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Power supplies and transformers
1
Power supplies for DC control circuits
Regulated switch mode power supplies
Phaseo Modular range
Output characteristics
Behavior in the event of short-circuits and overloads
Phaseo power supplies are equipped with an electronic protection device.
In the event of an overload or short-circuit, the integrated protection interrupts the
current supply before the output voltage drops below 19 V.
The output voltage reverts to its nominal value on elimination of the fault, which
avoids having to take any action.
Derating
The ambient temperature is a determining factor that limits the power an electronic
power supply can deliver continuously. If the temperature around the electronic
components is too high, their life will be significantly reduced.
The nominal ambient temperature for the Modular range of Phaseo power supplies
is 55°C. Above this temperature, derating is necessary up to a maximum
temperature of 70°C (except for the ABL 7RM24025 model).
The graph below shows the power as a percentage of the nominal power that the
power supply can deliver continuously, depending on the ambient temperature.
1
With an
ABL 7RM24025
2
With an
ABL 8MEM
ppppp
Temporary overloads
The
ABL 8MEM
pppp
Modular range of power supplies have an energy reserve that
can be used to supply the application with 125 % to 140 % of the nominal output
current for a maximum of 1 minute, depending on the model.
Series or parallel connection
Series connection
Parallel connection
(1) Two Shottky diodes Imin = power supply In and Vmin = 50 V
Family
Series
Parallel
ABL 7RM/8MEM
2 products max.
2 products max.
Note:
Series or parallel connection is only recommended for products with identical references.
100
- 25
- 5
15
35
55
75 70
30
1
2
75
50
25
0
P/Pn (%)
Maximum operating temperature (°C)
Description:
page 66
References:
page 71
Dimensions:
page 71
Schemes:
page 71
+
+
ABL 8MEM
ABL 7RM
(1)
(1)
ABL 8MEM
ABL 7RM
2 x U
OUT
/ I
OUT
+
+
ABL 8MEM
ABL 7RM
ABL 8MEM
ABL 7RM
U
OUT
/ 2 x I
OUT
Output characteristics
1
1
2
3
4
5
6
7
8
9
10