User's Manual

DIB-500 R4.1 Requirements concerning the electrical system
Voltage supply
34 Site Requirements 90DIB500R41SR_FCC02 – 99.1
A UPS serves for ensuring uninterrupted power supply in the case of voltage fluctua-
tions or a temporary failure of the primary power supply. The dimensioning of the UPS
depends on the duration of the time that may have to be bridged as well as on the con-
sumer power the UPS needs to provide security for.
When dimensioning the cross section of the connecting cable between the UPS and the
product, be sure to keep the voltage loss of the connecting cable as low as possible.
Otherwise the UPS may not be able to provide the desired power failure bridging time.
The UPS cannot provide the power failure bridging time, for example, if the discharge
protection threshold of the UPS plus the voltage loss of the connecting cable is smaller
than the lower voltage supply limit value (refer to Table 5.2 on page 32) of the product
with battery supply.
Responsibility of the Operating Company
The use of an uninterruptible voltage supply (UPS) is advisable. The operating com-
pany is responsible for the proper installation and operation of appropriate uninterrupti-
ble power supply systems.
5.2.1.2 Cable specifications of voltage supply cables (V
DC
)
Each equipment rack (apart from the equipment rack(s) of the cavity variant) of the
DIB-500 R4.1 features a connection panel, via which the integrated components are
supplied with voltage and grounded.
For the proper operation of the product, a voltage supply cable according to the connec-
tion type, refer to section 5.2 on page 32, must be available in the operation room.
The rating of the voltage supply cable must be appropriate for the respective power con-
sumption of the network element and comply with further requirements and cable spec-
ifications as applicable, refer to the table below.
Planning recommendations
To take potential network expansions later on into account, the increased power con-
sumption and thus appropriately dimensioned voltage supply cables should be provided
for.