Xylem hydrovar - Cascade Relay; The Data Plate

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5.2 EMC Requirements (Electromagnetic Compatibility)
The EMC requirements depend on the intended use.
Class B environment (EN 61800-3: Class C2)
Environment that includes domestic premises, it also includes establishments directly connected without in-
termediate transformers to a low-voltage power supply network which supplies buildings used for domestic
purposes. Examples of class B environments include houses, apartments, commercial premises or ofces in a
residential building.
CAUTION: The relevant EMC regulations for which the HYDROVAR was tested in class B environments is based
on the restricted use of the product and the following limitations:1) the drive voltage is less than 1000 V; 2) it
is neither a plug in device nor a movable device and, 3) when used in the class B environment, it is intended to
be installed and utilized by technicians with the necessary training and skills required for installing and/or using
power drive systems, including specic training with respect to EMC requirements.
Class A environment (EN 61800-3: Class C3)
Environment that includes all establishments other than those directly connected to a low voltage power supply
network which supplies buildings used for domestic purposes e.g. Industrial areas, technical areas of any build-
ing fed from a dedicated transformer are typical examples of class A environment locations.
The HYDROVAR complies with the general EMC regulations and is tested according to the following
standards: EN 61800-3/2004
EN 55011 (2002) Disturbance voltages / Disturbance eld strength
First environment Second Environment
– class B / class C2 – class A / class C3
Disturbance voltages OK OK
Disturbance eld strength * OK
* Warning - In a domestic environment, this product may cause radio interference, in which case supplementary mitigation measures
may be required.
EN 61000-4-2 (2001) Electrostatic discharge
EN 61000-4-3 (2002) Electromagnetic eld immunity test
EN 61000-4-4 (2001) Burst immunity test
EN 61000-4-5 (2001) Surge immunity test
EN 61000-4-6 (1996) Immunity of conducted RF-Disturbance
TECHNICAL DATA