2.2 Input fuse: F11
■
No protective fuse is preinstalled on the input side. To protect the unit, install a slow-blow
type fuse shown in Table 2.2 in the input circuit.
Table 2.2
Recommended
fuse
2.3 Input capacitor: C11
■
Connect a film capacitor of 2 uF or higher as input capacitor C11.
■
Use a capacitor with a rated voltage of AC250V which complies with the safety standards.
■
If C11 is not connected, the power supply or external components could be damaged.
■
When selecting a capacitor, check the maximum allowable ripple current.
■
Ripple current includes low frequency component (input frequency) and high frequency
component (100kHz).
■
Ripple current values flowing into C11 as listed in Table 2.1 are shown in Fig.2.2.
■
The ripple current changes with PCB patterns, external parts, ambient temperature, etc.
Check the actual ripple current value flowing through C11.
Fig.2.2
Ripple current
values
C11
Rated current
10A
15A
15A
A-3
Model
TUNS300F
TUNS500F
TUNS700F
Applications Manual
TUNS300/500/700
