Tektronix PatternPro PPG1600 User Manual page 78

Pollution degree
descriptions
Pollution degree rating
Measurement and
overvoltage category
descriptions
Mains overvoltage
category rating
PPG1600, PPG3000, & PPG3200 Pattern Generator User Manual
A measure of the contaminants that could occur in the environment around
and within a product. Typically the internal environment inside a product is
considered to be the same as the external. Products should be used only in the
environment for which they are rated.
Pollution degree 1. No pollution or only dry, nonconductive pollution occurs.
Products in this category are generally encapsulated, hermetically sealed, or
located in clean rooms.
Pollution degree 2. Normally only dry, nonconductive pollution occurs.
Occasionally a temporary conductivity that is caused by condensation must
be expected. This location is a typical office/home environment. Temporary
condensation occurs only when the product is out of service.
Pollution degree 3. Conductive pollution, or dry, nonconductive pollution
that becomes conductive due to condensation. These are sheltered locations
where neither temperature nor humidity is controlled. The area is protected
from direct sunshine, rain, or direct wind.
Pollution degree 4. Pollution that generates persistent conductivity through
conductive dust, rain, or snow. Typical outdoor locations.
Pollution degree 2 (as defined in IEC 61010-1). Rated for indoor, dry location
use only.
Measurement terminals on this product may be rated for measuring mains voltages
from one or more of the following categories (see specific 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.
Overvoltage category II (as defined in IEC 61010-1).
Compliance information
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