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This instrument has been designed to meet the requirements of the EMC Directive 2004/108/EC.
Compliance was demonstrated by meeting the test limits of the following standards:
Emissions
EN61326-1 (2013) EMC product standard for Electrical Equipment for Measurement, Control and
Laboratory Use. Test limits used were:
a)
Radiated : Class B
b)
Conducted : Class B
c)
Harmonics: EN61000-3-2 (2006) Class A; the instrument is Class A by product category.
Note that emissions from the AC1000 are within specification when fully loaded with a compliant
load, e.g. a pure resistance. If the load is non-compliant, emissions from the AC1000 will similarly
be non-compliant.
Immunity
EN61326-1 (2013) EMC product standard for Electrical Equipment for Measurement, Control and
Laboratory Use.
Test methods, limits and performance achieved were:
a)
EN61000-4-2 (2009) Electrostatic Discharge : 8kV air, 4kV contact, Performance A.
b)
EN61000-4-3 (2006) Electromagnetic Field, 3V/m, 80% AM at 1kHz, Performance B.
c)
EN61000-4-11 (2004) Voltage Interrupt, ½ or 1 cycle, 0%, Performance B †.
d)
EN61000-4-4 (2004) Fast Transient, 1kV peak (AC line), 0.5kV peak (DC Outputs),
Performance B.
e)
EN61000-4-5 (2006) Surge, 0.5kV (line to line), 1kV (line to ground), Performance A.
f)
EN61000-4-6 (2009) Conducted RF, 3V, 80% AM at 1kHz
AC line only (Output connections <3m therefore not tested), Performance A.
† Note that because this unit passes the mains input to the output after cleaning up only the
distortion products, any interruptions to the input supply will also appear at the output. Extended
interruptions may cause the unit to revert temporarily to DIRECT connection; afterwards, the unit
will automatically recover and resume the previously configured operation.
According to EN61326 the definitions of performance criteria are:
Performance criterion A: 'During test normal performance within the specification limits.'
Performance criterion B: 'During test, temporary degradation, or loss of function or
performance which is self-recovering'.
Performance criterion C: 'During test, temporary degradation, or loss of function or
performance which requires operator intervention or system reset occurs.'
Cautions
To ensure continued compliance with the EMC directive the following precautions
should be observed:
a)
after opening the case for any reason ensure that all signal and ground
connections are remade correctly before replacing the cover. Always ensure all
case screws are correctly refitted and tightened.
b)
In the event of part replacement becoming necessary, only use components of an
identical type, see the Service Manual.
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