Connecting The Measuring Cables; Measuring Categories - Westfalia Wetekom 82 67 24 Instruction Manual

Replace the batteries when the low battery icon
on the display.

Connecting the Measuring Cables

The measuring cables provided are capable of taking measure-
ments up to a maximum of 600 V. The measurement of high
voltages should always be performed with great care and only
when a person trained in first aid is present.
Important! The maximum allowable input voltage of this unit is
600 V (CAT III) and must not be exceeded.

Measuring Categories

(formerly CAT I). This measuring category is intended for

taking measurements on circuitry not directly connected to the
power mains.
 The measuring category CAT II is intended for taking
measurements on low-voltage circuitry. Examples for this are
household appliances, mobile electric devices or similar
equipment and as well as power sockets with a distance of
more than 10 m to CAT III sources and power sockets with a
distance of more than 20 m to CAT IV sources.
 The measuring category CAT III is intended for taking
measurements on house installations. Examples for this are
measurements on switches, power sockets, distribution boxes,
three-phase buses, circuit breakers, wiring, terminal strips and
connection boxes on fixed house installation, but also for
measurements on industrial devices and equipment such as
permanently installed motors.
 The measuring category CAT IV is intended for taking
measurements on sources of low-voltage installation, such as
counters or measurements on primary overload protection
equipment.
Operation
26
appears