The PJ Open Frame series offers varieties of nominal output voltage with versatile configuration options as follows.
C - Enclosed
L - L Frame
B - Open Frame (Bareboard)
In our product portfolio there are two DIN-Rail Power Supply series CliQ & CliQ II. Both series have this feature.
Efficiency and Reliability are the two most important factors to consider in selecting a PSU.
The best way to ensure the reliability of the PSU is to choose one that provides a maximum of 30% more output than your actual total requirement. For example, if your system has a 90W power requirement, you should choose a PSU with at least 120W power output rating. By doing so, you are boosting the reliability of the PSU as well as prolonging the entire system life.
An efficient PSU will thus ensure that power loss is minimised and will greatly help to lower your operating costs in the long run. By choosing a cheaper, but less efficient PSU will just mean that you are paying for it through your monthly electric bills. Delta's CliQ Din-Rail Power Supply easily give our users a substantial efficiency of up to 87%.Other factors to consider include the operating conditions, types of safety certifications, PSU protection and application functions. Please contact your nearest Delta sales representative for a recommendation based on your requirements.
Yes. Add a Diode across each power supply in reverse bias with a voltage rating at least twice the rated o/p voltage. The current rating of diode must be at least twice the rated current or above.
Answer: The turn ON would be non-monotonic as the power supply with the fastest startup time and rise time will turn on first. As a result, the startup waveform with 2 power supplies connected in series would see a step.
Yes. However, an Oring Diode is necessary to ensure that an increased output rating in parallel operation. Please refer to the manual included with your power supply for more details.
PFC stands for Power Factor Correction. The purpose of PFC is to improve the ratio of apparent power and real power. PFC is needed in the power supplies which have more than 75W input power. For example, a 60W PSU with 80% efficiency and a power input of 75W will need a PFC (based on EMC requirements IEC-61000-3-2). However, if the 60W PSU has more than 80% efficiency, about 82% then the Pin is 73W PFC is not needed.
The power factor is only 0.4~0.6 in non-PFC models. In PFC models, the power factor can reach above 0.95.
The calculation formulas are as below:
Apparent Power=Input Voltage x Input Current (VA)
Real Power= Input Voltage x Input Current x Power Factor (W)
The electric power plant needs to generate a power which is higher than apparent power in order to steadily provide electricity to the market. The real usage of electricity should be defined by real power. Assuming the power factor is 0.5, the power plant needs to produce more than 2VA to satisfy 1W real power. On the contrary, if the power factor is 0.95, the power plant only needs to generate more than 1.053VA to provide 1W real power need. It will be more effective to have PFC keeping environment friendly point of view and energy conservation. CliQ DIN Rail Power Supply's 120W, 240W & 480W single phase power supply have this PFC feature. The 60W model needs the PFC feature if the input power exceeds 75W.
If the power supply is over-loaded beyond the overload protection limit, it will into the protection mode i.e. output voltage will fold back and go into auto recovery (hicc-up mode).
Typically there is no defined time for short circuit intervals but we do not expect the user to short circuit the power supply regularly or at short intervals unless it is due to system error or malfunction. Even so, the power supply unit will still be protected.
The LED is directly connected across the output voltage (LED in series with current limiting resistor). The LED will turn ON as soon as the power supply is switched on.
The LED will turn off under the following conditions:
The LED light will be blinking when it is in the hiccup protection mode.
Copyright © 2015 DeltaPSU. All Rights Reserved.
Copyright © 2015 DeltaPSU.
All Rights Reserved.