User Manual

3281, 3282
DIGITAL CLAMP ON HiTESTER
INSTRUCTION MANUAL
February 2007 Revised edition 10 Printed in Japan
3281A981-10 07-02H
Introduction
Inspection
Safety
DANGER
Indicates that incorrect operation presents an extreme hazard that could result in
serious injury or death to the user.
WARNING
Indicates that incorrect operation presents a significant hazard that could result in
serious injury or death to the user.
CAUTION
Indicates that incorrect operation presents a possibility of injury to the user or
damage to the product.
NOTE
Advisory items related to performance or correct operation of the product.
The symbol printed on the product indicates that the user should refer to a
corresponding topic in the manual (marked with the symbol) before using the relevant
function.
In the manual, the symbol indicates particularly important information that the user
should read before using the product.
Indicates a double-insulated device.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Indicates a grounding terminal.
Indicates that the instrument may be connected to or disconnected from a live circuit.
Precautions
DANGER
This product is designed to conform to IEC 61010 Safety Standards, and
has been thoroughly tested for safety prior to shipment. However,
mishandling during use could result in injury or death, as well as damage
to the product. Be certain that you understand the instructions and
precautions in the manual before use. We disclaim any responsibility for
accidents or injuries not resulting directly from product defects.
Do not use on the voltage
lines exceeding 600 Vrms.
Do not input voltage in the
resistance measurement,
continuity checking and tem-
perature measurement.
Do not use on the primary
side of the breaker.
WARNING
During current measure-
ment, do not connect the
test leads or temperature
probe to the product.
Avoid touching the exposed
metallic parts of the clamp
sensor while measuring volt-
age.
Do not input voltages ex-
ceeding 600 Vrms. (1000 V
max.)
Do not input voltage to the
temperature probe.
Do not use the unit with the
back casing removed.
Be sure to insert the battery
with the polarity correct.
Do not use when your
hands are wet.
Do not short circuit, re-
charge, disassemble or in-
cinerate batteries.
Battery
Short-circuiting
Disassembling
Handle and dispose of batteries in accordance with local regulations.
To avoid electric shock when measuring live lines, wear appropriate
protective gear, such as insulated rubber gloves, boots and a safety
helmet.
CAUTION
Do not use or store the prod-
uct where it is exposed to di-
rect sunlight, high tempera-
tures, high humidity, or con-
densation.
Do not input subject the
product to vibrations or
shocks.
Do not drop the product.
Do not use the cable or han-
dle portion of the probe at
higher than 70 (158 )or
lower than -10 (14 ).
Before using the product the first time, verify that it operates normally to ensure that
the no damage occurred during storage or shipping. If you find any damage,
contact your dealer or Hioki representative.
Before using the product, make sure that the insulation on the test leads is
undamaged and that no bare conductors are improperly exposed. Using the product
in such conditions could cause an electric shock. Replace the test leads and
probes with the specified Hioki Model 9207-10.
Do not use the unit if the battery is exhausted (when the mark lights in the
display area). Be sure to replace the exhausted battery with a new one.
When replacing the battery, make sure that the metal battery snap fitting is firmly
connected. If the metal fitting is loose, adjust it and recheck the connection. If it
isn't connected securely, the power may not be turned on, and a power may be
turned off during the use.
Names and Functions of Parts
3281（600 A）
3282（1000 A）
Clamp-on
sensor
Lever
Key switchs
Display (LCD)
Back casing
(back)
Voltagae and resistance
input terminal
Alternating current Fahrenheit
AUTO
Auto-ranging
Ω,kΩ
Resistance
SLOW
Display update:
approx. once per three seconds
Continuity
REC
Record function
Hz
Frequency
MAX
Maximum value
V
Voltage
MIN
Minimum value
A
Current
AVE
Average value = (maximum value
+ minimum value) / 2
RMS
True RMS value
min
One minute: one segment (bar
graph)
PEAK
Peak value
hour
One hour: one segment (bar
graph)
C.F.
Crest factor = Peak value /
Effective value
HOLD
Data hold Input over (bar graph)
APS
Auto power-off Battery consumption warning
Centigrade
Specification
Function Mode Range Accuracy (%rdg. +dgt.)
Muximum
permissible
input
AC current
(A)
RMS
(Effective
value)
30.00
40 to 1 kHz:
(1.0%rdg. +0.7%f.s.)
3281:
600 AAC
continuous
1000 A max.
3282:
600 AAC
continuous
1000 AAC (5
minutes)
1700 A max.
300.0
45 to 66 Hz: (1.0%+5)
40 to 45, 66 to 1 kHz: (1.5%+5)
600(1000)
Auto-ranging As per the above range
PEAK
(Peak
value)
30.0 40 to 1 kHz: (5%+5)
300 40 to 1 kHz: (3%+5)
600 (1000) 40 to 1 kHz: (3%+5)
Auto-ranging As per the above range
AC voltage
(V)
RMS
300.0/600
45 to 66 Hz: (1.0%+3)
40 to 45, 66 to 1 kHz: (1.5%+3)
600 VAC
continuous
1000 V max.
Auto-ranging
PEAK 300/600 40 to 1 kHz: (3%+5)
Crest factor 1.00 to 5.00 (10%+5)
See the currents
and voltages
above
Frequency (Hz)
Auto-ranging
(100.0/1000)
30 to 99.9 Hz: (0.3%+1)
95 to 1000 Hz: (1%+1)
Resistance (Ω)
Auto-ranging
(1000/10.00k)
10 to 10.00 kΩ: (1.5%+5)
Open terminal
voltage:
3 VDC max.
Overload
protection:
600 Vrms
Continuity 1000 Ω Buzzer at approx. 30 Ω or less
Temperature
-50 to 150 (2%+2)
Add the accuracy of the 9462
THERMISTOR TEMPERATURE
PROBE
Overload
protection:
600 Vrms
-58 to 302
Diameter of
measurable conductor
3281: 33 mm dia. max. (1.3"), 3282: 46 mm dia. max. (1.8")
Effect of conductor
position
At any position based on the center of the clamp sensor
3281: Within 4.0%, 3282: Within 1.0%
Effect of external
magnetic field
In an external magnetic field of 400 AAC/m
3281: 1.5 A max., 3282: 0.2 A max.
Function Record (displays the maximum (MAX), minimum (MIN) and
average (AVE) values in the AC current, AC voltage and
frequency measurements), data hold (holds the display), auto-
power off (approx. 10 minutes, the buzzer alarms just before
the product is powered off, can be extended and released),
buzzer (can be turned on or off)
Display LCD, digital (3000 counts), bar graph (35 segments)
Over range display: "
O.L.
"or" " (bar graph input over)
Battery consumption warning: " "
Data hold display: "HOLD"
Auto power-off display: "APS"
Units (A, V, Hz, Ω ,kΩ, , )
Zero suppressor: 5 counts max.
Display update rate Digital display: approx. twice per second,
SLOW: approx. once per 3 seconds,
FAST: approx. 4 times per second
Bar graph display: approx. 4 times per second (fixed)
Response time Current, voltage frequency: approx. 2.2 seconds
Resistance, temperature, continuity check: approx. 1.1 seconds
Range selection Auto-ranging/manual ranging (fixed range) selectable (excluding
the frequency, resistance, temperature and continuity check)
Circuit dynamic
(Crest factor)
2.5 max. (600 A (3281), 1000 A (3282), 600 V range: 1.7)
Dielectric strength 5312 VrmsAC(3281), 6880 VrmsAC(3282)/15 sec between the
case and input terminals, and the case and clamp core
Location for use Altitude up to 2000 m (6562 feet), Indoors
Standards applying
Safety
EMC
EN 61010
Measurement Category III (anticipated transient overvoltage
6000 V) Pollution Degree 2( 3281 )
Measurement Category IV (anticipated transient overvoltage
8000 V) Pollution Degree 2( 3282 )
EN 60529 IP40 (protected against access to hazardous parts
withawire)
EN 61326
Operating
temperature and
humidity range
0to40 (32 to 104 ), 80% RH max. (no condensation)
Temperature
characteristics
0.05 x accuracy specifications/ ( )at0to40 (32 to 104 )
Thank you for purchasing the HIOKI "HIOKI 3281, 3282 DIGITAL CLAMP ON
HiTESTER". To obtain maximum performance from the product, please read this manual
first, and keep it handy for future reference.
When you receive the product, inspect it carefully to ensure that no damage occurred
during shipping. In particular, check the accessories, panel switches, and connectors. If
damage is evident, or if it fails to operate according to the specifications, contact your
dealer or Hioki representative.
This manual contains information and warnings essential for safe operation of the
product and for maintaining it in safe operating condition. Before using the product, be
sure to carefully read the following safety notes.
The following symbols in this manual indicate the relative importance of cautions and
warnings.
Safety Symbols
 Measurement categories (Overvoltage categories)
This product conforms to the safety requirements for CAT III(3281), CAT IV(3282)
measurement products.
To ensure safe operation of measurement products, IEC 61010 establishes
safety standards for various electrical environments, categorized as CAT I to
CAT IV, and called measurement categories. These are defined as follows.
CAT I: Secondary electrical circuits connected to an AC electrical outlet
through a transformer or similar device.
CAT II: Primary electrical circuits in equipment connected to an AC electrical
outlet by a power cord (portable tools, household appliances, etc.)
CAT III: Primary electrical circuits of heavy equipment (fixed installations)
connected directly to the distribution panel, and feeders from the
distribution panel to outlets.
CAT IV: The circuit from the service drop to the service entrance, and to the
power meter and primary overcurrent protection device (distribution
panel).
Higher-numbered categories correspond
to electrical environments with greater
momentary energy, so a measurement
product designed for CAT III
environments can endure greater
momentary energy than one designed for
CAT II. Using a measurement product in
an environment designated with a higher-numbered category than that for
which the product is rated could result in a severe accident, and must be
carefully avoided. Never use a CAT I measuring product in CAT II, III, or IV
environments.The measurement categories comply with the Overvoltage
Categories of the IEC60664 Standards.
NOTE
Accurate measurement may be impossible in the presence of strong magnetic fields,
such as near transformers and high-current conductors, or in the presence of strong
electromagnetic fields such as near radio transmitters.
The 3281 and 3282 are different in the maximum range.
(3281: 600 A, 3282: 1000 A)
1. Measurement specification
(Accuracy guaranteed for one year at 23 5 (73 9 ), 80%RH or less.
Guaranteed accuracy period: 1 year, or opening and closing of the Clamp Sensor 10,000
times, whichever comes first.)
( ) in the current ranges: 3282
Maximum rated voltage to earth: Max. 600 Vrms
Accuracy is guaranteed for over 10% input of the range in current and voltage.
Temperature probe : 9462 (THERMISTOR TEMPERATURE PROBE)
Measurement range: -50 to 150
-58to302
Accuracy: -50 to 50 3 -58to62 6
50 to 100 4 62 to 182 8
100 to 150 5 182 to 302 10
2. General specifications