6000 COUNTS DIGITAL MULTIMETER
USER'S MANUAL
1. GENERAL INSTRUCTIONS
This instrument complies with IEC 61010-1: 2001, CAT III 1000V and CAT VI
600V over voltage standards. See specifications.
To get the best service from this instrument, read carefully this user's manual
and respect the detailed safety precautions.
International symbols used on the Meter and in this manual are explained in
chapter 1.2.
1.1 Precautions safety measures
1.1.1 Preliminary
* As the possibilities of high transient over voltages occurred in today's power
systems increase, more stringent safety standards are set for the electrical test
equipment. Transients on electrical systems(power grid, feeder or branch
circuits) will trigger a series of incidents that may result in serious personal
injury. To protect you against transients, safety must be built into the test
equipment.
Over voltage category
In brief
Examples
CAT I Electronic
• Protected electronic equipment.
• Equipment connected to (source) circuits in which measures are taken to
limit transient over voltages to an appropriately low level.
• Any high-voltage, low-energy source derived from a high winding
resistance transformer, such as the high-voltage section of a copier.
CAT II
Single-phase receptacle connected loads
• Appliance, portable tools, and other household and similar loads.
• Outlet and long branch circuits.
• Outlets at more than 10 meters from CAT III source.
• Outlets at more that 20 meters from CAT IV source.
CAT III
Three-phase at utility connection, any outdoor conductors
• Equipment in fixed installations, such as switch gear and poly phase
motors.
• Bus and feeder in industrial plants.
• Feeders and short branch circuits, distribution panel devices.
• Lighting systems in lager buildings.
• Appliance outlets with short connections to service entrance.