User manual

Compliance Test System 3.0 User Manual

Mode Description

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.

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

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.

86 Revision N California Instruments