SPS-G025 Series User’s Menu
Please read this user's guide carefully before setup
Input:
1.
Input range:
Universal full range AC 88V ~ 264V (47~ 63Hz) or DC 125V ~ 375V
2. Inrush current: When turn on input power source, there is peak current (inrush
current) running through filter capacitor of power supply. During power supply
operating, it is important not to turn off input power source and then immediately
turn on it again, otherwise, it may shorten power supply’s life.
Inrush current could be several to tens times of the normal current. It is important
to make sure input wiring, fuse and SW are able to carry inrush current.
Output:
1.
The output voltage adjustable range is
±
10% of rated output voltage. As output
power is V
0
x A
0
, when adjusting V
0
to a higher value, should decrease A
0
as well,
ex.:
For SPS-G025-05, the rated output voltage is 5V, max output current is 5A: If
adjusting output voltage to 5.5V, should decrease max output current to 4.55
A
as
well; and even if adjusting output voltage to 4.5V, max output should not be over
5A. (Note:Total output watts can’t over 25W)
2. Output rating :
Protection:
1.
Short circuit protection : The power supply will go into “hiccup mode” against
Short circuit or overload conditions,and auto recovery while fault conditions are
removed.
2.
Over load protection: When over loaded, power supply will “hiccup mode”. After
load reduced to meet rated range, power supply will recover automatically.
To Parallel Switching Power Supplies
Adjusting output voltage of each power supply to a same level, and then serialize
a diode after the positive pole of each power supply. The diode must be able to
carry current that higher than power supply’s max output, and should be
equipped with a proper heat sink. (It is suggested to choose a power supply
which max output could meet your system’s requirement instead of paralleling
lower output power supplies)
Operating temperature range :
-20
℃
~ +70
℃
( Derating factor 50
℃
~ 70
℃
: 2.5% /
℃
)
ex: SPS-G025-05, the rated output voltage is 5V, max output current is 5A.
If working in 60
℃
, max output current is 3.75A.
Storage environment :
10% to 95% RH. (Non condensing)
INPUT
Power Supply (1)
INPUT
Power Supply (2)
D1
D2
To Serialize Switching Power Supplies:
a.
To up rise output voltage:
b.
To generate both positive and negative output voltage:
Wiring:
1. Output wiring must be thick and short enough to carry loading. The shorter and thicker
the wire, the less voltage it drops (less wire loss).
WIRE LOSS
L
N
PE
-V
+V
-V
+V
LOAD
2. Connecting PE of power supply to system’s chassis with a short & thick wire can
reduce noise and prevent electric shock.
Mounting:
1. Each power supply is enclosed with mounting screws. It is suggested to use enclosed
screws to setup power supply, otherwise, make sure its length must not be too long
(refer to the following drawing) to cause short circuit.
2. The input wiring should be separated from output wiring to avoid noise interfere.
3.
When multiple power supplies work together, be sure to keep proper distance
between power supply & power supply as well as power supply and the
environment for good air convection. Use extra cooling fans if needed.
A.
Mounting holes dimension:
To keep the power supply working properly, do not block the vent holes as provide good
heat dissipation with air convection.
