Hioki 3272 User manual

Contents
Introduction i
Inspection i
Notes on Safety ii
Precautions vii
Chapter 1 Overview 1
1.1 Product Overview 1
1.2 Names of Parts 2
Chapter 2 Specifications 5
2.1 Product Specifications 5
2.2 Standards Applying 6
Chapter 3 Measurement Procedure 7
3.1 Preparations 8
3.2 Measurement Procedure 9
Chapter 4 Description of Parts 13
4.1 Power Supply Receptacle 13
4.2 How to Change the Power Supply Fuse
and Change the Power Supply Voltage 13

i
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Introduction
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Introduction
Inspection
Thank you for purchasing the HIOKI "Model 3272
POWER SUPPLY."
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. If
damage is evident, or if it fails to operate according
to the specifications, contact your dealer or Hioki
representative.
Supplied accessories
Power cord 1
Instruction manual 1
Spare fuse 1
100 V, 120 V: F1.0 AL/250 V, 20 mm x 5 mm dia.
220 V, 240 V: F0.5 AL/250 V, 20 mm x 5 mm dia.

ii
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Notes on Safety
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WARNING
This product is designed to comply with 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.
Notes on Safety

iii
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Notes on Safety
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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 grounding terminal.
Indicates a fuse.
Indicates AC (Alternating Current).
Indicates the ON side of the power
switch.
Indicates the OFF side of the power
switch.
Safety Symbols
This manual contains information and warnings
essential for safe operation of the product and for
maintaining it in safe operating condition. Before
using it, be sure to carefully read the following
safety precautions.

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Notes on Safety
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Measurement categories (Overvoltage categories)
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).

vi
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Notes on Safety
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Higher-numbered categories correspond to electrical
environments with greater momentary energy. So a
measurement device designed for CAT III
environments can endure greater momentary energy
thanadevicedesignedforCATII.
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.