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Beschikbare talen
Beschikbare talen
Always discharge filter capacitors in power supplies and disconnect
•
the power when making resistance or diode tests
Always turn off the power and disconnect the test leads before
•
opening the covers to replace the fuse or batteries
•
Never operate the meter unless the back cover and the battery and
fuse covers are in place and fastened securely
If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired
Per IEC1010 overvoltage installation category
Overvoltage category I
Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to
circuits in which measures are taken to limit the transient overvoltages to an
appropriate low level. Examples include protected electronic circuits.
Overvoltage category II
Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment
to be supplied from the fixed installation. Examples include household,
office, and laboratory appliances.
Overvoltage category III
Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installati-
ons. Examples include switches in the fixed installation and some equipment
for industrial use with permanent connection to the fixed installation.
Overvoltage category IV
Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the
installation. Examples include electricity meters and primary overcurrent
protection equipment
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