This part of IEC 61326 specifies requirements for immunity and
emissions regarding electromagnetic compatibility (EMC) for
electrical equipment, operating from a supply or battery of less
than 1 000 V a.c. or 1 500 V d.c. or from the circuit being
measured. Equipment intended for professional, industrial-process,
industrial-manufacturing and educational use is covered by this
part. It includes equipment and computing devices for
– measurement and test;
– laboratory use;
– accessories intended for use with the above (such as sample
intended to be used in industrial and non-industrial
Computing devices and assemblies and similar equipment within
the scope of Information Technology Equipment (ITE) and complying
with applicable ITE EMC standards may be used in systems within the
scope of this part of IEC 61326 without additional testing, if they
are suitable for the intended electromagnetic environment.
It is generally considered that this standard takes precedence
over the corresponding generic EMC standards. The following
equipment is covered by this standard.
a) Electrical measurement and test equipment
This is equipment which, by electrical means, measures,
indicates or records one or more electrical or non-electrical
quantities, also non-measuring equipment such as signal generators,
measurement standards, power supplies and transducers.
b) Electrical control equipment
This is equipment which controls one or more output quantities
to specific values, with each value determined by manual settings,
by local or remote programming, or by one or more input variables.
This includes Industrial Process Measurement and Control (IPMC)
equipment, which consists of devices such as:
– process controllers and regulators;
– programmable controllers;
– power supply units for equipment and systems (centralized or
– analogue/digital indicators and recorders;
– process instrumentation;
– transducers, positioners, intelligent actuators, etc.
c) Electrical laboratory equipment
This is equipment which measures, indicates monitors or analyses
substances, or is used to prepare materials, and includes In Vitro
Diagnostic (IVD) equipment. This equipment may also be used in
areas other than laboratories, for example self-test IVD equipment
may be used in the home.
Equipment within the scope of this standard might be operated in
different electromagnetic environments; depending on the
electromagnetic environment different emission and immunity test
requirements are applicable.
This standard considers three types of electromagnetic
• basic electromagnetic environment;
• industrial electromagnetic environment;
• controlled electromagnetic environment.
Corresponding immunity test requirements are described in Clause
In terms of emission requirements, equipment shall be classified
in Class A or Class B equipment, as per the requirements and
procedure of CISPR 11. The corresponding emission requirements are
described in Clause 7.
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