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 handling equipment),
intended to be used in industrial and non-industrial locations.
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
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 dedicated);
– 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 environments:
• basic electromagnetic environment;
• industrial electromagnetic environment;
• controlled electromagnetic environment.
Corresponding immunity test requirements are described in Clause 6.
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.