Compliance information
Pollution degree
descriptions
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
condensa
tion occurs only when the product is out of service.
Pollution degree 3. Conductive pollution, or dry, nonconductive pollution
that bec
omes 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 d egree 4. Pollution that generates persistent conductivity through
conductive dust, rain, or snow. Typical outdoor locations.
Pollution degree rating
Pollu
tion degree 2 (as defined in IEC 61010-1). Rated for indoor, dry location
use only.
IP rating
IP20 (as defined in IEC 60529).
Measurement and
overvoltage category
descriptions
Mea
surement 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.
Mains overvoltage
category rating
Overvoltage category II (as defined in IEC 61010-1).
x ECO8000 Series Automatic Changeover Unit User Manual
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