Manual Velleman DVM68 (page 5 of 55) (English, German, Dutch, French, Spanish)

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DVM68

25.02.2011

Switch off the meter and remove test probes prior to replacing the battery or fuses.

All

modifications of the device are forbidden for safety reasons. Damage caused by

user modifications to the device is not covered by the warranty.

4. Overvoltage/installation category

DMMs are categorized depending on the risk and severity of transient overvolt

occur at the point of test. Transients are short-

lived bursts of energy induced in a system, e.g.

caused by lightning strike on a power line.

The existing categories according EN 61010-1 are:

CAT I

A CAT I-

rated meter is suitable for measurements on protected electronic circuits

are not directly connected to mains power, e.g. electronics circuits, control signals…

CAT II

A CAT II-rated meter is suitable for measurements in CAT I-

environments

phase appliances which

are connected to the mains by means of a plug and circuits in a

normal domestic environment, provided that the circuit is at least 10m apart from a CAT

III- or 20m apart from a CAT IV-

environment. E.g. household appliances,

CAT III

A CAT III-rated meter is suitable for measurements in CAT I-

and CAT II

as well as for measurements on (fixed) mono- or poly-

phased appliances which are at

least 10m apart from of a CAT IV-environment, and for measure

ments in or on

distribution level equipment (

fuse boxes, lighting circuits, electric ovens

CAT IV

A CAT IV-rated meter is suitable for measuring in CAT I-, CAT II-

environments as well as on the primary supply level.

Note that for all measu

rements on equipment for which the supply cables run outdoors

(either overhead or underground) a CAT IV meter must be used.

Warning:

This device was designed in accordance with EN 61010-

1 installation category CAT III 600V / CAT

II 1000V. This implies that certain restrictions in use apply that are related to voltages and

voltage peaks which can occur within the environment of use. Refe

r to the table above.

This device is suitable for measurements up to 1000V on:

•

Protected electronic circuits which

are not directly connected to mains power, e.g. electronics

circuits, control signals, circuits behind isolating transformer…

•

circuits which are directly connected to mains power, but limited to:

measurements on mono-phase appliances which

are connected to the mains by means of a

plug

mono-

phase appliances and circuits directly connected to the mains in a normal domestic

environment, provided

that the circuit is at least 10m apart from a CAT III

from a CAT IV-

environment. E.g. household appliances, portable tools, light circuits at more

than 10m from a distribution board …

This device is suitable for measurements up to 600V:

• measurements in/on low-

voltage distribution boards (distribution boards

• measurements on (fixed) mono- or poly-

phased appliances and circuits except in CAT

environments (e.g. mains outlets, electric ovens, lighting circuits,

bus bars, low

distribution boards and circuit breakers).

This device is NOT suitable for:

• Voltages above 1000V

•

Measurements on distribution equipment and outdoor installations including meter boxes and

equipment/circuits outside or remote from the domestic environ

ment e.g. circuits in sheds,

garden houses and free-

standing garages , or circuits using underground wiring e.g. garden

lighting, pool-pump...

This device is only suitable for measurements up to 600V in

CAT III

in CAT II environments.

Rev. 01

©Velleman nv

Switch off the meter and remove test probes prior to replacing the battery or fuses.

modifications of the device are forbidden for safety reasons. Damage caused by

user modifications to the device is not covered by the warranty.

DMMs are categorized depending on the risk and severity of transient overvolt

age that might

lived bursts of energy induced in a system, e.g.

rated meter is suitable for measurements on protected electronic circuits

which

are not directly connected to mains power, e.g. electronics circuits, control signals…

environments

and mono-

are connected to the mains by means of a plug and circuits in a

normal domestic environment, provided that the circuit is at least 10m apart from a CAT

environment. E.g. household appliances,

portable tools…

and CAT II

-environments,

phased appliances which are at

ments in or on

fuse boxes, lighting circuits, electric ovens

and CAT III-

rements on equipment for which the supply cables run outdoors

1 installation category CAT III 600V / CAT

II 1000V. This implies that certain restrictions in use apply that are related to voltages and

r to the table above.

are not directly connected to mains power, e.g. electronics

are connected to the mains by means of a

phase appliances and circuits directly connected to the mains in a normal domestic

that the circuit is at least 10m apart from a CAT III

- or 20m apart

environment. E.g. household appliances, portable tools, light circuits at more

voltage distribution boards (distribution boards

behind meter box)

phased appliances and circuits except in CAT

IV-

bus bars, low

-voltage

Measurements on distribution equipment and outdoor installations including meter boxes and

ment e.g. circuits in sheds,

standing garages , or circuits using underground wiring e.g. garden

CAT III

and up to 1000V

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Velleman DVM68 Manual

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