may cause
a malfunction of instrument or may
give rise to an accident. Avoid the
following locations:
•Exposed to direct sunlight or high
temperature
•Exposed to corrosive or combustible
gases
•Exposed to a strong electromagnetic
field or electrostatic charge
•Near induction heating systems
(such as high-frequency induction
heating systems and IH cooking
equipment)
•Susceptible to vibration
•Exposed to water, oil, chemicals, or
solvents
•Exposed to high humidity or
condensation
•Exposed to high quantities of dust
particles

EN-6
Safety Notes
WARNING
•Since there is a risk of electric shock,
check that the insulation on the test
lead and flexible sensor (optional)
are neither ripped nor torn, and no
metal conductor inside the wire are
exposed before using the instrument.
If damaged, replace them with those
specified by our company.
•To prevent a short circuit accident,
be sure to use the test leads with the
sleeves attached when performing
measurements in the CAT III
measurement category.
•If the sleeves are inadvertently
removed during measurement, stop
the measurement.
•With regard to the electricity supply,
there are risks of electric shock, heat
generation, fire, and arc flash due to
short circuits. If persons unfamiliar
with electricity measuring instrument
are to use the instrument, another
person familiar with such instruments
must supervise operations.
•This instrument is measured on a
live line. To prevent electric shock,
use appropriate protective insulation
and adhere to applicable laws and
regulations.
•Handle and dispose of batteries in
accordance with local regulations.

EN-7
Safety Notes
CAUTION
Do not place foreign objects between the
jaw tips (or flexible loop couplings) or insert
foreign objects into the gaps of the jaws
(or flexible loop couplings). Doing so may
worsen the performances of the sensor or
interfere with clamping action.
Poor performance or damage from battery
leakage could result. Observe the cautions
listed below:
• Do not use batteries after their
recommended expiry date.
• Do not allow weak batteries to remain in
the instrument.
• Replace batteries only with the specified
type.
• Remove the batteries from the instrument
if it is to be stored for a long time.
•The indicator lights up when the
remaining battery capacity is low. In this case,
the instrument's reliability is not guaranteed.
Replace the battery immediately.
•To avoid battery depletion, turn the rotary switch
OFF after use (the auto power save feature
consumes a small amount of current).

EN-8
Inspection Before Measurement
Inspection Before Measurement
•Verify that the instrument operates normally to
ensure that no damage occurred during storage
or shipping. If you find any damage, contact your
authorized Hioki distributor or reseller.
•If damage is suspected, check the section below
before contacting your authorized Hioki distributor
or reseller.
1
Check that the test lead is not broken.
Replace with the specified L9208 Test Lead.
2
Check that the resistance measurement and
continuity test operates normally.
Have the instrument repaired by the your
authorized Hioki distributor or reseller. The
instrument may have been subject to a voltage
of greater than 600 V during resistance
measurement or continuity testing.
3
Check that the battery voltage is not low.
Replace the batteries.

EN-9
Maintenance/Inspection
Maintenance/Inspection
Cleaning
•Measurements are degraded by dirt on the mating
surfaces of the jaw (or flexible loop coupling), so
keep the surfaces clean by gently wiping with a
soft, dry cloth.
•To clean the device, wipe it gently with a soft cloth
moistened with water or mild detergent.
•Wipe the LCD display gently with a soft, dry cloth.
Insert/Replace Batteries
Necessary tool: Phillips screwdriver and CR2032 Coin-shaped
lithium battery
NO
OK
1234
Do not turn the adjustment screw inside the
battery case. Doing so will cause the instrument to
report abnormal measured values.
CALIFORNIA, USA ONLY
This product contains a CR Coin Lithium Battery
which contains Perchlorate Material - special
handling may apply.
See www.dtsc.ca.gov/hazardouswaste/perchlorate

EN-10
Functions
Functions
Auto power-saving function
Display will automatically turn off if the instrument
is not used for 30 min.
To resume instrument operation in the previous state, select
the “OFF” position with the rotary switch and then move the
switch to the desired function.
To cancel auto power-saving function
1. Select the desired function with the rotary switch while
holding down key.
2. The LCD display will change from [APS] to [OFF], and
the auto power-saving function will be disabled.
3.
Setting the rotary switch to “OFF” and then reselecting the
desired function will enable the auto power-saving function.
Auto-range function
Automatically sets the measurement range to the
most appropriate range.
Displays [AUTO]
Manual-range function
To set the measurement range arbitrarily.
1. Select the desired function with the rotary switch while
holding down key.
2. Press key to switch the range.
(Can set the range as desired, except during continuity
testing.)
Overflow indication
Indication when input exceeds the measurement range.
Displays [OF] or [-OF]

EN-11
Parts Names
Parts Names
RearFront
Jaw
Barrier
Operation grip
LCD Display
Rotary switch
key
HOLD key
(Press to hold the
display value.)
y
h
Test lead or flexible sensors plug
Example: 3280-10F
Measurement
terminal Battery cover
Sleeves (Red)
(Black)
Test leads

EN-12
Parts Names
AC Flexible Current Sensor (optional)
Cap
(Approx. 7 mm)
Cap
Flexible loop
Instruction
plate