Installation Manual
Installation
（
1
）
Always allow good ventilation clearances, 5mm left and right, 40mm above and 20mm below, around the unit
in use to prevent it from overheating.
（
2
）
The appropriate mounting orientation for the unit is vertical, the input terminals at the bottom and output on
the top. Mounting orientations other than that, such as upside down, horizontal, or table-top mounting, is not
allowed.
（
3
）
Use copper wire only, and recommended wires are shown as below.
AWG 18
16
14
Rated Current of Equipment
(Amp)
7A 10A 15A
Cross-section of Lead(mm
2
)
0.8
1.3
2.1
Note
：
Current each wire carries should be de-rated to 80% of the current suggested
above when using 4-6 wires connected to the unit.
Make sure that all strands of each stranded wire enter the terminal connection and the screw terminals are
securely fixed to prevent poor contact. If the power supply possesses multi-output terminals, please make
sure each contact is connected to wires to prevent too much current stress on a single contact.
（
4
）
Use wires that can withstand temperatures of at least 80°C, such as UL1007.
（
5
）
Recommended wire strapping length is 6mm (0.236”).
（
6
）
Recommended screwdriver is 3mm, slotted type.
（
7
）
The recommended torque setting for terminals is shown as below.
Model I/P
O/P
DDR-15G/L
5 kgf-cm (4.4 Lb-in)
5 kgf-cm (4.4 Lb-in)
DDR-30 G/L
5 kgf-cm (4.4 Lb-in)
5 kgf-cm (4.4 Lb-in)
DDR-60 G/L
5 kgf-cm (4.4 Lb-in)
5 kgf-cm (4.4 Lb-in)
（
8
）
Suggested fuse is shown as below.
Model Fuse Model Fuse
DDR-15G
T3.15A/L250V
DDR-15L
T3.15A/L250V
DDR-30G
T6.3A/L250V
DDR-30L
T3.15A/L250V
DDR-60G
T10A/L250V
DDR-60L
T5A/L250V
