Hioki 3273 Manuel utilisateur
INSTRUCTION MANUAL
CLAMP ON PROBE
3273
Contents
Introduction i
Inspection i
Safety Notes i
Note on Use iv
Chapter 1 Overview 1
1.1 Product Overview 1
1.2 Features 1
1.3 Names of Parts 2
1.4 Parts of the Sensor 3
Chapter 2 Specifications 5
2.1 Product Specifications 5
2.2 Standards Applying 7
Chapter 3 Measurement Procedure 9
3.1 Notes on Use 9
3.2 Preparations for Measurement 13
3.3 Demagnetizing and Zero Adjustment 14
3.4 Measurement Procedure 16
i
____________________________________________________
Introduction
___________________________________________
WARNING
This device is designed to comply with IEC
61010-1 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 device.
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 device defects.
Introduction
Inspection
Safety Notes
Thank you for purchasing the HIOKI "3273 CLAMP
ON PROBE". To obtain maximum performance
from the device, please read this manual first, and
keep it handy for future reference.
When you receive the device, 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.
Supplied accessories
Instruction manual 1
Soft case 1
ii
____________________________________________________
Safety Notes
___________________________________________
The symbol printed on the device
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
device.
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 device.
NOTE Indicates advisory items related to
performance or correct operation of the
device.
Safety Symbols
This manual contains information and warnings
essential for safe operation of the device and for
maintaining it in safe operating condition. Before
using the device, be sure to carefully read the
following safety notes.
The following symbols in this manual indicate the
relative importance of cautions and warnings.
iii
____________________________________________________
Safety Notes
___________________________________________
Overvoltage Categories (CAT)
This device conforms to the safety requirements for CAT I
measurement instruments.
To ensure safe operation of measurement instruments, IEC
60664 establishes safety standards for various electrical
environments, categorized as CAT I to CAT IV, and called
overvoltage categories. These are defined as follows.
CAT I : Secondary electrical circuits connected to an AC
electrical outlet through a transformer or similar
instrument.
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 instrument (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.
iv
____________________________________________________
Note on Use
___________________________________________
DANGER
To avoid short circuits and potentially life-
threatening hazards, follow these precautions.
Never attach the 3273 to a circuit that operates
at more than 300V, or over bare conductors.
While the core section is open, and when
conductors being measured carry in excess of
the safe voltage level (SELV-E) and not more
than 300 V, make sure that conductors to be
measured are insulated with material
conforming to (1) Overvoltage Category I,(2)
Basic Insulation Requirements for Working
Voltages of 300 V, and (3) Pollution Degree 2.
For safeties sake, never use this sensor on
bare conductors. The core and shield case are
not insulated.
Be careful to avoid damaging the insulation
surface while taking measurements.
Note on Use
Follow these precautions to ensure safe operation
and to obtain the full benefits of the various
functions.
v
____________________________________________________
Note on Use
___________________________________________
DANGER
This device is made for use with the 3272
POWER SUPPLY. It is possible to use a power
supply other than the 3272, provided that the
connector and pin assignments match, and that
voltage and other electrical specifications are
satisfied. In the interest of safety, make sure
that the power supply has a protective earthing
with double-insulation construction.
Make sure that the waveform measuring
equipment connected to this device's output
terminal (BNC) is equipped with a protective
earthing with double-insulation construction.
To avoid electric shock, do not touch the
portion beyond the barrier during use.
If the waveform measuring instrument being
connected to the output terminal (BNC) on this
device is equipped with any other measurement
terminals, take the following precautions to
ensure that the other instrument does not form
a bridge between the probe and any hazardous
live of a part.
1. Isolate the terminal to which the probe is
connected from other terminals on the
measuring instrument using basic insulation
conforming to the overvoltage category,
working voltage, and pollution degree
requirements of the circuit being tested.
vi
____________________________________________________
Note on Use
___________________________________________
DANGER
2. If basic insulation requirements cannot be
met between the terminal to which this device
is connected and other terminals of the
measuring instrument, make sure that the
voltage input to the measurement terminal
does not exceed the safe voltage level (SELV-
E).
3. Read and observe all warnings and
precautions relating to electrical safety for the
measuring instrument being connected to the
probe.
Refer to the following standards regarding the
meanings of underlined terms.
IEC61010-1
IEC61010-2-031
IEC61010-2-032
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