Metrel MD 9020 Digital-Multimeter, DMM, 20991442 Hoja De Datos

4 

 
This manual contains information and warnings that must be followed for operating the 
instrument safely and maintaining the instrument in a safe operating condition. If the 
instrument is used in a manner not specified by the manufacturer, the protection 
provided by the instrument may be impaired. The meter is intended only for indoor use. 
 
The meter (all versions) is protected, against the users, by double insulation per 
UL3111-1(1994), CSA C22.2 No. 1010-1-92, EN61010-1(1995) and IEC61010-1(1995) 
to CAT II 1000V & CAT III 600V. 
 
Standard CE version series Terminals (to COM) ratings: 

  V :Category II 1000 Volts AC & DC, and Category III 600 Volts AC & DC. 
  A / mAA :  Category II 250 Volts ac and 150 Volts dc. 
 

  V :Category II 1000 Volts AC & DC, and Category III 600 Volts AC & DC. 
  A / mAA :  Category III 500 Volts AC and 300 Volts DC. 

*Look for UL listed logo printed on meter 
 
PER IEC61010 OVERVOLTAGE INSTALLATION CATEGORY 
 
OVERVOLTAGE CATEGORY II 
Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be 
supplied from the fixed installation. 
Note – Examples include household, office, and laboratory appliances. 
 
OVERVOLTAGE CATEGORY III 
Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations. 
Note – Examples include switches in the fixed installation and some equipment for 
industrial use with permanent connection to the fixed installation. 
 
Terms in this manual: 
WARNING  

identifies conditions and actions that could result in serious injury or even 
death to the user. 

identifies conditions and actions that could cause damage or malfunction 
in the instrument. 

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