11.9 Protecting persons from electromagnetic fields
Overview
Protection of workers from electromagnetic fields is specified in the European EMF Directive
2013/35/EU. This directive is implemented in national law in the European Economic Area
(EEA). Employers are obligated to design workplaces in such a way that workers are protected
from impermissibly strong electromagnetic fields.
To this end, assessments and/or measurements must be performed for workplaces.
Precondition
1. The laws for protection from electromagnetic fields in force in individual EU member states
can go beyond the minimum requirements of the EMF Directive 2013/35/EU and always
take precedence.
2. The ICNIRP 2010 limits for the workplace are the basis for the assessment.
3. The 26th BImSchV (German Federal Emission Protection Regulation) defines 100 μT
(RMS) for the assessment of active implants.
According to Directive 2013/35/EU, 500 µT (RMS) at 50 Hz is applicable here.
4. Compliance with the limit values was assessed for the following frequencies:
– Line frequency 47 ... 63 Hz
– Pulse frequency, for example 4/8/16 kHz and multiples thereof, assessed up to a
maximum of 100 kHz
5. The routing of power cables has a significant impact on the electromagnetic fields that occur.
Install and operate the components inside metallic cabinets in compliance with the
documentation and use shielded motor cables.
EMC-compliant setup of the machine or plant (Page 52)
Description
The following information regarding electromagnetic fields relates solely to converters supplied
by Siemens.
The converters are normally used in machines. The assessment and testing is based on
DIN EN 12198.
The indicated minimum distances apply to the head and complete torso of the human body.
Shorter distances are possible for extremities.
Table 11-1 Minimum distances to the converter
Individuals without active implants Individuals with active implants
Control cabinet
closed
Control cabinet
open
Control cabinet
closed
Control cabinet
open
0 cm Forearm length (ap‐
prox. 35 cm)
Must be separately assessed depending on the
active implant.
Technical data
11.9 Protecting persons from electromagnetic fields
SINAMICS G120X converter
1108 Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
To Next Page
Loading...
