TECHNICAL DATASHEET

PJT Open Frame Power Supply

PJT-100WBA Series / PJT-

All parameters are specified at 25°C ambient unless otherwise indicated.

www.DeltaPSU.com (January 2016, Rev. 02)

9

Overload & Overcurrent Protections (Auto-Recovery)

The power supply’s Overload (OLP) and Overcurrent (OCP)

Protections will be activated when output current exceeds 150%

once the power supply has reached its maximum power limit, the

protection is activated and the power supply will go into “Hiccup

mode” (Auto-Recovery). The power supply will recover once the

within the specifications.

<150% but >100%, since it may cause damage to the PSU.

Short Circuit Protection (Auto-Recovery)

The power supply’s output OLP/OCP function also provides

protection against short circuits. When a short circuit is applied,

the output current will operate in “Hiccup mode”, as shown in the

illustration in the OLP/OCP section on this page. The power

supply will return to normal operation after the short circuit is

removed.

Overvoltage Protection (Latch Mode)

The power supply’s overvoltage circuit will be activated when its

internal feedback circuit fails. The output voltage shall not exceed

its specifications defined on Page 3 under “Protections”. Power

supply will latch off, and require removal/re-application of input

AC voltage in order to restart.

The power supply should be latch.

Over Temperature Protection (Auto-Recovery)

As described in load de-rating section, the power supply also has

Over Temperature Protection (OTP). In the event of a higher

operating temperature at 100% load, the power supply will run

into OTP when the operating temperature is beyond what is

recommended in the de-rating graph. When activated, the output

voltage will go into bouncing mode until the temperature drops to

its normal operating temperature as recommended in the de-

rating graph.

Others

Delta RoHS Compliant

Restriction of the usage of hazardous substances

The European directive 2011/65/EU limits the maximum impurity level of homogeneous materials such as lead,

mercury, cadmium, chrome, polybrominated flame retardants PBB and PBDE for the use in electrical and

electronic equipment. RoHS is the abbreviation for “Restriction of the use of certain hazardous substances in

electrical and electronic equipment”.

This product conforms to this standard.

PFC – Norm EN 61000-3-2

Line Current Harmonic content

Typically, the input current waveform is not sinusoidal due to the periodical peak charging of the input capacitor.

In industrial environment, complying with EN 61000-3-2 is only necessary under special conditions. Complying

to this standard can have some technical drawbacks, such as lower efficiency as well as some commercial

aspects such as higher purchasing costs. Frequently, the user does not profit from fulfilling this standard,

therefore, it is important to know whether it is mandatory to meet this standard for a specific application.