
Report No: 094061R-ITCEP07V06
Page: 78 of 123
7. Voltage Fluctuation and Flicker
7.1. Test Specification
According to EMC Standard : EN 61000-3-3
7.2. Test Setup
7.3. Limit
The following limits apply:
- the value of P
st
shall not be greater than 1.0;
- the value of P
lt
shall not be greater than 0.65;
- the value of d(t) during a voltage change shall not exceed 3.3 % for more than 500
ms;
- the relative steady-state voltage change, d
c
, shall not exceed 3.3 %;
- the maximum relative voltage change, d
max
, shall not exceed;
a) 4 % without additional conditions;
b) 6 % for equipment which is:
- switched manually, or
- switched automatically more frequently 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.
NOTE The cycling frequency will be further limited by the P
st
and P
1t
limit.
For example: a d
max
of 6%producing a rectangular voltage change characteristic twice per
hour will give a P
1t
of about 0.65.
Commentaires sur ces manuels