Seaward B255 - Manual (Page 9)

Operating Manual Clare B255 Power Tool & Appliance Test Station
5
Installation and use of Test Equipment
Electrical safety tests (particularly Flash Tests) are required to comply with
Legislative Documents on electrical and electronic product testing which may
encroach the EMC (Electromagnetic Compatibility) requirements. This
standard came into effect on 1st January 1996.
The design of the test equipment will minimise the effects of electromagnetic
disturbances, but some interference may result from particular applications
dependent on the type of product being tested.
Therefore, the user is responsible for installing and using the test equipment
according to the manufacturers’ instructions. The user of the test equipment
is responsible for detecting electromagnetic disturbances and must resolve
the situation with the technical assistance of the manufacturer. In some cases
it may involve constructing an electromagnetic screen (Faraday cage)
enclosing the test equipment and test pieces complete with associated input
filters. The user should achieve a reduction in electromagnetic disturbances to
a point where they are no longer troublesome.
Assessment of Test Area
Before installing the test equipment the user shall make an assessment of
potential electromagnetic disturbance problems in the surrounding area and
take the following points into account -
• Supply cables (other than those supplying the test equipment), control
cables, signalling and telephone cables. These can be above, below or
adjacent to the test equipment.
• Radio and television transmitters and receivers within a distance of 30
metres;
• Computer and other control equipment within a distance of 10 metres;
• Safety critical equipment (i.e. the guarding of industrial machinery);
• The health of people in the surrounding area. Of approximately 2-3 metres
(that is the use of hearing aids, pacemakers, etc.);
• Delicate electronic equipment used for calibration or measurement.
The size of the surrounding area to be considered will depend on the overall
structure of the building and other activities taking place. It is important to
note that the surrounding area may well extend beyond the boundaries of the
premises.
Position the equipment with adequate ventilation and easy access to all sides
of the equipment for maintenance purposes. Generally this means not
enclosing the equipment (unless specifically designed so) or burying it under
other test equipment.