SilverStone ST45NF [3/15] Nj450 manual 2

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.

2.3. Input Power Factor Correction ( Active PFC)

The power factor at full load shall be 0.95 at nominal input voltage.

2.4. Input Current Harmonics

When the power supply is operated in 99-264Vac 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 20mS or less shall not cause any tripping of control signals or

protection circuits.If the AC dropout lasts longer than 20mS 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.

2.7. 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.

2.8. 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.

SST-ST45NF