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DOC-MN-007-03 VCCM600 User Manual
Vox Power Limited | Unit 2, Red Cow Interchange Estate, Ballymount, Dublin 22, D22 Y8H2, Ireland | T +353 1 4591161 | www.vox-power.com
Power Ratings
VCCM600 series products must always be operated within stated operating limits. Equipment manufacturers and other users must take the appropriate de-rating
into account when specifying a unit for the intended application. If in doubt, contact your sales representative or Vox Power for assistance.
There are three main de-ratings for the VCCM600 series of configurable power supplies when used in a conduction cooled application,
1.
Ambient air temperature
(1)
Ambient air temperature de-ratings apply to the input module rated and peak
power only.
(3)
The input module must be de-rated by 2.5% per degree Celsius above 50°C, up to
a maximum of 70°C.
2.
Baseplate temperature
(2)
Baseplate temperature de-ratings apply to output module rated power, peak
power and rated current, and bias supply power.
The output module parameters must be de-rated by 2.5% per degree Celsius
above 85°C, up to a maximum of 105°C.
3.
Input line voltage
Input line voltage de-ratings apply to the rated power and peak power for both
the input module and output module.
(3)
All parameters must be de-rated by 2.5% for every 3 volts below 120Vrms, down
to a minimum of 85Vrms.
Notes:
1.
Ambient air temperature is the air temperature immediately surrounding the PSU.
2.
Baseplate temperature is measured at baseplate temperature sensing location TS1.
3.
A normalized value of 1 is equivalent to 100%.
4.
Input line voltage deratings are cumulative with temperature de ratings.
Examples of power ratings calculation for various input voltages, ambient temperatures and baseplate temperatures
1
2
3
4
5
6
7
V
IN
(V
RMS
)
120
85
85
120
120
100
120
Normalised V
IN
Rating [A]
1
0.708
0.708
1
1
0.833
1
T
AMBIENT
(⁰C)
70
50
70
50
60
60
50
Normalised T
A MBIENT
Rating [B]
0.5
1
0.5
1
0.75
0.75
1
T
BA SE
(⁰C)
85
85
85
95
105
95
105
Normalised T
BASE
Rating [C]
1
1
1
0.75
0.5
0.75
0.5
Normalised Total input rating [A*B = D]
0.5
0.708
0.354
1
0.75
0.624
1
Normalised Total output rating [A*C = E]
1
0.708
0.708
0.75
0.5
0.624
0.5
Input module P
RA TED/PEAK
[600W/750W*D]
300/375
424.8/531
212.4/265.5
600/750
450/562.5
374.4/468
600/750
Bias supply power [5W*C]
5
5
5
3.75
2.5
3.75
2.5
OPA P
RA TED/PEAK
[125W/187.5W*E]
125/187.5
88.5/132.75
88.5/132.75
93.75/140.625
62.5/93.75
78/117
62.5/93.75
OPA I
RATED
[25A*C]
25
25
25
18.75
12.5
18.75
12.5
OPB P
RA TED/PEAK
[150W/225W*E]
150/225
106.2/159.3
106.2/159.3
112.5/168.75
75/112.5
93.6/140.4
75/112.5
OPB I
RATED
[15A*C]
15
15
15
11.25
7.5
11.25
7.5
OPC P
RA TED/PEAK
[150W/225W*E]
150/225
106.2/159.3
106.2/159.3
112.5/168.75
75/112.5
93.6/140.4
75/112.5
OPC I
RATED
[7.5A*C]
7.5
7.5
7.5
5.625
3.75
5.625
3.75
OPD P
RATED/PEAK
[150W/217.5W*E]
150/217.5
106.2/154
106.2/154
112.5/163.125
75/108.75
93.6/135.72
75/108.75
OPD I
RATED
[3.75A*C]
3.75
3.75
3.75
2.8125
1.875
2.8125
1.875
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
-40
-30
-20
-10
0
10
20
30
40
50
60
70
N
o
rm
a
li
s
e
d
o
u
tp
u
t
p
o
w
e
r
ra
ti
n
g
Ambient Temperature (Celcius)
Ambient Temperature Derating
Derate at 2.5% per degree celcius
above 50 degree celcius
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
80
100
120
140
160
180
200
220
240
260
280
N
o
rm
a
lis
e
d
O
u
tp
u
t
P
o
w
e
r
ra
ti
n
g
Input Voltage (RMS)
Input Line voltage Derating
Derate at 2.5% per every
3 volts below 120Vrms
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
N
o
rm
a
lis
e
d
P
o
w
e
r
&
C
u
rr
e
n
t
R
a
ti
n
g
Baseplate Temperature (Celcius)
Temperature Derating
Derate at 2.5% per degree celcius
above 85 degree celcius
