Radio Interference - Siemens EH675TK11E Repair Instruction

5.5

Radio interference

5.5.1 Problem
The radio cannot be heard properly when operating the inductor.
5.5.2 Cause
Inductor worktops and radios interfere with each other.
Regulations establish certain emission and immunity levels for
electronic devices in order to avoid such interference problems. If they
occur, they may be caused by one of several reasons:
 The worktop does not comply with the emission limits defined
by the regulations governing the product. In our case, the
worktops are certified according to European and international
regulations EN55011 and CISPR 11. Therefore, they comply
with the established emission limits.
See the list of regulations and emission / immunity tests with
which all our inductor equipment comply.
 The radio does not comply with the immunity regulations for
the product.
 It is possible for interference to occur when the two devices
comply with their respective regulations. These regulations are
unable to cover the infinite possible number of individual cases
(only general situations) and interference may occur.
5.5.3 Solution
Check that the radio
corresponding immunity regulations for the product.
206_58300000141095_ara_en_k.doc – 04.10.a
receiver complies with
In those cases where the two devices comply with their
respective regulations and interference still occurs, it is
recommended to separate them sufficiently.
5.5.3.1 List of regulations and emission / immunity tests
Code
EN 55011 Industrial, scientific and medical (ISM) radio-frequency
Equipment. Electromagnetic disturbance characteristics.
Limits and methods of measurement
EN 61000-3-2 Electromagnetic compatibility (EMC) - Part 3-2: Limits –
Section 2: Limits for harmonic current emissions
(equipment input current greater than or equal to 16 A
per phase)
EN 61000-3-3 Electromagnetic compatibility (EMC) – Part 3-3: Limits –
Section 3: Limitation of voltage changes, voltage
fluctuations and flicker in public low-voltage supply
systems, for equipment with rated current =16 A per
phase
the
EMC - Emission
Title
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