Compliance information
Measurement and
overvoltage category
descriptions
Measurement terminals on this product may be rated for measuring mains voltages
from one or more of the following categories (see speci
fi
c ratings marked on
the product and in the manual).
Category II. Circuits directly connected to the building wiring at utilization
points (socket outlets and similar points).
Category III. In the building wiring and distribution system.
Category IV. At the source of the electrical supply to the building.
NOTE.
Only mains power supply circuits have an overvoltage category rating.
Only measurement circuits have a measurement category rating. Other circuits
within the product do not have either rating.
Mains overvoltage
category rating
Overvoltage category II (as de
fi
ned in IEC 61010-1).
12
MDO3000 Installation and Safety Instructions
