Force-GT DIN Rail Power Supply
24 V 960 W 3 Phase / DRF-24V960W3GBA
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input
3x unless otherwise indicated.
www.DeltaPSU.com (May 2022, Rev. 00)
13
Overload & Overcurrent Protections (Auto-Recovery)
The power supply’s Overload (OLP) and Overcurrent (OCP)
Protections will be activated when output current (I
O
) is 110~150%
of maximum rated load (I
O
Max). When this occurs, the output
current will limit to 45 A typ. (refer to
Ⓐ
below) and output voltage
(V
O
) will start to droop. Once V
O
is below approximately 18 Vdc
typ., the power supply will start to operate in “Hiccup mode” as
described in short circuit protection. The power supply will recover
once the fault condition due to OLP or OCP is removed, then I
O
is
back within its specified limits.
Short Circuit Protection (Auto-Recovery)
The power supply’s output Short Circuit Protection function also
provides protection against short circuits. When a short circuit is
applied, the output current will operate in “Hiccup mode”. The
power supply will return to normal operation after the short circuit
is removed.
Overvoltage Protection (Auto-Recovery)
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 4 under “Protections”.
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.
External Input Protection Device
The unit is protected with internal fuse at L1, L2 and L3 pins, with an internal fuse that cannot be replaced. The power supply has been
tested and approved on 20 A (UL) and 16 A (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 10 A B- or 4 A C- characteristic breaker.
