BS EN 61326-3-2-2008 测量、控制和实验室用电气设备.电磁兼容性(EMC)的要求.与安全相关的系统和用于与执行安全相关功能(功能安全)的设备用抗扰度要求.带指定电磁环境的工业设施
Electrical equipment for measurement, control and laboratory use -
EMC requirements -
Part 3-2: Immunity requirements for safety-related systems
and for equipment intended to perform safety-related functions
(functional safety) -
Industrial applicati
The scope of IEC 61326-1 applies to this part of IEC 61326 but is limited to systems and
equipment for industrial applications within a specified electromagnetic environment and
intended to perform safety functions as defined in IEC 61508 with SIL 1-3.
The electromagnetic environments encompassed by this product family standard are
industrial, both indoor and outdoor, as they can be found in industrial applications with an
electromagnetic environment having specified characteristics (for example, process industry).
The difference between the electromagnetic environment covered by this standard compared
to the general industrial environment (see IEC 61326-3-1) is due to the mitigation measures
employed against electromagnetic phenomena leading to a specified electromagnetic
environment.
The environment of industrial application with a specified electromagnetic environment
typically includes the following characteristics:
– industrial area with limited access;
– limited use of mobile transmitter;
– dedicated cables for power supply and control, signal or communication lines;
– separation between power supply and control, signal or communication cables;
– factory building mostly consisting of metal construction;
– overvoltage/lightning protection by appropriate measures (for example, metal construction
of the building or use of protection devices);
– pipe heating systems driven by a.c. main power may be present;
– no high-voltage substation close to sensitive areas;
– presence of CISPR 11 Group 2 ISM equipment using ISM frequencies only with low
power;
– competent staff;
– periodical maintenance of equipment and systems;
– mounting and installation guidelines for equipment and systems.
A more detailed description of the above-mentioned typical characteristics is given in
Annex B.
Equipment and systems considered as “proven-in-use” according to IEC 61508 or IEC 61511
are excluded from the scope of IEC 61326-3-2.
Fire alarm systems and security alarm systems intended for protection of buildings are
excluded from the scope of IEC 61326-3-2.