TECHNICAL DATASHEET

Chrome DIN Rail Power Supply

12V 9.96W 1 Phase (Class II & NEC Class 2) / DRC-12V10W1A

□

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

www.DeltaPSU.com (August 2016, Rev. 01)

9

Inrush Current

Inrush current is the peak, instantaneous, input current measured

and, occurs when the input voltage is first applied. For AC input

voltages, the maximum peak value of inrush current will occur

during the first half cycle of the applied AC voltage. This peak

value decreases exponentially during subsequent cycles of AC

voltage.

Dynamic Response

The power supply output voltage will remains within ±5% of its

steady state value, when subjected to a dynamic load from 10 to

100% of its rated current.

Overvoltage Protection

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”.

Overload & Overcurrent Protections

The power supply’s Overload (OLP) and Over current (OCP)

Protections will be activated when output current rapidly exceeds

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 fault condition

specifications.

Over Temperature Protection

As

mentioned

above,

the power

supply

also

has Over

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

condition 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

latch-off mode until the component temperature cools down and

the AC power is recycled.

Short Circuit Protection

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.