International Electrical Symbols - Matco Tools MD251 Guia Del Usuario

WARNING
To reduce the risk of fire or electric shock, do not expose this product to rain or moisture. To avoid
electrical shock hazard, observe the proper safety precautions when working with voltages above
60 VDC or 30 VAC rms. These voltage levels pose a potential shock hazard to the user. Do not
touch test lead tips or the circuit being tested while power is applied to the circuit being measured.
Keep your fingers behind the finger guards of the test leads during measurement. Inspect test
leads, connectors, and probes for damaged insulation or exposed metal before using the
instrument. If any defects are found, replace them immediately. Do not measure any current that
exceeds the current rating of the protection fuse. Do not attempt a current measurement to any
circuit where the open circuit voltage is above the protection fuse voltage rating. Suspected open
circuit voltage should be checked with voltage functions. Never attempt a voltage measurement
with the test lead inserted into the A/mA or A input jack. Only replace the blown fuse with the
proper rating as specified in this manual. Only use the test lead provided with the equipment or UL
Listed Probe Assembly with rating or better.
CAUTION
Disconnect the test leads from the test points before changing functions. Always set the instrument
to the highest range and work downward for an unknown value when using manual ranging mode.

INTERNATIONAL ELECTRICAL SYMBOLS

Caution ! Refer to the explanation in this Manual
!
Caution ! Risk of electric shock
Earth (Ground)
Double Insulation or Reinforced insulation
Fuse
AC--Alternating Current
DC--Direct Current
2) CENELEC DIRECTIVES
The instruments conform to CENELEC Low-voltage directive 2006/95/EC and Electromagnetic
compatibility directive 2004/108/EC
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