KBox C-103-CFL-x - User Guide, Rev. 1.0
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12.4.
Power Supply Specification
Before connecting the product to a mains power supply, ensure that the power supply meets the required electrical
specification for the product and that protection and supply limitation have been taken into consideration. The power
supply used must also automatically recover from AC power loss and start up under peak loading.
Connect the product only to a power supply desiged to achive NEC Class-2 and Limited Power Source (LPS).
Table 32: KBox C-103-CFL-x Electrical Specification
Nominal Input Voltage
24 VDC
Input Voltage Range
17 VDC to 36 VDC
Input Current
6.0 A max.
Inrush Current
10 A max. ( at 17 VDC)
Power
140 W (max.)
Observed that wiring and short-circuit/overcurrent protection is performed according to the
applicable standards, regulations and in respect to the product’s electrical specification. The
disconnecting device (fuse/circuit breaker) rating must be in accordance with the product’s
wire cross-section
Only connect to an external power supply delivering the specified input rating and
complying with the requirements of Safety Extra Low Voltage (SELV) and Limited Power
Source (L.P.S.) of UL/IEC 60950-1 or (PS2) of UL/IEC 62368-1.
Ensure that the power supply is used according to the manufacturer’s instructions.
Ensure the power supply has been fully tested to at least meet the minimum immunity of AC
inputs requirements, as stipulated in IEC 55024. Including power supplies marketed with a
separate AC/DC power converter.
12.4.1.
Power Supply Protection Requirements
The used external power supply is required to incorporated protection and supply features such as over current
protection, inrush current protection, over voltage protection and undervoltage (brownout) protection, to protect the
product against fluctuations and interruptions in the delivered DC power supply.
If an under voltage (brownout) condition occurs,the used power supply must remain in the
“off state” long enough to allow internal voltages to discharge sufficiently. Failure to
observe this “off state” may mean that parts of the product or peripherals work incorrectly
or suffer a reduction of MTBF. The minimum “off state”, to allow internal voltages to
discharge sufficiently, is dependent on the power supply and additional electrical factors. To
determine the required “off state”, each case must be considered individually. For more
information, contact Kontron Support.
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