Installation guide

100
Characteristics (continued)
Advantys
™
STB Distributed I/O
Solution 0
Phaseo
®
Regulated Power Supplies
The ambient temperature is a determining factor which limits the power that an
electronic power supply can deliver continuously. If the temperature around the
electronic components is too high, their life will be significantly reduced. Conversely,
a power supply can deliver more than its nominal power if the ambient temperature
remains largely below the rated operating temperature.
The rated ambient temperature for Phaseo power supplies is 50°C (122°F). Above
this, derating is necessary up to a temperature of 60°C (140°F).
The adjacent graph shows the power P (in relation to the nominal power Pn) which
the power supply can deliver continuously, according to the ambient temperature
(in a vertical position).
Derating should be considered in extreme operating conditions:
b Intensive operation (output current permanently close to the nominal current,
combined with a high ambient temperature).
b Output voltage set above 24 V (to compensate for line voltage drops, for example).
b Parallel connection to increase the total power.
In all cases, there must be adequate convection round the products to ensure easier
cooling. There must be a clear space of 50 mm (1.96") above and below Phaseo
power supplies and of 15 mm (0.60") at the sides.
(1) UL certified circuit breaker.
Derating
0
0
10 20 30 40 50 60
70
20
40
50
60
80
100
120
140
P/Pn (%)
Maximum operational temperature (°C)
General rules to be complied with
Intensive operation See derating on above graph.
Example for ABL 7RE:
v without derating, from 0°C to 50°C (32°F to 122°F),
v derating of nominal current by 2%, per additional °C, up to 60°C
(140°F).
Rise in output
The nominal power is fixed.
Increasing the output voltage means that the current delivered must
be reduced.
Parallel connection to
increase the power
The total power is equal to the sum of the power of the power
supplies used, but the maximum ambient temperature for operation
is 50°C (122°F).
To improve heat dissipation, the power supplies must not be in
contact with each other.
Load limit Temporary overloads
1,2 x In1,1 x In
I out
U out
19 V
1,2 1,3 1,4 1,5 1,6 1,7 1,8
x In
0
10
12
14
16
18
20
T (ms)
I out:(0...100%)
I out
ABL 7RE and ABL 7RP power supply: protection of the power supply line
Type of mains supply a 115 V single-phase a 230 V single-phase
Type of protection
Thermal-magnetic
circuit-breaker
gG fuse Thermal-magnetic
circuit-breaker
gG fuse
GB2 C60N GB2 C60N
ABL7RE2402 GB2 pB07 MG24517 (1) 2 A GB2 DB06 MG24517 (1) 2 A
ABL7RE2403
GB2 pB07 MG24517 (1) 2 A GB2 DB06 MG24518 (1) 2 A
ABL7RE2405
GB2 pB08 MG24518 (1) 4 A GB2 DB07 MG24518 (1) 2 A
ABL7RE2410
GB2 pB12 MG17454 (1) 6 A GB2 DB08 MG24516 (1) 4 A
ABL7RP2403
GB2 pB07 MG24517 (1) 2 A GB2 DB07 MG17453 (1) 2 A
ABL7RP2405
GB2 pB07 MG24517 (1) 2 A GB2 DB07 MG24516 (1) 2 A
ABL7RP2410
GB2 pB09 MG24519 (1) 4 A GB2 DB07 MG24516 (1) 2 A
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com