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INSTRUCTION MANUAL
GXE600 Series
TDKLambda
<Page>
73. Output Derating
Refer to the output derating for the standard model below,
■
Convection cooling ( Standard model )
Use so that both of A. and B. shall be satisfied.
A : Derating is necessary to
output current
in case of ambient temperature more than 50°C.
B : Derating is necessary to
output power
in case of input voltage less than 170VAC.
For example, in case of input voltage 100VAC and ambient temperature 60°C and mounting A at 24V model.
According to A. ambient temperature derating,
output current limit
is 75% (18.75A).
①
According to B. input voltage derating,
output power limit
is 500W.
②
⇒
When Vo
≦
26.6V, the derating is determined by
output current
(18.75A)
①
.
Because output power is less than 500W (26.6V x 18.75A).
When Vo > 26.6V, the derating is determined by
output power
(500W)
②
(Caution) The option model with cover (/A) has the different derating vs. ambient temperature from
the standard model. (20 ~ +40°C : Io= 100%, +70°C : Io= 40% for /A option)
Refer to the specification of option model, and be careful
the output current limit
.
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M ounting (A)(B)(D)
M ounting (C)
Ta
(°C)
M ounting (A)(B)(D)
M ounting (C)
20
≦
Ta
≦
+45
100
100
50
100
90
70
50
50
Input Voltage
(VAC)
85
100<
<170
170
≦
83% (500W)
100% (600W)
A : Output Current vs. Ta
Output Current (%)
60% (360W)
83% (500W)
B : Output Power vs. Input Voltage
Output Power
0
20
40
60
80
100
120
20 10 0
10 20 30 40 50 60 70 80
O
ut
p
ut
C
ur
re
nt
(%
)
Ta (
o
C
)
0
20
40
60
80
100
120
85
115
145
175
205
235
265
O
ut
p
ut
P
ow
er
(%
)
Input Voltage (VAC)
83%(500W)
170
100
45