Electromagnetic compatibility (EMC) — Part 6-5: Generic standards — Immunity for equipment used in power station and substation environment (IEC 61000-6-5:2015, IDT)
This part of IEC 61000 specifies EMC immunity requirements which apply to electrical and
electronic equipment intended for use in power stations and substations, as described below.
Immunity requirements for electromagnetic phenomena with spectral contributions in the
frequency range 0 Hz to 400 GHz are covered. No tests need to be performed at frequencies
or for phenomena where no requirements are specified.
This international standard sets immunity test requirements for equipment intended for use in
the generation, transmission and distribution of electricity and related telecommunication
systems. The electromagnetic environments encompassed by this standard are those which
exist at locations
• in power stations, and
• in high and medium voltage substations.
Installations to generate or convert into electrical power inside industrial facilities are also
covered by this standard as long as they, at their primary electrical connection, cannot be
directly connected to the LV power network, e.g. where the generator output voltage is
medium voltage or higher. Power installations that directly provide power into the low voltage
network (such as photovoltaic cells or combined heat power systems in private houses) are
not covered by this standard.
NOTE 1 In general, power stations comprise installations which are mainly built to convert some kind of primary
energy into electrical energy. Moreover, these power stations are connected to the medium or high voltage power
system directly or via a step-up transformer.
The object of this standard is to define immunity test requirements for equipment defined in
the scope in relation to continuous and transient, conducted and radiated disturbances,
including electrostatic discharges.
The immunity test requirements are given on a port-by-port basis, and selected according to
the location, with differentiated levels for equipment to be installed in power stations or
substations. In special cases, situations will arise where the level of electromagnetic
disturbances may exceed the levels specified in this standard; in these instances, special
mitigation measures should be adopted.
The immunity requirements are suitable for satisfying the particular needs related to the
functions and tasks of equipment and systems, for which reliable operation is required under
realistic electromagnetic conditions; in this respect, this standard establishes performance
criteria for different functional requirements.
This generic EMC immunity standard is applicable if no relevant dedicated product or productfamily
EMC immunity standard exists. According to IEC Guide 107, this generic standard
should be considered for the preparation or revision of any EMC standard referring to specific
products used in power stations and substations.
NOTE 2 Product standards covering EMC aspects for equipment to be used in power stations or substations are
for example IEC 62271-1 (switchgear and controlgear), IEC 60255-26 (measuring relays and protection equipment)
or IEC 62236-5 (fixed power supply installations and apparatus for railway applications).
Non-electronic high voltage and power equipment (primary system) are excluded from the
scope of this standard.
Emission requirements are not within the scope of this standard and are covered by relevant
product or product-family standards.
NOTE 3 Where no dedicated product or product family standard covering emission requirements exists, the
generic standard IEC 61000-6-4 applies.