Hioki MEMORY HiLOGGER LR8450 Quick Start Manual

7
Safety
Measurement categories
IEC 61010 denes measurement categories to facilitate safe use of measuring instruments. Test
and measurement circuits designed to be connected to a main power supply circuit are classied
into three categories depending on the type of main power supply circuit.
DANGER

Do not use an instrument to measure a main power supply circuit
whose category exceeds the instrument’s rated measurement category.

Do not use an instrument that does not have a rated measurement
category to measure a main power supply circuit.
Doing so may result in serious bodily injury or damage to the instrument or other
equipment.
CAT II Applicable to test and measuring circuits connected directly to utilization points
(socket outlets and similar points) of the low-voltage mains installation.
Examples: Measurements on household appliances, portable tools, and similar
equipment, and on the consumer side only of socket-outlets in the xed
installation.
CAT III Applicable to test and measuring circuits connected to the distribution part of the
building’s low-voltage mains installation.
Examples: Measurements on distribution boards (including secondary meters),
photovoltaic panels, circuit breakers, wiring, including cables, bus-
bars, junction boxes, switches, socket-outlets in the xed installation,
and equipment for industrial use and some other equipment such as
stationary motors with permanent connection to the xed installation.
CAT IV Applicable to test and measuring circuits connected at the source of the building’s
low-voltage mains installation.
Examples: Measurements on devices installed before the main fuse or circuit
breaker in the building installation.
T
Outlet
CAT II
CAT III
Indoor wiring
Energy meter
Distribution panel
Service inlet
Service wire
CAT IV
Fixed equipment
HIOKI LR8450A963-02

Hioki MEMORY HiLOGGER LR8450 Specifications

General

Brand	Hioki
Model	MEMORY HiLOGGER LR8450
Category	Data Loggers
Language	English