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Chapter II
1.
GENERAL INSTRUCTIONS
1.1. Precautions and safety measures
1.1.1.
Before using
You have just acquired a 4,000-count multimeter clamp. We
thank you for your confidence.
This multimeter clamp complies with the IEC 61010 norms
concerning electronic measuring instruments. For your own
safety and to prevent damage to the instrument, you must
follow the instructions given in this manual.
•
This instrument can be used for measuring category III
installation circuits, in an environment with a pollution
degree of 2 and with a voltage no higher than 600 V in
relation to the earth.
∗
Definition of the installation categories
(see IEC 61010-1 publication):
CAT I: CAT I circuits are circuits protected by low level
transient -voltage surge limiters
Example: protected electronic circuits
CAT II : CAT II circuits are household or similar appliance
power circuits, which may carry medium-level transient
voltage surge.
Example: household appliance and portable tool power
supplies
CAT III : CAT III circuits are high-power appliance power
circuits, which may carry high-level transient voltage
surges.
Example: industrial machinery or instrument power
supplies
CAT IV : CAT IV circuits are circuits which can carry very
substantial transient -voltage surges.
Example: power feeders
For safety reasons, you should only use leads that comply with
the IEC 61010 standard.
Before using, always check that they are in perfect working
order.
1.1.2.
When using the instrument
•
Never exceed the protection limit values indicated in the
specifications for each type of measurement.
•
When
the
multimeter
clamp
measurement
circuits, do not touch any unused
terminals.
•
Before changing the function, disconnect the measure-
ment leads from the circuit measured.
•
Never measure resistances on a live circuit.
1.1.3.
Symbols
Refer to the user's manual
Risk of electric shock
Double insulation
MX 650 / MX 655
is
linked
to
the
17
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