DRP-24V120W2BN Datasheet, PDF(11/14 Page) Delta Electronics, Inc.

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TECHNICAL DATASHEET

CliQ II DIN Rail Power Supply

24V 120W 2 Phase / DRP-24V120W2BN

Power Boost

Power Boost is the reserve power available

constantly that allows reliable startup to support

sudden and short spike of loads with high inrush

current typically during turn on to remove the

need of more expensive higher rated power

supply unit. After the output has reached its

steady state set value, the power supply can

support surge loads with a higher short-term

power demand up to 120% of maximum rated

load (IO Max), for a maximum duration of 3

seconds. The Power Boost is also available to

repeatedly basis with according to the condition of

an average (R.M.S) output power shall not

exceed continuous operating condition or refer to

duty cycle calculation below.

í µí°·í µí±¢í µí±¡í µí±¦ í µí±í µí±¦í µí±í µí±í µí± (%) =

í µí±í µí±

í µí±í µí±í µí±¡í µí±í µí± í µí±í µí±í µí±í µí±

í µí°´í µí±£í µí±í µí±í µí±í µí±í µí± í µí±í µí±¢í µí±¡í µí±í µí±¢í µí±¡ í µí±í µí±í µí±¤í µí±í µí± (í µí±í µí°´í µí±£í µí±)

(í µí±í µí±í µí±¤í µí±í µí± í µí°µí µí±í µí±í µí± í µí±¡

Ã í µí±í µí±) + (í µí±í µí±í µí±-í µí±í µí±í µí±í µí± í µí±í µí±í µí±¤í µí±í µí± Ã í µí±í µí±)

í µí±í µí±í µí±¡í µí±í µí± í µí±í µí±í µí±í µí±

í µí±í µí±í µí±-í µí±í µí±í µí±í µí± í µí±í µí±í µí±¤í µí±í µí± =

ï¿½í µí±í µí°´í µí±£í µí±

Ã í µí±í µí±í µí±¡í µí±í µí± í µí±í µí±í µí±í µí±ï¿½ â (í µí±í µí±í µí±¤í µí±í µí± í µí°µí µí±í µí±í µí± í µí±¡

í µí±í µí±

Ã í µí±í µí±)

ï® An example of Power Boost and Average Output Power

Power Boost

120%

Peak Power

(WP)

144

Power Boost

Duration (TP)

3 sec

Duty Cycle

10%

15%

Non-Peak

Power (WN)

114W

117W

Non-Peak Power

Duration (TN)

27 sec

17 sec

Total Time

(T)

30 sec

20 sec

It is not recommended to prolong the duration of Power Boost to be longer than the specified duty cycle calculation, this may cause

damage to the PSU.

External Input Protection Device

The unit is protected at the L pin, with an internal fuse that cannot be replaced. The power supply has been tested and approved on

20A (UL) and 16A (IEC) branch circuits without additional protection device. An external protection device is only required if the

supplying branch has an ampacity greater than above. Thus, if an external protective device is necessary, or, utilized, please refer a

minimum value in instruction sheet with B or C characteristic breaker.

All parameters are specified at 25Â°C ambient and AC x 2 input unless otherwise indicated.

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

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