SilverStone ST85EF [3/16] St75zf manual 03

ZEUS ST75ZFZEUS ST75ZF

2.4 Input Current Harmonics

When the power supply is operated in 90-264Vac of Sec. 2.1, the input harmonic current drawn

on the power line shall not exceed the limits set by EN61000-3-2 class "D" standards. The

power supply shall incorporate universal power input with active power factor correction.

2.5 AC Line Dropout

An AC line dropout of 17mS or less shall not cause any tripping of control signals or protection

circuits.If the AC dropout lasts longer than 17mS the power supply should recover and meet all

turn on requirements. The power supply shall meet the regulation requirement over all rated

AC voltages, frequencies, and output loading conditions. Any dropout of the AC line shall not

cause damage to the power supply. An AC line dropout is defined as a drop in AC line to 0VAC

at any phase of the AC line for any length of time.

2.8 Electrical Fast Transient / Burst, IEC61000-4-4

No unsafe operation allowed under any condition . No user noticeable performance degradation

up to 1KV is allowed. Automatic or manual recovery is allowed for other conditions.

2.7 Surge Immunity, IEC61000-4-5

The peak value of the unidirectional surge waveform shall be 2KV for common mode and

1KV for differential mode of transient surge injection. No unsafe operation or no user

noticeable degradation is allowed under any condition. Automatic or manual recovery is

allowed for other conditions.

2.9 Electrical Discharge, IEC61000-4-2

In addition to IEC61000-4-2, the following ESD tests should be conducted. Each surface area

of the unit under test should be subjected to twenty (20) successive static discharges, at each

of the follow voltages: 2KV, 3KV, 4KV, 5KV, 6KV and 8KV.

All power supply outputs shall continue to operate within the parameters of this specification,

without glitches or interruption, while the power is operating as defined and subjected to 2kV

through 10kV ESD pulses. The direct ESD event shall not cause any out of regulation

conditions such as overshoot or undershoot. The power supply shall withstand these shocks

without nuisance trips of the Over-Voltage Protection, Over-Current Protection, or the remote

+5VDC, +12VDC shutdown circuitry.

2.6 AC Surge Voltages

The power supply shall be tested and be compliant with the requirements of IEC61000-4-5

Level 3 criteria for surge withstand capability, with the following conditions and exceptions.

The test equipment and calibrated waveforms shall comply with the requirements of

IEC61000-4-5 for open circuit voltage and short circuit current.

These input transients must not cause any out of regulation conditions, such as overshoot

and undershoot, nor must it cause any nuisance trips of the power supply protection circuits.

The surge-withstand test must not produce damage to the power supply.

The power supply must meet surge-withstand test condition under maximum and minimum

DC output load conditions.