Siemens ET 757 E Series Provozní pokyny stáhnout pdf (Strana 164)

Appendix

A.2 ESD directives

ET 200pro FC

164 Operating Instructions, 11/2007, A5E01100763B AA

A.2.2 Definition of EMC environment and EMC classes

Classification of EMC behavior

The EMC environment and the EMC classes are defined in the EMC product standard

EN 61800-3 as follows:

Environment 1

An environment in which there are residential estates and facilities which are connected

directly to a public low-voltage supply network without the use of an intermediate

transformer.

Note

Example: Houses, apartments, commercial units or office rooms within a residential building.

Environment 2

An environment in which there are commercial estates and facilities which are not connected

directly to a public low-voltage supply network.

Note

Example: Developed commercial sites and other sites which are supplied by a transformer

provided specially for the purpose.

Class C1

Power drive system (PDS) with a rated voltage of less than 1000 V for use in residential

buildings.

Class C2

Power drive system (PDS) with a rated voltage of less than 1000 V, which is neither fitted

with a plug connector nor intended for (easy) transport and which, when used in residential

buildings, is designed solely for installation and commissioning by a specialist.

Note

A specialist is a person or organization with the necessary skills to install and/or commission

a power drive system (PDS) including its EMC aspects.

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