
INSTALLATION GUIDE FOR RA-7800
RA-7800 QI
Copyright - refer to title page
Page 32
ENU Status : 1-0-1
M8x20 hex bolt
3
2
1
5
4
6
Fig 21: Attaching the RU onto the mounting rack
3.3.10 DRIP-LOOP
Comba recommends that every horizontal cable entry to the equipment forms a 'U' before it’s entry to
the equipment. Any accumulated water on the cable will drip down at the bottom of the loop and will
not climb up to the equipment.
3.4 EQUIPMENT
CONNECTORS
The MU is connected via the connectors located on the front and back panel. The RU is designed for
all cables entries from the bottom of the enclosure. The figures below present the connectors of MU
and RU.
3.4.1 MU CONNECTORS
3.4.1.1 MU Front Panel Connectors
Depending on customer’s requirement on AC or DC power supply; there are three options for PSU
slid-in unit shown as below:
PSU
The front layouts of the AC PSU are shown.
POWER Power
switch
AC110V PSU
PSU
POWER
85~ 135V
45/65Hz
85~135V
45/65Hz
IEC socket for standard power cord. 85~135V
45/65Hz indicates the input power is rated at
AC110V with the voltage range from 85V to 135V.