AMETEK CTS 3.0 - Manual (Page 87)

User Manual Compliance Test System 3.0
83
Mode Description
after a power supply interruption.
NOTE: The cycling frequency will be further limited by the
Pst and Plt limit. For example: a dmax of 6 % producing a
rectangular voltage change characteristic twice per hour will
give a Plt of about 0,65.
c) 7 % for equipment which is
– attended whilst in use (for example: hair dryers, vacuum
cleaners, kitchen equipment such as mixers, garden
equipment such as lawn mowers, portable tools such as
electric drills), or
– switched on automatically, or is intended to be switched
on manually, no more than twice per day, and also has
either a delayed restart (the delay being not less than a few
tens of seconds) or manual restart, after a power supply
interruption.
In the case of equipment having several separately
controlled circuits in accordance with 6.6, limits b) and c)
shall apply only if there is delayed or manual restart after a
power supply interruption; for all equipment with automatic
switching which is energized immediately on restoration of
supply after a power supply interruption, limits a) shall
apply; for all equipment with manual switching, limits b) or
c) shall apply depending on the rate of switching.
Inrush Current and Dmax Test It may be necessary to determine, by examination of the
circuit diagram and specification of the equipment and by a
short functional test, whether significant voltage fluctuations
are likely to be produced. For voltage changes caused by
manual switching, equipment is deemed to comply without
further testing if the maximum r.m.s. input current (including
inrush current) evaluated over each 10 ms half-period
between zero-crossings does not exceed 20 A, and the
supply current after inrush is within a variation band of 1,5
A.
Select this option to perform this test.
24 x Dmax Test Select this option to determine the Dmax test in accordance
with Annex B of IEC 61000-3-3 Amendment 1. The program
will guide the user through the required steps for taking 24
startup readings. The default current threshold for detecting
an EUT is 500 mA. If the EUT draws less current than 500
mA in the on state, this threshold value may have to be
lowered in the configuration screen.