Technical data

78 • Application in Explosive Environments
Installation Regulations
WAGO-I/O-SYSTEM 750
CC-Link
6.6 Installation Regulations
In the Federal Republic of Germany, various national regulations for the in-
stallation in explosive areas must be taken into consideration. The basis being
the ElexV complemented by the installation regulation DIN VDE 0165/2.91.
The following are excerpts from additional VDE regulations:
DIN VDE 0100 Installation in power plants with rated voltages up to
1000 V
DIN VDE 0101 Installation in power plants with rated voltages above
1 kV
DIN VDE 0800 Installation and operation in telecommunication plants
including information processing equipment
DIN VDE 0185 lightning protection systems
The USA and Canada have their own regulations. The following are excerpts
from these regulations:
NFPA 70 National Electrical Code Art. 500 Hazardous Locations
ANSI/ISA-RP
12.6-1987
Recommended Practice
C22.1 Canadian Electrical Code
Danger
For the use of WAGO-I/O SYSTEM 750 (electrical operating means) with
Ex approval the observance of the following points is mandatory:
· The electrical operating means are exclusively suitable for applications in
explosion endangered areas (Europe Group II, Zone 2 or America: Class
I, Division 2, Group A, B, C, D) or in non-explosion endangered areas!
· Ensure that only approved modules of the electrical operating means will
be used. Replacement of components can jeopardize the suitability of the
system in explosion endangered zones!
· Only disconnect and/or connect electrical operating means when the volt-
age supply is isolated or when a non-explosive atmosphere has been as-
certained!
· Adhere to the specified data regarding voltage supply and fusing. (See
data on the fuse holder)!