5 Cleaning
¡
Clean the product with a brush. Prevent liquid from getting into
the product.
Do not soak the product into liquid.
¡
Do not stick solvent to a name plate or a resin case.
(If solvent sticks to a name plate or a resin case, it will cause
to change the color of the case or to fade letters on name plate
away.)
¡
After cleaning, dry them enough.
6 Peak current
¿
TUNS500F
¡
The unit can generate the peak current under the following condi-
tions.
-
t1
[
10[sec]
-
Ip
[
Rated peak current
-
Iave
[
Rated current
-
Duty=t1/ (t1+t2) x 100[%]
[
35%
[A]
Output
current
Ip : Peak current
Iave : Average current
t1
t2
Fig. 6.1 Peak current
¡
When aluminum baseplate temperature Tc is higher than 95
C
,
Iave must be less than 95% of rated current. (TUNS500F28 and
TUNS500F48)
¡
To improve the load sharing of each unit, please use the same
length from each unit to the load.
¡
If temperatures of aluminum base plates are different in the power
supply for parallel operation, values of output current will change
greatly.
Design radiation to equalize plate temperatures by attaching the
same heatsinks.
Load
FG
Co
+
+
R
C1
F1
FG
AC IN
FG
TFR1
CY
C3
C2
+BC
+M
-BC
-M
Cbc
AC1
AC2
+VOUT
-VOUT
Noise
filter
FG
Co
+
+
R
C1
F1
FG
FG
TFR1
CY
C3
C2
+BC
+M
-BC
-M
Cbc
AC1
AC2
+VOUT
-VOUT
Noise
filter
FG
Co
+
+
R
C1
F1
FG
FG
TFR1
CY
C3
C2
+BC
+M
-BC
-M
Cbc
AC1
AC2
+VOUT
-VOUT
Noise
filter
Fig. 4.4 Parallel operation (TUNS700F
OO
-P)
¡
Please refer to the application manuals for details of -P type.
Application manual is on our web site.
4.3 N+1 redundant operation
¿
TUNS1200F/TUNS700F
O
-P
¡
It is possible to set N+1 redundant operation for improving reliabil-
ity of power supply system.
¡
If you add one extra power supply in parallel operation, even if
one of the power supplies in your system fails, the remaining
power supplies continue to function.
¡
Wiring, specifications and precautions are the same as in parallel
operation.
¡
Depending on the failure mode of the power supply, redundant
operation may not be performed.
When performing full redundant operation, customers should build
up redundant functions such as adding diodes to the output of the
power supply.
¡
Please refer to the application manuals for parallel and N+1 re-
dundancy operations. Application manual is on our web site.
TUNS300F, TUNS500F, TUNS700F, TUNS1200F
AC-DC Power Supplies Bus Converter.Power Module Type
Instruction Manual
TUNS-30
July 27, 2020
