IEC 62040-2 pdf free download
IEC 62040-2 pdf free download.Uninterruptible power systems (UPS) – Part 2: Electromagnetic compatibility (EMC) requirements.
4 UPS categories
4.1 Category Cl UPS
This category includes UPS intended for use without any restriction in the first environment.
Category Cl UPS shall comply with category Cl requirements for emission limits (see
Clause 5) and for immunity (see Clause 6).
4.2 Category C2 UPS
This category includes UPS intended for use without any restriction in the second environment. Such UPS may also be used in the first environment when the effect of the warning notice below is considered.
Category C2 UPS shall comply with category C2 requirements for emission limits (see Clause 5) and for immunity (see Clause 6).
The following warning shall be included in the user manual.
WARNING: This is a category C2 UPS product. In a residential environment, this product may cause radio interference, in which case the user may be required to take additional measures.
NOTE Such additional measures can require the services of a person or organization skilled with respect to EMC
aspects.
4.3 Category C3 UPS
This category includes UPS with an output current exceeding 16 A and intended for use in the second environment with the following restrictions:
a) the UPS shall be installed and commissioned by a professional person or organization that is skilled with respect to EMC aspects;
b) the UPS location shall be physically separated from other buildings classified as first environment by a distance greater than 30 m or by a structure which acts as a barrier to radiated phenomena providing equivalent attenuation; and
C) the installation shall be supplied through a dedicated transformer or generator or through a device providing equivalent attenuation.
Category C3 UPS shall comply with category C3 requirements for emission limits (see
Clause 5) and for immunity (see Clause 6).
The following warning shall be included in the user manual.
4.4 Category C4 UPS
This category includes UPS that cannot be classified within any of the Cl, C2 or C3
categories and intended for use in environments subject to particular requirements. Such UPS shall meet the specific emission and immunity levels applicable for the installation.
A category C4 UPS is not limited by current ratings.
NOTE Conformity assessment of a C4 UPS generally consists of a technical evaluation of the effect of combining complying UPS variants and subassemblies, and of a final site test to verify compliance with requirements that cannot be readily verified by technical evaluation. For details regarding site testing refer to Annex E.
4.5 Categories and environment
If the environment has been determined as the first environment, a category Cl or C2 UPS should be used.
If the environment has been determined as the second environment, a category C2 or C3 UPS should be used.
If the environment is not covered exclusively either by the first or second environment, a category C4 UPS should be used.
From the emission point of view, a UPS with a lower emission category, such as Cl, can always be used instead of one with a higher emission category, such as C3.
Emission categories are independent of immunity. For example, a statement that a UPS has emission category Cl does not imply that the immunity is only suitable for the first environment.
4.6 Documentation
For EMC purposes, the following shall be included in the user documentation:
a) any special measures to be taken to achieve compliance, for example, the segregation of cables, the use of shielded or special cables and any restriction on the length of cables connected to the AC output and/or to the energy storage device;
b) upon request, a list of EMC-compatible UPS accessories;
c) warning notice for category Cl UPS as described in 6.3.2;
d) warning notice for category C2 and category C3 UPS as applicable and as described in 4.2 and 4.3.
IEC 62040-2 pdf download.
