User Manual

3280-20
CLAMP ON HiTESTER
INSTRUCTION MANUAL
November 2006 Revised edition 10 Printed in Japan
3280E980-10 06-11H
Introduction
Inspection
Safety
DANGER
This instrument 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 instrument. 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 instrument defects.
Safety Symbols
The symbol printed on the instrument 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 instrument.
Indicates a double-insulated device.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Indicates both DC (Direct Current) and AC (Alternating Current).
Indicates a grounding terminal.
Indicates that the instrument may be connected to or disconnected from
alivecircuit.
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 instrument.
NOTE
Indicates advisory items related to performance or correct
operation of the instrument.
Notes on Operation
WARNING
During current measurement, to avoid an electric shock accident, do not connect the
test leads to the instrument.
To avoid electric shock, do not allow the instrument to get wet, and do not use it
when your hands are wet.
Do not attempt to adjust or repair the instrument with the case open and with
voltage being input. Such adjustments or repairs should only be made by a
technician who fully understands the dangers involved.
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 store or use the instrument where it could be exposed to direct sunlight, high
temperature or humidity, or condensation. Under such conditions, the instrument
may be damaged and insulation may deteriorate so that it no longer meets
specifications.
Accuracy
Function Range
Accuracy
*1
Max. input
current
40 to 45 Hz
*
2
45 Hz to 66 Hz
*
2
66 Hz to 1 kHz
*
2
ACA
( A)
42.00 A
420.0 A
1000 A
2.0% rdg.
5 dgt.
1.5% rdg.
5 dgt.
2.0% rdg.
5 dgt.
2000 A rms
continuous
Effect of conductor position: 5.0% (in any direction from sensor center)
Maximum rated voltage to earth: CAT III 600 V (Current measurement section)
Function Range Accuracy
*1
Input impedance
Max. input
voltage
ACV
( V)
4.200 V
42.00 V
420.0 V
600 V
2.3% rdg. 8 dgt.
(50-500Hz
*
2
)
11 MΩ 5%
10 MΩ 5%
10 MΩ 5%
10 MΩ 5%
600 V rms
DCV
( V)
420.0 mV
4.200 V
42.00 V
420.0 V
600 V
1.3% rdg. 4 dgt.
100 MΩ or over
11 MΩ 5%
10 MΩ 5%
10 MΩ 5%
10 MΩ 5%
600 V DC
Maximum rated voltage to earth: CAT III 300 V, CAT II 600 V (Voltage measurement section)
Function Range Accuracy
*1
Open terminal voltage
Overload
protection
Resistance
[Ω]
420.0 Ω
4.200 kΩ
42.00 kΩ
420.0 kΩ
4.200 MΩ
42.00 MΩ
2.0% rdg. 4 dgt.
2.0% rdg. 4 dgt.
2.0% rdg. 4 dgt.
2.0% rdg. 4 dgt.
5.0% rdg. 4 dgt.
10.0% rdg. 4 dgt.
3.4 V or less
0.7 V (typ.) 3.4 V or less
0.47 V (typ.) 3.4 V or less
0.47 V (typ.) 3.4 V or less
0.47 V (typ.) 3.4 V or less
0.47 V (typ.) 3.4 V or less
250 V rms
Continuity
[ ]
420.0 Ω
2.0% rdg. 6 dgt.
(Threshold level
50 Ω 30 Ω )
3.4 V or less
250 V rms
Specification
LCD panel 4199 maximum display value
Out of range indication OF or -OF
Battery low warning
Data hold indication
Zero suppression 5 count or less (current measurement only)
Display update rate FAST 400 ms 25 ms
SLOW 3.2 s 0.2 s
Range switching Auto range / Manual range
Crest factor 2.5 or less (1.5 or less : maximum display value of range)
Withstand voltage 3536 VrmsAC sine wave (for 15 seconds ) between case and circuit
5312 VrmsAC sine wave (for 15 seconds ) between clamp sensor and case
5312 VrmsAC sine wave (for 15 seconds ) between clamp sensor and circuit
Location for use Altitude up to 2000 m (6562 feet), indoors
Maximum conductor
diameter for measurement
φ33 mm (1.30") or less
Temperature and humidity
for guaranteed accuracy
0to40 (32 to 104 ), 80%RH max (no condensation)
Guaranteed accuracy period 1 year, or opening and closing of the Clamp Sensor 10,000 times,
whichever comes first
Operating temperature and
humidity
0to40 (32 to 104 ), 80%RH max (no condensation)
Storage temperature -10 to 50 (14 to 122 ) (no condensation)
Temperature characteristics In 0 to 40 (32 to 104 ) range: 0.1 x Measurement accuracy / ( )
Power supply Rated supply voltage 3 V DC x 1 CR2032 x 1 Lithium battery
Maximum rated power 15 mVA
Continuous operating time Approx. 50 hours min. (in AC current measurement mode, continuous, no
load)
Dimensions and mass Approx. 57W x 175H x 16D mm, approx. 100 g
Approx. 2.24"W x 6.89"H x 0.63"D, approx. 3.5 oz.
Drop proof One meter to concrete
Accessories Instruction Manual, 9398 CARRYING CASE, 9208 TEST LEADS
Options 9209 TEST LEADS HOLDER
Applicable standards Safety:
EMC:
EN61010
Current measurement section: Measurement Category CAT III 600 V
Pollution Degree 2 (anticipated transient overvoltage 6000 V)
Voltage measurement section: Measurement Category CAT III 300 V,
CAT II 600 V Pollution Degree 2 (anticipated transient overvoltage 4000 V)
UL61010B
CAN/CSA-C22.2No. 1010
EN61326
Functions and Display
Names and Functions of Parts
Connect
the test
leads to
the object
to be
measured.
10.
9.
Display:
Measurement
value
Units
Symbols
Decimal point
1.
4.
5.
6.
Battery cover (rear)
2.
3.
3.
7.
8.
Measurement Procedures
DANGER
Observe the following precautions to avoid electric shock.
Always verify the appropriate setting of the function selector before connecting the
test leads. Disconnect the test leads from the measurement object before switching
the function selector.
Never apply voltage to test leads when the Resistance, Continuity Check functions
are selected. Doing so may damage the instrument and result in personal injury. To
avoid electrical accidents, remove power from the circuit before measuring.
Test leads and this instrument should only be connected to the secondary side of a
breaker, so the breaker can prevent an accident if a short circuit occurs.
Connections should never be made to the primary side of a breaker, because
unrestricted current flow could cause a serious accident if a short circuit occurs.
AC Current Measurement ( A)
DANGER
To avoid short circuits and potentially life-threatening hazards, never attach the
instrument in current measurement mode to a circuit that operates at more than the
maximum rated voltage to earth CAT III 600 V.
NoOK
2.
1.
Voltage Measurement
DANGER
The maximum input voltage is 600 V AC/DC. Attempting to measure voltage in
excess of the maximum input could destroy the instrument and result in personal
injury or death.
To avoid electrical shock, be careful to avoid shorting live lines with the test leads.
In voltage measurement mode, the maximum rated voltage between input terminals
and ground is CAT III 300 V, CAT II 600 V. Attempting to measure voltages
exceeding 600 V with respect to ground could damage the instrument and result in
personal injury.
Test leads
1.
Outlet
3.
2.
Black (-)
test lead
Battery
Red (+)
test lead
1.
2.
3.
Resistance Measurement (Ω)
Test
leads
Resistor
1.
2.
3.
Continuity Test ( )
Test
leads
1.
3.
Cord
2.
Maintenance
CAUTION
If the protective functions of the instrument are damaged, either remove it from
service or mark it clearly so that others do not use it inadvertently.
To clean the instrument, wipe it gently with a soft cloth moistened with water or mild
detergent. Never use solvents such as benzene, alcohol, acetone, ether, ketones,
thinners or gasoline, as they can deform and discolor the case.
To avoid corrosion from battery leakage, remove the batteries from the instrument if
it is to be stored for a long time.
If the instrument seems to be malfunctioning, confirm that the battery is not
discharged, and that the test leads are not open circuited before contacting your
dealer or Hioki representative. Pack the instrument carefully so that it will not be
damaged during shipment, and include a detailed written description of the problem.
Hioki cannot be responsible for damage that occurs during shipment.
Replacing Battery
WARNING
If the instrument is connected to a line that is to be measured, dangerous voltage
levels may be applied to the terminals, and removing the case may expose live
components.
To avoid electric shock when replacing the battery, first disconnect the test leads
from the object being measured. Also, after replacing the battery, always replace the
cover and tighten the screw before using the instrument.
Use only CR2032 (Panasonic or MAXELL) lithium battery. Use of any other battery
may result in explosion.
When replacing the battery, be sure to insert them with the correct polarity.
Otherwise, poor performance or damage from battery leakage could result.
Battery may explode if mistreated. Do not short-circuit, recharge, disassemble or
dispose of in fire. Handle and dispose of batteries in accordance with local
regulations.
Keep batteries away from children to prevent accidental swallowing.
Battery cover
Battery
Using the 9209 TEST LEADS HOLDER (Option)
HEAD OFFICE
81 Koizumi, Ueda, Nagano 386-1192, Japan
TEL [phone] / FAX [phone]
E-mail: [e-mail]
HIOKI USA CORPORATION
6 Corporate Drive, Cranbury, NJ 08512, USA
TEL [phone] / FAX [phone]
URL:http://www.hioki.co.jp
1.
2.
Thank you for purchasing the HIOKI 3280-20 CLAMP ON HiTESTER.
To obtain maximum performance from the instrument, please read this manual first, and
keep it handy for future reference.
When you receive the instrument, inspect it carefully to ensure that no damage occurred
during shipping. If damage is evident, or if it fails to operate according to the
specifications, contact your dealer or Hioki representative.
Measurement categories (Overvoltage categories)
The current measurement section conforms to CAT III 600 V safety requirements, and the
voltage measurement section conforms to CAT III 300 V, CAT II 600 V requirements. To
ensure safe operation of measurement instruments, 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 instrument designed
for CAT III environments can endure greater
momentary energy than one designed for CAT
II. Using a measurement instrument in an
environment designated with a higher-numbered
category than that for which the instrument is
rated could result in a severe accident, and must
be carefully avoided. Never use a CAT I measuring instrument in CAT II, III, or IV environments.
The measurement categories comply with the Overvoltage Categories of the IEC60664 Standards.
This manual contains information and warnings essential for safe operation of the
instrument and for maintaining it in safe operating condition. Before using the
instrument, be sure to carefully read the following safety notes.
The following symbols in this manual indicate the relative importance of cautions and warnings.
Follow these precautions to ensure safe operation and to obtain the full benefits of the
various functions.
23
5 (73 9 ), 80%RH or less, no condensation.
Accuracy is guaranteed for input falling within 10% to 100% of each respective range.
AC measurement: True-rms
*1: rdg. (reading or displayed value), dgt. (resolution) *2: Frequency range
Auto Power Save Function
This function automatically switches to the power save state when 30 minutes have
elapsed since the last operation.
The auto power save function is activated automatically when the power is turned on.
To restore from the auto power save state, turn the function switch to the OFF
position once.
NOTE
: The auto power save function cannot be canceled.
Auto-range Function
When measuring an AC current ( A), AC voltage ( V), DC voltage ( V), or resistance
(Ω), the measurement range is automatically set to the most appropriate range.
Manual Range Function
Power on the tester while holding down a key to select a manual range for measuring
AC current ( A) , AC voltage ( V) , DC voltage ( V) or resistance (Ω). Note that this
function is not available for continuity testing. Press the Ω SAMP. F/S key to step
to the next range.
Powering on with the HOLD key held down: manual ranging, with FAST display update
Powering on with the Ω
SAMP. F/S key held down: manual ranging, with SLOW
display update
Overflow indication
When the input exceeds the measurement range, "OF" or "-OF" is displayed.
1. Display
2. Clamp sensor
3. Operation grip
4. Function switch
OFF / AC current (
A) / AC voltage
(
V) / DC voltage ( V) / Resistance
and Continuity check (Ω/ )
5. Ω
SAMP. F/S key
Measuring AC current or AC or DC
voltage
Switches display update rate
(FAST/SLOW).
If the display value is fluctuating and
hard to read, switch to the slow
update (SLOW: approximately every
3 seconds) to stabilize the display.
Measuring resistance or continuity
Switches between resistance
measurement (Ω) and continuity
testing ( ).
6. HOLD key
Press this to hold the display value
(the
indication appears). Press
once more to cancel the hold
function.
7. Connector 8. Plug
Connect the test lead plug to the connector for voltage measurement, resistance
measurement, or continuity testing. Align the slot on the plug with the key in the
connector.
9. Red test lead (+) 10. Black test lead (-)
Pre-Operation Inspection (Check the following before using the
instrument.)
The cladding of the test lead shall not be torn, and the metal shall not be exposed. (If
damage has occurred, replace with the specified test lead [Model 9208]. Failure to do
so may result in electric shock.)
The clamp sensor or the case shall be free of damage. (If damage has occurred,
avoid using the instrument. Use of the instrument under these conditions may result in
electric shock.)
The mating portions of the clamp sensor shall mate properly. The mating portions of
the clamp sensor should also be free of any scratches or cracks.
Battery power should be near full capacity when power is turned on. (If the battery is
near exhaustion, the indicator " " will light up. Using a battery close to exhaustion
may result in incorrect measurements.)
The reading should be around 0 A using the current function when no measurements
are being made.
The reading should be around 0 V using the voltage function while short-circuiting the
test lead.
The reading should be around 0 Ω using the resistance function while short-circuiting
the test leads.
NOTE:
Please note that waveforms that include elements outside the frequency
characteristic range may not be measured correctly.
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.
1. Set the function switch to
A.
2. Clamp the tester on the conductor, so that
the conductor passes through the center of
the clamp core. Clamp the tester on one
lead only.
Check that the test lead plug is firmly connected to the tester before beginning
measurement.
Measuring AC Voltage ( V)
Plug the test leads into the connector.
1. Set the function switch to
V.
2. Connect the test leads to the object to be
measured. When measuring AC voltage, the
polarity of the leads can be ignored.
3. Read the display.
Measuring DC Voltage ( V)
Plug the test leads into the connector.
1. Set the function switch to
V.
2. Connect the test leads to the object to be
measured.
3. Read the display.
NOTE
: Reversing the polarity of the leads
displays a negative value.
Plug the test leads into the connector.
1. Set the function switch to Ω/
.
2. Connect the test leads to the object to be
measured.
3. Read the display.
Plug the test leads into the connector.
1. Set the function switch to Ω/
.
2. Press the Ω
key, so that the
indication appears.
3. Connect the test leads to the object to be
measured.
Conductivity is good when the buzzer
sounds.
NOTE
: When the battery is exhausted, the
indication
appears in the display.
1. Remove the test leads from the test item, and power the
instrument off.
2. Remove the instrument from the case, and remove the
screws on the battery cover.
3. Remove the used battery.
4. Being careful about the polarity, insert the new battery of
the specified type. (CR2032 lithium battery:Panasonic or
MAXELL)
5. Replace the battery cover and fasten the screws.
NOTE
: The battery included with this instrument was
inserted for TESTING PURPOSES ONLY. Battery life will vary. Please replace
the original battery with a new battery as soon as it is depleted.
CR2032 lithium batteries (Panasonic or MAXELL) can be purchased at
electronics and appliance stores where specialized batteries are sold.
1. Remove the battery cover, and in its place fit the test lead holder (option). Fasten the
screws securely.
2. Insert the test lead into the test lead holder.