6.5 Cleaning
¡
When cleaning is necessary, clean under the following conditions.
Method
: Varnishing, ultrasonic wave and vapor
Cleaning agents : IPA (Solvent type)
Total time
: 2 minutes or less
¡
Do not apply pressure to the lead and name plate with a brush or
scratch it during the cleaning.
¡
After cleaning, dry them enough.
6.6 Storage method (CHS series:option S)
¡
To stock unpacked products in your inventory, it is recommended
to keep them under controlled condition, 5-30
C
, 60%RH and use
them within a year.
¡
24-hour baking is recommended at 125
C
, if unpacked products
were kept under uncontrolled condition, which is 30
C
, 60%RH or
higher.
Original trays are not heat-resistant. Please move them to heat-
resistant trays in preparation to bake.
To check moisture condition in the pack. Silica gel packet has
some moisture condition indicator particles.
Indicated blue means good. Pink means alarm to bake it.
¡
Notification. The tray will be deformed and the power supply might
be damaged, if the vacuum pressure is too much to reseal.
6.7 Stress to the product
¡
CHS series transformer core and choke coil core are attached by
glue.
There is a possibility that the core will be removed and power sup-
ply will be damaged when they receive stress by the fall or some
kind of stress.
7 Safety Considerations
¡
To apply for safety standard approval using this power supply, the
following conditions must be met.
¿
This unit must be used as a component of the end-use equipment.
¿
The equipment must contain basic insulation between input and
output. If double or reinforced insulation is required, it has to be
provided by the end-use equipment in accordance with the final
build-in condition.
¿
Safety approved fuse must be externally installed on input side.
8 Derating
¡
It is necessary to note thermal fatigue life by power cycle.
Please reduce the temperature fluctuation range as much as pos
-
sible when the up and down of temperature are frequently gener-
ated.
8.1 CHS Derating
¡
Use with the convection cooling or the forced air cooling.
Make sure the temperatures at temperature measurement loca-
tions shown from Fig.8.2.1 to Fig.8.2.10 below are on or under the
derating curve in Fig.8.1.
Ambient temperature must be kept at 85
C
or under.
Load factor[%
]
100
80
60
40
Temperature of measurement location[
C
]
-40
20
0
-20
0
20
40
60
120
100
(95)
80
3
1
Option “B”
2
Option “BC”
3
Others
1
2
(a) CHS60, CHS80, CHS200, CHS300, CHS400, CHS500
Load factor[%
]
100
80
60
40
Temperature of measurement location[
C
]
-40
20
0
-20
0
20
40
60
120
100
80
2
1
3
1
Option “B” (Vin:36-60V)
2
Option “B” (Vin:60-76V)
3
Others
(115)
(105)
(b) CHS120
Fig.8.1 Derating curve
Temperature measurement location
Fig.8.2.1 Temperature measurement location (CHS60)
CHS-29
DC-DC Converters Bus Converter.Power Module Type
Instruction Manual