Vega 900 Handbook
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Part Number 17155
NOMINAL INPUT VOLTAGE RANGE
165 - 240VAC
MAX. INPUT VOLTAGE RANGE
150 - 264VAC
INPUT FREQUENCY
47- 63Hz
MAXIMUM INPUT CURRENT
9 A AC
INRUSH CURRENT
<40 AMPS
Adjustment and Derating.
The Vega 900 series is designed to provide a max output power of 900W at nominal output volt-
ages. The following procedure must be used to ensure the PSU is operated within its ratings
a Calculate user power for each module (volts x amps).
b Add all the individual module powers together. The total power must not exceed the value
given.
c
Calculate secondary transformer turns x amps for each module. See the outputs table
for transformer secondary turns.
d Add all the module turns x amps together and this must not exceed the ampere turns.
e If necessary reduce the loading until the conditions are met, ie. power and ampere-turns
maxima.
Input Parameters
Output Parameters
Test requirements include: PSU to be fitted in its end-use equipment and operated under the
most adverse conditions permitted in the end-use equipment handbook/specification and which
will result in the highest temperatures in the PSU. To determine the most adverse conditions
consideration should be given to the end use equipment maximum operating ambient, the PSU
loading and input voltage, ventilation, end use equipment orientation, the position of doors & cov-
ers, etc. Temperatures should be monitored using type K fine wire thermocouples (secured with
cyanoacrylate adhesive, or similar) placed on the hottest part of the component (out of any direct
airflow) and the equipment should be run until all temperatures have stabilised.
Customer Air Cooling (option C):
The following method must be used for determining the safe operation of PSUs when C option
(Customer Air) is fitted, ie fan not fitted to PSU.
For PSUs cooled by customer supplied airflow the components listed in the following table must
not exceed the temperatures given. Additionally ratings specified for units with an internal fan
must still be complied with, eg mains input voltage range, maximum output power, ampere turns,
module voltage / current ratings and maximum ambient temperature. To determine the component
temperatures the heating tests must be conducted in accordance with the requirements of
IEC/EN/CSA60950-1:2001 Clause 4.5. Consideration should also be give to the requirements of
other safety standards.
Note 1:The PSU main transformer has three regions for module secondaries seperated by two
primary windings. Starting nearest slot 1, region A, primary winding, region B, primary winding,
region C. The total ampere turns (AT) in any two adjacent regions is limited to that in the table
above column, “ Max AT in adjacent regions (note 1)”.See mains transformer regions table
below for modules allowed in each region. The table uses module widths with a twin output
module being single width
.
n/a=not applicable
Main transformer regions table:
* Ruggedised fan (Papst 622HH, not for use in PSU’s fitted with IEC inlet).
Modules
Note
Output Range
Current
Slots
Turns
Max. Current
Limit
Settings for hazard-
ous energy
Standard Modules
L1
4.2-5.5V
35A
1
1
43.8A
>5.4V
H1L/1L
1.8-3.8V
12A
1
1
15A
-
1.8-3.8V
8A
1
12A
-
H1L/1H
1.8V-3.8V
12A
1
1
15A
-
3.9-5.5V
8A
1
12A
-
H1H/1L
3.9-5.5V
12A
1
1
15A
-
1.8-3.8V
8A
1
12A
-
H1H/1H
3.9-5.5V
12A
1
1
15A
-
3.9-5.5V
8A
1
12A
-
H1L/2
1.8-3.8V
12A
1
1
15A
-
5.6-9V
6A
2
9A
-
H1H/2
3.9-5.5V
12A
1
1
15A
5.6-9V
6A
2
9A
-
H1L/3
1.8-3.8V
12A
1
1
15A
-
9.1-16.2V
6A
3
9A
-
H1H/3
3.9-5.5V
12A
1
1
15A
-
9.1-16.2V
6A
3
7.5A
-
H1L/4
1.8-3.8V
12A
1
1
15A
-
16.3-25V
4.5A
4
6A
-
H1H/4
3.9-5.5V
12A
1
1
15A
-
16.3-25V
4.5A
4
6A
-
H2/1L
5.6-9V
10A
1
2
15A
-
1.8-3.8V
8A
1
12A
-
H2/1H
5.6-9V
10A
1
2
15A
-
3.9-5.5V
8A
1
12A
-
H2/2
5.6-9V
10A
1
2
15A
-
5.6-9V
6A
2
9A
H2/3
5.6-9V
10A
1
2
15A
-
9.1-16.2
6A
3
7.5A
-
H2/4
5.6-9V
10A
1
2
15A
-
16.3-25V
4.5A
4
6A
-
H3/1L
9.1-16.2V
10A
1
3
15A
>16V
1.8-3.8V
8A
1
12A
-
H3/1H
9.1-16.2V
10A
1
3
15A
>16V
3.9-5.5V
8A
1
12A
-
H3/2
9.1-16.2V
10A
1
3
15A
>16V
5.6-9V
6A
2
9A
-
H3-3
9.1-16.2V
10A
1
3
15A
>16V
9.1-16.2V
6A
3
7.5A
-
H3/4
9.1-16.2V
10A
1
3
15A
>16V
16.3-25V
4.5A
4
6A
-
H5/1L
16.2-28V
5A
1
5
7.5A
>32V
1.8-3.8V
8A
1
12A
-
H5/1H
16.2-28V
5A
1
5
7.5A
>32V
3.9-5.5V
8A
1
12A
-
H5/2
16.2-28V
5A
1
5
7.5A
>32V
5.6-9V
6A
2
9A
-
X1
6,7
0-10V
90A
1
-
-
X2
6,7
0-20V
64.5A
1
-
-
-
X4
6,7
0-40V
32.4A
1
-
---
X8
6,7
0-80V
16.2A
1
-
-
-
Modules Note Output Range
Current
Slots
Turns Max. Current
Limit
Settings for hazard-
ous energy
Standard Modules
B1L
1.8-3.8V
20A
1
1
25A
-
B1H
3.9-5.5V
20A
1
1
25A
B2
5.0-9V
25A
1
2
31.3A
>7.6V
B3
9.1-16.2V
12A
1
3
15A
>16V
B5
21.6-31V
6A
1
5
7.5A
>32V
C1
1.8-4.1V
35A
1
1
43.8A
>5.4V
C1Y
1
1.8-4.1V
40A
1
1
50A
-
C3
9.1-16.2V
18A
1
3
22.5A
>10.6V
C4
16.3-21.5V
14A
1
4
17.5A
>13.7V
C5
21.6-31V
10A
1
5
12.5A
>19.2V
D1L
2
1.8-3.8V
50A
1.5
1
62.5A
>3.8V
D1H
2
3.9-5.5V
50A
1.5
1
62.5A
>3.8V
D2
2
3.8-8V
45A
1.5
2
56.25A
>4.2V
D3
2
8-16.5V
24A
1.5
3
30A
>8V
D4
2
14-21.5V
18A
1.5
4
22.5A
>10.6V
D5
2
21-28V
15A
1.5
5
18.75A
>12.8V
E1
1.8-3.8V
60A
2
1
75A
>3.2V
E2
3
3.8-8V
60A
2
2
75A
>3.2V
E3L
8-13.9V
40A
2
3
50A
>4.8V
E3H
14-15V
36A
2
3
45A
>5.3V
E4
14-19.9V
30A
2
4
37.5A
>6.4V
E5L
20-24V
27A
5
33.8A
>7.1V
E5H
24-28V
25A
2
5
31.3A
>7.6V
Slot 1 Slot 5.5
Region A Region B
Region C
Single
Dual
Dual
Blank
Dual
Dual
Single
Dual, Single
Single
Single
Dual
Single
Single
Dual
-
-
Dual
-
Single
Single, Single, Single Single
Single
Single,Single
Single
Single
Single
-
-
Single
-
1.5
Dual
1.5
Single
Dual
1.5
-
Dual
1.5
Single
1.5,Single
Single
Single
1.5
-
Single
1.5
Single
1.5
1.5,Single
Single
1.5
1.5
1.5
Slot 1 Slot 5.5
Region A Region B
Region C
Single
1.5
1.5
-
1.5
1.5
-
1.5
-
-
Single,Single
Dual
-
1,5, Single
Single
-
Dual, Single
Single
1.5
1.5
-
Single
Single, Single
Dual
1.5
1.5
Dual
Combined Modules
Single
Dual
Dual
-
Dual
Dual
1.5
Dual
1.5
Single
Dual
1.5
-
Dual
1.5
Single
1.5,1.5
Single
Single
1.5,1.5
-
-
1.5,1.5
-
1.5
1.5, Dual
-
1.5
1.5, Single
Single
1.5
1.5
1.5
Cooling
Option
Max
Ambient
Dual Width
Modules Fitted
Max
Power
Max AT
(total)
Max AT adjacent
regions (note 1)
Max Current
Rating
F,D
(Standard or
Ruggedised
Fan Foward
Airflow
50
No
900
220
180
100%
Yes
900
220
180
100%
No
650
220
n/a
100%
Q
(Quiet Fan
Foward
Aairflow
50
No
750
180
n/a
100%
Yes
750
180
140
100%
Modules
CIRCUIT REF.
DESCRIPTION
MAX. TEMP (°C)
-
Power transformer primary, secondary and core
130
T1, TX101, TX201
Module current transformer windings
127
XQ1
E & F Primary option transformers
90
XTR1
EV & FV Primary option transformers
90
TX1
xEW & xFW Primary option transformers
130
L1, L2, XT601
Choke winding
110
T2
Choke winding
117
L4
Choke winding
120
Various
All other choke & transformer windings
110
RLY1
Relay
100
C15
X capacitor
100
Various
All other X capacitors
105
C2, C3, C4
Electrolytic Capacitor
67
Various
All other 10mm dia Electrolytic Capacitor
80
Various
All other 12.5mm dia Electrolytic Capacitor
85
